{"id":117883,"date":"2026-10-25T20:00:33","date_gmt":"2026-10-25T12:00:33","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/117883.html"},"modified":"2026-10-25T20:00:33","modified_gmt":"2026-10-25T12:00:33","slug":"%e6%b3%a8%e9%87%8a%e4%b8%8e%e7%bc%96%e7%a0%81%e8%a7%84%e8%8c%83%ef%bc%9a%e5%a5%bd%e7%9a%84%e4%bb%a3%e7%a0%81%e4%bb%8e%e8%a7%84%e8%8c%83%e6%b3%a8%e9%87%8a%e5%bc%80%e5%a7%8b","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/117883.html","title":{"rendered":"\u6ce8\u91ca\u4e0e\u7f16\u7801\u89c4\u8303\uff1a\u597d\u7684\u4ee3\u7801\u4ece\u89c4\u8303\u6ce8\u91ca\u5f00\u59cb"},"content":{"rendered":"

\u4e00\u3001\u4e3a\u4ec0\u4e48\u6ce8\u91ca\u4e0e\u7f16\u7801\u89c4\u8303\u5982\u6b64\u91cd\u8981<\/h3>\n

\u5728\u8f6f\u4ef6\u5de5\u7a0b\u7684\u5b8c\u6574\u751f\u547d\u5468\u671f\u4e2d，\u4ee3\u7801\u88ab\u9605\u8bfb\u7684\u6b21\u6570\u8fdc\u8fdc\u8d85\u8fc7\u88ab\u7f16\u5199\u7684\u6b21\u6570\u3002Martin Fowler \u66fe\u8bf4\u8fc7\u4e00\u53e5\u5e7f\u4e3a\u6d41\u4f20\u7684\u8bdd："\u4efb\u4f55\u50bb\u74dc\u90fd\u80fd\u5199\u51fa\u8ba1\u7b97\u673a\u53ef\u4ee5\u7406\u89e3\u7684\u4ee3\u7801，\u4f46\u4f18\u79c0\u7684\u7a0b\u5e8f\u5458\u5199\u7684\u662f\u4eba\u7c7b\u53ef\u4ee5\u7406\u89e3\u7684\u4ee3\u7801\u3002"\u8fd9\u53e5\u8bdd\u7cbe\u51c6\u5730\u6982\u62ec\u4e86\u7f16\u7801\u89c4\u8303\u4e0e\u6ce8\u91ca\u7684\u7ec8\u6781\u610f\u4e49\u2014\u2014\u4ee3\u7801\u9996\u5148\u662f\u5199\u7ed9\u4eba\u770b\u7684，\u5176\u6b21\u624d\u662f\u5199\u7ed9\u673a\u5668\u6267\u884c\u7684\u3002<\/p>\n

1.1 \u53ef\u8bfb\u6027：\u4ee3\u7801\u7684\u9690\u6027\u6210\u672c<\/h4>\n

\u8bbe\u60f3\u8fd9\u6837\u4e00\u4e2a\u573a\u666f：\u4f60\u63a5\u624b\u4e86\u4e00\u4e2a\u79bb\u804c\u540c\u4e8b\u7559\u4e0b\u7684\u9879\u76ee，\u6253\u5f00\u4e00\u4e2a\u540d\u4e3a UserServiceImpl.java \u7684\u6587\u4ef6，\u6620\u5165\u773c\u5e18\u7684\u662f\u6570\u767e\u884c\u6ca1\u6709\u6ce8\u91ca\u3001\u53d8\u91cf\u540d\u968f\u610f\u3001\u7f29\u8fdb\u6df7\u4e71\u7684\u4ee3\u7801\u3002\u4f60\u9700\u8981\u82b1\u8d39\u591a\u5c11\u65f6\u95f4\u6765\u7406\u89e3\u5b83？<\/p>\n

\u7814\u7a76\u6570\u636e\u8868\u660e，\u5f00\u53d1\u8005\u5e73\u5747\u6bcf\u6708\u5927\u7ea6\u9700\u8981\u82b1\u8d39 58% \u7684\u5de5\u4f5c\u65f6\u95f4 \u5728\u7406\u89e3\u65e2\u6709\u4ee3\u7801\u4e0a\u3002\u4e00\u4efd\u7f16\u7801\u89c4\u8303\u7684\u7f3a\u5931，\u4f1a\u4f7f\u5f97\u8fd9\u4efd\u9690\u6027\u6210\u672c\u6210\u500d\u589e\u957f\u3002\u53cd\u8fc7\u6765\u8bf4，\u826f\u597d\u7684\u6ce8\u91ca\u548c\u4e00\u81f4\u7684\u4ee3\u7801\u98ce\u683c，\u5c31\u50cf\u662f\u4e00\u672c\u7cbe\u5fc3\u7f16\u6392\u7684\u4e66\u7c4d\u2014\u2014\u76ee\u5f55\u6e05\u6670\u3001\u6bb5\u843d\u5206\u660e\u3001\u672f\u8bed\u7edf\u4e00，\u8bfb\u8005\u53ef\u4ee5\u8fc5\u901f\u5b9a\u4f4d\u5230\u5173\u952e\u4fe1\u606f\u3002<\/p>\n

\u4e0b\u8868\u76f4\u89c2\u5730\u5bf9\u6bd4\u4e86\u4e0d\u540c\u4ee3\u7801\u8d28\u91cf\u4e0b\u7684\u9605\u8bfb\u6548\u7387\u5dee\u5f02：<\/p>\n\n\u4ee3\u7801\u7279\u5f81\u65e0\u89c4\u8303\u4ee3\u7801\u6709\u89c4\u8303\u4ee3\u7801\u6548\u7387\u63d0\u5347<\/tr>\n\n\n\n\n\n\n
\u9996\u6b21\u7406\u89e3\u8017\u65f6<\/td>\n30-60 \u5206\u949f<\/td>\n5-15 \u5206\u949f<\/td>\n\u7ea6 4 \u500d<\/td>\n<\/tr>\n
\u53d8\u91cf\u540d\u7406\u89e3\u51c6\u786e\u7387<\/td>\n60% \u5de6\u53f3<\/td>\n95% \u4ee5\u4e0a<\/td>\n\u7ea6 1.5 \u500d<\/td>\n<\/tr>\n
\u65b9\u6cd5\u804c\u8d23\u8bc6\u522b<\/td>\n\u9700\u8981\u9010\u884c\u9605\u8bfb<\/td>\n\u770b\u65b9\u6cd5\u540d+\u6ce8\u91ca\u5373\u53ef<\/td>\n\u7ea6 10 \u500d<\/td>\n<\/tr>\n
Bug \u5b9a\u4f4d\u901f\u5ea6<\/td>\n\u4f9d\u8d56\u8c03\u8bd5\u5de5\u5177<\/td>\n\u7ed3\u5408\u6ce8\u91ca\u5feb\u901f\u9501\u5b9a<\/td>\n\u7ea6 3 \u500d<\/td>\n<\/tr>\n
\u65b0\u4eba\u4e0a\u624b\u9879\u76ee\u5468\u671f<\/td>\n2-4 \u5468<\/td>\n3-5 \u5929<\/td>\n\u7ea6 5 \u500d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

1.2 \u53ef\u7ef4\u62a4\u6027：\u8ba9\u4ee3\u7801\u7ecf\u5f97\u8d77\u65f6\u95f4\u8003\u9a8c<\/h4>\n

\u4ee3\u7801\u4e0d\u662f\u4e00\u6b21\u6027\u7684\u827a\u672f\u54c1，\u800c\u662f\u9700\u8981\u6301\u7eed\u6f14\u8fdb\u7684\u6d3b\u4f53\u3002\u4e00\u4e2a\u65b9\u6cd5\u4eca\u5929\u5904\u7406\u4e09\u79cd\u60c5\u51b5，\u4e09\u4e2a\u6708\u540e\u53ef\u80fd\u8981\u5904\u7406\u516b\u79cd\u3002\u5728\u6ca1\u6709\u6ce8\u91ca\u7684\u60c5\u51b5\u4e0b，\u540e\u6765\u8005\u5f88\u96be\u5224\u65ad：\u8fd9\u6bb5\u4ee3\u7801\u539f\u6709\u7684\u8fb9\u754c\u6761\u4ef6\u662f\u4ec0\u4e48？\u54ea\u4e2a\u5206\u652f\u662f\u540e\u6765\u8ffd\u52a0\u7684\u8865\u4e01？\u4fee\u6539\u8fd9\u91cc\u4f1a\u4e0d\u4f1a\u5f15\u53d1\u8fde\u9501\u53cd\u5e94？<\/p>\n

\u6ce8\u91ca\u5145\u5f53\u4e86"\u8bbe\u8ba1\u610f\u56fe\u7684\u8bb0\u5f55\u8005"\u89d2\u8272\u3002\u5b83\u544a\u8bc9\u540e\u6765\u8005：\u8fd9\u6bb5\u4ee3\u7801\u4e3a\u4ec0\u4e48\u8fd9\u6837\u5199，\u800c\u4e0d\u4ec5\u4ec5\u662f\u8fd9\u6bb5\u4ee3\u7801\u505a\u4e86\u4ec0\u4e48\u3002\u540e\u8005\u53ef\u4ee5\u901a\u8fc7\u9605\u8bfb\u4ee3\u7801\u672c\u8eab\u83b7\u77e5，\u524d\u8005\u5374\u5f80\u5f80\u53ea\u6709\u5f53\u521d\u7684\u8bbe\u8ba1\u8005\u5fc3\u77e5\u809a\u660e\u3002<\/p>\n

\/\/ \u7cdf\u7cd5\u7684\u4ee3\u7801\u2014\u2014\u6ca1\u6709\u89e3\u91ca\u4e3a\u4ec0\u4e48<\/span>
\npublic<\/span> double<\/span> calculatePrice<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span>
\n if<\/span> (<\/span>order.<\/span>getCreateTime<\/span>(<\/span>)<\/span>.<\/span>getHour<\/span>(<\/span>)<\/span> <<\/span> 6<\/span>)<\/span> {<\/span>
\n return<\/span> order.<\/span>getTotalAmount<\/span>(<\/span>)<\/span> *<\/span> 0.8<\/span>;<\/span>
\n }<\/span>
\n return<\/span> order.<\/span>getTotalAmount<\/span>(<\/span>)<\/span>;<\/span>
\n}<\/span><\/p>\n

\/\/ \u826f\u597d\u6ce8\u91ca\u7684\u4ee3\u7801\u2014\u2014\u89e3\u91ca\u4e86\u4e3a\u4ec0\u4e48<\/span>
\n\/**
\n * \u8ba1\u7b97\u8ba2\u5355\u6700\u7ec8\u4ef7\u683c\u3002
\n *
\n * \u51cc\u6668 0:00-6:00 \u662f\u7cfb\u7edf\u7ef4\u62a4\u7a97\u53e3\u671f\u7684\u4fc3\u9500\u65f6\u6bb5，
\n * \u6b64\u65f6\u95f4\u6bb5\u5185\u7684\u8ba2\u5355\u4eab\u53d7 8 \u6298\u4f18\u60e0\u3002
\n * \u8be5\u89c4\u5219\u4e8e 2025 \u5e74 Q1 \u8fd0\u8425\u6d3b\u52a8\u540e\u56fa\u5b9a\u4e3a\u957f\u671f\u7b56\u7565\u3002
\n *\/<\/span>
\npublic<\/span> double<\/span> calculatePrice<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span>
\n if<\/span> (<\/span>order.<\/span>getCreateTime<\/span>(<\/span>)<\/span>.<\/span>getHour<\/span>(<\/span>)<\/span> <<\/span> 6<\/span>)<\/span> {<\/span>
\n return<\/span> order.<\/span>getTotalAmount<\/span>(<\/span>)<\/span> *<\/span> 0.8<\/span>;<\/span>
\n }<\/span>
\n return<\/span> order.<\/span>getTotalAmount<\/span>(<\/span>)<\/span>;<\/span>
\n}<\/span><\/p>\n

1.3 \u56e2\u961f\u534f\u4f5c：\u7edf\u4e00\u8bed\u8a00\u7684\u529b\u91cf<\/h4>\n

\u5728\u4e00\u4e2a\u8d85\u8fc7\u4e09\u4eba\u53c2\u4e0e\u7684 Java \u9879\u76ee\u4e2d，\u5982\u679c\u6ca1\u6709\u7edf\u4e00\u7684\u7f16\u7801\u89c4\u8303，\u6bcf\u4e2a\u6210\u5458\u90fd\u53ef\u80fd\u6309\u7167\u81ea\u5df1\u7684\u4e60\u60ef\u6765\u7f16\u5199\u4ee3\u7801\u3002\u6709\u4eba\u559c\u6b22\u5c06\u5de6\u5927\u62ec\u53f7\u653e\u5728\u884c\u5c3e，\u6709\u4eba\u4e60\u60ef\u53e6\u8d77\u4e00\u884c；\u6709\u4eba\u4f7f\u7528 Tab \u7f29\u8fdb，\u6709\u4eba\u4f7f\u7528 4 \u4e2a\u7a7a\u683c；\u6709\u4eba\u5c06\u5e38\u91cf\u547d\u540d\u4e3a MAX_COUNT，\u6709\u4eba\u5199\u6210 maxCount \u751a\u81f3 m_maxCount\u3002<\/p>\n

\u8fd9\u4e9b\u770b\u4f3c\u5fae\u5c0f\u7684\u5dee\u5f02，\u5728\u4ee3\u7801\u8bc4\u5ba1（Code Review）\u73af\u8282\u4f1a\u88ab\u65e0\u9650\u653e\u5927\u2014\u2014\u8bc4\u5ba1\u8005\u7684\u6ce8\u610f\u529b\u88ab\u683c\u5f0f\u5dee\u5f02\u5206\u6563，\u800c\u975e\u805a\u7126\u4e8e\u903b\u8f91\u6b63\u786e\u6027\u3002\u800c\u4e00\u4efd\u56e2\u961f\u5171\u540c\u9075\u5b88\u7684\u7f16\u7801\u89c4\u8303，\u5c31\u50cf\u4ea4\u901a\u89c4\u5219\u4e00\u6837，\u8ba9\u6240\u6709\u8f66\u8f86\u5728\u6709\u79e9\u5e8f\u7684\u73af\u5883\u4e2d\u9ad8\u6548\u884c\u9a76\u3002\u963f\u91cc\u5df4\u5df4\u5728 2017 \u5e74\u5f00\u6e90\u300aJava \u5f00\u53d1\u624b\u518c\u300b\u65f6\u5c31\u660e\u786e\u4e86\u4e00\u6761\u6838\u5fc3\u7406\u5ff5：\u4ee3\u7801\u89c4\u8303\u7684\u7edf\u4e00\u4e0d\u662f\u4e3a\u4e86\u9650\u5236\u521b\u9020\u529b，\u800c\u662f\u4e3a\u4e86\u91ca\u653e\u521b\u9020\u529b\u2014\u2014\u628a\u7cbe\u529b\u4ece\u683c\u5f0f\u4e89\u8bba\u4e2d\u89e3\u653e\u51fa\u6765，\u6295\u5165\u5230\u771f\u6b63\u6709\u4ef7\u503c\u7684\u67b6\u6784\u4e0e\u4e1a\u52a1\u8bbe\u8ba1\u4e2d\u3002<\/p>\n

\n

\u4e8c\u3001Java \u6ce8\u91ca\u7684\u4e09\u79cd\u5f62\u5f0f<\/h3>\n

Java \u8bed\u8a00\u4ece\u8bde\u751f\u4e4b\u521d\u5c31\u63d0\u4f9b\u4e86\u4e09\u79cd\u6ce8\u91ca\u5f62\u5f0f：\u5355\u884c\u6ce8\u91ca\u3001\u591a\u884c\u6ce8\u91ca\u548c\u6587\u6863\u6ce8\u91ca\u3002\u6bcf\u4e00\u79cd\u90fd\u6709\u5176\u7279\u5b9a\u7684\u4f7f\u7528\u573a\u666f\u548c\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n

2.1 \u5355\u884c\u6ce8\u91ca（\/\/）<\/h4>\n

\u5355\u884c\u6ce8\u91ca\u4ee5 \/\/ \u5f00\u5934，\u4ece \/\/ \u5f00\u59cb\u5230\u884c\u5c3e\u7684\u6240\u6709\u5185\u5bb9\u90fd\u88ab\u7f16\u8bd1\u5668\u5ffd\u7565\u3002\u8fd9\u662f\u6700\u8f7b\u91cf\u7ea7\u7684\u6ce8\u91ca\u5f62\u5f0f，\u9002\u7528\u4e8e\u5bf9\u5355\u884c\u4ee3\u7801\u6216\u77ed\u903b\u8f91\u5757\u8fdb\u884c\u7b80\u8981\u8bf4\u660e\u3002<\/p>\n

\u9002\u7528\u573a\u666f：<\/p>\n

    \n
  • \u89e3\u91ca\u67d0\u4e00\u884c\u4ee3\u7801\u7684\u7279\u6b8a\u5904\u7406\u539f\u56e0<\/li>\n
  • \u6807\u6ce8\u4e34\u65f6\u7684 TODO\u3001FIXME \u6807\u8bb0<\/li>\n
  • \u5bf9\u4ee3\u7801\u5757\u8fdb\u884c\u5206\u6bb5\u8bf4\u660e<\/li>\n
  • \u8c03\u8bd5\u65f6\u4e34\u65f6\u6ce8\u91ca\u6389\u4e00\u884c\u4ee3\u7801<\/li>\n<\/ul>\n

    public<\/span> class<\/span> OrderValidator<\/span> {<\/span><\/p>\n

    public<\/span> boolean<\/span> validate<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span>
    \n \/\/ \u8ba2\u5355\u91d1\u989d\u4e0d\u80fd\u4e3a\u8d1f\u6570（\u9632\u6b62\u524d\u7aef\u7ed5\u8fc7\u6821\u9a8c\u63d0\u4ea4\u975e\u6cd5\u6570\u636e）<\/span>
    \n if<\/span> (<\/span>order.<\/span>getAmount<\/span>(<\/span>)<\/span>.<\/span>compareTo<\/span>(<\/span>BigDecimal<\/span>.<\/span>ZERO<\/span>)<\/span> <=<\/span> 0<\/span>)<\/span> {<\/span>
    \n return<\/span> false<\/span>;<\/span>
    \n }<\/span><\/p>\n

    \/\/ TODO: \u540e\u7eed\u7248\u672c\u9700\u8981\u589e\u52a0\u5bf9\u865a\u62df\u5546\u54c1\u7684\u7279\u6b8a\u6821\u9a8c\u903b\u8f91<\/span>
    \n \/\/ FIXME: \u5f53\u524d\u624b\u673a\u53f7\u6b63\u5219\u672a\u8986\u76d6\u6d77\u5916\u53f7\u7801，\u9700\u5728 v2.3.0 \u4fee\u590d<\/span>
    \n if<\/span> (<\/span>!<\/span>order.<\/span>getPhone<\/span>(<\/span>)<\/span>.<\/span>matches<\/span>(<\/span>"^1[3-9]\\\\\\\\d{9}$"<\/span>)<\/span>)<\/span> {<\/span>
    \n return<\/span> false<\/span>;<\/span>
    \n }<\/span><\/p>\n

    \/\/ \u6821\u9a8c\u901a\u8fc7<\/span>
    \n return<\/span> true<\/span>;<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    \u5355\u884c\u6ce8\u91ca\u7684\u6ce8\u610f\u4e8b\u9879：<\/p>\n

      \n
    • \u6ce8\u91ca\u5e94\u8be5\u5199\u5728\u88ab\u89e3\u91ca\u4ee3\u7801\u7684\u4e0a\u65b9\u6216\u540c\u884c\u53f3\u4fa7，\u800c\u975e\u4e0b\u65b9<\/li>\n
    • \/\/ \u540e\u9762\u5e94\u4fdd\u7559\u4e00\u4e2a\u7a7a\u683c，\u589e\u5f3a\u53ef\u8bfb\u6027<\/li>\n
    • \u4e0d\u8981\u7528\u5355\u884c\u6ce8\u91ca\u6765\u6ce8\u91ca\u6389\u5927\u6bb5\u4ee3\u7801\u2014\u2014\u8fd9\u4f1a\u5728\u4ee3\u7801\u5ba1\u67e5\u4e2d\u9020\u6210\u56f0\u60d1，\u5e94\u76f4\u63a5\u5220\u9664\u65e0\u7528\u4ee3\u7801（\u7248\u672c\u63a7\u5236\u7cfb\u7edf\u4f1a\u4fdd\u7559\u5386\u53f2）<\/li>\n<\/ul>\n

      2.2 \u591a\u884c\u6ce8\u91ca（\/* *\/）<\/h4>\n

      \u591a\u884c\u6ce8\u91ca\u4ee5 \/* \u5f00\u5934，\u4ee5 *\/ \u7ed3\u5c3e，\u4e2d\u95f4\u7684\u6240\u6709\u5185\u5bb9\u90fd\u88ab\u7f16\u8bd1\u5668\u5ffd\u7565\u3002\u5b83\u53ef\u4ee5\u8de8\u8d8a\u591a\u884c，\u9002\u5408\u6ce8\u91ca\u8f83\u957f\u7684\u8bf4\u660e\u6587\u5b57，\u6216\u8005\u5728\u8c03\u8bd5\u65f6\u4e34\u65f6\u5c4f\u853d\u4e00\u6bb5\u4ee3\u7801\u3002<\/p>\n

      \u9002\u7528\u573a\u666f：<\/p>\n

        \n
      • \u7c7b\u6216\u65b9\u6cd5\u7684\u6982\u8981\u6027\u8bf4\u660e（\u5f53\u4e0d\u9700\u8981\u751f\u6210 Javadoc \u65f6）<\/li>\n
      • \u7248\u6743\u58f0\u660e\u3001\u8bb8\u53ef\u4fe1\u606f<\/li>\n
      • \u5bf9\u590d\u6742\u7b97\u6cd5\u7684\u5206\u6bb5\u89e3\u91ca<\/li>\n
      • \u4e34\u65f6\u5c4f\u853d\u4e00\u6bb5\u4ee3\u7801（\u8c28\u614e\u4f7f\u7528）<\/li>\n<\/ul>\n

