{"id":52026,"date":"2025-08-11T09:40:03","date_gmt":"2025-08-11T01:40:03","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/52026.html"},"modified":"2025-08-11T09:40:03","modified_gmt":"2025-08-11T01:40:03","slug":"java%ef%bc%8c%e5%85%ab%e8%82%a1%ef%bc%8ccv%ef%bc%8c%e7%ae%97%e6%b3%95-%e5%8f%8c%e9%9d%9e%e7%a0%940%e5%9b%9b%e4%bf%ae%e4%b9%8b%e8%b7%afday30","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/52026.html","title":{"rendered":"Java\uff0c\u516b\u80a1\uff0ccv\uff0c\u7b97\u6cd5\u2014\u2014\u53cc\u975e\u78140\u56db\u4fee\u4e4b\u8defday30"},"content":{"rendered":"<p id=\"main-toc\">\u76ee\u5f55<\/p>\n<p id=\"%E6%98%A8%E6%97%A5%E6%80%BB%E7%BB%93-toc\" style=\"margin-left:40px\">\u6628\u65e5\u603b\u7ed3<\/p>\n<p id=\"%E4%BB%8A%E6%97%A5%E8%AE%A1%E5%88%92-toc\" style=\"margin-left:40px\">\u4eca\u65e5\u8ba1\u5212<\/p>\n<p id=\"JVM-toc\" style=\"margin-left:40px\">JVM<\/p>\n<p id=\"%E6%95%B0%E6%8D%AE%E5%BA%93%E2%80%94%E2%80%94%E7%B4%A2%E5%BC%95-toc\" style=\"margin-left:40px\">\u6570\u636e\u5e93\u2014\u2014\u7d22\u5f15<\/p>\n<p id=\"DBTz-1754864169438-toc\" style=\"margin-left:80px\">\u7d22\u5f15\u8bed\u6cd5<\/p>\n<p id=\"hZo1-1754864169457-toc\" style=\"margin-left:80px\">SQL\u6027\u80fd\u5206\u6790<\/p>\n<p id=\"rcOv-1754864169466-toc\" style=\"margin-left:80px\">\u6162\u67e5\u8be2\u65e5\u5fd7<\/p>\n<p id=\"bQyf-1754864169497-toc\" style=\"margin-left:80px\">\u7d22\u5f15\u7684\u4f7f\u7528\u539f\u5219&#xff08;\u6ee1\u8db3\u6700\u5de6\u524d\u7f00\u6cd5\u5219&#xff09;<\/p>\n<p id=\"pJ5Q-1754864169520-toc\" style=\"margin-left:80px\">\u7d22\u5f15\u7684\u8bbe\u8ba1\u539f\u5219<\/p>\n<p id=\"%E6%98%A8%E6%97%A5%E5%85%AB%E8%82%A1%E7%AD%94%E6%A1%88%C2%A0-toc\" style=\"margin-left:40px\">\u6628\u65e5\u516b\u80a1\u7b54\u6848\u00a0<\/p>\n<p id=\"%E4%BB%8A%E6%97%A5%E5%85%AB%E8%82%A1-toc\" style=\"margin-left:40px\">\u4eca\u65e5\u516b\u80a1<\/p>\n<p id=\"%E6%80%BB%E7%BB%93%E2%80%8B%E7%BC%96%E8%BE%91-toc\" style=\"margin-left:40px\">\u603b\u7ed3\u200b\u7f16\u8f91<\/p>\n<hr id=\"hr-toc\" \/>\n<h3 style=\"text-align:center\">\u6628\u65e5\u603b\u7ed3<\/h3>\n<ul>\n<li>JVM\u5e95\u5c42\u539f\u7406\u5b66\u4e60&#xff0c;mysql\u8fdb\u9636\u7bc7\u2014\u2014\u7d22\u5f15<\/li>\n<li>cv&#xff08;\u505c\u6ede\u4e2d&#xff09;<\/li>\n<li>\u5c0f\u6797coding&#8211;Spring\u9762\u8bd5\u7bc7(1\/7)<\/li>\n<li>\u4ee3\u7801\u968f\u60f3\u5f55\u2014\u2014\u4ece\u4e2d\u5e8f\u4e0e\u540e\u5e8f\u904d\u5386\u5e8f\u5217\u6784\u9020\u4e8c\u53c9\u6811<\/li>\n<\/ul>\n<h3 id=\"%E4%BB%8A%E6%97%A5%E8%AE%A1%E5%88%92\" style=\"text-align:center\">\u4eca\u65e5\u8ba1\u5212<\/h3>\n<ul>\n<li>JVM\u5e95\u5c42\u539f\u7406\u5b66\u4e60&#xff0c;\u5b66\u4e60mysql\u8fdb\u9636\u7bc7<\/li>\n<li>cv&#xff08;\u505c\u6ede\u4e2d&#xff09;<\/li>\n<li>\u5c0f\u6797coding&#8211;Spring\u9762\u8bd5\u7bc7(2\/7)<\/li>\n<li>\u7801\u968f\u60f3\u5f55\u2014\u2014\u6700\u5927\u4e8c\u53c9\u6811<\/li>\n<\/ul>\n<h3 id=\"JVM\">JVM<\/h3>\n<ul style=\"margin-left:0;margin-right:0\">\n<li style=\"text-align:left\">\u5728\u521b\u5efa\u5bf9\u8c61\u8fc7\u7a0b\u4e2d&#xff0c;\u4e09\u8005\u7684\u5173\u7cfb\u5982\u4e0b<\/li>\n<\/ul>\n<p> <img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"174\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811013950-689949e6ce1a7.png\" width=\"623\" \/><\/p>\n<ul style=\"margin-left:0;margin-right:0\">\n<li style=\"text-align:left\">\u65b9\u6cd5\u533a\u7684\u5927\u5c0f\u53ef\u4ee5\u56fa\u5b9a\u4e5f\u53ef\u4ee5\u6269\u5c55<\/li>\n<li style=\"text-align:left\">jdk8\u4ee5\u524d&#xff0c;\u672c\u8d28\u4e0a&#xff0c;\u65b9\u6cd5\u533a\u548c\u6c38\u4e45\u4ee3\u5e76\u4e0d\u7b49\u4ef7\u3002jdk8\u4ee5\u540e&#xff0c;\u5e9f\u5f03\u4e86\u6c38\u4e45\u4ee3\u6982\u5ff5&#xff0c;\u7528\u5185\u5b58\u4e2d\u5143\u7a7a\u95f4\u66ff\u4ee3 \u3002\u6c38\u4e45\u4ee3\u548c\u5143\u7a7a\u95f4\u5e76\u4e0d\u53ea\u662f\u540d\u5b57\u53d8\u4e86&#xff0c;\u5185\u5b58\u7ed3\u6784\u4e5f\u8c03\u6574\u4e86<\/li>\n<li style=\"text-align:left\">\u5143\u7a7a\u95f4\u4e0d\u5728\u865a\u62df\u673a\u8bbe\u7f6e\u7684\u5185\u5b58\u4e2d&#xff0c;\u800c\u662f\u4f7f\u7528\u672c\u5730\u5185\u5b58<\/li>\n<li style=\"text-align:left\">\u65b9\u6cd5\u533a\u5b58\u50a8JVM\u52a0\u8f7d\u7684\u7c7b\u578b\u4fe1\u606f\u3001\u5e38\u91cf\u3001\u9759\u6001\u53d8\u91cf\u3001\u65b9\u6cd5\u4fe1\u606f&#xff08;\u540d\u79f0\u548c\u53c2\u6570\u548c\u65b9\u6cd5\u7684\u5b57\u8282\u7801&#xff0c;\u64cd\u4f5c\u6570\u6808\u7b49\u7b49&#xff09;&#xff0c;\u4ee5\u53ca\u7f16\u8bd1\u5668\u7f16\u8bd1\u540e\u7684\u4ee3\u7801\u7f13\u5b58 \u7b49\u3002<\/li>\n<li style=\"text-align:left\">\u65b9\u6cd5\u533a\u4e2d\u4e3a\u4ec0\u4e48\u8981\u5e38\u91cf\u6c60\u5462\u3002\u5982\u679c\u5c06\u4e00\u4e2a\u7a0b\u5e8f\u4e2d\u7684\u4ee3\u7801\u5168\u90e8\u5b58\u50a8\u5230\u5b57\u8282\u7801\u6587\u4ef6\u4e2d&#xff0c;\u4ed6\u7684\u5927\u5c0f\u4f1a\u975e\u5e38\u7684\u5927\u3002\u5982\u679c\u4ee3\u7801\u591a&#xff0c;\u5f15\u7528\u5230\u7684\u7ed3\u6784\u4f1a\u66f4\u591a\u3002\u56e0\u6b64&#xff0c;\u53ef\u4ee5\u5c06\u4e00\u4e9b<\/li>\n<\/ul>\n<p> \u4ee3\u7801\u89c4\u5212\u5230\u5e38\u91cf\u6c60\u4e2d&#xff0c;\u5982\u679c\u7528\u5230&#xff0c;\u4ece\u5e38\u91cf\u6c60\u4e2d\u8c03\u7f16\u53f7\u6765\u4f7f\u7528<\/p>\n<h3 