        \/*
        \n * ========================================================
        \n * \u8ba2\u5355\u7ed3\u7b97\u6a21\u5757
        \n *
        \n * \u672c\u6a21\u5757\u8d1f\u8d23\u5904\u7406\u8ba2\u5355\u7684\u91d1\u989d\u8ba1\u7b97\u3001\u4f18\u60e0\u53e0\u52a0\u3001\u7a0e\u8d39\u6838\u7b97\u3002
        \n *
        \n * \u91d1\u989d\u8ba1\u7b97\u9075\u5faa\u4ee5\u4e0b\u4f18\u5148\u7ea7：
        \n * 1. \u4f1a\u5458\u6298\u6263（\u57fa\u4e8e\u7528\u6237\u7b49\u7ea7）
        \n * 2. \u6ee1\u51cf\u4f18\u60e0（\u5e73\u53f0\u6d3b\u52a8）
        \n * 3. \u4f18\u60e0\u5238\u62b5\u6263（\u7528\u6237\u6301\u6709）
        \n * 4. \u7a0e\u8d39\u8ba1\u7b97（\u57fa\u4e8e\u6536\u8d27\u5730\u5740）
        \n *
        \n * \u6ce8\u610f：\u4ee5\u4e0a\u56db\u9879\u6309\u7167\u987a\u5e8f\u4f9d\u6b21\u8ba1\u7b97，\u4e0d\u53ef\u5e76\u884c\u3002
        \n * ========================================================
        \n *\/<\/span><\/p>\n

        public<\/span> class<\/span> OrderSettlementService<\/span> {<\/span>
        \n \/\/ …<\/span>
        \n}<\/span><\/p>\n

        \u591a\u884c\u6ce8\u91ca\u7684\u6ce8\u610f\u4e8b\u9879：<\/p>\n

          \n
        • \u591a\u884c\u6ce8\u91ca\u4e0d\u80fd\u5d4c\u5957\u4f7f\u7528\u2014\u2014\u5982\u679c\u4f60\u5728 \/* … *\/ \u5185\u90e8\u518d\u5199\u4e00\u4e2a \/* *\/，\u7f16\u8bd1\u5668\u4f1a\u62a5\u9519\u3002\u8fd9\u662f\u56e0\u4e3a\u7f16\u8bd1\u5668\u9047\u5230\u7b2c\u4e00\u4e2a *\/ \u5c31\u8ba4\u4e3a\u6ce8\u91ca\u7ed3\u675f\u4e86<\/li>\n
        • \u5728\u6b63\u5f0f\u4ee3\u7801\u4e2d，\u5e94\u4f18\u5148\u4f7f\u7528 Javadoc \u6ce8\u91ca（\/** *\/）\u800c\u975e\u666e\u901a\u591a\u884c\u6ce8\u91ca\u6765\u63cf\u8ff0\u7c7b\u548c\u65b9\u6cd5，\u56e0\u4e3a\u524d\u8005\u53ef\u4ee5\u751f\u6210 API \u6587\u6863<\/li>\n
        • \u5f53\u4f7f\u7528 \/* *\/ \u6ce8\u91ca\u6389\u4e00\u6bb5\u4ee3\u7801\u65f6，\u5982\u679c\u4ee3\u7801\u5185\u90e8\u5df2\u7ecf\u5305\u542b \/* *\/ \u6ce8\u91ca，\u4f1a\u5bfc\u81f4\u8bed\u6cd5\u9519\u8bef<\/li>\n<\/ul>\n

          \/\/ \u5371\u9669\u7684\u591a\u884c\u6ce8\u91ca\u5d4c\u5957\u793a\u4f8b\u2014\u2014\u8fd9\u6bb5\u4ee3\u7801\u65e0\u6cd5\u901a\u8fc7\u7f16\u8bd1<\/span>
          \n\/*
          \n * \u5916\u90e8\u6ce8\u91ca\u5f00\u59cb
          \n * \/* \u5185\u90e8\u6ce8\u91ca\u2014\u2014\u8fd9\u91cc\u4f1a\u5f15\u53d1\u7f16\u8bd1\u9519\u8bef！ *\/<\/span>
          \n *<\/span> \u5916\u90e8\u6ce8\u91ca\u7ed3\u675f
          \n *<\/span>\/<\/span><\/p>\n

          \/\/ \u6b63\u786e\u7684\u505a\u6cd5\u662f\u4f7f\u7528\u5355\u884c\u6ce8\u91ca\u6765\u5c4f\u853d\u4ee3\u7801<\/span>
          \n\/\/ public void deprecatedMethod() {<\/span>
          \n\/\/ \/* \u539f\u6709\u7684\u5185\u90e8\u6ce8\u91ca *\/<\/span>
          \n\/\/ System.out.println("\u8fd9\u4e2a\u65b9\u6cd5\u6682\u65f6\u4e0d\u7528\u4e86");<\/span>
          \n\/\/ }<\/span><\/p>\n

          2.3 \u6587\u6863\u6ce8\u91ca（\/** *\/ Javadoc \u8bed\u6cd5）<\/h4>\n

          \u6587\u6863\u6ce8\u91ca\u662f Java \u4e2d\u6700\u5177\u7279\u8272\u7684\u6ce8\u91ca\u5f62\u5f0f，\u4e5f\u662f Java \u8bed\u8a00\u8bbe\u8ba1\u7684\u6838\u5fc3\u54f2\u5b66\u4f53\u73b0\u2014\u2014\u4ee3\u7801\u5373\u6587\u6863\u3002\u5b83\u4ee5 \/** \u5f00\u5934，\u4ee5 *\/ \u7ed3\u5c3e，\u53ef\u4ee5\u88ab javadoc \u5de5\u5177\u63d0\u53d6\u5e76\u751f\u6210\u6807\u51c6\u5316\u7684 HTML API \u6587\u6863\u3002<\/p>\n

          \u6587\u6863\u6ce8\u91ca\u652f\u6301\u4e30\u5bcc\u7684\u6807\u7b7e（Tag），\u6bcf\u4e00\u79cd\u6807\u7b7e\u90fd\u6709\u660e\u786e\u7684\u8bed\u4e49，\u5171\u540c\u6784\u6210\u4e86\u4e00\u5957\u7ed3\u6784\u5316\u7684 API \u63cf\u8ff0\u8bed\u8a00\u3002<\/p>\n

          2.3.1 \u6838\u5fc3 Javadoc \u6807\u7b7e\u8be6\u89e3<\/h5>\n\n\u6807\u7b7e\u7528\u9014\u9002\u7528\u4f4d\u7f6e\u793a\u4f8b<\/tr>\n\n\n\n\n\n\n\n\n\n\n\n\n
          @param<\/td>\n\u63cf\u8ff0\u65b9\u6cd5\u53c2\u6570\u7684\u540d\u79f0\u548c\u542b\u4e49<\/td>\n\u65b9\u6cd5<\/td>\n@param userId \u7528\u6237\u7684\u552f\u4e00\u6807\u8bc6，\u4e0d\u80fd\u4e3a null<\/td>\n<\/tr>\n
          @return<\/td>\n\u63cf\u8ff0\u65b9\u6cd5\u8fd4\u56de\u503c\u7684\u542b\u4e49<\/td>\n\u65b9\u6cd5<\/td>\n@return \u683c\u5f0f\u5316\u540e\u7684\u7528\u6237\u4fe1\u606f\u5b57\u7b26\u4e32<\/td>\n<\/tr>\n
          @throws \/ @exception<\/td>\n\u63cf\u8ff0\u65b9\u6cd5\u53ef\u80fd\u629b\u51fa\u7684\u5f02\u5e38\u53ca\u89e6\u53d1\u6761\u4ef6<\/td>\n\u65b9\u6cd5<\/td>\n@throws IllegalArgumentException \u5f53 userId \u4e3a\u7a7a\u65f6\u629b\u51fa<\/td>\n<\/tr>\n
          @see<\/td>\n\u5f15\u7528\u5176\u4ed6\u76f8\u5173\u7684\u7c7b\u3001\u65b9\u6cd5\u6216\u6587\u6863<\/td>\n\u7c7b\u3001\u65b9\u6cd5<\/td>\n@see UserService#findById(Long)<\/td>\n<\/tr>\n
          @since<\/td>\n\u6807\u8bb0\u5f15\u5165\u8be5\u5143\u7d20\u7684\u9879\u76ee\u7248\u672c<\/td>\n\u7c7b\u3001\u65b9\u6cd5<\/td>\n@since 2.1.0<\/td>\n<\/tr>\n
          @deprecated<\/td>\n\u6807\u8bb0\u8be5\u5143\u7d20\u5df2\u5e9f\u5f03，\u5efa\u8bae\u4f7f\u7528\u66ff\u4ee3\u65b9\u6848<\/td>\n\u7c7b\u3001\u65b9\u6cd5<\/td>\n@deprecated \u8bf7\u4f7f\u7528 {@link #newMethod()} \u66ff\u4ee3<\/td>\n<\/tr>\n
          @author<\/td>\n\u6807\u8bb0\u4ee3\u7801\u4f5c\u8005<\/td>\n\u7c7b\u3001\u63a5\u53e3<\/td>\n@author \u5f20\u4e09<\/td>\n<\/tr>\n
          @version<\/td>\n\u6807\u8bb0\u5f53\u524d\u7248\u672c\u53f7<\/td>\n\u7c7b\u3001\u63a5\u53e3<\/td>\n@version 1.0.0<\/td>\n<\/tr>\n
          {@link}<\/td>\n\u5728\u6ce8\u91ca\u4e2d\u63d2\u5165\u53ef\u70b9\u51fb\u7684\u8d85\u94fe\u63a5\u5f15\u7528<\/td>\n\u4efb\u610f\u4f4d\u7f6e<\/td>\n{@link User} \u6216 {@link User#getName()}<\/td>\n<\/tr>\n
          {@code}<\/td>\n\u5c06\u5185\u5bb9\u4ee5\u4ee3\u7801\u5b57\u4f53\u6e32\u67d3<\/td>\n\u4efb\u610f\u4f4d\u7f6e<\/td>\n{@code true}<\/td>\n<\/tr>\n
          @serial<\/td>\n\u63cf\u8ff0\u5e8f\u5217\u5316\u5b57\u6bb5<\/td>\n\u5b57\u6bb5<\/td>\n@serial \u9ed8\u8ba4\u5e8f\u5217\u5316\u7248\u672c\u53f7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          2.3.2 \u7c7b\u7ea7\u522b\u7684 Javadoc \u793a\u4f8b<\/h5>\n

          package<\/span> com.<\/span>example.<\/span>order.<\/span>service<\/span>;<\/span><\/p>\n

          import<\/span> java.<\/span>math.<\/span><\/span>BigDecimal<\/span><\/span>;<\/span>
          \nimport<\/span> java.<\/span>time.<\/span><\/span>LocalDateTime<\/span><\/span>;<\/span><\/p>\n

          \/**
          \n * \u8ba2\u5355\u7ed3\u7b97\u670d\u52a1，\u8d1f\u8d23\u5904\u7406\u8ba2\u5355\u7684\u4ef7\u683c\u8ba1\u7b97\u4e0e\u4f18\u60e0\u53e0\u52a0\u903b\u8f91\u3002
          \n *
          \n * <p>\u8be5\u7c7b\u63d0\u4f9b\u4ee5\u4e0b\u6838\u5fc3\u529f\u80fd：<\/p>
          \n * <ul>
          \n * <li>\u57fa\u7840\u4ef7\u683c\u8ba1\u7b97\u2014\u2014\u6839\u636e\u5546\u54c1\u5355\u4ef7\u4e0e\u6570\u91cf\u8ba1\u7b97\u5c0f\u8ba1<\/li>
          \n * <li>\u4f1a\u5458\u6298\u6263\u53e0\u52a0\u2014\u2014\u6839\u636e\u7528\u6237\u7b49\u7ea7\u4eab\u53d7\u4e0d\u540c\u6298\u6263\u529b\u5ea6<\/li>
          \n * <li>\u6ee1\u51cf\u4f18\u60e0\u8ba1\u7b97\u2014\u2014\u652f\u6301\u5e73\u53f0\u7ea7\u6ee1\u51cf\u6d3b\u52a8\u7684\u5b9e\u65f6\u8ba1\u7b97<\/li>
          \n * <li>\u4f18\u60e0\u5238\u62b5\u6263\u2014\u2014\u652f\u6301\u591a\u79cd\u4f18\u60e0\u5238\u7c7b\u578b\u7684\u53e0\u52a0\u4f7f\u7528<\/li>
          \n * <\/ul>
          \n *
          \n * <p>\u4f7f\u7528\u793a\u4f8b：<\/p>
          \n * <pre>{@code
          \n * OrderSettlementService service = new OrderSettlementService();
          \n * SettlementResult result = service.settle(order, coupons);
          \n * System.out.println("\u5b9e\u4ed8\u91d1\u989d：" + result.getFinalAmount());
          \n * }<\/pre>
          \n *
          \n * <p><strong>\u7ebf\u7a0b\u5b89\u5168\u6027：<\/strong>\u8be5\u7c7b\u662f\u65e0\u72b6\u6001\u7684，\u7ebf\u7a0b\u5b89\u5168\u3002<\/p>
          \n *
          \n * @author \u5f20\u4e09
          \n * @version 2.1.0
          \n * @since 1.0.0
          \n * @see CouponService
          \n * @see DiscountRuleEngine
          \n *\/<\/span>
          \npublic<\/span> class<\/span> OrderSettlementService<\/span> {<\/span><\/p>\n

          \/**
          \n * \u6700\u4f4e\u8ba2\u5355\u91d1\u989d\u9608\u503c，\u4f4e\u4e8e\u6b64\u91d1\u989d\u7684\u8ba2\u5355\u4e0d\u53c2\u4e0e\u6ee1\u51cf\u8ba1\u7b97\u3002
          \n * \u5355\u4f4d：\u5143（\u4eba\u6c11\u5e01）
          \n *\/<\/span>
          \n private<\/span> static<\/span> final<\/span> BigDecimal<\/span> MIN_ORDER_AMOUNT<\/span> =<\/span> new<\/span> BigDecimal<\/span>(<\/span>"0.01"<\/span>)<\/span>;<\/span><\/p>\n

          \/\/ …<\/span>
          \n}<\/span><\/p>\n

          2.3.3 \u65b9\u6cd5\u7ea7\u522b\u7684 Javadoc \u793a\u4f8b<\/h5>\n

          \/**
          \n * \u5bf9\u6307\u5b9a\u8ba2\u5355\u6267\u884c\u7ed3\u7b97\u8ba1\u7b97，\u8fd4\u56de\u5305\u542b\u660e\u7ec6\u7684\u7ed3\u7b97\u7ed3\u679c\u3002
          \n *
          \n * <p>\u7ed3\u7b97\u6d41\u7a0b\u5206\u4e3a\u4ee5\u4e0b\u6b65\u9aa4：<\/p>
          \n * <ol>
          \n * <li>\u6821\u9a8c\u8ba2\u5355\u72b6\u6001\u7684\u5408\u6cd5\u6027<\/li>
          \n * <li>\u8ba1\u7b97\u5546\u54c1\u7684\u57fa\u7840\u603b\u4ef7<\/li>
          \n * <li>\u6309\u4f18\u5148\u7ea7\u4f9d\u6b21\u5e94\u7528\u4f1a\u5458\u6298\u6263\u3001\u6ee1\u51cf\u4f18\u60e0\u3001\u4f18\u60e0\u5238<\/li>
          \n * <li>\u6c47\u603b\u751f\u6210\u7ed3\u7b97\u7ed3\u679c\u5bf9\u8c61<\/li>
          \n * <\/ol>
          \n *
          \n * @param order \u5f85\u7ed3\u7b97\u7684\u8ba2\u5355\u5bf9\u8c61，\u4e0d\u80fd\u4e3a {@code null}
          \n * @param couponIds \u7528\u6237\u9009\u62e9\u4f7f\u7528\u7684\u4f18\u60e0\u5238 ID \u5217\u8868，\u53ef\u4ee5\u4e3a\u7a7a\u5217\u8868\u4f46\u4e0d\u80fd\u4e3a {@code null}
          \n * @return \u5305\u542b\u5404\u9879\u91d1\u989d\u660e\u7ec6\u7684\u7ed3\u7b97\u7ed3\u679c\u5bf9\u8c61，\u6c38\u8fdc\u4e0d\u4f1a\u8fd4\u56de {@code null}
          \n * @throws IllegalArgumentException \u5f53 {@code order} \u4e3a {@code null} \u65f6\u629b\u51fa
          \n * @throws OrderStatusException \u5f53\u8ba2\u5355\u72b6\u6001\u4e0d\u662f"\u5f85\u652f\u4ed8"\u65f6\u629b\u51fa
          \n * @throws CouponExpiredException \u5f53\u4f7f\u7528\u7684\u4f18\u60e0\u5238\u5df2\u8fc7\u671f\u65f6\u629b\u51fa
          \n * @see OrderValidator#validate(Order)
          \n * @since 1.2.0
          \n *\/<\/span>
          \npublic<\/span> SettlementResult<\/span> settle<\/span>(<\/span>Order<\/span> order,<\/span> List<\/span><<\/span>Long<\/span>><\/span><\/span> couponIds)<\/span> {<\/span>
          \n \/\/ \u53c2\u6570\u6821\u9a8c<\/span>
          \n Objects<\/span>.<\/span>requireNonNull<\/span>(<\/span>order,<\/span> "\u8ba2\u5355\u5bf9\u8c61\u4e0d\u80fd\u4e3a\u7a7a"<\/span>)<\/span>;<\/span>
          \n Objects<\/span>.<\/span>requireNonNull<\/span>(<\/span>couponIds,<\/span> "\u4f18\u60e0\u5238\u5217\u8868\u4e0d\u80fd\u4e3a\u7a7a"<\/span>)<\/span>;<\/span><\/p>\n

          \/\/ … \u4e1a\u52a1\u903b\u8f91<\/span>
          \n}<\/span><\/p>\n

          2.3.4 \u751f\u6210 Javadoc HTML \u6587\u6863<\/h5>\n

          Javadoc \u5de5\u5177\u662f JDK \u81ea\u5e26\u7684\u6587\u6863\u751f\u6210\u5de5\u5177，\u5b83\u80fd\u591f\u626b\u63cf\u6e90\u4ee3\u7801\u4e2d\u7684 \/** *\/ \u6ce8\u91ca，\u751f\u6210\u7ed3\u6784\u5316\u7684 HTML API \u6587\u6863\u2014\u2014\u5c31\u50cf\u4f60\u5728\u7f51\u4e0a\u770b\u5230\u7684 Java \u5b98\u65b9 API \u6587\u6863\u90a3\u6837\u3002<\/p>\n

          \u901a\u8fc7\u547d\u4ee4\u884c\u751f\u6210：<\/p>\n

          # \u57fa\u672c\u7528\u6cd5：\u4e3a com.example \u5305\u4e0b\u7684\u6240\u6709\u7c7b\u751f\u6210\u6587\u6863<\/span>
          \njavadoc -d<\/span> docs\/api -sourcepath<\/span> src\/main\/java -subpackages<\/span> com.example<\/p>\n

          # \u6307\u5b9a\u7f16\u7801\u3001\u4f5c\u8005\u3001\u7248\u672c\u4fe1\u606f<\/span>
          \njavadoc -d<\/span> docs\/api \\\\<\/span>
          \n -sourcepath<\/span> src\/main\/java \\\\<\/span>
          \n -subpackages<\/span> com.example \\\\<\/span>
          \n -encoding<\/span> UTF-8 \\\\<\/span>
          \n -charset<\/span> UTF-8 \\\\<\/span>
          \n -author<\/span> \\\\<\/span>
          \n -version<\/span> \\\\<\/span>
          \n -windowtitle<\/span> "\u8ba2\u5355\u7cfb\u7edf API \u6587\u6863"<\/span><\/p>\n

          # \u9650\u5236\u8bbf\u95ee\u7ea7\u522b（\u53ea\u751f\u6210 public \u548c protected \u7684\u6587\u6863）<\/span>
          \njavadoc -d<\/span> docs\/api \\\\<\/span>
          \n -sourcepath<\/span> src\/main\/java \\\\<\/span>
          \n -subpackages<\/span> com.example \\\\<\/span>
          \n -protected<\/span><\/p>\n