id=\"%E6%95%B0%E6%8D%AE%E5%BA%93%E2%80%94%E2%80%94%E7%B4%A2%E5%BC%95\" style=\"text-align:left\">\u6570\u636e\u5e93\u2014\u2014\u7d22\u5f15<\/h3>\n<ul style=\"margin-left:0;margin-right:0\">\n<li style=\"text-align:left\">\u7d22\u5f15\u662f\u5e2e\u52a9mysql\u9ad8\u6548\u83b7\u53d6\u6570\u636e\u7684\u6570\u636e\u7ed3\u6784&#xff0c;\u7ef4\u62a4\u7740\u6ee1\u8db3\u7279\u5b9a\u67e5\u627e\u7b97\u6cd5\u7684\u6570\u636e\u7ed3\u6784&#xff0c;\u8fd9\u79cd\u7ed3\u6784\u4ee5\u67d0\u79cd\u65b9\u5f0f\u5f15\u7528\u6570\u636e\u3002<\/li>\n<li style=\"text-align:left\">\u7d22\u5f15\u7684\u4f18\u7f3a\u70b9&#xff0c;\u5982\u4e0b<\/li>\n<\/ul>\n<p> <img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"259\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811013951-689949e743452.png\" width=\"1544\" \/><\/p>\n<ul style=\"margin-left:0;margin-right:0\">\n<li style=\"text-align:left\">InnoDB\u5b58\u50a8\u5f15\u64ce\u7684\u7d22\u5f15\u91c7\u7528\u7684\u662fB&#043;\u6811\u7684\u7ed3\u6784&#xff0c;\u4e0e\u6570\u636e\u7ed3\u6784\u7684B&#043;\u6811\u4e0d\u540c&#xff0c;\u4ed6\u7684\u53f6\u5b50\u7ed3\u70b9\u662f\u53cc\u5411\u7684&#xff0c;\u63d0\u9ad8\u533a\u95f4\u8bbf\u95ee\u7684\u6027\u80fd\u3002&#xff08;\u6811\u4e2d\u975e\u53f6\u5b50\u7ed3\u70b9\u4ec5\u8d77\u5230\u7d22\u5f15\u7684\u4f5c\u7528&#xff0c;\u4e0d\u5b58\u50a8\u6570\u636e\u3002\u6570\u636e\u5b58\u50a8\u5728\u53f6\u5b50\u8282\u70b9\u4e0a&#xff09;\u5982\u4e0b\u56fe<\/li>\n<\/ul>\n<p> <img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"493\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811013952-689949e8827eb.png\" width=\"1531\" \/><\/p>\n<ul style=\"margin-left:0;margin-right:0\">\n<li style=\"text-align:left\">\u54c8\u5e0c\u7d22\u5f15&#xff1a;\u57fa\u4e8e\u54c8\u5e0c\u7b97\u6cd5&#xff0c;\u5904\u7406\u51b2\u7a81\u7684\u65b9\u5f0f\u91c7\u7528\u94fe\u8868\u89e3\u51b3\u3002\u5176\u67e5\u8be2\u6548\u7387\u9ad8\u3002\u4f46\u65e0\u6cd5\u5229\u7528\u7d22\u5f15\u5b8c\u6210\u6392\u5e8f\u64cd\u4f5c&#xff0c;hash\u7d22\u5f15\u4e0d\u652f\u6301\u8303\u56f4\u5339\u914d&#xff0c;\u53ea\u652f\u6301\u7b49\u503c\u5339\u914d\u3002InnoDB\u4e2d\u5177\u6709\u81ea\u9002\u5e94hash\u529f\u80fd<\/li>\n<li style=\"text-align:left\">\u7d22\u5f15\u7684\u5206\u7c7b&#xff0c;\u5982\u4e0b\u56fe<\/li>\n<\/ul>\n<p> <img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"440\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811013953-689949e9cca90.png\" width=\"1547\" \/><\/p>\n<ul style=\"margin-left:0;margin-right:0\">\n<li style=\"text-align:left\">\u6839\u636e\u7d22\u5f15\u7684\u5b58\u50a8\u5f62\u5f0f&#xff0c;\u53c8\u53ef\u4ee5\u5206\u4e3a\u805a\u96c6\u7d22\u5f15\u548c\u4e8c\u7ea7\u7d22\u5f15<\/li>\n<\/ul>\n<p> <img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"736\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811013956-689949ec8a8c2.png\" width=\"1559\" \/><\/p>\n<ul style=\"margin-left:0;margin-right:0\"><\/ul>\n<p> <img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"523\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811013959-689949ef33918.png\" width=\"1562\" \/><\/p>\n<h4 id=\"DBTz-1754864169438\" style=\"text-align:left\">\u7d22\u5f15\u8bed\u6cd5<\/h4>\n<ul style=\"margin-left:0;margin-right:0\">\n<li style=\"text-align:left\">\u521b\u5efa\u7d22\u5f15<\/li>\n<\/ul>\n<p> CREATE \u3010UNIQUE|FULLTEXT\u3011 INDEX index_name ON table_name (idnex_col_name,&#8230;)<\/p>\n<ul style=\"margin-left:0;margin-right:0\">\n<li style=\"text-align:left\">\u67e5\u770b\u7d22\u5f15<\/li>\n<\/ul>\n<p> SHOW INDEX FROM table_name;<\/p>\n<ul style=\"margin-left:0;margin-right:0\">\n<li style=\"text-align:left\">\u5220\u9664\u7d22\u5f15<\/li>\n<\/ul>\n<p> DROP INDEX index_name ON table_name;<\/p>\n<h4 id=\"hZo1-1754864169457\" style=\"text-align:left\">SQL\u6027\u80fd\u5206\u6790<\/h4>\n<p> \u901a\u8fc7\u4ee5\u4e0b\u6307\u4ee4\u6765\u67e5\u8be2\u5f53\u524d\u6570\u636e\u5e93\u7684\u8bbf\u95ee\u9891\u6b21<\/p>\n<p> SHOW GLOBAL STATUS LIKE &#039;\u8868\u540d&#039; \u7528_\u8868\u793a\u5339\u914d\u5b57\u7b26<\/p>\n<h4 id=\"rcOv-1754864169466\" style=\"text-align:left\">\u6162\u67e5\u8be2\u65e5\u5fd7<\/h4>\n<p> \u8bb0\u5f55\u4e86\u6240\u6709\u6267\u884c\u65f6\u95f4\u8d85\u8fc7\u6307\u5b9a\u53c2\u6570\u7684\u6240\u6709SQL\u8bed\u53e5\u7684\u65e5\u5fd7\u3002<\/p>\n<p> \u6162\u67e5\u8be2\u65e5\u5fd7\u7684\u6587\u4ef6\u5728\/var\/lib\/mysql\u4e2d&#xff0c;\u91cc\u9762\u6709\u4e00\u4e2alocalhost-slow.log\u6587\u4ef6&#xff0c;\u91cc\u9762\u8bb0\u5f55\u7740\u6162\u67e5\u8be2\u7684\u4fe1\u606f<\/p>\n<p> \u53ef\u7528\u4ee5\u4e0b\u6307\u4ee4\u67e5\u8be2\u6bcf\u6761\u6307\u4ee4\u7684\u8017\u65f6\u60c5\u51b5<\/p>\n<p> show profiles&#xff1b;<\/p>\n<p> \u901a\u8fc7\u6267\u884c\u65f6\u95f4\u5224\u65adSQL\u7684\u6267\u884c\u6027\u80fd&#xff0c;\u6267\u884c\u65f6\u95f4\u957f&#xff0c;\u8bf4\u660e\u6267\u884c\u6027\u80fd\u9ad8&#xff1b;\u6267\u884c\u65f6\u95f4\u957f&#xff0c;\u8bf4\u660e\u6267\u884c\u6027\u80fd\u4f4e\u3002&#xff08;\u7c97\u7565\u7684\u53bb\u5224\u5b9a&#xff09;<\/p>\n<p> \u4e5f\u53ef\u7528\u91c7\u7528explain\u6267\u884c\u8ba1\u5212\u67e5\u8be2\u6027\u80fd&#xff08;\u7528\u5230\u7684\u65f6\u5019\u518d\u53bb\u67e5\u5c31\u884c&#xff09;&#xff0c;\u5176\u4e2d\u53c2\u6570\u89e3\u91ca\u5982\u4e0b<\/p>\n<ul