          \u901a\u8fc7 Maven \u63d2\u4ef6\u751f\u6210：<\/p>\n

          <!– pom.xml \u4e2d\u914d\u7f6e Maven Javadoc \u63d2\u4ef6 –><\/span>
          \n<<\/span>build<\/span>><\/span><\/span>
          \n <<\/span>plugins<\/span>><\/span><\/span>
          \n <<\/span>plugin<\/span>><\/span><\/span>
          \n <<\/span>groupId<\/span>><\/span><\/span>org.apache.maven.plugins<\/<\/span>groupId<\/span>><\/span><\/span>
          \n <<\/span>artifactId<\/span>><\/span><\/span>maven-javadoc-plugin<\/<\/span>artifactId<\/span>><\/span><\/span>
          \n <<\/span>version<\/span>><\/span><\/span>3.6.0<\/<\/span>version<\/span>><\/span><\/span>
          \n <<\/span>configuration<\/span>><\/span><\/span>
          \n <<\/span>encoding<\/span>><\/span><\/span>UTF-8<\/<\/span>encoding<\/span>><\/span><\/span>
          \n <<\/span>charset<\/span>><\/span><\/span>UTF-8<\/<\/span>charset<\/span>><\/span><\/span>
          \n <<\/span>docencoding<\/span>><\/span><\/span>UTF-8<\/<\/span>docencoding<\/span>><\/span><\/span>
          \n <<\/span>show<\/span>><\/span><\/span>protected<\/<\/span>show<\/span>><\/span><\/span>
          \n <<\/span>author<\/span>><\/span><\/span>true<\/<\/span>author<\/span>><\/span><\/span>
          \n <<\/span>version<\/span>><\/span><\/span>true<\/<\/span>version<\/span>><\/span><\/span>
          \n <\/<\/span>configuration<\/span>><\/span><\/span>
          \n <<\/span>executions<\/span>><\/span><\/span>
          \n <<\/span>execution<\/span>><\/span><\/span>
          \n <<\/span>id<\/span>><\/span><\/span>attach-javadocs<\/<\/span>id<\/span>><\/span><\/span>
          \n <<\/span>phase<\/span>><\/span><\/span>package<\/<\/span>phase<\/span>><\/span><\/span>
          \n <<\/span>goals<\/span>><\/span><\/span>
          \n <<\/span>goal<\/span>><\/span><\/span>jar<\/<\/span>goal<\/span>><\/span><\/span>
          \n <\/<\/span>goals<\/span>><\/span><\/span>
          \n <\/<\/span>execution<\/span>><\/span><\/span>
          \n <\/<\/span>executions<\/span>><\/span><\/span>
          \n <\/<\/span>plugin<\/span>><\/span><\/span>
          \n <\/<\/span>plugins<\/span>><\/span><\/span>
          \n<\/<\/span>build<\/span>><\/span><\/span><\/p>\n

          \u6267\u884c mvn javadoc:javadoc \u5373\u53ef\u5728 target\/site\/apidocs\/ \u76ee\u5f55\u4e0b\u751f\u6210 HTML \u6587\u6863\u3002<\/p>\n

          \n

          \u4e09\u3001\u6ce8\u91ca\u7684\u6700\u4f73\u5b9e\u8df5<\/h3>\n

          3.1 \u5e94\u8be5\u5199\u4ec0\u4e48\u6ce8\u91ca<\/h4>\n

          \u6ce8\u91ca\u7684\u6838\u5fc3\u4ef7\u503c\u5728\u4e8e\u8868\u8fbe\u90a3\u4e9b\u65e0\u6cd5\u4ece\u4ee3\u7801\u672c\u8eab\u76f4\u63a5\u8bfb\u51fa\u7684\u4fe1\u606f\u3002\u9ad8\u8d28\u91cf\u7684\u6ce8\u91ca\u901a\u5e38\u5305\u542b\u4ee5\u4e0b\u5185\u5bb9：<\/p>\n

          3.1.1 \u89e3\u91ca"\u4e3a\u4ec0\u4e48"\u800c\u975e"\u505a\u4ec0\u4e48"<\/h5>\n

          \u4ee3\u7801\u5df2\u7ecf\u5c55\u793a\u4e86"\u505a\u4e86\u4ec0\u4e48"，\u6ce8\u91ca\u5e94\u89e3\u91ca\u80cc\u540e\u7684\u8bbe\u8ba1\u51b3\u7b56\u3001\u4e1a\u52a1\u89c4\u5219\u548c\u6743\u8861\u8003\u91cf\u3002<\/p>\n

          \/\/ \u5dee：\u590d\u8ff0\u4ee3\u7801<\/span>
          \n\/\/ \u5c06\u7ed3\u679c\u4e58\u4ee5 1.2<\/span>
          \ndouble<\/span> result =<\/span> base *<\/span> 1.2<\/span>;<\/span><\/p>\n

          \/\/ \u597d：\u89e3\u91ca\u4e3a\u4ec0\u4e48<\/span>
          \n\/\/ \u6839\u636e\u8d22\u52a1\u90e8\u95e8 2025-03 \u53f7\u6587\u4ef6，\u6240\u6709\u62a5\u4ef7\u9700\u52a0\u6536 20% \u98ce\u9669\u7ba1\u7406\u9644\u52a0\u8d39<\/span>
          \ndouble<\/span> result =<\/span> base *<\/span> 1.2<\/span>;<\/span><\/p>\n

          \/\/ \u5dee：\u663e\u800c\u6613\u89c1\u7684\u6ce8\u91ca<\/span>
          \n\/\/ \u904d\u5386\u7528\u6237\u5217\u8868<\/span>
          \nfor<\/span> (<\/span>User<\/span> user :<\/span> userList)<\/span> {<\/span>
          \n \/\/ \u6253\u5370\u7528\u6237\u540d<\/span>
          \n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>user.<\/span>getName<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
          \n}<\/span><\/p>\n

          \/\/ \u597d：\u6ce8\u91ca\u5e94\u5220\u9664，\u56e0\u4e3a\u4ee3\u7801\u5df2\u7ecf\u8db3\u591f\u6e05\u6670<\/span>
          \nfor<\/span> (<\/span>User<\/span> user :<\/span> userList)<\/span> {<\/span>
          \n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>user.<\/span>getName<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
          \n}<\/span><\/p>\n

          3.1.2 \u6807\u6ce8\u9b54\u6cd5\u6570\u5b57\u548c\u8fb9\u754c\u503c<\/h5>\n

          \u4ee3\u7801\u4e2d\u51fa\u73b0\u7684\u786c\u7f16\u7801\u6570\u5b57\u901a\u5e38\u90fd\u6709\u5176\u4e1a\u52a1\u542b\u4e49，\u9700\u8981\u901a\u8fc7\u6ce8\u91ca\u4e88\u4ee5\u8bf4\u660e\u3002<\/p>\n

          \/\/ \u5dee：\u542b\u4e49\u4e0d\u660e\u7684\u6570\u5b57<\/span>
          \nif<\/span> (<\/span>user.<\/span>getAge<\/span>(<\/span>)<\/span> <<\/span> 18<\/span>)<\/span> {<\/span>
          \n throw<\/span> new<\/span> BusinessException<\/span>(<\/span>"\u4e0d\u7b26\u5408\u6761\u4ef6"<\/span>)<\/span>;<\/span>
          \n}<\/span>
          \nif<\/span> (<\/span>orderList.<\/span>size<\/span>(<\/span>)<\/span> ><\/span> 100<\/span>)<\/span> {<\/span>
          \n pageQuery<\/span>(<\/span>)<\/span>;<\/span>
          \n}<\/span><\/p>\n

          \/\/ \u597d：\u5bf9\u8fb9\u754c\u503c\u8fdb\u884c\u89e3\u91ca<\/span>
          \n\/\/ \u6839\u636e\u300a\u672a\u6210\u5e74\u4eba\u4fdd\u62a4\u6cd5\u300b，\u4e0d\u6ee1 18 \u5468\u5c81\u7684\u7528\u6237\u4e0d\u53ef\u53c2\u4e0e\u672c\u6d3b\u52a8<\/span>
          \nif<\/span> (<\/span>user.<\/span>getAge<\/span>(<\/span>)<\/span> <<\/span> 18<\/span>)<\/span> {<\/span>
          \n throw<\/span> new<\/span> BusinessException<\/span>(<\/span>"\u4e0d\u7b26\u5408\u53c2\u4e0e\u6761\u4ef6"<\/span>)<\/span>;<\/span>
          \n}<\/span>
          \n\/\/ \u5355\u6b21\u67e5\u8be2\u8d85\u8fc7 100 \u6761\u65f6\u542f\u7528\u5206\u9875，\u9632\u6b62\u6570\u636e\u5e93\u5168\u8868\u626b\u63cf\u5f15\u53d1\u6162\u67e5\u8be2<\/span>
          \nif<\/span> (<\/span>orderList.<\/span>size<\/span>(<\/span>)<\/span> ><\/span> 100<\/span>)<\/span> {<\/span>
          \n pageQuery<\/span>(<\/span>)<\/span>;<\/span>
          \n}<\/span><\/p>\n

          3.1.3 \u6807\u6ce8\u5df2\u77e5\u7f3a\u9677\u548c\u4e34\u65f6\u65b9\u6848<\/h5>\n

          \u5f53\u5b58\u5728\u6280\u672f\u503a\u52a1\u6216\u4e34\u65f6\u6027\u7684\u89e3\u51b3\u65b9\u6848\u65f6，\u4f7f\u7528\u6807\u51c6\u6807\u8bb0\u8fdb\u884c\u6ce8\u91ca，\u65b9\u4fbf\u540e\u7eed\u8ffd\u8e2a\u3002<\/p>\n

          \/\/ TODO: \u5f53\u524d\u4f7f\u7528\u5185\u5b58\u7f13\u5b58，\u9ad8\u5e76\u53d1\u4e0b\u5b58\u5728\u6570\u636e\u4e00\u81f4\u6027\u95ee\u9898，<\/span>
          \n\/\/ \u8ba1\u5212\u5728 v2.5.0 \u8fc1\u79fb\u81f3 Redis \u5206\u5e03\u5f0f\u7f13\u5b58<\/span>
          \nprivate<\/span> Map<\/span><<\/span>String<\/span>,<\/span> User<\/span>><\/span><\/span> userCache =<\/span> new<\/span> ConcurrentHashMap<\/span><<\/span>><\/span><\/span>(<\/span>)<\/span>;<\/span><\/p>\n

          \/\/ FIXME: \u4ee5\u4e0b\u6b63\u5219\u8868\u8fbe\u5f0f\u5728 JDK 17 \u73af\u5883\u4e0b\u5b58\u5728\u6027\u80fd\u56de\u9000，<\/span>
          \n\/\/ \u9700\u8981\u7814\u7a76\u66ff\u4ee3\u65b9\u6848，\u53c2\u89c1 ISSUE-#2847<\/span>
          \nprivate<\/span> static<\/span> final<\/span> Pattern<\/span> PHONE_PATTERN<\/span> =<\/span>
          \n Pattern<\/span>.<\/span>compile<\/span>(<\/span>"^1[3-9]\\\\\\\\d{9}$"<\/span>)<\/span>;<\/span><\/p>\n

          \/\/ HACK: \u7b2c\u4e09\u65b9\u652f\u4ed8\u56de\u8c03SDK\u5728\u8d85\u65f6\u573a\u666f\u4e0b\u5b58\u5728\u5185\u5b58\u6cc4\u6f0f，<\/span>
          \n\/\/ \u901a\u8fc7\u5b9a\u65f6\u6e05\u7406\u56de\u8c03\u5bf9\u8c61\u6765\u4e34\u65f6\u89c4\u907f，\u7b49\u5f85\u5b98\u65b9 SDK v3.2.0 \u4fee\u590d<\/span>
          \nprivate<\/span> void<\/span> cleanCallbackRegistry<\/span>(<\/span>)<\/span> {<\/span>
          \n callbackRegistry.<\/span>clear<\/span>(<\/span>)<\/span>;<\/span>
          \n}<\/span><\/p>\n\n\u6807\u8bb0\u542b\u4e49\u4f7f\u7528\u573a\u666f<\/tr>\n\n\n\n\n\n\n\n
          TODO<\/td>\n\u5f85\u5b8c\u6210\u7684\u529f\u80fd\u6216\u4f18\u5316<\/td>\n\u529f\u80fd\u5c1a\u672a\u5b9e\u73b0\u6216\u9700\u8981\u540e\u7eed\u589e\u5f3a<\/td>\n<\/tr>\n
          FIXME<\/td>\n\u5b58\u5728\u5df2\u77e5\u7f3a\u9677\u9700\u8981\u4fee\u590d<\/td>\n\u4ee3\u7801\u80fd\u8fd0\u884c\u4f46\u6709\u6f5c\u5728\u7684 Bug<\/td>\n<\/tr>\n
          HACK<\/td>\n\u4e34\u65f6\u6027\u7684\u53d8\u901a\u65b9\u6848<\/td>\n\u4e3a\u89e3\u51b3\u7d27\u6025\u95ee\u9898\u800c\u91c7\u7528\u7684\u975e\u7406\u60f3\u65b9\u6848<\/td>\n<\/tr>\n
          XXX<\/td>\n\u9700\u8981\u7279\u522b\u6ce8\u610f\u7684\u4ee3\u7801<\/td>\n\u5b9e\u73b0\u65b9\u5f0f\u5b58\u5728\u4e89\u8bae\u6216\u98ce\u9669<\/td>\n<\/tr>\n
          NOTE<\/td>\n\u9700\u8981\u7279\u522b\u8bf4\u660e\u7684\u4e8b\u9879<\/td>\n\u8865\u5145\u91cd\u8981\u7684\u4e0a\u4e0b\u6587\u4fe1\u606f<\/td>\n<\/tr>\n
          OPTIMIZE<\/td>\n\u5b58\u5728\u6027\u80fd\u4f18\u5316\u7a7a\u95f4<\/td>\n\u5f53\u524d\u5b9e\u73b0\u6b63\u786e\u4f46\u6548\u7387\u4e0d\u9ad8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          3.1.4 \u4e3a\u516c\u5171 API \u7f16\u5199\u5b8c\u6574\u7684 Javadoc<\/h5>\n

          \u4e00\u4e2a\u57fa\u672c\u7684\u5171\u8bc6\u662f：\u6240\u6709 public \u548c protected \u7684\u7c7b\u3001\u63a5\u53e3\u3001\u65b9\u6cd5\u3001\u5b57\u6bb5，\u90fd\u5fc5\u987b\u7f16\u5199 Javadoc \u6ce8\u91ca\u3002\u8fd9\u662f\u7ed9\u4f7f\u7528\u4f60\u4ee3\u7801\u7684\u5176\u4ed6\u5f00\u53d1\u8005（\u5305\u62ec\u4e09\u4e2a\u6708\u540e\u7684\u4f60\u81ea\u5df1）\u770b\u7684\u8bf4\u660e\u4e66\u3002<\/p>\n

          \/**
          \n * \u6839\u636e\u7528\u6237\u7b49\u7ea7\u548c\u6d88\u8d39\u91d1\u989d\u8ba1\u7b97\u9002\u7528\u7684\u4f1a\u5458\u6298\u6263\u7387\u3002
          \n *
          \n * <p>\u6298\u6263\u8ba1\u7b97\u89c4\u5219\u5982\u4e0b：<\/p>
          \n * <table>
          \n * <tr><th>\u7528\u6237\u7b49\u7ea7<\/th><th>\u6d88\u8d39\u91d1\u989d\u533a\u95f4<\/th><th>\u6298\u6263\u7387<\/th><\/tr>
          \n * <tr><td>\u666e\u901a\u4f1a\u5458<\/td><td>0 – 1000<\/td><td>98%<\/td><\/tr>
          \n * <tr><td>\u666e\u901a\u4f1a\u5458<\/td><td>1000+<\/td><td>95%<\/td><\/tr>
          \n * <tr><td>\u91d1\u724c\u4f1a\u5458<\/td><td>0 – 5000<\/td><td>90%<\/td><\/tr>
          \n * <tr><td>\u91d1\u724c\u4f1a\u5458<\/td><td>5000+<\/td><td>85%<\/td><\/tr>
          \n * <\/table>
          \n *
          \n * @param userLevel \u7528\u6237\u7b49\u7ea7，\u53c2\u89c1 {@link UserLevel} \u679a\u4e3e
          \n * @param totalSpent \u7528\u6237\u7d2f\u8ba1\u6d88\u8d39\u91d1\u989d（\u5355\u4f4d：\u5143），\u5fc5\u987b\u4e3a\u975e\u8d1f\u6570
          \n * @return \u6298\u6263\u7387，\u8303\u56f4\u5728 {@code [0.0, 1.0]} \u4e4b\u95f4，{@code 1.0} \u8868\u793a\u65e0\u6298\u6263
          \n * @throws IllegalArgumentException \u5f53 {@code totalSpent} \u4e3a\u8d1f\u6570\u65f6\u629b\u51fa
          \n * @since 2.0.0
          \n *\/<\/span>
          \npublic<\/span> double<\/span> getDiscountRate<\/span>(<\/span>UserLevel<\/span> userLevel,<\/span> double<\/span> totalSpent)<\/span> {<\/span>
          \n \/\/ …<\/span>
          \n}<\/span><\/p>\n

          3.2 \u4e0d\u5e94\u8be5\u5199\u4ec0\u4e48\u6ce8\u91ca<\/h4>\n

          \u201c\u597d\u6ce8\u91ca"\u7684\u53cd\u9762\u4e0d\u662f"\u6ca1\u6ce8\u91ca\u201d，\u800c\u662f"\u574f\u6ce8\u91ca"\u3002\u574f\u6ce8\u91ca\u6bd4\u6ca1\u6ce8\u91ca\u66f4\u6709\u5bb3\u2014\u2014\u5b83\u4e0d\u4ec5\u5360\u7528\u9605\u8bfb\u65f6\u95f4，\u8fd8\u53ef\u80fd\u63d0\u4f9b\u9519\u8bef\u7684\u4fe1\u606f，\u8bef\u5bfc\u540e\u6765\u8005\u3002<\/p>\n

          3.2.1 \u4e0d\u8981\u590d\u8ff0\u4ee3\u7801<\/h5>\n

          \/\/ \u5dee：\u590d\u8ff0\u4ee3\u7801，\u6beb\u65e0\u4ef7\u503c<\/span>
          \n\/\/ \u521b\u5efa\u4e00\u4e2a\u7528\u6237\u5bf9\u8c61<\/span>
          \nUser<\/span> user =<\/span> new<\/span> User<\/span>(<\/span>)<\/span>;<\/span>
          \n\/\/ \u8bbe\u7f6e\u7528\u6237\u540d<\/span>
          \nuser.<\/span>setName<\/span>(<\/span>"\u5f20\u4e09"<\/span>)<\/span>;<\/span>
          \n\/\/ \u8bbe\u7f6e\u5e74\u9f84\u4e3a 25<\/span>
          \nuser.<\/span>setAge<\/span>(<\/span>25<\/span>)<\/span>;<\/span>
          \n\/\/ \u8fd4\u56de\u7528\u6237<\/span>
          \nreturn<\/span> user;<\/span><\/p>\n

          \/\/ \u597d：\u65e0\u9700\u6ce8\u91ca，\u4ee3\u7801\u5df2\u7ecf\u81ea\u89e3\u91ca<\/span>
          \nUser<\/span> user =<\/span> new<\/span> User<\/span>(<\/span>)<\/span>;<\/span>
          \nuser.<\/span>setName<\/span>(<\/span>"\u5f20\u4e09"<\/span>)<\/span>;<\/span>
          \nuser.<\/span>setAge<\/span>(<\/span>25<\/span>)<\/span>;<\/span>
          \nreturn<\/span> user;<\/span><\/p>\n

          3.2.2 \u4e0d\u8981\u7528\u6ce8\u91ca\u6765\u5f25\u8865\u7cdf\u7cd5\u7684\u547d\u540d<\/h5>\n

          \/\/ \u5dee：\u7528\u6ce8\u91ca\u89e3\u91ca\u6a21\u7cca\u7684\u547d\u540d<\/span>
          \n\/\/ \u83b7\u53d6 30 \u5929\u5185\u7684\u6d3b\u8dc3\u7528\u6237\u6570<\/span>
          \npublic<\/span> int<\/span> getU<\/span>(<\/span>)<\/span> {<\/span>
          \n return<\/span> this<\/span>.<\/span>activeUsers30d;<\/span>
          \n}<\/span><\/p>\n

          \/\/ \u597d：\u65b9\u6cd5\u540d\u548c\u53d8\u91cf\u540d\u672c\u8eab\u5c31\u662f\u6700\u597d\u7684\u6ce8\u91ca<\/span>
          \npublic<\/span> int<\/span> getActiveUserCountWithin30Days<\/span>(<\/span>)<\/span> {<\/span>
          \n return<\/span> this<\/span>.<\/span>activeUserCountWithin30Days;<\/span>
          \n}<\/span><\/p>\n

          3.2.3 \u4e0d\u8981\u4fdd\u7559\u8fc7\u65f6\u7684\u6ce8\u91ca<\/h5>\n

          \/\/ \u5dee：\u6ce8\u91ca\u4e0e\u4ee3\u7801\u4e0d\u4e00\u81f4（\u4ee3\u7801\u5df2\u4fee\u6539，\u6ce8\u91ca\u672a\u66f4\u65b0）<\/span>
          \n\/\/ \u8ba1\u7b97\u5355\u4e2a\u5546\u54c1\u7684 8 \u6298\u4f18\u60e0\u4ef7\u683c<\/span>
          \npublic<\/span> double<\/span> calculateDiscount<\/span>(<\/span>double<\/span> price)<\/span> {<\/span>
          \n return<\/span> price *<\/span> 0.75<\/span>;<\/span> \/\/ \u5b9e\u9645\u662f 75 \u6298，\u6ce8\u91ca\u5199\u7684\u662f 8 \u6298<\/span>
          \n}<\/span><\/p>\n

          \/\/ \u597d：\u4fdd\u6301\u6ce8\u91ca\u4e0e\u4ee3\u7801\u540c\u6b65\u66f4\u65b0<\/span>
          \n\/\/ \u8ba1\u7b97\u5355\u4e2a\u5546\u54c1\u7684 75 \u6298\u4f18\u60e0\u4ef7\u683c（2025\u5e74\u590f\u5b63\u4fc3\u9500\u8c03\u6574，\u539f\u4e3a 8 \u6298）<\/span>
          \npublic<\/span> double<\/span> calculateDiscount<\/span>(<\/span>double<\/span> price)<\/span> {<\/span>
          \n return<\/span> price *<\/span> 0.75<\/span>;<\/span>
          \n}<\/span><\/p>\n

          3.2.4 \u4e0d\u8981\u5199\u5927\u6bb5\u7684"\u5e9f\u5f03\u4ee3\u7801\u6ce8\u91ca"<\/h5>\n

          \/\/ \u5dee：\u4fdd\u7559\u5e9f\u5f03\u4ee3\u7801\u4f5c\u4e3a\u6ce8\u91ca\u2014\u2014\u8fd9\u4f1a\u4f7f\u6587\u4ef6\u53d8\u5f97\u81c3\u80bf<\/span>
          \npublic<\/span> void<\/span> processOrder<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span>
          \n \/\/ \u4ee5\u4e0b\u4e3a\u65e7\u7248\u6d41\u7a0b，\u5df2\u4e8e 2024-12-01 \u5e9f\u5f03<\/span>
          \n \/\/ validateOrder(order);<\/span>
          \n \/\/ calculateTax(oldTaxRate);<\/span>
          \n \/\/ applyOldDiscount(order);<\/span>
          \n \/\/ sendNotification(order);<\/span><\/p>\n

          \/\/ \u65b0\u7248\u6d41\u7a0b<\/span>
          \n validateOrderV2<\/span>(<\/span>order)<\/span>;<\/span>
          \n calculateTaxV2<\/span>(<\/span>)<\/span>;<\/span>
          \n applyNewDiscount<\/span>(<\/span>order)<\/span>;<\/span>
          \n}<\/span><\/p>\n

          \/\/ \u597d：\u76f4\u63a5\u5220\u9664\u5e9f\u5f03\u4ee3\u7801，Git \u5386\u53f2\u4f1a\u4fdd\u7559\u6240\u6709\u8bb0\u5f55<\/span>
          \npublic<\/span> void<\/span> processOrder<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span>
          \n validateOrderV2<\/span>(<\/span>order)<\/span>;<\/span>
          \n calculateTaxV2<\/span>(<\/span>)<\/span>;<\/span>
          \n applyNewDiscount<\/span>(<\/span>order)<\/span>;<\/span>
          \n}<\/span><\/p>\n

          \n

          \u56db\u3001Java \u547d\u540d\u89c4\u8303<\/h3>\n

          \u547d\u540d\u662f\u7f16\u7a0b\u4e2d\u6700\u56f0\u96be\u7684\u4e8b\u60c5\u4e4b\u4e00\u3002\u4e00\u4e2a\u597d\u7684\u540d\u5b57\u80fd\u591f\u51c6\u786e\u4f20\u8fbe\u610f\u56fe，\u51cf\u5c11\u5bf9\u6ce8\u91ca\u7684\u4f9d\u8d56\u3002Java \u793e\u533a\u7ecf\u8fc7\u6570\u5341\u5e74\u7684\u6f14\u5316，\u5f62\u6210\u4e86\u4e00\u5957\u516c\u8ba4\u7684\u547d\u540d\u89c4\u8303\u3002<\/p>\n

          4.1 \u5305\u547d\u540d\u89c4\u8303<\/h4>\n

          \u5305\u540d\u5168\u90e8\u4f7f\u7528\u5c0f\u5199\u5b57\u6bcd，\u4ee5\u53cd\u8f6c\u7684\u57df\u540d\u4f5c\u4e3a\u524d\u7f00，\u5355\u8bcd\u4e4b\u95f4\u7528\u70b9\u53f7\u5206\u9694\u3002<\/p>\n

          \/\/ \u6807\u51c6\u5305\u547d\u540d\u793a\u4f8b<\/span>
          \npackage<\/span> com.<\/span>alibaba.<\/span>druid.<\/span>filter.<\/span>config<\/span>;<\/span> \/\/ \u963f\u91cc\u5df4\u5df4 Druid \u8fde\u63a5\u6c60<\/span>
          \npackage<\/span> org.<\/span>apache.<\/span>commons.<\/span>lang3<\/span>;<\/span> \/\/ Apache Commons \u5de5\u5177\u5e93<\/span>
          \npackage<\/span> java.<\/span>util.<\/span>concurrent<\/span>;<\/span> \/\/ JDK \u5e76\u53d1\u5de5\u5177\u5305<\/span><\/p>\n

          \/\/ \u5e38\u89c1\u7684\u5305\u547d\u540d\u53cd\u4f8b<\/span>
          \npackage<\/span> com.<\/span>example.<\/span><\/span>Util<\/span>;<\/span> \/\/ \u9519\u8bef：\u5305\u540d\u4e0d\u5e94\u5305\u542b\u5927\u5199\u5b57\u6bcd<\/span>
          \npackage<\/span> com.<\/span>example.<\/span>user<\/span>–<\/span>service;<\/span> \/\/ \u9519\u8bef：\u4e0d\u5e94\u4f7f\u7528\u8fde\u5b57\u7b26<\/span>
          \npackage<\/span> com.<\/span>example.<\/span><\/span>123<\/span>util;<\/span> \/\/ \u9519\u8bef：\u4e0d\u5e94\u4ee5\u6570\u5b57\u5f00\u5934<\/span><\/p>\n

          \u5305\u540d\u7684\u5c42\u7ea7\u7ed3\u6784\u5efa\u8bae\u5982\u4e0b：<\/p>\n\n\u5c42\u7ea7\u793a\u4f8b\u8bf4\u660e<\/tr>\n\n\n\n\n\n
          \u516c\u53f8\/\u7ec4\u7ec7\u57df<\/td>\ncom.alibaba<\/td>\n\u53cd\u8f6c\u57df\u540d，\u786e\u4fdd\u5168\u7403\u552f\u4e00\u6027<\/td>\n<\/tr>\n
          \u9879\u76ee\u540d<\/td>\ndruid<\/td>\n\u6807\u8bc6\u6240\u5c5e\u9879\u76ee<\/td>\n<\/tr>\n
          \u6a21\u5757\u540d<\/td>\nfilter<\/td>\n\u6807\u8bc6\u529f\u80fd\u6a21\u5757<\/td>\n<\/tr>\n
          \u5b50\u6a21\u5757（\u53ef\u9009）<\/td>\nconfig<\/td>\n\u8fdb\u4e00\u6b65\u7ec6\u5206<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          4.2 \u7c7b\u4e0e\u63a5\u53e3\u547d\u540d\u89c4\u8303<\/h4>\n

          \u7c7b\u540d\u548c\u63a5\u53e3\u540d\u4f7f\u7528 PascalCase（\u5927\u9a7c\u5cf0\u547d\u540d\u6cd5），\u5373\u6bcf\u4e2a\u5355\u8bcd\u7684\u9996\u5b57\u6bcd\u5927\u5199，\u5176\u4f59\u5b57\u6bcd\u5c0f\u5199\u3002<\/p>\n

          \/\/ \u597d\u7684\u7c7b\u540d\u2014\u2014\u540d\u8bcd\u6216\u540d\u8bcd\u77ed\u8bed，\u51c6\u786e\u63cf\u8ff0\u804c\u8d23<\/span>
          \npublic<\/span> class<\/span> UserService<\/span> {<\/span> }<\/span> \/\/ \u7528\u6237\u670d\u52a1<\/span>
          \npublic<\/span> class<\/span> OrderRepository<\/span> {<\/span> }<\/span> \/\/ \u8ba2\u5355\u6570\u636e\u4ed3\u50a8<\/span>
          \npublic<\/span> class<\/span> HttpRequestParser<\/span> {<\/span> }<\/span> \/\/ HTTP \u8bf7\u6c42\u89e3\u6790\u5668<\/span>
          \npublic<\/span> class<\/span> ThreadPoolExecutor<\/span> {<\/span> }<\/span> \/\/ \u7ebf\u7a0b\u6c60\u6267\u884c\u5668<\/span><\/p>\n

          \/\/ \u63a5\u53e3\u547d\u540d\u2014\u2014\u901a\u5e38\u4ee5 I \u5f00\u5934\u6216\u4f7f\u7528\u5f62\u5bb9\u8bcd\/\u80fd\u529b\u63cf\u8ff0<\/span>
          \npublic<\/span> interface<\/span> Serializable<\/span> {<\/span> }<\/span> \/\/ \u53ef\u5e8f\u5217\u5316\u7684<\/span>
          \npublic<\/span> interface<\/span> Comparable<\/span><<\/span>T<\/span>><\/span><\/span> {<\/span> }<\/span> \/\/ \u53ef\u6bd4\u8f83\u7684<\/span>
          \npublic<\/span> interface<\/span> UserDao<\/span> {<\/span> }<\/span> \/\/ \u6570\u636e\u8bbf\u95ee\u63a5\u53e3<\/span>
          \npublic<\/span> interface<\/span> PaymentStrategy<\/span> {<\/span> }<\/span> \/\/ \u7b56\u7565\u63a5\u53e3<\/span><\/p>\n

          \/\/ \u62bd\u8c61\u7c7b\u2014\u2014\u901a\u5e38\u4ee5 Abstract \u6216 Base \u5f00\u5934<\/span>
          \npublic<\/span> abstract<\/span> class<\/span> AbstractUserService<\/span> {<\/span> }<\/span>
          \npublic<\/span> abstract<\/span> class<\/span> BaseController<\/span> {<\/span> }<\/span><\/p>\n

          \/\/ \u5f02\u5e38\u7c7b\u2014\u2014\u4ee5 Exception \u7ed3\u5c3e<\/span>
          \npublic<\/span> class<\/span> OrderNotFoundException<\/span> extends<\/span> RuntimeException<\/span> {<\/span> }<\/span>
          \npublic<\/span> class<\/span> InsufficientBalanceException<\/span> extends<\/span> Exception<\/span> {<\/span> }<\/span><\/p>\n

          \/\/ \u6d4b\u8bd5\u7c7b\u2014\u2014\u4ee5 Test \u7ed3\u5c3e<\/span>
          \npublic<\/span> class<\/span> UserServiceTest<\/span> {<\/span> }<\/span>
          \npublic<\/span> class<\/span> OrderValidatorIT<\/span> {<\/span> }<\/span> \/\/ \u96c6\u6210\u6d4b\u8bd5<\/span><\/p>\n

          \/\/ \u7cdf\u7cd5\u7684\u7c7b\u540d\u793a\u4f8b\u2014\u2014\u5e94\u907f\u514d<\/span>
          \npublic<\/span> class<\/span> Data<\/span> {<\/span> }<\/span> \/\/ \u592a\u6cdb\u5316，\u4e0d\u77e5\u9053\u662f\u4ec0\u4e48\u6570\u636e<\/span>
          \npublic<\/span> class<\/span> UserInfoManager<\/span> {<\/span> }<\/span> \/\/ Manager \u662f\u6a21\u7cca\u8bcd，\u4e0d\u5982 UserService \u660e\u786e<\/span>
          \npublic<\/span> class<\/span> DoSomething<\/span> {<\/span> }<\/span> \/\/ \u52a8\u8bcd\u77ed\u8bed，\u7c7b\u540d\u5e94\u4e3a\u540d\u8bcd<\/span>
          \npublic<\/span> class<\/span> user_service {<\/span> }<\/span> \/\/ \u4f7f\u7528\u4e86\u86c7\u5f62\u547d\u540d，\u4e0d\u7b26\u5408 Java \u60ef\u4f8b<\/span><\/p>\n

          4.3 \u65b9\u6cd5\u547d\u540d\u89c4\u8303<\/h4>\n

          \u65b9\u6cd5\u540d\u4f7f\u7528 camelCase（\u5c0f\u9a7c\u5cf0\u547d\u540d\u6cd5），\u9996\u5355\u8bcd\u5168\u5c0f\u5199，\u540e\u7eed\u5355\u8bcd\u9996\u5b57\u6bcd\u5927\u5199\u3002\u65b9\u6cd5\u540d\u5e94\u5f53\u662f\u52a8\u8bcd\u6216\u52a8\u8bcd\u77ed\u8bed，\u6e05\u6670\u8868\u8fbe\u6267\u884c\u7684\u64cd\u4f5c\u3002<\/p>\n

          \/\/ \u597d\u7684\u65b9\u6cd5\u540d\u2014\u2014\u52a8\u8bcd\u5f00\u5934，\u542b\u4e49\u6e05\u6670<\/span>
          \npublic<\/span> User<\/span> findById<\/span>(<\/span>Long<\/span> id)<\/span> {<\/span> }<\/span>
          \npublic<\/span> List<\/span><<\/span>Order<\/span>><\/span><\/span> queryByStatus<\/span>(<\/span>OrderStatus<\/span> status)<\/span> {<\/span> }<\/span>
          \npublic<\/span> void<\/span> sendNotification<\/span>(<\/span>Message<\/span> message)<\/span> {<\/span> }<\/span>
          \npublic<\/span> boolean<\/span> validateEmail<\/span>(<\/span>String<\/span> email)<\/span> {<\/span> }<\/span>
          \npublic<\/span> BigDecimal<\/span> calculateTotalPrice<\/span>(<\/span>List<\/span><<\/span>Item<\/span>><\/span><\/span> items)<\/span> {<\/span> }<\/span><\/p>\n

          \/\/ \u5e38\u89c1\u7684\u52a8\u8bcd\u524d\u7f00\u53ca\u5176\u8bed\u4e49<\/span>
          \n\/\/ getXxx() \u2014\u2014 \u83b7\u53d6\u5c5e\u6027\u503c（\u7b80\u5355\u8bbf\u95ee\u5668）<\/span>
          \n\/\/ setXxx() \u2014\u2014 \u8bbe\u7f6e\u5c5e\u6027\u503c（\u7b80\u5355\u4fee\u6539\u5668）<\/span>
          \n\/\/ findXxx() \u2014\u2014 \u67e5\u627e\u5355\u4e2a\u5bf9\u8c61（\u53ef\u80fd\u8fd4\u56de null \u6216 Optional）<\/span>
          \n\/\/ queryXxx() \u2014\u2014 \u67e5\u8be2\u591a\u4e2a\u5bf9\u8c61<\/span>
          \n\/\/ saveXxx() \u2014\u2014 \u4fdd\u5b58\/\u6301\u4e45\u5316\u5bf9\u8c61<\/span>
          \n\/\/ deleteXxx() \u2014\u2014 \u5220\u9664\u5bf9\u8c61<\/span>
          \n\/\/ createXxx() \u2014\u2014 \u521b\u5efa\u65b0\u5bf9\u8c61<\/span>
          \n\/\/ buildXxx() \u2014\u2014 \u6784\u5efa\u590d\u6742\u5bf9\u8c61（Builder \u6a21\u5f0f）<\/span>
          \n\/\/ validateXxx() \u2014\u2014 \u6821\u9a8c\u6570\u636e\u5408\u6cd5\u6027<\/span>
          \n\/\/ processXxx() \u2014\u2014 \u6267\u884c\u67d0\u79cd\u5904\u7406\u6d41\u7a0b<\/span>
          \n\/\/ convertXxx() \u2014\u2014 \u7c7b\u578b\u8f6c\u6362<\/span>
          \n\/\/ toXxx() \u2014\u2014 \u5c06\u5f53\u524d\u5bf9\u8c61\u8f6c\u6362\u4e3a\u53e6\u4e00\u7c7b\u578b<\/span>
          \n\/\/ isXxx() \u2014\u2014 \u5e03\u5c14\u5224\u65ad（\u8fd4\u56de boolean）<\/span>
          \n\/\/ hasXxx() \u2014\u2014 \u5224\u65ad\u662f\u5426\u62e5\u6709\u67d0\u5c5e\u6027（\u8fd4\u56de boolean）<\/span>
          \n\/\/ canXxx() \u2014\u2014 \u5224\u65ad\u662f\u5426\u6709\u80fd\u529b\u6267\u884c\u67d0\u64cd\u4f5c（\u8fd4\u56de boolean）<\/span><\/p>\n

          4.4 \u53d8\u91cf\u547d\u540d\u89c4\u8303<\/h4>\n

          \/\/ \u6210\u5458\u53d8\u91cf\u548c\u5c40\u90e8\u53d8\u91cf\u2014\u2014camelCase<\/span>
          \nprivate<\/span> String<\/span> userName;<\/span>
          \nprivate<\/span> int<\/span> maxRetryCount;<\/span>
          \nprivate<\/span> LocalDateTime<\/span> createTime;<\/span><\/p>\n

          \/\/ \u5e38\u91cf\u2014\u2014UPPER_SNAKE_CASE（\u5168\u5927\u5199，\u5355\u8bcd\u95f4\u7528\u4e0b\u5212\u7ebf\u5206\u9694）<\/span>
          \npublic<\/span> static<\/span> final<\/span> int<\/span> DEFAULT_PAGE_SIZE<\/span> =<\/span> 20<\/span>;<\/span>
          \npublic<\/span> static<\/span> final<\/span> String<\/span> APP_VERSION<\/span> =<\/span> "2.3.1"<\/span>;<\/span>
          \npublic<\/span> static<\/span> final<\/span> long<\/span> MAX_UPLOAD_SIZE_BYTES<\/span> =<\/span> 10<\/span> *<\/span> 1024<\/span> *<\/span> 1024<\/span>;<\/span> \/\/ 10MB<\/span><\/p>\n

          \/\/ \u5e03\u5c14\u53d8\u91cf\u2014\u2014\u4ee5 is\u3001has\u3001can\u3001should \u5f00\u5934<\/span>
          \nprivate<\/span> boolean<\/span> isActive;<\/span>
          \nprivate<\/span> boolean<\/span> hasPermission;<\/span>
          \nprivate<\/span> boolean<\/span> canEdit;<\/span>
          \nprivate<\/span> boolean<\/span> shouldRetry;<\/span><\/p>\n

          \/\/ \u7cdf\u7cd5\u7684\u53d8\u91cf\u540d\u2014\u2014\u5e94\u907f\u514d<\/span>
          \nint<\/span> d;<\/span> \/\/ \u5355\u5b57\u6bcd\u53d8\u91cf\u540d（\u5faa\u73af\u7d22\u5f15 i, j, k \u9664\u5916），\u542b\u4e49\u4e0d\u660e<\/span>
          \nString<\/span> s;<\/span> \/\/ \u540c\u4e0a<\/span>
          \nint<\/span> count,<\/span> cnt,<\/span> cntr;<\/span> \/\/ \u7f29\u5199\u4e0d\u4e00\u81f4，count \u672c\u8eab\u5c31\u662f\u7b80\u6d01\u7684\u597d\u540d\u5b57<\/span>
          \nString<\/span> userNameString;<\/span> \/\/ \u5197\u4f59：userName \u672c\u8eab\u5df2\u7ecf\u8868\u660e\u662f\u5b57\u7b26\u4e32<\/span>
          \nList<\/span><<\/span>String<\/span>><\/span><\/span> list;<\/span> \/\/ \u592a\u6cdb\u5316，\u5e94\u6539\u4e3a userNames \u6216 nameList<\/span><\/p>\n

          4.5 \u547d\u540d\u89c4\u8303\u603b\u7ed3\u5bf9\u7167\u8868<\/h4>\n\n\u5143\u7d20\u547d\u540d\u98ce\u683c\u793a\u4f8b\u5907\u6ce8<\/tr>\n\n\n\n\n\n\n\n\n\n\n\n\n
          \u5305\u540d<\/td>\n\u5168\u5c0f\u5199 + \u70b9\u53f7\u5206\u9694<\/td>\ncom.example.user.service<\/td>\n\u4f7f\u7528\u53cd\u8f6c\u57df\u540d<\/td>\n<\/tr>\n
          \u7c7b\u540d<\/td>\nPascalCase<\/td>\nUserService, OrderDTO<\/td>\n\u540d\u8bcd\/\u540d\u8bcd\u77ed\u8bed<\/td>\n<\/tr>\n
          \u63a5\u53e3\u540d<\/td>\nPascalCase<\/td>\nComparable, PaymentStrategy<\/td>\n\u5f62\u5bb9\u8bcd\u6216\u540d\u8bcd<\/td>\n<\/tr>\n
          \u62bd\u8c61\u7c7b\u540d<\/td>\nAbstract\/Base + PascalCase<\/td>\nAbstractUserService<\/td>\n\u4ee5 Abstract \u6216 Base \u5f00\u5934<\/td>\n<\/tr>\n
          \u65b9\u6cd5\u540d<\/td>\ncamelCase<\/td>\nfindById(), calculateTotal()<\/td>\n\u52a8\u8bcd\/\u52a8\u8bcd\u77ed\u8bed<\/td>\n<\/tr>\n
          \u5e38\u91cf<\/td>\nUPPER_SNAKE_CASE<\/td>\nMAX_RETRY_COUNT<\/td>\nstatic final \u4fee\u9970<\/td>\n<\/tr>\n
          \u6210\u5458\u53d8\u91cf<\/td>\ncamelCase<\/td>\nuserName, orderList<\/td>\n\u540d\u8bcd<\/td>\n<\/tr>\n
          \u5c40\u90e8\u53d8\u91cf<\/td>\ncamelCase<\/td>\nresult, tempUser<\/td>\n\u7b80\u77ed\u8fbe\u610f<\/td>\n<\/tr>\n
          \u679a\u4e3e\u5e38\u91cf<\/td>\nUPPER_SNAKE_CASE<\/td>\nOrderStatus.PENDING<\/td>\n\u4e0e\u5e38\u91cf\u4e00\u81f4<\/td>\n<\/tr>\n
          \u6cdb\u578b\u7c7b\u578b\u53c2\u6570<\/td>\n\u5355\u5927\u5199\u5b57\u6bcd<\/td>\nT, E, K, V<\/td>\nT=Type, E=Element, K=Key, V=Value<\/td>\n<\/tr>\n
          \u6ce8\u89e3\u540d<\/td>\nPascalCase<\/td>\n@Override, @Autowired<\/td>\nJDK\/\u6846\u67b6\u9884\u5b9a\u4e49<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          \n

          \u4e94\u3001\u4ee3\u7801\u683c\u5f0f\u5316\u89c4\u8303<\/h3>\n

          5.1 \u7f29\u8fdb\u98ce\u683c<\/h4>\n

          Java \u793e\u533a\u7684\u5171\u8bc6\u662f\u4f7f\u7528 4 \u4e2a\u7a7a\u683c \u8fdb\u884c\u7f29\u8fdb，\u4e0d\u4f7f\u7528 Tab \u5b57\u7b26\u3002\u8fd9\u786e\u4fdd\u4e86\u4ee3\u7801\u5728\u6240\u6709\u7f16\u8f91\u5668\u548c\u73af\u5883\u4e2d\u663e\u793a\u4e00\u81f4\u3002<\/p>\n