style=\"margin-left:0;margin-right:0\">\n<li style=\"text-align:left\">Id&#xff1a;\u67e5\u8be2\u7684\u5e8f\u5217\u53f7&#xff0c;id\u76f8\u540c&#xff0c;\u6267\u884c\u987a\u5e8f\u4ece\u4e0a\u5230\u4e0b&#xff1b;id\u4e0d\u540c&#xff0c;\u503c\u8d8a\u5927&#xff0c;\u8d8a\u5148\u6267\u884c\u3002<\/li>\n<li style=\"text-align:left\">select_type&#xff1a;\u8868\u793aselect\u7684\u7c7b\u578b&#xff08;\u4e0d\u91cd\u8981&#xff09;<\/li>\n<li style=\"text-align:left\">type&#xff1a;\u8868\u793a\u8fde\u63a5\u7684\u7c7b\u578b&#xff0c;\u6027\u80fd\u7531\u597d\u5230\u5dee\u7c7b\u578b\u4e3a&#xff08;NULL&#xff0c;system&#xff0c;const&#xff0c;eq_ref,ref,range,index,all&#xff09;&#xff0c;\u7c7b\u578b\u4f18\u5316\u6700\u597d\u4fdd\u6301\u5728\u524d\u9762<\/li>\n<li style=\"text-align:left\">rows:MYSQL\u8ba4\u4e3a\u8981\u6267\u884c\u7684\u884c\u6570,\u65e9InnoDB\u4e2d\u662f\u4e2a\u4f30\u8ba1\u503c<\/li>\n<li style=\"text-align:left\">filtered&#xff1a;\u8868\u793a\u8fd4\u56de\u7ed3\u679c\u7684\u884c\u6570\u5360\u9700\u8bfb\u53d6\u884c\u6570\u7684\u767e\u5206\u6bd4&#xff0c;\u503c\u8d8a\u5927\u8d8a\u597d<\/li>\n<li style=\"text-align:left\">possible_key:\u53ef\u80fd\u7528\u5230\u7684\u7d22\u5f15<\/li>\n<li style=\"text-align:left\">key&#xff1a;\u5b9e\u9645\u7528\u5230\u7684\u7d22\u5f15<\/li>\n<li style=\"text-align:left\">key_len:\u7d22\u5f15\u7528\u5230\u7684\u957f\u5ea6<\/li>\n<\/ul>\n<h4 id=\"bQyf-1754864169497\" style=\"text-align:left\">\u7d22\u5f15\u7684\u4f7f\u7528\u539f\u5219&#xff08;\u6ee1\u8db3\u6700\u5de6\u524d\u7f00\u6cd5\u5219&#xff09;<\/h4>\n<p> \u4f7f\u7528\u7d22\u5f15\u53bb\u67e5\u8be2\u8bb0\u5f55\u4f1a\u5927\u5927\u52a0\u5feb\u67e5\u8be2\u901f\u5ea6<\/p>\n<p> 1.\u5728\u7d22\u5f15\u4e2d&#xff0c;\u5982\u679c\u5f15\u7528\u4e86\u591a\u5217\u7d22\u5f15&#xff0c;\u6700\u5de6\u4fa7\u7684\u5217\u8981\u5b58\u5728&#xff0c;\u4e00\u65e6\u6ca1\u6709\u51fa\u73b0&#xff0c;\u5c31\u4f1a\u6309\u5168\u8868\u626b\u63cf&#xff0c;\u4e0d\u4f1a\u8d70\u7d22\u5f15\u626b\u63cf\u3002<\/p>\n<p> 2.\u5982\u679c\u6700\u5de6\u4fa7\u7d22\u5f15\u5b57\u6bb5\u5b58\u5728&#xff0c;\u4e2d\u95f4\u90e8\u5206\u4e0d\u5b58\u5728&#xff0c;\u540e\u9762\u7684\u7d22\u5f15\u5b57\u6bb5\u4e5f\u4f1a\u5931\u6548\u3002<\/p>\n<p> 3.