          \/\/ \u63a8\u8350\u7684\u7f29\u8fdb\u65b9\u5f0f\u2014\u20144 \u4e2a\u7a7a\u683c<\/span>
          \npublic<\/span> class<\/span> IndentationExample<\/span> {<\/span><\/p>\n

          public<\/span> void<\/span> process<\/span>(<\/span>)<\/span> {<\/span> \/\/ 1 \u7ea7\u7f29\u8fdb：\u7c7b\u5185\u6210\u5458<\/span>
          \n if<\/span> (<\/span>condition)<\/span> {<\/span> \/\/ 2 \u7ea7\u7f29\u8fdb：\u65b9\u6cd5\u5185\u8bed\u53e5<\/span>
          \n doSomething<\/span>(<\/span>)<\/span>;<\/span> \/\/ 3 \u7ea7\u7f29\u8fdb：\u63a7\u5236\u6d41\u5185<\/span>
          \n if<\/span> (<\/span>anotherCondition)<\/span> {<\/span>
          \n handle<\/span>(<\/span>)<\/span>;<\/span> \/\/ 4 \u7ea7\u7f29\u8fdb：\u5d4c\u5957\u63a7\u5236\u6d41<\/span>
          \n }<\/span>
          \n }<\/span>
          \n }<\/span>
          \n}<\/span><\/p>\n

          5.2 \u5927\u62ec\u53f7\u98ce\u683c<\/h4>\n

          Java \u793e\u533a\u6700\u5e7f\u6cdb\u91c7\u7528\u7684\u5927\u62ec\u53f7\u98ce\u683c\u662f K&R \u98ce\u683c（Kernighan and Ritchie Style），\u5373\u5de6\u5927\u62ec\u53f7\u4f4d\u4e8e\u884c\u5c3e，\u53f3\u5927\u62ec\u53f7\u72ec\u5360\u4e00\u884c\u3002\u8fd9\u662f Oracle \u5b98\u65b9 Java \u7f16\u7801\u89c4\u8303\u63a8\u8350\u7684\u98ce\u683c，\u4e5f\u662f Eclipse \u548c IntelliJ IDEA \u7684\u9ed8\u8ba4\u8bbe\u7f6e\u3002<\/p>\n

          \/\/ K&R \u98ce\u683c（\u63a8\u8350）\u2014\u2014\u5de6\u62ec\u53f7\u5728\u884c\u5c3e<\/span>
          \npublic<\/span> class<\/span> BraceStyleExample<\/span> {<\/span>
          \n public<\/span> void<\/span> process<\/span>(<\/span>)<\/span> {<\/span>
          \n if<\/span> (<\/span>condition)<\/span> {<\/span>
          \n doSomething<\/span>(<\/span>)<\/span>;<\/span>
          \n }<\/span> else<\/span> {<\/span>
          \n doOtherthing<\/span>(<\/span>)<\/span>;<\/span>
          \n }<\/span><\/p>\n

          for<\/span> (<\/span>int<\/span> i =<\/span> 0<\/span>;<\/span> i <<\/span> 10<\/span>;<\/span> i++<\/span>)<\/span> {<\/span>
          \n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>i)<\/span>;<\/span>
          \n }<\/span>
          \n }<\/span>
          \n}<\/span><\/p>\n

          \/\/ Allman \u98ce\u683c（\u4e0d\u63a8\u8350\u7528\u4e8e Java）\u2014\u2014\u5de6\u62ec\u53f7\u72ec\u5360\u4e00\u884c<\/span>
          \npublic<\/span> class<\/span> AllmanStyleExample<\/span>
          \n{<\/span>
          \n public<\/span> void<\/span> process<\/span>(<\/span>)<\/span>
          \n {<\/span>
          \n if<\/span> (<\/span>condition)<\/span>
          \n {<\/span>
          \n doSomething<\/span>(<\/span>)<\/span>;<\/span>
          \n }<\/span>
          \n }<\/span>
          \n}<\/span><\/p>\n

          \u4e3a\u4ec0\u4e48 Java \u793e\u533a\u9009\u62e9 K&R \u98ce\u683c？ \u539f\u56e0\u6709\u4e09：\u5176\u4e00，K&R \u98ce\u683c\u51cf\u5c11\u4e86\u4ee3\u7801\u7684\u884c\u6570，\u4f7f\u5f97\u66f4\u591a\u903b\u8f91\u80fd\u591f\u5728\u540c\u4e00\u5c4f\u5e55\u5185\u5c55\u793a；\u5176\u4e8c，Java \u6807\u51c6\u5e93（JDK \u6e90\u7801）\u5168\u90e8\u91c7\u7528 K&R \u98ce\u683c，\u793e\u533a\u5f62\u6210\u4e86\u8def\u5f84\u4f9d\u8d56；\u5176\u4e09，Java \u4e0d\u652f\u6301\u5728\u4efb\u610f\u4f4d\u7f6e\u5b9a\u4e49\u51fd\u6570，Allman \u98ce\u683c\u5728 C# \u7b49\u5176\u4ed6\u8bed\u8a00\u4e2d\u7684\u4f18\u52bf\u5728 Java \u4e2d\u4e0d\u9002\u7528\u3002<\/p>\n

          5.3 \u6bcf\u884c\u4ee3\u7801\u957f\u5ea6<\/h4>\n

          \u5efa\u8bae\u6bcf\u884c\u4ee3\u7801\u4e0d\u8d85\u8fc7 120 \u4e2a\u5b57\u7b26\u3002\u8fc7\u957f\u7684\u4ee3\u7801\u884c\u4f1a\u964d\u4f4e\u53ef\u8bfb\u6027，\u5728 Code Review \u7684\u5e76\u6392\u5bf9\u6bd4\u89c6\u56fe\u4e2d\u5c24\u5176\u660e\u663e\u3002<\/p>\n

          \/\/ \u8fc7\u957f\u7684\u4ee3\u7801\u884c（\u8d85\u8fc7 120 \u5b57\u7b26）\u2014\u2014\u96be\u4ee5\u9605\u8bfb<\/span>
          \npublic<\/span> SettlementResult<\/span> calculateOrderSettlement<\/span>(<\/span>Order<\/span> order,<\/span> List<\/span><<\/span>Long<\/span>><\/span><\/span> couponIds,<\/span> DiscountConfig<\/span> discountConfig,<\/span> TaxRateProvider<\/span> taxRateProvider)<\/span> {<\/span><\/p>\n

          \/\/ \u9002\u5f53\u7684\u6362\u884c\u2014\u2014\u6bcf\u4e2a\u53c2\u6570\u72ec\u5360\u4e00\u884c，\u5bf9\u9f50\u6e05\u6670<\/span>
          \npublic<\/span> SettlementResult<\/span> calculateOrderSettlement<\/span>(<\/span>
          \n Order<\/span> order,<\/span>
          \n List<\/span><<\/span>Long<\/span>><\/span><\/span> couponIds,<\/span>
          \n DiscountConfig<\/span> discountConfig,<\/span>
          \n TaxRateProvider<\/span> taxRateProvider)<\/span> {<\/span><\/p>\n

          \/\/ \u94fe\u5f0f\u8c03\u7528\u6362\u884c\u2014\u2014\u5c06\u6bcf\u4e2a\u65b9\u6cd5\u8c03\u7528\u653e\u5728\u65b0\u884c<\/span>
          \nString<\/span> result =<\/span> builder
          \n .<\/span>addField<\/span>(<\/span>"userName"<\/span>,<\/span> userName)<\/span>
          \n .<\/span>addField<\/span>(<\/span>"userAge"<\/span>,<\/span> userAge)<\/span>
          \n .<\/span>addField<\/span>(<\/span>"createTime"<\/span>,<\/span> createTime)<\/span>
          \n .<\/span>build<\/span>(<\/span>)<\/span>
          \n .<\/span>toJson<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

          5.4 \u7a7a\u767d\u4e0e\u7a7a\u683c\u7684\u4f7f\u7528<\/h4>\n

          \/\/ \u6b63\u786e\u7684\u7a7a\u683c\u4f7f\u7528\u793a\u4f8b<\/span>
          \npublic<\/span> class<\/span> WhitespaceExample<\/span> {<\/span><\/p>\n

          \/\/ \u5173\u952e\u5b57\u4e0e\u62ec\u53f7\u4e4b\u95f4\u52a0\u7a7a\u683c<\/span>
          \n if<\/span> (<\/span>condition)<\/span> {<\/span> }<\/span> \/\/ \u221a<\/span>
          \n for<\/span> (<\/span>int<\/span> i =<\/span> 0<\/span>;<\/span> i <<\/span> n;<\/span> i++<\/span>)<\/span> {<\/span> }<\/span> \/\/ \u221a<\/span>
          \n while<\/span> (<\/span>isRunning)<\/span> {<\/span> }<\/span> \/\/ \u221a<\/span>
          \n try<\/span> (<\/span>Resource<\/span> r =<\/span> open<\/span>(<\/span>)<\/span>)<\/span> {<\/span> }<\/span> \/\/ \u221a<\/span>
          \n catch<\/span> (<\/span>Exception<\/span> e)<\/span> {<\/span> }<\/span> \/\/ \u221a<\/span><\/p>\n

          \/\/ \u4e8c\u5143\u8fd0\u7b97\u7b26\u4e24\u4fa7\u52a0\u7a7a\u683c<\/span>
          \n int<\/span> result =<\/span> a +<\/span> b *<\/span> c;<\/span> \/\/ \u221a<\/span>
          \n boolean<\/span> flag =<\/span> x ><\/span> 0<\/span> &&<\/span> y <<\/span> 10<\/span>;<\/span> \/\/ \u221a<\/span><\/p>\n

          \/\/ \u9017\u53f7\u540e\u9762\u52a0\u7a7a\u683c<\/span>
          \n method<\/span>(<\/span>a,<\/span> b,<\/span> c)<\/span>;<\/span> \/\/ \u221a<\/span>
          \n Map<\/span><<\/span>String<\/span>,<\/span> Integer<\/span>><\/span><\/span> map;<\/span> \/\/ \u221a<\/span>
          \n List<\/span><<\/span>Integer<\/span>><\/span><\/span> list =<\/span> Arrays<\/span>.<\/span>asList<\/span>(<\/span>1<\/span>,<\/span> 2<\/span>,<\/span> 3<\/span>)<\/span>;<\/span> \/\/ \u221a<\/span><\/p>\n

          \/\/ \u65b9\u6cd5\u540d\u4e0e\u62ec\u53f7\u4e4b\u95f4\u4e0d\u52a0\u7a7a\u683c<\/span>
          \n doSomething<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u221a<\/span>
          \n calculate<\/span>(<\/span>a,<\/span> b)<\/span>;<\/span> \/\/ \u221a<\/span>
          \n}<\/span><\/p>\n

          5.5 import \u8bed\u53e5\u89c4\u8303<\/h4>\n

          \/\/ \u597d\u7684 import \u7ec4\u7ec7\u65b9\u5f0f<\/span>
          \n\/\/ 1. \u9759\u6001\u5bfc\u5165\u653e\u5728\u6700\u524d\u9762<\/span>
          \nimport<\/span> static<\/span> org.<\/span>junit.<\/span><\/span>Assert<\/span>.<\/span>assertEquals<\/span><\/span>;<\/span>
          \nimport<\/span> static<\/span> org.<\/span>junit.<\/span><\/span>Assert<\/span>.<\/span>assertNotNull<\/span><\/span>;<\/span><\/p>\n

          \/\/ 2. JDK \u6838\u5fc3\u5e93<\/span>
          \nimport<\/span> java.<\/span>time.<\/span><\/span>LocalDateTime<\/span><\/span>;<\/span>
          \nimport<\/span> java.<\/span>util.<\/span><\/span>ArrayList<\/span><\/span>;<\/span>
          \nimport<\/span> java.<\/span>util.<\/span><\/span>List<\/span><\/span>;<\/span>
          \nimport<\/span> java.<\/span>util.<\/span><\/span>Map<\/span><\/span>;<\/span><\/p>\n

          \/\/ 3. \u7b2c\u4e09\u65b9\u5e93<\/span>
          \nimport<\/span> org.<\/span>apache.<\/span>commons.<\/span>lang3.<\/span><\/span>StringUtils<\/span><\/span>;<\/span>
          \nimport<\/span> org.<\/span>springframework.<\/span>stereotype.<\/span><\/span>Service<\/span><\/span>;<\/span><\/p>\n

          \/\/ 4. \u9879\u76ee\u5185\u90e8\u5305<\/span>
          \nimport<\/span> com.<\/span>example.<\/span>user.<\/span>model.<\/span><\/span>User<\/span><\/span>;<\/span>
          \nimport<\/span> com.<\/span>example.<\/span>user.<\/span>service.<\/span><\/span>UserService<\/span><\/span>;<\/span><\/p>\n

          \/\/ \u7981\u6b62\u4f7f\u7528\u901a\u914d\u7b26\u5bfc\u5165\u2014\u2014\u4f1a\u5f15\u5165\u4e0d\u9700\u8981\u7684\u7c7b\u5e76\u964d\u4f4e\u7f16\u8bd1\u901f\u5ea6<\/span>
          \n\/\/ \u5dee：<\/span>
          \nimport<\/span> java.<\/span>util.<\/span><\/span>*<\/span><\/span>;<\/span>
          \n\/\/ \u597d：<\/span>
          \nimport<\/span> java.<\/span>util.<\/span><\/span>List<\/span><\/span>;<\/span>
          \nimport<\/span> java.<\/span>util.<\/span><\/span>Map<\/span><\/span>;<\/span><\/p>\n

          \n

          \u516d\u3001\u963f\u91cc\u5df4\u5df4 Java \u5f00\u53d1\u624b\u518c\u6838\u5fc3\u8981\u70b9<\/h3>\n

          2017 \u5e74，\u963f\u91cc\u5df4\u5df4\u5f00\u6e90\u4e86\u300aJava \u5f00\u53d1\u624b\u518c\u300b（\u73b0\u5df2\u66f4\u540d\u4e3a\u300aJava \u5f00\u53d1\u624b\u518c（\u9ec4\u5c71\u7248）\u300b），\u8fd9\u662f\u4e2d\u56fd Java \u5f00\u53d1\u8005\u793e\u533a\u6700\u5177\u5f71\u54cd\u529b\u7684\u7f16\u7801\u89c4\u8303\u6587\u6863\u4e4b\u4e00\u3002\u5176\u914d\u5957\u5de5\u5177 P3C（\u5305\u62ec IDEA \u63d2\u4ef6\u548c GitHub Actions \u96c6\u6210）\u80fd\u591f\u5bf9\u4ee3\u7801\u8fdb\u884c\u81ea\u52a8\u5316\u89c4\u8303\u626b\u63cf\u3002<\/p>\n

          \u4ee5\u4e0b\u662f\u4ece\u4e2d\u63d0\u70bc\u7684\u51e0\u4e2a\u6838\u5fc3\u89c4\u5219：<\/p>\n

          6.1 \u547d\u540d\u98ce\u683c<\/h4>\n

          \/\/ \u3010\u5f3a\u5236\u3011POJO \u7c7b\u4e2d\u5e03\u5c14\u7c7b\u578b\u7684\u53d8\u91cf，\u90fd\u4e0d\u8981\u52a0 is \u524d\u7f00<\/span>
          \n\/\/ \u5426\u5219\u90e8\u5206\u6846\u67b6\u89e3\u6790\u4f1a\u5f15\u8d77\u5e8f\u5217\u5316\u9519\u8bef<\/span>
          \n\/\/ \u6b63\u786e：<\/span>
          \nprivate<\/span> boolean<\/span> deleted;<\/span>
          \nprivate<\/span> boolean<\/span> active;<\/span>
          \n\/\/ \u9519\u8bef：<\/span>
          \nprivate<\/span> boolean<\/span> isDeleted;<\/span>
          \nprivate<\/span> boolean<\/span> isActive;<\/span><\/p>\n

          \/\/ \u3010\u5f3a\u5236\u3011Service\/DAO \u5c42\u65b9\u6cd5\u547d\u540d\u89c4\u7ea6<\/span>
          \n\/\/ \u83b7\u53d6\u5355\u4e2a\u5bf9\u8c61\u7684\u65b9\u6cd5\u7528 get \u505a\u524d\u7f00<\/span>
          \n\/\/ \u83b7\u53d6\u591a\u4e2a\u5bf9\u8c61\u7684\u65b9\u6cd5\u7528 list \u505a\u524d\u7f00<\/span>
          \n\/\/ \u83b7\u53d6\u7edf\u8ba1\u503c\u7684\u65b9\u6cd5\u7528 count \u505a\u524d\u7f00<\/span>
          \n\/\/ \u63d2\u5165\u7684\u65b9\u6cd5\u7528 save\/insert \u505a\u524d\u7f00<\/span>
          \n\/\/ \u5220\u9664\u7684\u65b9\u6cd5\u7528 remove\/delete \u505a\u524d\u7f00<\/span>
          \n\/\/ \u4fee\u6539\u7684\u65b9\u6cd5\u7528 update \u505a\u524d\u7f00<\/span><\/p>\n

          public<\/span> interface<\/span> UserDao<\/span> {<\/span>
          \n User<\/span> getById<\/span>(<\/span>Long<\/span> id)<\/span>;<\/span>
          \n List<\/span><<\/span>User<\/span>><\/span><\/span> listByCondition<\/span>(<\/span>UserQuery<\/span> query)<\/span>;<\/span>
          \n int<\/span> countByStatus<\/span>(<\/span>UserStatus<\/span> status)<\/span>;<\/span>
          \n int<\/span> save<\/span>(<\/span>User<\/span> user)<\/span>;<\/span>
          \n int<\/span> update<\/span>(<\/span>User<\/span> user)<\/span>;<\/span>
          \n int<\/span> removeById<\/span>(<\/span>Long<\/span> id)<\/span>;<\/span>
          \n}<\/span><\/p>\n

          6.2 \u5e38\u91cf\u5b9a\u4e49<\/h4>\n

          \/\/ \u3010\u5f3a\u5236\u3011\u4e0d\u5141\u8bb8\u4efb\u4f55\u9b54\u6cd5\u503c\u76f4\u63a5\u51fa\u73b0\u5728\u4ee3\u7801\u4e2d<\/span>
          \n\/\/ \u9519\u8bef：<\/span>
          \nif<\/span> (<\/span>"SUCCESS"<\/span>.<\/span>equals<\/span>(<\/span>result.<\/span>getStatus<\/span>(<\/span>)<\/span>)<\/span>)<\/span> {<\/span> }<\/span>
          \n\/\/ \u6b63\u786e：<\/span>
          \nprivate<\/span> static<\/span> final<\/span> String<\/span> SUCCESS_STATUS<\/span> =<\/span> "SUCCESS"<\/span>;<\/span>
          \nif<\/span> (<\/span>SUCCESS_STATUS<\/span>.<\/span>equals<\/span>(<\/span>result.<\/span>getStatus<\/span>(<\/span>)<\/span>)<\/span>)<\/span> {<\/span> }<\/span><\/p>\n

          \/\/ \u3010\u5f3a\u5236\u3011long \u578b\u5e38\u91cf\u8d4b\u503c\u65f6\u4f7f\u7528\u5927\u5199 L，\u4e0d\u80fd\u7528\u5c0f\u5199 l<\/span>
          \n\/\/ \u5c0f\u5199 l \u5bb9\u6613\u4e0e\u6570\u5b57 1 \u6df7\u6dc6<\/span>
          \nlong<\/span> maxSize =<\/span> 100L<\/span>;<\/span> \/\/ \u6b63\u786e<\/span>
          \nlong<\/span> maxSize =<\/span> 100l<\/span>;<\/span> \/\/ \u9519\u8bef\u2014\u2014\u770b\u8d77\u6765\u50cf 1001<\/span><\/p>\n

          6.3 \u4ee3\u7801\u683c\u5f0f<\/h4>\n

          \/\/ \u3010\u5f3a\u5236\u3011if\/for\/while \u7b49\u8bed\u53e5\u5fc5\u987b\u4f7f\u7528\u5927\u62ec\u53f7<\/span>
          \n\/\/ \u5373\u4f7f\u53ea\u6709\u4e00\u884c\u4ee3\u7801，\u4e5f\u4e0d\u5f97\u7701\u7565\u2014\u2014\u9632\u6b62\u540e\u7eed\u6dfb\u52a0\u4ee3\u7801\u65f6\u4ea7\u751f\u903b\u8f91\u9519\u8bef<\/span>
          \n\/\/ \u9519\u8bef：<\/span>
          \nif<\/span> (<\/span>condition)<\/span>
          \n doSomething<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

          \/\/ \u6b63\u786e：<\/span>
          \nif<\/span> (<\/span>condition)<\/span> {<\/span>
          \n doSomething<\/span>(<\/span>)<\/span>;<\/span>
          \n}<\/span><\/p>\n

          \/\/ \u3010\u63a8\u8350\u3011\u4e0d\u540c\u903b\u8f91\u3001\u4e0d\u540c\u8bed\u4e49\u3001\u4e0d\u540c\u4e1a\u52a1\u7684\u4ee3\u7801\u4e4b\u95f4\u63d2\u5165\u4e00\u4e2a\u7a7a\u884c\u5206\u9694<\/span>
          \n\/\/ \u589e\u52a0\u53ef\u8bfb\u6027<\/span>
          \npublic<\/span> void<\/span> process<\/span>(<\/span>)<\/span> {<\/span>
          \n \/\/ \u7b2c\u4e00\u6b65：\u53c2\u6570\u6821\u9a8c<\/span>
          \n validateInput<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

          \/\/ \u7b2c\u4e8c\u6b65：\u4e1a\u52a1\u5904\u7406<\/span>
          \n OrderResult<\/span> result =<\/span> doBusinessLogic<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

          \/\/ \u7b2c\u4e09\u6b65：\u901a\u77e5\u4e0b\u6e38<\/span>
          \n notifyDownstream<\/span>(<\/span>result)<\/span>;<\/span>
          \n}<\/span><\/p>\n

          6.4 \u6ce8\u91ca\u89c4\u7ea6<\/h4>\n

          \/\/ \u3010\u5f3a\u5236\u3011\u7c7b\u3001\u7c7b\u5c5e\u6027\u3001\u7c7b\u65b9\u6cd5\u7684\u6ce8\u91ca\u5fc5\u987b\u4f7f\u7528 Javadoc \u89c4\u8303<\/span>
          \n\/\/ \u4f7f\u7528 \/** \u5185\u5bb9 *\/ \u683c\u5f0f，\u4e0d\u5f97\u4f7f\u7528 \/\/ \u65b9\u5f0f<\/span><\/p>\n

          \/\/ \u3010\u5f3a\u5236\u3011\u6240\u6709\u7684\u62bd\u8c61\u65b9\u6cd5（\u5305\u62ec\u63a5\u53e3\u4e2d\u7684\u65b9\u6cd5）\u5fc5\u987b\u7528 Javadoc \u6ce8\u91ca<\/span>
          \n\/\/ \u9664\u4e86\u8fd4\u56de\u503c\u3001\u53c2\u6570\u3001\u5f02\u5e38\u8bf4\u660e\u5916，\u8fd8\u5fc5\u987b\u6307\u51fa\u8be5\u65b9\u6cd5\u505a\u4ec0\u4e48\u4e8b\u60c5，\u5b9e\u73b0\u4ec0\u4e48\u529f\u80fd<\/span><\/p>\n

          \/\/ \u3010\u5f3a\u5236\u3011\u6240\u6709\u679a\u4e3e\u7c7b\u578b\u5b57\u6bb5\u5fc5\u987b\u8981\u6709\u6ce8\u91ca，\u8bf4\u660e\u6bcf\u4e2a\u6570\u636e\u9879\u7684\u7528\u9014<\/span><\/p>\n

          \/**
          \n * \u8ba2\u5355\u72b6\u6001\u679a\u4e3e\u3002
          \n *\/<\/span>
          \npublic<\/span> enum<\/span> OrderStatus<\/span> {<\/span>
          \n \/** \u5f85\u652f\u4ed8\u2014\u2014\u7528\u6237\u5df2\u4e0b\u5355\u4f46\u5c1a\u672a\u4ed8\u6b3e *\/<\/span>
          \n PENDING<\/span>,<\/span>
          \n \/** \u5df2\u652f\u4ed8\u2014\u2014\u7528\u6237\u5df2\u5b8c\u6210\u4ed8\u6b3e，\u7b49\u5f85\u5546\u5bb6\u786e\u8ba4 *\/<\/span>
          \n PAID<\/span>,<\/span>
          \n \/** \u5df2\u53d1\u8d27\u2014\u2014\u5546\u5bb6\u5df2\u53d1\u8d27，\u5546\u54c1\u5728\u8fd0\u8f93\u9014\u4e2d *\/<\/span>
          \n SHIPPED<\/span>,<\/span>
          \n \/** \u5df2\u5b8c\u6210\u2014\u2014\u7528\u6237\u5df2\u786e\u8ba4\u6536\u8d27 *\/<\/span>
          \n COMPLETED<\/span>,<\/span>
          \n \/** \u5df2\u53d6\u6d88\u2014\u2014\u8ba2\u5355\u5df2\u53d6\u6d88（\u542b\u7cfb\u7edf\u81ea\u52a8\u53d6\u6d88\u548c\u7528\u6237\u4e3b\u52a8\u53d6\u6d88） *\/<\/span>
          \n CANCELLED<\/span>
          \n}<\/span><\/p>\n

          \n

          \u4e03\u3001Clean Code \u539f\u5219\u5728 Java \u4e2d\u7684\u5e94\u7528<\/h3>\n

          Robert C. Martin（Uncle Bob）\u5728\u300a\u4ee3\u7801\u6574\u6d01\u4e4b\u9053\u300b（Clean Code）\u4e00\u4e66\u4e2d\u63d0\u51fa\u4e86\u4e00\u7cfb\u5217\u5f71\u54cd\u6df1\u8fdc\u7684\u7f16\u7a0b\u7406\u5ff5\u3002\u4ee5\u4e0b\u662f\u5c06\u8fd9\u4e9b\u7406\u5ff5\u5e94\u7528\u4e8e Java \u5f00\u53d1\u7684\u51e0\u4e2a\u5173\u952e\u65b9\u9762\u3002<\/p>\n

          7.1 \u51fd\u6570\u5e94\u8be5\u77ed\u5c0f\u7cbe\u608d<\/h4>\n

          \u4e00\u4e2a\u51fd\u6570\u5e94\u8be5\u53ea\u505a\u4e00\u4ef6\u4e8b，\u5e76\u4e14\u628a\u8fd9\u4ef6\u4e8b\u505a\u597d\u3002\u4f5c\u4e3a\u7ecf\u9a8c\u6cd5\u5219，\u4e00\u4e2a\u51fd\u6570\u7684\u7406\u60f3\u957f\u5ea6\u4e0d\u5e94\u8d85\u8fc7 30 \u884c（\u4e0d\u5305\u542b\u6ce8\u91ca\u548c\u7a7a\u884c）\u3002\u5982\u679c\u4e00\u4e2a\u51fd\u6570\u8d85\u8fc7\u4e86\u8fd9\u4e2a\u957f\u5ea6，\u5c31\u5e94\u8be5\u8003\u8651\u662f\u5426\u627f\u62c5\u4e86\u8fc7\u591a\u7684\u804c\u8d23\u3002<\/p>\n

          \/\/ \u5dee：\u4e00\u4e2a\u51fd\u6570\u505a\u4e86\u592a\u591a\u4e8b\u60c5（\u8d85\u8fc7 80 \u884c）<\/span>
          \npublic<\/span> void<\/span> processOrder<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span>
          \n \/\/ \u53c2\u6570\u6821\u9a8c（20 \u884c）<\/span>
          \n \/\/ \u5e93\u5b58\u68c0\u67e5（15 \u884c）<\/span>
          \n \/\/ \u4ef7\u683c\u8ba1\u7b97（20 \u884c）<\/span>
          \n \/\/ \u652f\u4ed8\u5904\u7406（20 \u884c）<\/span>
          \n \/\/ \u901a\u77e5\u53d1\u9001（15 \u884c）<\/span>
          \n}<\/span><\/p>\n

          \/\/ \u597d：\u6bcf\u4e2a\u51fd\u6570\u804c\u8d23\u5355\u4e00<\/span>
          \npublic<\/span> void<\/span> processOrder<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span>
          \n validateOrder<\/span>(<\/span>order)<\/span>;<\/span>
          \n checkInventory<\/span>(<\/span>order)<\/span>;<\/span>
          \n calculatePrice<\/span>(<\/span>order)<\/span>;<\/span>
          \n processPayment<\/span>(<\/span>order)<\/span>;<\/span>
          \n sendNotification<\/span>(<\/span>order)<\/span>;<\/span>
          \n}<\/span><\/p>\n

          private<\/span> void<\/span> validateOrder<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span> \/* … *\/<\/span> }<\/span>
          \nprivate<\/span> void<\/span> checkInventory<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span> \/* … *\/<\/span> }<\/span>
          \nprivate<\/span> void<\/span> calculatePrice<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span> \/* … *\/<\/span> }<\/span>
          \nprivate<\/span> void<\/span> processPayment<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span> \/* … *\/<\/span> }<\/span>
          \nprivate<\/span> void<\/span> sendNotification<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span> \/* … *\/<\/span> }<\/span><\/p>\n

          7.2 \u4f7f\u7528\u6709\u610f\u4e49\u7684\u547d\u540d<\/h4>\n

          \u547d\u540d\u7684\u957f\u5ea6\u5e94\u4e0e\u4f5c\u7528\u57df\u6210\u6b63\u6bd4：\u4f5c\u7528\u57df\u8d8a\u5927，\u540d\u79f0\u5e94\u8d8a\u8be6\u7ec6；\u4f5c\u7528\u57df\u8d8a\u5c0f，\u540d\u79f0\u53ef\u4ee5\u8d8a\u7b80\u6d01\u3002<\/p>\n

          \/\/ \u5dee：\u53d8\u91cf\u540d\u8fc7\u4e8e\u7b80\u77ed，\u4f5c\u7528\u57df\u5374\u5f88\u5927<\/span>
          \npublic<\/span> class<\/span> ReportGenerator<\/span> {<\/span>
          \n private<\/span> List<\/span><<\/span>Map<\/span><<\/span>String<\/span>,<\/span> Object<\/span>><\/span>><\/span><\/span> d;<\/span> \/\/ d \u662f\u4ec0\u4e48？data? details?<\/span><\/p>\n

          public<\/span> void<\/span> gen<\/span>(<\/span>int<\/span> t)<\/span> {<\/span> \/\/ t \u662f\u4ec0\u4e48？type? template?<\/span>
          \n for<\/span> (<\/span>Map<\/span><<\/span>String<\/span>,<\/span> Object<\/span>><\/span><\/span> m :<\/span> d)<\/span> {<\/span> \/\/ m \u662f\u4ec0\u4e48？<\/span>
          \n \/\/ …<\/span>
          \n }<\/span>
          \n }<\/span>
          \n}<\/span><\/p>\n

          \/\/ \u597d：\u540d\u79f0\u63ed\u793a\u4e86\u610f\u56fe<\/span>
          \npublic<\/span> class<\/span> ReportGenerator<\/span> {<\/span>
          \n private<\/span> List<\/span><<\/span>Map<\/span><<\/span>String<\/span>,<\/span> Object<\/span>><\/span>><\/span><\/span> reportDataList;<\/span><\/p>\n

          public<\/span> void<\/span> generateReport<\/span>(<\/span>int<\/span> reportType)<\/span> {<\/span>
          \n for<\/span> (<\/span>Map<\/span><<\/span>String<\/span>,<\/span> Object<\/span>><\/span><\/span> rowData :<\/span> reportDataList)<\/span> {<\/span>
          \n \/\/ …<\/span>
          \n }<\/span>
          \n }<\/span>
          \n}<\/span><\/p>\n

          7.3 \u51fd\u6570\u7684\u53c2\u6570\u4e0d\u5b9c\u8fc7\u591a<\/h4>\n

          \u7406\u60f3\u60c5\u51b5\u4e0b，\u51fd\u6570\u53c2\u6570\u4e0d\u5e94\u8d85\u8fc7 3 \u4e2a\u3002\u8fc7\u591a\u7684\u53c2\u6570\u4f1a\u5bfc\u81f4\u8c03\u7528\u65f6\u5bb9\u6613\u51fa\u9519，\u4e5f\u4f7f\u6d4b\u8bd5\u53d8\u5f97\u590d\u6742\u3002<\/p>\n

          \/\/ \u5dee：\u53c2\u6570\u8fc7\u591a，\u8c03\u7528\u65f6\u5bb9\u6613\u641e\u9519\u987a\u5e8f<\/span>
          \npublic<\/span> User<\/span> createUser<\/span>(<\/span>String<\/span> name,<\/span> String<\/span> email,<\/span> String<\/span> phone,<\/span>
          \n String<\/span> address,<\/span> int<\/span> age,<\/span> String<\/span> gender,<\/span>
          \n String<\/span> department,<\/span> String<\/span> position)<\/span> {<\/span>
          \n \/\/ …<\/span>
          \n}<\/span><\/p>\n

          \/\/ \u597d：\u4f7f\u7528\u53c2\u6570\u5bf9\u8c61\u5c01\u88c5<\/span>
          \npublic<\/span> User<\/span> createUser<\/span>(<\/span>CreateUserRequest<\/span> request)<\/span> {<\/span>
          \n \/\/ …<\/span>
          \n}<\/span><\/p>\n

          \/\/ \u6216\u4f7f\u7528 Builder \u6a21\u5f0f<\/span>
          \nUser<\/span> user =<\/span> User<\/span>.<\/span>builder<\/span>(<\/span>)<\/span>
          \n .<\/span>name<\/span>(<\/span>"\u5f20\u4e09"<\/span>)<\/span>
          \n .<\/span>email<\/span>(<\/span>"zhangsan@example.com"<\/span>)<\/span>
          \n .<\/span>phone<\/span>(<\/span>"13800138000"<\/span>)<\/span>
          \n .<\/span>age<\/span>(<\/span>25<\/span>)<\/span>
          \n .<\/span>build<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

          7.4 \u907f\u514d\u526f\u4f5c\u7528<\/h4>\n

          \u4e00\u4e2a\u51fd\u6570\u5982\u679c\u65e2\u4fee\u6539\u4e86\u5bf9\u8c61\u72b6\u6001，\u53c8\u8fd4\u56de\u4e86\u8ba1\u7b97\u7ed3\u679c，\u5f80\u5f80\u4f1a\u5728\u4e0d\u7ecf\u610f\u95f4\u5f15\u5165\u96be\u4ee5\u6392\u67e5\u7684 Bug\u3002<\/p>\n

          \/\/ \u5dee：\u65b9\u6cd5\u6709\u526f\u4f5c\u7528\u2014\u2014\u65e2\u4fee\u6539\u4e86 order \u72b6\u6001，\u53c8\u8fd4\u56de\u4e86\u7ed3\u679c<\/span>
          \npublic<\/span> SettlementResult<\/span> settle<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span>
          \n order.<\/span>setStatus<\/span>(<\/span>OrderStatus<\/span>.<\/span>PROCESSING<\/span>)<\/span>;<\/span> \/\/ \u526f\u4f5c\u7528：\u4fee\u6539\u4e86\u5165\u53c2<\/span>
          \n return<\/span> new<\/span> SettlementResult<\/span>(<\/span>order)<\/span>;<\/span>
          \n}<\/span><\/p>\n

          \/\/ \u597d：\u547d\u4ee4\u4e0e\u67e5\u8be2\u5206\u79bb<\/span>
          \n\/\/ \u65b9\u5f0f\u4e00：\u53ea\u4fee\u6539\u72b6\u6001（\u547d\u4ee4）<\/span>
          \npublic<\/span> void<\/span> markAsProcessing<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span>
          \n order.<\/span>setStatus<\/span>(<\/span>OrderStatus<\/span>.<\/span>PROCESSING<\/span>)<\/span>;<\/span>
          \n}<\/span>
          \n\/\/ \u65b9\u5f0f\u4e8c：\u53ea\u8fd4\u56de\u7ed3\u679c（\u67e5\u8be2）<\/span>
          \npublic<\/span> SettlementResult<\/span> calculateSettlement<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span>
          \n return<\/span> new<\/span> SettlementResult<\/span>(<\/span>order)<\/span>;<\/span>
          \n}<\/span><\/p>\n

          7.5 \u4f18\u5148\u4f7f\u7528\u5f02\u5e38\u800c\u975e\u8fd4\u56de\u9519\u8bef\u7801<\/h4>\n

          \/\/ \u5dee：\u4f7f\u7528\u9519\u8bef\u7801<\/span>
          \npublic<\/span> int<\/span> withdraw<\/span>(<\/span>String<\/span> accountId,<\/span> BigDecimal<\/span> amount)<\/span> {<\/span>
          \n if<\/span> (<\/span>amount.<\/span>compareTo<\/span>(<\/span>BigDecimal<\/span>.<\/span>ZERO<\/span>)<\/span> <=<\/span> 0<\/span>)<\/span> {<\/span>
          \n return<\/span> –<\/span>1<\/span>;<\/span> \/\/ -1 \u8868\u793a\u91d1\u989d\u65e0\u6548<\/span>
          \n }<\/span>
          \n if<\/span> (<\/span>balance.<\/span>compareTo<\/span>(<\/span>amount)<\/span> <<\/span> 0<\/span>)<\/span> {<\/span>
          \n return<\/span> –<\/span>2<\/span>;<\/span> \/\/ -2 \u8868\u793a\u4f59\u989d\u4e0d\u8db3<\/span>
          \n }<\/span>
          \n \/\/ \u6b63\u5e38\u903b\u8f91<\/span>
          \n return<\/span> 0<\/span>;<\/span> \/\/ 0 \u8868\u793a\u6210\u529f<\/span>
          \n}<\/span><\/p>\n

          \/\/ \u597d：\u4f7f\u7528\u5f02\u5e38<\/span>
          \npublic<\/span> void<\/span> withdraw<\/span>(<\/span>String<\/span> accountId,<\/span> BigDecimal<\/span> amount)<\/span> {<\/span>
          \n if<\/span> (<\/span>amount.<\/span>compareTo<\/span>(<\/span>BigDecimal<\/span>.<\/span>ZERO<\/span>)<\/span> <=<\/span> 0<\/span>)<\/span> {<\/span>
          \n throw<\/span> new<\/span> IllegalArgumentException<\/span>(<\/span>"\u63d0\u73b0\u91d1\u989d\u5fc5\u987b\u5927\u4e8e\u96f6"<\/span>)<\/span>;<\/span>
          \n }<\/span>
          \n if<\/span> (<\/span>balance.<\/span>compareTo<\/span>(<\/span>amount)<\/span> <<\/span> 0<\/span>)<\/span> {<\/span>
          \n throw<\/span> new<\/span> InsufficientBalanceException<\/span>(<\/span>"\u8d26\u6237\u4f59\u989d\u4e0d\u8db3"<\/span>)<\/span>;<\/span>
          \n }<\/span>
          \n \/\/ \u6b63\u5e38\u903b\u8f91<\/span>
          \n}<\/span><\/p>\n

          \n

          \u516b\u3001\u5e38\u89c1\u53cd\u6a21\u5f0f\u4e0e\u89c4\u907f\u65b9\u6cd5<\/h3>\n

          8.1 \u53cd\u6a21\u5f0f\u4e00：\u5197\u957f\u7c7b（God Class）<\/h4>\n

          \u4e00\u4e2a\u7c7b\u627f\u62c5\u4e86\u8fc7\u591a\u7684\u804c\u8d23，\u4ee3\u7801\u91cf\u52a8\u8f84\u4e0a\u5343\u884c，\u6210\u4e3a\u7cfb\u7edf\u4e2d\u7684"\u4e0a\u5e1d\u7c7b"\u3002<\/p>\n

          \/\/ \u53cd\u6a21\u5f0f：\u4e00\u4e2a\u7c7b\u627f\u8f7d\u6240\u6709\u903b\u8f91<\/span>
          \npublic<\/span> class<\/span> UserManager<\/span> {<\/span>
          \n \/\/ \u7528\u6237 CRUD（\u7ea6 200 \u884c）<\/span>
          \n \/\/ \u6743\u9650\u9a8c\u8bc1（\u7ea6 150 \u884c）<\/span>
          \n \/\/ \u65e5\u5fd7\u8bb0\u5f55（\u7ea6 100 \u884c）<\/span>
          \n \/\/ \u90ae\u4ef6\u901a\u77e5（\u7ea6 100 \u884c）<\/span>
          \n \/\/ \u6570\u636e\u7edf\u8ba1（\u7ea6 200 \u884c）<\/span>
          \n \/\/ \u6587\u4ef6\u4e0a\u4f20（\u7ea6 150 \u884c）<\/span>
          \n \/\/ \u603b\u8ba1：\u7ea6 900 \u884c<\/span>
          \n}<\/span><\/p>\n

          \/\/ \u91cd\u6784\u65b9\u6848：\u6309\u5355\u4e00\u804c\u8d23\u539f\u5219\u62c6\u5206<\/span>
          \npublic<\/span> class<\/span> UserService<\/span> {<\/span> }<\/span> \/\/ \u7528\u6237 CRUD<\/span>
          \npublic<\/span> class<\/span> AuthService<\/span> {<\/span> }<\/span> \/\/ \u6743\u9650\u9a8c\u8bc1<\/span>
          \npublic<\/span> class<\/span> AuditLogger<\/span> {<\/span> }<\/span> \/\/ \u65e5\u5fd7\u8bb0\u5f55<\/span>
          \npublic<\/span> class<\/span> EmailNotificationService<\/span> {<\/span> }<\/span> \/\/ \u90ae\u4ef6\u901a\u77e5<\/span>
          \npublic<\/span> class<\/span> UserStatisticsService<\/span> {<\/span> }<\/span> \/\/ \u6570\u636e\u7edf\u8ba1<\/span>
          \npublic<\/span> class<\/span> FileUploadService<\/span> {<\/span> }<\/span> \/\/ \u6587\u4ef6\u4e0a\u4f20<\/span><\/p>\n

          8.2 \u53cd\u6a21\u5f0f\u4e8c：\u8fc7\u5ea6\u6ce8\u91ca<\/h4>\n

          \u6ce8\u91ca\u4e0d\u662f\u8d8a\u591a\u8d8a\u597d\u3002\u8fc7\u5ea6\u7684\u6ce8\u91ca\u5f80\u5f80\u662f\u547d\u540d\u4e0d\u5f53\u6216\u4ee3\u7801\u7ed3\u6784\u6df7\u4e71\u7684\u906e\u7f9e\u5e03\u3002<\/p>\n

          \/\/ \u53cd\u6a21\u5f0f：\u7528\u6ce8\u91ca\u89e3\u91ca\u6df7\u4e71\u7684\u903b\u8f91<\/span>
          \npublic<\/span> int<\/span> calculate<\/span>(<\/span>int<\/span> a,<\/span> int<\/span> b,<\/span> int<\/span> c)<\/span> {<\/span>
          \n \/\/ \u5148\u83b7\u53d6\u57fa\u7840\u503c<\/span>
          \n int<\/span> x =<\/span> a *<\/span> 2<\/span>;<\/span>
          \n \/\/ \u7136\u540e\u52a0\u4e0a\u8c03\u6574\u503c<\/span>
          \n x =<\/span> x +<\/span> b;<\/span>
          \n \/\/ \u5982\u679c c \u5927\u4e8e 10，\u8bf4\u660e\u662f\u7279\u6b8a\u8ba2\u5355，\u8981\u589e\u52a0\u5904\u7406<\/span>
          \n if<\/span> (<\/span>c ><\/span> 10<\/span>)<\/span> {<\/span>
          \n \/\/ \u7279\u6b8a\u8ba2\u5355\u8981\u591a\u52a0 5 \u4e2a\u70b9<\/span>
          \n x =<\/span> x *<\/span> 105<\/span> \/<\/span> 100<\/span>;<\/span>
          \n \/\/ \u8fd8\u8981\u518d\u51cf\u53bb\u57fa\u7840\u8c03\u6574<\/span>
          \n x =<\/span> x –<\/span> a;<\/span>
          \n }<\/span> else<\/span> {<\/span>
          \n \/\/ \u666e\u901a\u8ba2\u5355\u76f4\u63a5\u52a0 b<\/span>
          \n x =<\/span> x +<\/span> b;<\/span> \/\/ \u7b49\u7b49，\u524d\u9762\u5df2\u7ecf\u52a0\u8fc7 b \u4e86？<\/span>
          \n }<\/span>
          \n \/\/ \u8fd4\u56de\u6700\u7ec8\u7ed3\u679c<\/span>
          \n return<\/span> x;<\/span>
          \n}<\/span><\/p>\n