\u5982\u679c\u4e2d\u95f4\u7d22\u5f15\u5b57\u6bb5\u91c7\u7528\u4e86\u8303\u56f4\u67e5\u8be2&#xff0c;\u8be5\u5b57\u6bb5\u540e\u9762\u7684\u7d22\u5f15\u5b57\u6bb5\u4f1a\u5931\u6548&#xff08;\u5982\u679c\u91c7\u7528&gt;&#061;\u6216&lt;&#061;\u7684\u8bdd\u4f1a\u751f\u6548&#xff09;\u3002<\/p>\n<p> 4.\u4e0d\u8981\u5728\u7d22\u5f15\u5217\u4e0a\u8fdb\u884c\u8fd0\u7b97\u64cd\u4f5c&#xff0c;\u7d22\u5f15\u5c06\u5931\u6548<\/p>\n<p> 5.\u5b57\u7b26\u4e32\u7c7b\u578b\u5b57\u6bb5\u4f7f\u7528\u65f6&#xff0c;\u5982\u679c\u4e0d\u52a0\u5f15\u53f7&#xff0c;\u7d22\u5f15\u5c06\u4f1a\u5931\u6548<\/p>\n<p> 6.\u5982\u679c\u4ec5\u4ec5\u662f\u5c3e\u90e8\u6a21\u7cca\u5339\u914d&#xff0c;\u7d22\u5f15\u4e0d\u4f1a\u5931\u6548&#xff0c;\u5982\u679c\u662f\u5934\u90e8\u6a21\u7cca\u5339\u914d&#xff0c;\u7d22\u5f15\u5931\u6548&#xff08;\u5982\u679c\u5728\u5927\u89c4\u6a21\u7684\u67e5\u8be2\u4e0b&#xff0c;\u8981\u89c4\u907f\u5934\u90e8\u6a21\u7cca\u626b\u63cf&#xff09;<\/p>\n<p> 7.\u5982\u679cor\u8fde\u63a5\u7684\u4e24\u4e2a\u6761\u4ef6&#xff0c;\u5176\u4e2d\u4e00\u4e2a\u6761\u4ef6\u6ca1\u6709\u7d22\u5f15&#xff0c;\u5219\u6d89\u53ca\u7684\u7d22\u5f15\u90fd\u4e0d\u4f1a\u751f\u6548<\/p>\n<p> 8.\u6570\u636e\u5206\u5e03\u5f71\u54cd&#xff1a;\u5982\u679cMySQL\u8bc4\u4f30\u4f7f\u7528\u7d22\u5f15\u6bd4\u5168\u8868\u66f4\u6162&#xff0c;\u5219\u4e0d\u4f7f\u7528\u7d22\u5f15<\/p>\n<p> 9.SQL\u63d0\u793a&#xff1a;\u5728\u591a\u4e2a\u7d22\u5f15&#xff08;\u5b58\u5728\u5355\u5217\u7d22\u5f15\u548c\u8054\u5408\u7d22\u5f15&#xff09;\u60c5\u51b5\u4e0b&#xff0c;\u81ea\u5df1\u53ef\u4ee5\u89c4\u5b9a\u6839\u636e\u54ea\u4e2a\u7d22\u5f15\u6765\u67e5\u8be2\u3002\u7b80\u5355\u6765\u8bf4\u5c31\u662f\u5728SQL\u8bed\u53e5\u4e2d\u52a0\u5165\u4e00\u4e9b\u4eba\u4e3a\u7684\u63d0\u793a\u6765\u8fbe\u5230\u4f18\u5316\u64cd\u4f5c\u7684\u76ee\u7684<\/p>\n<p> 10.\u6ce8\u610f\u8981\u907f\u514d\u4f7f\u7528select * \u67e5\u8be2\u6240\u6709\u5b57\u6bb5\u64cd\u4f5c&#xff0c;\u56e0\u4e3a\u5bb9\u6613\u89e6\u53d1\u56de\u8868\u67e5\u8be2\u60c5\u51b5&#xff0c;\u5f71\u54cd\u6027\u80fd&#xff0c;\u89e3\u51b3\u65b9\u6848\u662f\u53ef\u4ee5\u91c7\u7528\u8054\u5408\u7d22\u5f15&#xff0c;\u8986\u76d6\u67e5\u8be2\u662f\u4e0d\u9700\u8981\u56de\u8868\u7684<\/p>\n<h4 id=\"pJ5Q-1754864169520\" style=\"text-align:left\">\u7d22\u5f15\u7684\u8bbe\u8ba1\u539f\u5219<\/h4>\n<li style=\"text-align:left\">\u9488\u5bf9\u6570\u636e\u91cf\u6bd4\u8f83\u5927&#xff0c;\u4e14\u67e5\u8be2\u6bd4\u8f83\u9891\u7e41\u7684\u8868\u5efa\u7acb\u7d22\u5f15&#xff0c;\u63d0\u9ad8\u68c0\u7d22\u6548\u7387<\/li>\n<li style=\"text-align:left\">\u9488\u5bf9\u4e8e\u4f5c\u4e3a\u67e5\u8be2\u6761\u4ef6&#xff08;where&#xff09;\u3001\u6392\u5e8f&#xff08;order