          \/\/ \u91cd\u6784\u65b9\u6848：\u6e05\u6670\u7684\u547d\u540d\u548c\u7ed3\u6784，\u6ce8\u91ca\u53ea\u9700\u8bf4\u660e\u4e1a\u52a1\u89c4\u5219<\/span>
          \n\/**
          \n * \u8ba1\u7b97\u8ba2\u5355\u8c03\u6574\u540e\u91d1\u989d\u3002
          \n * \u7279\u6b8a\u8ba2\u5355（\u6570\u91cf > 10）\u4eab\u53d7 5% \u6ea2\u4ef7\u5e76\u6263\u9664\u57fa\u7840\u6210\u672c\u3002
          \n *\/<\/span>
          \npublic<\/span> int<\/span> calculateAdjustedPrice<\/span>(<\/span>int<\/span> basePrice,<\/span> int<\/span> adjustment,<\/span> int<\/span> quantity)<\/span> {<\/span>
          \n int<\/span> adjustedPrice =<\/span> basePrice *<\/span> 2<\/span> +<\/span> adjustment;<\/span><\/p>\n

          if<\/span> (<\/span>quantity ><\/span> 10<\/span>)<\/span> {<\/span>
          \n return<\/span> adjustedPrice *<\/span> 105<\/span> \/<\/span> 100<\/span> –<\/span> basePrice;<\/span>
          \n }<\/span>
          \n return<\/span> adjustedPrice;<\/span>
          \n}<\/span><\/p>\n

          8.3 \u53cd\u6a21\u5f0f\u4e09：\u4e0d\u4e00\u81f4\u7684\u547d\u540d\u98ce\u683c<\/h4>\n

          \/\/ \u53cd\u6a21\u5f0f：\u540c\u4e00\u6982\u5ff5\u4f7f\u7528\u591a\u79cd\u547d\u540d\u98ce\u683c<\/span>
          \npublic<\/span> class<\/span> OrderHandler<\/span> {<\/span>
          \n private<\/span> int<\/span> orderCount;<\/span> \/\/ camelCase<\/span>
          \n private<\/span> int<\/span> max_order_count;<\/span> \/\/ snake_case\u2014\u2014\u4e0d\u4e00\u81f4！<\/span>
          \n private<\/span> int<\/span> m_ActiveFlag;<\/span> \/\/ \u5308\u7259\u5229\u547d\u540d\u6cd5\u2014\u2014\u5728 Java \u4e2d\u4e0d\u5e94\u4f7f\u7528<\/span><\/p>\n

          public<\/span> void<\/span> get_Order<\/span>(<\/span>)<\/span> {<\/span> }<\/span> \/\/ snake_case \u65b9\u6cd5\u540d\u2014\u2014\u5e94\u4e3a getOrder()<\/span>
          \n}<\/span><\/p>\n

          8.4 \u53cd\u6a21\u5f0f\u56db：\u6df1\u5c42\u5d4c\u5957<\/h4>\n

          \/\/ \u53cd\u6a21\u5f0f：\u7bad\u5934\u5f0f\u4ee3\u7801\u2014\u2014\u5d4c\u5957\u6df1\u5ea6\u8d85\u8fc7 4 \u5c42<\/span>
          \npublic<\/span> String<\/span> getDiscountLevel<\/span>(<\/span>User<\/span> user)<\/span> {<\/span>
          \n if<\/span> (<\/span>user !=<\/span> null<\/span>)<\/span> {<\/span> \/\/ \u7b2c 1 \u5c42<\/span>
          \n if<\/span> (<\/span>user.<\/span>isVip<\/span>(<\/span>)<\/span>)<\/span> {<\/span> \/\/ \u7b2c 2 \u5c42<\/span>
          \n if<\/span> (<\/span>user.<\/span>getPoints<\/span>(<\/span>)<\/span> ><\/span> 1000<\/span>)<\/span> {<\/span> \/\/ \u7b2c 3 \u5c42<\/span>
          \n if<\/span> (<\/span>user.<\/span>isActive<\/span>(<\/span>)<\/span>)<\/span> {<\/span> \/\/ \u7b2c 4 \u5c42<\/span>
          \n return<\/span> "\u8d85\u7ea7\u4f1a\u5458\u6298\u6263"<\/span>;<\/span>
          \n }<\/span>
          \n }<\/span>
          \n }<\/span>
          \n }<\/span>
          \n return<\/span> "\u666e\u901a\u6298\u6263"<\/span>;<\/span>
          \n}<\/span><\/p>\n

          \/\/ \u91cd\u6784\u65b9\u6848：\u4f7f\u7528\u536b\u8bed\u53e5（Guard Clause）\u51cf\u5c11\u5d4c\u5957<\/span>
          \npublic<\/span> String<\/span> getDiscountLevel<\/span>(<\/span>User<\/span> user)<\/span> {<\/span>
          \n if<\/span> (<\/span>user ==<\/span> null<\/span>)<\/span> {<\/span>
          \n return<\/span> "\u666e\u901a\u6298\u6263"<\/span>;<\/span>
          \n }<\/span>
          \n if<\/span> (<\/span>!<\/span>user.<\/span>isVip<\/span>(<\/span>)<\/span>)<\/span> {<\/span>
          \n return<\/span> "\u666e\u901a\u6298\u6263"<\/span>;<\/span>
          \n }<\/span>
          \n if<\/span> (<\/span>user.<\/span>getPoints<\/span>(<\/span>)<\/span> <=<\/span> 1000<\/span>)<\/span> {<\/span>
          \n return<\/span> "VIP \u6807\u51c6\u6298\u6263"<\/span>;<\/span>
          \n }<\/span>
          \n if<\/span> (<\/span>!<\/span>user.<\/span>isActive<\/span>(<\/span>)<\/span>)<\/span> {<\/span>
          \n return<\/span> "VIP \u6807\u51c6\u6298\u6263"<\/span>;<\/span>
          \n }<\/span>
          \n return<\/span> "\u8d85\u7ea7\u4f1a\u5458\u6298\u6263"<\/span>;<\/span>
          \n}<\/span><\/p>\n

          8.5 \u5e38\u89c1\u53cd\u6a21\u5f0f\u6c47\u603b\u8868<\/h4>\n\n\u53cd\u6a21\u5f0f\u5178\u578b\u7279\u5f81\u5371\u5bb3\u6539\u8fdb\u65b9\u5411<\/tr>\n\n\n\n\n\n\n\n\n\n
          \u5197\u957f\u7c7b（God Class）<\/td>\n\u5355\u7c7b\u8d85\u8fc7 500 \u884c<\/td>\n\u804c\u8d23\u4e0d\u6e05，\u96be\u4ee5\u6d4b\u8bd5\u548c\u590d\u7528<\/td>\n\u6309\u5355\u4e00\u804c\u8d23\u62c6\u5206<\/td>\n<\/tr>\n
          \u8fc7\u5ea6\u6ce8\u91ca<\/td>\n\u6ce8\u91ca\u91cf\u8fdc\u8d85\u4ee3\u7801\u91cf<\/td>\n\u7ef4\u62a4\u6210\u672c\u9ad8，\u5bb9\u6613\u8fc7\u65f6<\/td>\n\u6539\u8fdb\u547d\u540d\u7684\u4ee3\u7801\u7ed3\u6784<\/td>\n<\/tr>\n
          \u547d\u540d\u4e0d\u4e00\u81f4<\/td>\n\u9a7c\u5cf0\/\u86c7\u5f62\/\u5308\u7259\u5229\u6df7\u5408<\/td>\n\u9605\u8bfb\u65f6\u9891\u7e41\u5207\u6362\u8ba4\u77e5\u6a21\u5f0f<\/td>\n\u7edf\u4e00\u4e3a Java \u6807\u51c6\u98ce\u683c<\/td>\n<\/tr>\n
          \u6df1\u5c42\u5d4c\u5957<\/td>\n\u7f29\u8fdb\u8d85\u8fc7 4 \u5c42<\/td>\n\u903b\u8f91\u96be\u4ee5\u8ffd\u8e2a\u548c\u6d4b\u8bd5<\/td>\n\u4f7f\u7528\u536b\u8bed\u53e5\u63d0\u524d\u8fd4\u56de<\/td>\n<\/tr>\n
          \u9b54\u6cd5\u6570\u5b57<\/td>\n\u4ee3\u7801\u4e2d\u51fa\u73b0\u65e0\u6ce8\u91ca\u7684\u786c\u7f16\u7801\u6570\u503c<\/td>\n\u542b\u4e49\u4e0d\u660e，\u4fee\u6539\u56f0\u96be<\/td>\n\u5b9a\u4e49\u4e3a\u547d\u540d\u5e38\u91cf<\/td>\n<\/tr>\n
          \u8fc7\u957f\u53c2\u6570\u5217\u8868<\/td>\n\u65b9\u6cd5\u53c2\u6570\u8d85\u8fc7 5 \u4e2a<\/td>\n\u8c03\u7528\u6613\u9519，\u6d4b\u8bd5\u7ec4\u5408\u7206\u70b8<\/td>\n\u5c01\u88c5\u4e3a\u53c2\u6570\u5bf9\u8c61<\/td>\n<\/tr>\n
          \u6ce8\u91ca\u6389\u7684\u4ee3\u7801<\/td>\n\u5927\u6bb5\u88ab\u6ce8\u91ca\u6389\u7684\u65e7\u4ee3\u7801<\/td>\n\u6587\u4ef6\u81a8\u80c0，\u5236\u9020\u56f0\u60d1<\/td>\n\u76f4\u63a5\u5220\u9664，Git \u4fdd\u7559\u5386\u53f2<\/td>\n<\/tr>\n
          \u91cd\u590d\u4ee3\u7801<\/td>\n\u76f8\u540c\u903b\u8f91\u5728\u591a\u5904\u51fa\u73b0<\/td>\n\u4fee\u6539\u65f6\u9700\u8981\u540c\u6b65\u591a\u5904<\/td>\n\u63d0\u53d6\u516c\u5171\u65b9\u6cd5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          \n

          \u4e5d\u3001\u4f7f\u7528\u5de5\u5177\u5f3a\u5236\u6267\u884c\u7f16\u7801\u89c4\u8303<\/h3>\n

          \u89c4\u8303\u5982\u679c\u53ea\u505c\u7559\u5728\u6587\u6863\u5c42\u9762，\u8fdf\u65e9\u4f1a\u88ab\u56e2\u961f\u6210\u5458\u9057\u5fd8\u3002\u771f\u6b63\u6709\u6548\u7684\u89c4\u8303，\u9700\u8981\u4e0e\u5f00\u53d1\u5de5\u5177\u6df1\u5ea6\u96c6\u6210，\u5b9e\u73b0\u81ea\u52a8\u5316\u68c0\u67e5\u548c\u683c\u5f0f\u5316\u3002<\/p>\n

          9.1 IDE \u4ee3\u7801\u683c\u5f0f\u5316<\/h4>\n

          IntelliJ IDEA \u914d\u7f6e：<\/p>\n

          File \u2192 Settings \u2192 Editor \u2192 Code Style \u2192 Java
          \n – Tabs and Indents: Tab size = 4, Indent = 4, Continuation indent = 8
          \n – Wrapping and Braces: \u9009\u62e9\u9002\u5f53\u7684\u6362\u884c\u7b56\u7565
          \n – Imports: \u8bbe\u7f6e Import \u7b56\u7565, \u4e0d\u4f7f\u7528\u901a\u914d\u7b26\u5bfc\u5165 (Class count to use import with '*': 999)<\/p>\n

          \u4fdd\u5b58\u683c\u5f0f\u5316\u914d\u7f6e\u540e，\u53ef\u4ee5\u901a\u8fc7 Ctrl+Alt+L（Windows）\u6216 Cmd+Option+L（Mac）\u4e00\u952e\u683c\u5f0f\u5316\u5f53\u524d\u6587\u4ef6\u3002\u56e2\u961f\u5e94\u5c06\u683c\u5f0f\u5316\u914d\u7f6e\u6587\u4ef6（.editorconfig \u6216 IDEA \u7684 codeStyleConfig.xml）\u63d0\u4ea4\u5230\u7248\u672c\u5e93，\u786e\u4fdd\u6240\u6709\u6210\u5458\u4f7f\u7528\u76f8\u540c\u7684\u683c\u5f0f\u5316\u89c4\u5219\u3002<\/p>\n

          .editorconfig \u793a\u4f8b：<\/p>\n

          # EditorConfig \u6587\u4ef6\u2014\u2014\u8de8\u7f16\u8f91\u5668\u652f\u6301\u7684\u683c\u5f0f\u5316\u914d\u7f6e
          \nroot = true<\/p>\n

          [*]
          \ncharset = utf-8
          \nend_of_line = lf
          \nindent_style = space
          \nindent_size = 4
          \ninsert_final_newline = true
          \ntrim_trailing_whitespace = true<\/p>\n

          [*.java]
          \nindent_size = 4
          \ntab_width = 4
          \nmax_line_length = 120<\/p>\n

          [*.xml]
          \nindent_size = 4<\/p>\n

          [*.{yml,yaml}]
          \nindent_size = 2<\/p>\n

          [*.md]
          \ntrim_trailing_whitespace = false<\/p>\n

          9.2 Checkstyle \u63d2\u4ef6<\/h4>\n

          Checkstyle \u662f Java \u793e\u533a\u6700\u6210\u719f\u7684\u4ee3\u7801\u98ce\u683c\u68c0\u67e5\u5de5\u5177\u4e4b\u4e00，\u5b83\u652f\u6301 Google Java Style \u548c Sun Java Style \u4e24\u79cd\u4e3b\u6d41\u89c4\u8303，\u4e5f\u652f\u6301\u901a\u8fc7 XML \u6587\u4ef6\u81ea\u5b9a\u4e49\u89c4\u5219\u3002<\/p>\n

          Maven \u96c6\u6210 Checkstyle：<\/p>\n

          <!– pom.xml –><\/span>
          \n<<\/span>build<\/span>><\/span><\/span>
          \n <<\/span>plugins<\/span>><\/span><\/span>
          \n <<\/span>plugin<\/span>><\/span><\/span>
          \n <<\/span>groupId<\/span>><\/span><\/span>org.apache.maven.plugins<\/<\/span>groupId<\/span>><\/span><\/span>
          \n <<\/span>artifactId<\/span>><\/span><\/span>maven-checkstyle-plugin<\/<\/span>artifactId<\/span>><\/span><\/span>
          \n <<\/span>version<\/span>><\/span><\/span>3.3.1<\/<\/span>version<\/span>><\/span><\/span>
          \n <<\/span>configuration<\/span>><\/span><\/span>
          \n <<\/span>configLocation<\/span>><\/span><\/span>google_checks.xml<\/<\/span>configLocation<\/span>><\/span><\/span>
          \n <<\/span>encoding<\/span>><\/span><\/span>UTF-8<\/<\/span>encoding<\/span>><\/span><\/span>
          \n <<\/span>consoleOutput<\/span>><\/span><\/span>true<\/<\/span>consoleOutput<\/span>><\/span><\/span>
          \n <<\/span>failsOnError<\/span>><\/span><\/span>true<\/<\/span>failsOnError<\/span>><\/span><\/span>
          \n <<\/span>linkXRef<\/span>><\/span><\/span>false<\/<\/span>linkXRef<\/span>><\/span><\/span>
          \n <\/<\/span>configuration<\/span>><\/span><\/span>
          \n <<\/span>executions<\/span>><\/span><\/span>
          \n <<\/span>execution<\/span>><\/span><\/span>
          \n <<\/span>id<\/span>><\/span><\/span>validate<\/<\/span>id<\/span>><\/span><\/span>
          \n <<\/span>phase<\/span>><\/span><\/span>validate<\/<\/span>phase<\/span>><\/span><\/span>
          \n <<\/span>goals<\/span>><\/span><\/span>
          \n <<\/span>goal<\/span>><\/span><\/span>check<\/<\/span>goal<\/span>><\/span><\/span>
          \n <\/<\/span>goals<\/span>><\/span><\/span>
          \n <\/<\/span>execution<\/span>><\/span><\/span>
          \n <\/<\/span>executions<\/span>><\/span><\/span>
          \n <\/<\/span>plugin<\/span>><\/span><\/span>
          \n <\/<\/span>plugins<\/span>><\/span><\/span>
          \n<\/<\/span>build<\/span>><\/span><\/span><\/p>\n

          \u6267\u884c mvn checkstyle:check \u5373\u53ef\u626b\u63cf\u9879\u76ee\u4ee3\u7801\u3002\u5c06 Checkstyle \u7ed1\u5b9a\u5230 Maven \u7684 validate \u9636\u6bb5\u540e，\u6bcf\u6b21\u6784\u5efa\u90fd\u4f1a\u81ea\u52a8\u8fdb\u884c\u89c4\u8303\u68c0\u67e5，\u4e0d\u5408\u89c4\u7684\u4ee3\u7801\u5c06\u5bfc\u81f4\u6784\u5efa\u5931\u8d25\u3002<\/p>\n

          \u5e38\u89c1\u7684 Checkstyle \u68c0\u67e5\u9879：<\/p>\n\n\u68c0\u67e5\u9879\u8bf4\u660e\u63a8\u8350\u503c<\/tr>\n\n\n\n\n\n\n\n\n\n\n
          FileLength<\/td>\n\u5355\u4e2a\u6587\u4ef6\u6700\u5927\u884c\u6570<\/td>\n2000<\/td>\n<\/tr>\n
          MethodLength<\/td>\n\u5355\u4e2a\u65b9\u6cd5\u6700\u5927\u884c\u6570<\/td>\n150<\/td>\n<\/tr>\n
          ParameterNumber<\/td>\n\u65b9\u6cd5\u53c2\u6570\u6700\u5927\u4e2a\u6570<\/td>\n7<\/td>\n<\/tr>\n
          LineLength<\/td>\n\u6bcf\u884c\u6700\u5927\u5b57\u7b26\u6570<\/td>\n120<\/td>\n<\/tr>\n
          FileTabCharacter<\/td>\n\u6587\u4ef6\u4e2d\u662f\u5426\u5305\u542b Tab \u5b57\u7b26<\/td>\n\u4e0d\u5141\u8bb8<\/td>\n<\/tr>\n
          UnusedImports<\/td>\n\u662f\u5426\u6709\u672a\u4f7f\u7528\u7684\u5bfc\u5165<\/td>\n\u4e0d\u5141\u8bb8<\/td>\n<\/tr>\n
          MagicNumber<\/td>\n\u662f\u5426\u5305\u542b\u9b54\u6cd5\u6570\u5b57<\/td>\n\u5ffd\u7565 -1, 0, 1, 2<\/td>\n<\/tr>\n
          MissingJavadocMethod<\/td>\n\u65b9\u6cd5\u662f\u5426\u7f3a\u5c11 Javadoc<\/td>\npublic \u65b9\u6cd5\u5fc5\u987b\u6709<\/td>\n<\/tr>\n
          ConstantName<\/td>\n\u5e38\u91cf\u547d\u540d\u683c\u5f0f<\/td>\n^[A-Z][A-Z0-9]*(_[A-Z0-9]+)*$<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          9.3 SpotBugs \u4e0e SonarQube<\/h4>\n

          \u9664\u4e86 Checkstyle，\u8fd8\u6709\u66f4\u6df1\u5c42\u7684\u4ee3\u7801\u8d28\u91cf\u5206\u6790\u5de5\u5177：<\/p>\n

            \n
          • SpotBugs（FindBugs \u7684\u7ee7\u4efb\u8005）：\u5206\u6790\u5b57\u8282\u7801，\u68c0\u6d4b\u6f5c\u5728\u7684 Bug \u6a21\u5f0f，\u5982\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u3001\u8d44\u6e90\u672a\u5173\u95ed\u3001\u9519\u8bef\u7684\u540c\u6b65\u7b49<\/li>\n
          • SonarQube：\u63d0\u4f9b\u5168\u9762\u7684\u4ee3\u7801\u8d28\u91cf\u5e73\u53f0，\u6db5\u76d6 Bug \u68c0\u6d4b\u3001\u4ee3\u7801\u574f\u5473\u9053\u3001\u5b89\u5168\u6f0f\u6d1e\u3001\u6280\u672f\u503a\u52a1\u91cf\u5316\u7b49\u591a\u4e2a\u7ef4\u5ea6<\/li>\n<\/ul>\n

            <!– Maven \u96c6\u6210 SpotBugs –><\/span>
            \n<<\/span>plugin<\/span>><\/span><\/span>
            \n <<\/span>groupId<\/span>><\/span><\/span>com.github.spotbugs<\/<\/span>groupId<\/span>><\/span><\/span>
            \n <<\/span>artifactId<\/span>><\/span><\/span>spotbugs-maven-plugin<\/<\/span>artifactId<\/span>><\/span><\/span>
            \n <<\/span>version<\/span>><\/span><\/span>4.8.3.0<\/<\/span>version<\/span>><\/span><\/span>
            \n <<\/span>configuration<\/span>><\/span><\/span>
            \n <<\/span>effort<\/span>><\/span><\/span>Max<\/<\/span>effort<\/span>><\/span><\/span>
            \n <<\/span>threshold<\/span>><\/span><\/span>Low<\/<\/span>threshold<\/span>><\/span><\/span>
            \n <<\/span>xmlOutput<\/span>><\/span><\/span>true<\/<\/span>xmlOutput<\/span>><\/span><\/span>
            \n <\/<\/span>configuration<\/span>><\/span><\/span>
            \n<\/<\/span>plugin<\/span>><\/span><\/span><\/p>\n

            9.4 Git \u63d0\u4ea4\u524d\u81ea\u52a8\u68c0\u67e5<\/h4>\n

            \u5c06\u7f16\u7801\u89c4\u8303\u68c0\u67e5\u96c6\u6210\u5230 Git Hook \u4e2d，\u5728 git commit \u4e4b\u524d\u81ea\u52a8\u8fd0\u884c\u68c0\u67e5，\u786e\u4fdd\u53ea\u6709\u7b26\u5408\u89c4\u8303\u7684\u4ee3\u7801\u624d\u80fd\u8fdb\u5165\u7248\u672c\u5e93\u3002<\/p>\n

            # .git\/hooks\/pre-commit（\u6216\u901a\u8fc7 maven-githook-plugin \u7ba1\u7406）<\/span>
            \n#!\/bin\/bash<\/span>
            \necho<\/span> "Running Checkstyle…"<\/span>
            \nmvn checkstyle:check
            \nif<\/span> [<\/span> $?<\/span> -ne<\/span> 0<\/span> ]<\/span>;<\/span> then<\/span>
            \n echo<\/span> "Checkstyle \u68c0\u67e5\u672a\u901a\u8fc7，\u8bf7\u4fee\u6b63\u540e\u91cd\u65b0\u63d0\u4ea4\u3002"<\/span>
            \n exit<\/span> 1<\/span>
            \nfi<\/span>
            \necho<\/span> "\u7f16\u7801\u89c4\u8303\u68c0\u67e5\u901a\u8fc7\u3002"<\/span><\/p>\n

            \n

            \u5341\u3001\u7f16\u5199\u81ea\u6587\u6863\u5316\u4ee3\u7801<\/h3>\n

            "\u4ee3\u7801\u5373\u6587\u6863"\u662f Clean Code \u54f2\u5b66\u7684\u6700\u9ad8\u8ffd\u6c42\u3002\u4e00\u7bc7\u597d\u7684\u4ee3\u7801，\u5176\u7ed3\u6784\u548c\u547d\u540d\u672c\u8eab\u5c31\u662f\u6700\u53ef\u9760\u7684\u6587\u6863\u2014\u2014\u56e0\u4e3a\u5b83\u6c38\u8fdc\u4e0e\u4ee3\u7801\u540c\u6b65，\u6c38\u8fdc\u662f\u6700\u65b0\u7684\u3002<\/p>\n

            10.1 \u7528\u547d\u540d\u66ff\u4ee3\u6ce8\u91ca<\/h4>\n

            \/\/ \u5dee：\u4f9d\u8d56\u6ce8\u91ca\u89e3\u91ca\u53d8\u91cf\u542b\u4e49<\/span>
            \n\/\/ \u68c0\u67e5\u7528\u6237\u662f\u5426\u6709\u6743\u9650\u8bbf\u95ee\u67d0\u9875\u9762<\/span>
            \nif<\/span> (<\/span>(<\/span>user.<\/span>getFlags<\/span>(<\/span>)<\/span> &<\/span> 0x04<\/span>)<\/span> !=<\/span> 0<\/span>)<\/span> {<\/span>
            \n \/\/ \u5141\u8bb8\u8bbf\u95ee<\/span>
            \n}<\/span><\/p>\n

            \/\/ \u597d：\u901a\u8fc7\u547d\u540d\u63ed\u793a\u610f\u56fe<\/span>
            \nif<\/span> (<\/span>user.<\/span>hasPermission<\/span>(<\/span>Permission<\/span>.<\/span>PAGE_ACCESS<\/span>)<\/span>)<\/span> {<\/span>
            \n \/\/ \u5141\u8bb8\u8bbf\u95ee<\/span>
            \n}<\/span><\/p>\n

            10.2 \u7528\u63d0\u53d6\u65b9\u6cd5\u66ff\u4ee3\u6ce8\u91ca<\/h4>\n

            \/\/ \u5dee：\u7528\u6ce8\u91ca\u5c06\u5927\u6bb5\u4ee3\u7801\u5206\u6bb5<\/span>
            \npublic<\/span> void<\/span> processOrder<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span>
            \n \/\/ \u6821\u9a8c\u8ba2\u5355\u6709\u6548\u6027<\/span>
            \n if<\/span> (<\/span>order ==<\/span> null<\/span>)<\/span> {<\/span> throw<\/span> .<\/span>.<\/span>.<\/span>;<\/span> }<\/span>
            \n if<\/span> (<\/span>order.<\/span>getItems<\/span>(<\/span>)<\/span>.<\/span>isEmpty<\/span>(<\/span>)<\/span>)<\/span> {<\/span> throw<\/span> .<\/span>.<\/span>.<\/span>;<\/span> }<\/span>
            \n if<\/span> (<\/span>order.<\/span>getStatus<\/span>(<\/span>)<\/span> !=<\/span> PENDING<\/span>)<\/span> {<\/span> throw<\/span> .<\/span>.<\/span>.<\/span>;<\/span> }<\/span><\/p>\n

            \/\/ \u8ba1\u7b97\u603b\u4ef7<\/span>
            \n BigDecimal<\/span> total =<\/span> BigDecimal<\/span>.<\/span>ZERO<\/span>;<\/span>
            \n for<\/span> (<\/span>Item<\/span> item :<\/span> order.<\/span>getItems<\/span>(<\/span>)<\/span>)<\/span> {<\/span>
            \n \/\/ …<\/span>
            \n }<\/span><\/p>\n

            \/\/ \u5e94\u7528\u6298\u6263<\/span>
            \n if<\/span> (<\/span>order.<\/span>hasCoupon<\/span>(<\/span>)<\/span>)<\/span> {<\/span>
            \n \/\/ …<\/span>
            \n }<\/span>
            \n}<\/span><\/p>\n

            \/\/ \u597d：\u63d0\u53d6\u65b9\u6cd5，\u65b9\u6cd5\u540d\u5c31\u662f\u6700\u597d\u7684\u6ce8\u91ca<\/span>
            \npublic<\/span> void<\/span> processOrder<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span>
            \n validateOrder<\/span>(<\/span>order)<\/span>;<\/span>
            \n BigDecimal<\/span> total =<\/span> calculateTotal<\/span>(<\/span>order)<\/span>;<\/span>
            \n BigDecimal<\/span> finalAmount =<\/span> applyDiscounts<\/span>(<\/span>order,<\/span> total)<\/span>;<\/span>
            \n completeOrder<\/span>(<\/span>order,<\/span> finalAmount)<\/span>;<\/span>
            \n}<\/span><\/p>\n

            private<\/span> void<\/span> validateOrder<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span> \/* … *\/<\/span> }<\/span>
            \nprivate<\/span> BigDecimal<\/span> calculateTotal<\/span>(<\/span>Order<\/span> order)<\/span> {<\/span> \/* … *\/<\/span> }<\/span>
            \nprivate<\/span> BigDecimal<\/span> applyDiscounts<\/span>(<\/span>Order<\/span> order,<\/span> BigDecimal<\/span> total)<\/span> {<\/span> \/* … *\/<\/span> }<\/span>
            \nprivate<\/span> void<\/span> completeOrder<\/span>(<\/span>Order<\/span> order,<\/span> BigDecimal<\/span> amount)<\/span> {<\/span> \/* … *\/<\/span> }<\/span><\/p>\n

            10.3 \u7528\u679a\u4e3e\u548c\u5e38\u91cf\u66ff\u4ee3\u9b54\u6cd5\u503c<\/h4>\n

            \/\/ \u5dee：\u9b54\u6cd5\u6570\u5b57<\/span>
            \npublic<\/span> void<\/span> handleStatus<\/span>(<\/span>int<\/span> status)<\/span> {<\/span>
            \n if<\/span> (<\/span>status ==<\/span> 0<\/span>)<\/span> {<\/span> \/* \u5f85\u5904\u7406 *\/<\/span> }<\/span>
            \n else<\/span> if<\/span> (<\/span>status ==<\/span> 1<\/span>)<\/span> {<\/span> \/* \u5904\u7406\u4e2d *\/<\/span> }<\/span>
            \n else<\/span> if<\/span> (<\/span>status ==<\/span> 2<\/span>)<\/span> {<\/span> \/* \u5df2\u5b8c\u6210 *\/<\/span> }<\/span>
            \n}<\/span><\/p>\n

            \/\/ \u597d：\u4f7f\u7528\u679a\u4e3e，\u8bed\u4e49\u6e05\u6670\u4e14\u7c7b\u578b\u5b89\u5168<\/span>
            \npublic<\/span> void<\/span> handleStatus<\/span>(<\/span>OrderStatus<\/span> status)<\/span> {<\/span>
            \n switch<\/span> (<\/span>status)<\/span> {<\/span>
            \n case<\/span> PENDING<\/span> -><\/span> handlePending<\/span>(<\/span>)<\/span>;<\/span>
            \n case<\/span> PROCESSING<\/span> -><\/span> handleProcessing<\/span>(<\/span>)<\/span>;<\/span>
            \n case<\/span> COMPLETED<\/span> -><\/span> handleCompleted<\/span>(<\/span>)<\/span>;<\/span>
            \n }<\/span>
            \n}<\/span><\/p>\n

            10.4 \u7528 Optional \u66ff\u4ee3 null \u68c0\u67e5\u6ce8\u91ca<\/h4>\n

            \/\/ \u5dee：\u6ce8\u91ca\u8bf4\u660e\u53ef\u80fd\u8fd4\u56de null<\/span>
            \n\/**
            \n * \u6839\u636e ID \u67e5\u627e\u7528\u6237\u3002
            \n * @return \u5982\u679c\u7528\u6237\u5b58\u5728\u5219\u8fd4\u56de User \u5bf9\u8c61，\u5426\u5219\u8fd4\u56de null
            \n *\/<\/span>
            \npublic<\/span> User<\/span> findById<\/span>(<\/span>Long<\/span> id)<\/span> {<\/span> \/* … *\/<\/span> }<\/span><\/p>\n

            \/\/ \u4f7f\u7528\u65b9\u5fc5\u987b\u8bb0\u4f4f\u68c0\u67e5 null<\/span>
            \nUser<\/span> user =<\/span> findById<\/span>(<\/span>id)<\/span>;<\/span>
            \nif<\/span> (<\/span>user !=<\/span> null<\/span>)<\/span> {<\/span> \/\/ \u5bb9\u6613\u9057\u5fd8\u8fd9\u4e2a\u68c0\u67e5<\/span>
            \n user.<\/span>getName<\/span>(<\/span>)<\/span>;<\/span>
            \n}<\/span><\/p>\n

            \/\/ \u597d：\u4f7f\u7528 Optional \u660e\u786e\u8868\u8fbe"\u53ef\u80fd\u4e0d\u5b58\u5728"\u7684\u8bed\u4e49<\/span>
            \n\/**
            \n * \u6839\u636e ID \u67e5\u627e\u7528\u6237\u3002
            \n * @return \u5305\u542b\u7528\u6237\u7684 Optional，\u5982\u679c\u7528\u6237\u4e0d\u5b58\u5728\u5219\u4e3a\u7a7a Optional
            \n *\/<\/span>
            \npublic<\/span> Optional<\/span><<\/span>User<\/span>><\/span><\/span> findById<\/span>(<\/span>Long<\/span> id)<\/span> {<\/span> \/* … *\/<\/span> }<\/span><\/p>\n

            \/\/ \u4f7f\u7528\u65b9\u88ab\u8feb\u5904\u7406"\u4e0d\u5b58\u5728"\u7684\u60c5\u51b5\u2014\u2014\u7f16\u8bd1\u5668\u4e0d\u4f1a\u8ba9\u4f60\u5ffd\u7565<\/span>
            \nfindById<\/span>(<\/span>id)<\/span>.<\/span>ifPresent<\/span>(<\/span>user -><\/span> System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>user.<\/span>getName<\/span>(<\/span>)<\/span>)<\/span>)<\/span>;<\/span><\/p>\n

            10.5 \u81ea\u6587\u6863\u5316\u4ee3\u7801\u7684\u5c42\u7ea7<\/h4>\n\n\u5c42\u7ea7\u7279\u5f81\u793a\u4f8b\u5f53\u4ec0\u4e48\u60c5\u51b5\u4e0b\u4f7f\u7528<\/tr>\n\n\n\n\n\n\n
            \u547d\u540d\u81ea\u89e3\u91ca<\/td>\n\u597d\u7684\u53d8\u91cf\u540d\/\u65b9\u6cd5\u540d<\/td>\ncalculateTotalPrice()<\/td>\n\u7edd\u5927\u591a\u6570\u573a\u666f<\/td>\n<\/tr>\n
            \u7ed3\u6784\u81ea\u89e3\u91ca<\/td>\n\u63d0\u53d6\u65b9\u6cd5 + \u536b\u8bed\u53e5<\/td>\n\u89c1\u4e0a\u8282\u4ee3\u7801\u793a\u4f8b<\/td>\n\u51fd\u6570\u4f53\u8d85\u8fc7 15 \u884c\u65f6<\/td>\n<\/tr>\n
            \u7c7b\u578b\u81ea\u89e3\u91ca<\/td>\n\u679a\u4e3e\/Optional\/\u81ea\u5b9a\u4e49\u7c7b\u578b<\/td>\nOrderStatus.PENDING<\/td>\n\u66ff\u4ee3 int\/String \u72b6\u6001\u7801<\/td>\n<\/tr>\n
            \u9700\u8981\u6ce8\u91ca<\/td>\n\u89e3\u91ca"\u4e3a\u4ec0\u4e48"<\/td>\n\u4e1a\u52a1\u89c4\u5219\u3001\u7279\u6b8a\u5904\u7406<\/td>\n\u65e0\u6cd5\u901a\u8fc7\u4ee3\u7801\u672c\u8eab\u8868\u8fbe\u7684\u8bbe\u8ba1\u610f\u56fe<\/td>\n<\/tr>\n
            \u9700\u8981\u6587\u6863<\/td>\n\u5b8c\u6574\u7684 Javadoc<\/td>\nAPI \u8bf4\u660e\u3001\u53c2\u6570\u7ea6\u675f<\/td>\n\u516c\u5171 API\u3001\u6846\u67b6\u5bf9\u5916\u63a5\u53e3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
            \n

            \u672c\u7ae0\u5173\u952e\u8bcd\u56de\u987e<\/h3>\n\n\u5173\u952e\u8bcd\u82f1\u6587\u6838\u5fc3\u6982\u5ff5<\/tr>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
            \u5355\u884c\u6ce8\u91ca<\/td>\nSingle-line Comment<\/td>\n\/\/ \u8d77\u59cb，\u7528\u4e8e\u7b80\u8981\u8bf4\u660e\u6216\u6807\u8bb0<\/td>\n<\/tr>\n
            \u591a\u884c\u6ce8\u91ca<\/td>\nMulti-line Comment<\/td>\n\/* *\/ \u5305\u56f4，\u4e0d\u80fd\u5d4c\u5957，\u9002\u5408\u957f\u8bf4\u660e<\/td>\n<\/tr>\n
            \u6587\u6863\u6ce8\u91ca<\/td>\nJavadoc Comment<\/td>\n\/** *\/ \u5305\u56f4，\u53ef\u751f\u6210 HTML API \u6587\u6863<\/td>\n<\/tr>\n
            \u5927\u9a7c\u5cf0\u547d\u540d<\/td>\nPascalCase<\/td>\n\u7c7b\u540d\u3001\u63a5\u53e3\u540d\u547d\u540d\u65b9\u5f0f，\u6bcf\u4e2a\u5355\u8bcd\u9996\u5b57\u6bcd\u5927\u5199<\/td>\n<\/tr>\n
            \u5c0f\u9a7c\u5cf0\u547d\u540d<\/td>\ncamelCase<\/td>\n\u65b9\u6cd5\u540d\u3001\u53d8\u91cf\u540d\u547d\u540d\u65b9\u5f0f，\u9996\u5355\u8bcd\u5168\u5c0f\u5199<\/td>\n<\/tr>\n
            \u86c7\u5f62\u5927\u5199<\/td>\nUPPER_SNAKE_CASE<\/td>\n\u5e38\u91cf\u547d\u540d\u65b9\u5f0f，\u5168\u5927\u5199\u52a0\u4e0b\u5212\u7ebf<\/td>\n<\/tr>\n
            K&R \u98ce\u683c<\/td>\nK&R Brace Style<\/td>\n\u5de6\u5927\u62ec\u53f7\u5728\u884c\u5c3e\u7684\u4ee3\u7801\u98ce\u683c（Java \u63a8\u8350）<\/td>\n<\/tr>\n
            \u536b\u8bed\u53e5<\/td>\nGuard Clause<\/td>\n\u524d\u7f6e\u6761\u4ef6\u5224\u65ad\u5982\u679c\u4e0d\u6ee1\u8db3\u5219\u7acb\u5373\u8fd4\u56de，\u51cf\u5c11\u5d4c\u5957<\/td>\n<\/tr>\n
            \u9b54\u6cd5\u503c<\/td>\nMagic Number<\/td>\n\u4ee3\u7801\u4e2d\u76f4\u63a5\u51fa\u73b0\u7684\u672a\u547d\u540d\u5e38\u91cf，\u5e94\u5b9a\u4e49\u4e3a\u547d\u540d\u5e38\u91cf<\/td>\n<\/tr>\n
            \u81ea\u6587\u6863\u5316\u4ee3\u7801<\/td>\nSelf-Documenting Code<\/td>\n\u901a\u8fc7\u547d\u540d\u548c\u7ed3\u6784\u4f7f\u5f97\u4ee3\u7801\u672c\u8eab\u4e0d\u9700\u8981\u989d\u5916\u6ce8\u91ca<\/td>\n<\/tr>\n
            Checkstyle<\/td>\n\u2014<\/td>\nJava \u4ee3\u7801\u98ce\u683c\u81ea\u52a8\u5316\u68c0\u67e5\u5de5\u5177<\/td>\n<\/tr>\n
            Javadoc \u6807\u7b7e<\/td>\nJavadoc Tags<\/td>\n@param\u3001@return\u3001@throws \u7b49\u7ed3\u6784\u5316\u6ce8\u91ca\u6807\u7b7e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
            \n

            \u601d\u8003\u4e0e\u7ec3\u4e60<\/h3>\n
          • \n

            \u6ce8\u91ca\u5ba1\u8ba1：\u9009\u62e9\u4f60\u6700\u8fd1\u7f16\u5199\u7684\u4e00\u4e2a Java \u7c7b（\u4e0d\u5c11\u4e8e 200 \u884c），\u9010\u884c\u5ba1\u89c6\u5176\u4e2d\u7684\u6ce8\u91ca\u3002\u54ea\u4e9b\u6ce8\u91ca\u662f"\u590d\u8ff0\u4ee3\u7801"\u578b\u7684\u65e0\u6548\u6ce8\u91ca？\u54ea\u4e9b\u5730\u65b9\u7f3a\u5c11\u4e86\u5bf9"\u4e3a\u4ec0\u4e48"\u7684\u89e3\u91ca？\u5c06\u6539\u8fdb\u540e\u7684\u7248\u672c\u4e0e\u539f\u59cb\u7248\u672c\u8fdb\u884c\u5bf9\u6bd4\u3002<\/p>\n<\/li>\n

          • \n

            Javadoc \u5b9e\u6218：\u4e3a\u4e00\u4e2a\u5305\u542b\u81f3\u5c11 5 \u4e2a public \u65b9\u6cd5\u7684\u5de5\u5177\u7c7b\u7f16\u5199\u5b8c\u6574\u7684 Javadoc \u6ce8\u91ca，\u5305\u542b @param\u3001@return\u3001@throws\u3001@see \u548c @since \u6807\u7b7e\u3002\u4f7f\u7528 javadoc \u547d\u4ee4\u751f\u6210 HTML \u6587\u6863，\u67e5\u770b\u6700\u7ec8\u7684\u8f93\u51fa\u6548\u679c\u3002<\/p>\n<\/li>\n

          • \n

            \u547d\u540d\u91cd\u6784：\u627e\u4e00\u6bb5\u4f60\u6216\u540c\u4e8b\u4e4b\u524d\u5199\u7684\u3001\u547d\u540d\u8f83\u4e3a\u968f\u610f\u7684\u4ee3\u7801，\u6309\u7167\u672c\u6587\u7684\u547d\u540d\u89c4\u8303\u8fdb\u884c\u5168\u9762\u91cd\u6784\u3002\u7279\u522b\u6ce8\u610f\u5e03\u5c14\u53d8\u91cf\u7684\u547d\u540d\u3001\u65b9\u6cd5\u52a8\u8bcd\u524d\u7f00\u7684\u9009\u62e9\u3001\u5e38\u91cf\u7684\u63d0\u53d6\u3002<\/p>\n<\/li>\n

          • \n

            Checkstyle \u96c6\u6210：\u5728\u9879\u76ee\u4e2d\u96c6\u6210 Checkstyle \u63d2\u4ef6（Maven \u6216 Gradle），\u9009\u62e9 Google Java Style \u6216\u963f\u91cc\u5df4\u5df4\u89c4\u8303\u4f5c\u4e3a\u68c0\u67e5\u57fa\u51c6\u3002\u8fd0\u884c\u68c0\u67e5，\u8bb0\u5f55\u53d1\u73b0\u7684\u8fdd\u89c4\u9879\u6570\u91cf，\u5e76\u5236\u5b9a\u4fee\u590d\u8ba1\u5212\u3002<\/p>\n<\/li>\n

          • \n

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