by&#xff09;\u3001\u5206\u7ec4&#xff08;group by&#xff09;\u64cd\u4f5c\u7684\u5b57\u6bb5\u5efa\u7acb\u7d22\u5f15<\/li>\n<li style=\"text-align:left\">\u5c3d\u91cf\u9009\u62e9\u533a\u5206\u5ea6\u9ad8\u7684\u5217\u4f5c\u4e3a\u7d22\u5f15&#xff0c;\u5c3d\u91cf\u5efa\u7acb\u552f\u4e00\u7d22\u5f15&#xff0c;\u533a\u5206\u5ea6\u9ad8<\/li>\n<li style=\"text-align:left\">\u5982\u679c\u662f\u9488\u5bf9\u5b57\u7b26\u4e32\u7c7b\u578b\u7684\u5b57\u6bb5\u5efa\u7acb\u7d22\u5f15&#xff0c;\u5efa\u8bae\u5efa\u7acb\u524d\u7f00\u7d22\u5f15&#xff0c;\u51cf\u5c11\u6240\u5360\u7a7a\u95f4<\/li>\n<li style=\"text-align:left\">\u5c3d\u91cf\u4f7f\u7528\u8054\u5408\u7d22\u5f15&#xff0c;\u51cf\u5c11\u5355\u5217\u7d22\u5f15&#xff0c;\u67e5\u8be2\u65f6&#xff0c;\u8054\u5408\u7d22\u5f15\u5f88\u591a\u65f6\u5019\u53ef\u4ee5\u8986\u76d6\u7d22\u5f15&#xff0c;\u8282\u7701\u5b58\u50a8\u7a7a\u95f4&#xff0c;\u907f\u514d\u56de\u8868<\/li>\n<li style=\"text-align:left\">\u8981\u63a7\u5236\u7d22\u5f15\u7684\u6570\u91cf<\/li>\n<li style=\"text-align:left\">\u5982\u679c\u7d22\u5f15\u5217\u4e0d\u80fd\u5b58\u50a8null\u503c&#xff0c;\u8bf7\u5728\u521b\u5efa\u8868\u65f6\u4f7f\u7528NOT NULL\u6765\u7ea6\u675f<\/li>\n<h3 id=\"%E6%98%A8%E6%97%A5%E5%85%AB%E8%82%A1%E7%AD%94%E6%A1%88%C2%A0\">\u6628\u65e5\u516b\u80a1\u7b54\u6848\u00a0<\/h3>\n<ul>\n<li><span style=\"color:#ff9900\">\u8c08\u8c08\u5bf9Spring\u7684\u7406\u89e3<\/span><\/li>\n<\/ul>\n<p>Spring\u4f5c\u4e3a\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684java\u5f00\u53d1\u6846\u67b6&#xff0c;\u901a\u8fc7Ioc&#xff08;\u63a7\u5236\u53cd\u8f6c&#xff09;\u548cAOP&#xff08;\u9762\u76f8\u5207\u9762\u7f16\u7a0b&#xff09;\u4e24\u5927\u7279\u6027&#xff0c;\u89e3\u51b3\u4e86\u5f00\u53d1\u4e2d\u7ec4\u4ef6\u8026\u5408\u5ea6\u9ad8&#xff0c;\u914d\u7f6e\u590d\u6742\u7b49\u95ee\u9898\u3002\u540c\u65f6&#xff0c;\u8fd8\u5305\u542b\u4e86Web\u5e94\u7528\u5f00\u53d1Spring MVC\u3001\u5fae\u670d\u52a1\u67b6\u6784Spring Cloud\u3001\u4e00\u81f4\u7684\u4e8b\u52a1\u7ba1\u7406\u63a5\u53e3\u4ee5\u53ca\u96c6\u6210\u4e86\u591a\u79cd\u6d88\u606f\u961f\u5217\u6846\u67b6\u7b49\u6280\u672f\u3002<\/p>\n<p>\u5728Spring\u6846\u67b6\u4e2d&#xff0c;IOC\u548cAOP\u7684\u7ed3\u5408\u4f7f\u7528&#xff0c;\u53ef\u4ee5\u66f4\u597d\u7684\u5b9e\u73b0\u4ee3\u7801\u7684\u6a21\u5757\u5316\u548c\u5206\u5c42\u7ba1\u7406<\/p>\n<ul>\n<li><span style=\"color:#ff9900\">Spring IOC \u548cAOP\u7684\u7406\u89e3<\/span><\/li>\n<\/ul>\n<p>IOC:\u4f20\u7edf\u7684\u7a0b\u5e8f\u8bbe\u8ba1\u4e2d&#xff0c;\u5bf9\u8c61\u7684\u521b\u5efa\u548c\u4f9d\u8d56\u5173\u7cfb\u7684\u7ba1\u7406\u662f\u7531\u7a0b\u5e8f\u4ee3\u7801\u76f4\u63a5\u63a7\u5236\u7684&#xff0c;\u5728IOC\u6a21\u5f0f\u4e0b&#xff0c;\u8fd9\u4e9b\u63a7\u5236\u4ea4\u7ed9\u4e86Spring\u5bb9\u5668\u3002\u901a\u8fc7\u4f9d\u8d56\u6ce8\u5165&#xff08;DI&#xff09;\u5b9e\u73b0\u63a7\u5236\u53cd\u8f6c\u3002\u5c06\u5bf9\u8c61\u7684\u4f9d\u8d56\u5173\u7cfb\u901a\u8fc7\u5916\u90e8\u6ce8\u5165\u7684\u65b9\u5f0f\u63d0\u4f9b\u7ed9\u5bf9\u8c61&#xff0c;\u88abSpring\u5bb9\u6613\u7ba1\u7406\u7684\u5bf9\u8c61\u79f0\u4e3aBean\u3002\u8fd9\u6837\u53ef\u4ee5\u964d\u4f4e\u7ec4\u4ef6\u4e4b\u95f4\u7684\u8026\u5408\u5ea6&#xff0c;\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6d4b\u8bd5\u6027\u3002<\/p>\n<p>AOP&#xff1a;\u662f\u5bf9\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b&#xff08;OOP&#xff09;\u7684\u8865\u5145&#xff0c;\u5141\u8bb8\u5728\u4e0d\u4fee\u6539\u539f\u6709\u4e1a\u52a1\u903b\u8f91\u7684\u57fa\u7840\u4e0a&#xff0c;\u8fdb\u884c\u589e\u5f3a\u3002\u901a\u8fc7\u5b9a\u4e49\u5207\u9762&#xff08;Aspect&#xff09;\u3001\u5207\u70b9&#xff08;Pointcut&#xff09;\u548c\u901a\u77e5&#xff08;Advice&#xff09;\u6765\u5b9e\u73b0\u3002\u5207\u9762\u662f\u4e00\u4e2a\u5305\u542b\u4e86\u591a\u4e2a\u901a\u77e5\u548c\u5207\u70b9\u7684\u6a21\u5757&#xff0c;\u5207\u70b9\u5b9a\u4e49\u4e86\u54ea\u4e9b\u65b9\u6cd5\u4f1a\u88ab\u589e\u5f3a&#xff0c;\u901a\u77e5\u5219\u5b9a\u4e49\u4e86\u5728\u4f55\u65f6&#xff08;\u5982\u65b9\u6cd5\u6267\u884c\u524d\u3001\u540e&#xff09;\u6267\u884c\u589e\u5f3a\u903b\u8f91\u3002<\/p>\n<ul>\n<li><span style=\"color:#ff9900\">IOC\u548cAOP\u662f\u901a\u8fc7\u4ec0\u4e48\u673a\u5236\u6765\u5b9e\u73b0\u7684<\/span><\/li>\n<\/ul>\n<p>IOC&#xff1a;<\/p>\n<p>\u53cd\u5c04&#xff1a;\u5229\u7528\u53cd\u5c04\u673a\u5236\u6765\u52a8\u6001\u7684\u52a0\u8f7d\u7c7b\u3001\u521b\u5efa\u5bf9\u8c61\u5b9e\u4f8b\u4ee5\u53ca\u8c03\u7528\u5bf9\u8c61\u65b9\u6cd5<\/p>\n<p>DI&#xff1a;IOC\u7684\u72e0\u5fc3\u6982\u5ff5\u662f\u4f9d\u8d56\u6ce8\u5165&#xff0c;\u8d1f\u8d23\u7ba1\u7406\u7ec4\u4ef6\u4e4b\u95f4\u7684\u4f9d\u8d56\u5173\u7cfb<\/p>\n<p>IOC\u5bb9\u5668&#xff1a;\u662f\u5b9e\u73b0IOC\u7684\u6838\u5fc3<\/p>\n<p>AOP&#xff1a;<\/p>\n<p>AOP\u7684\u5b9e\u73b0\u4f9d\u8d56\u4e8e\u52a8\u6001\u4ee3\u7406\u6280\u672f\u3002\u52a8\u6001\u4ee3\u7406\u662f\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u751f\u6210\u4ee3\u7406\u5bf9\u8c61\u3002\u4e3b\u8981\u6709\u4e24\u79cd&#xff1a;\u57fa\u4e8eJDK\u7684\u52a8\u6001\u4ee3\u7406&#xff0c;\u57fa\u4e8eCGLIB\u7684\u52a8\u6001\u4ee3\u7406<\/p>\n<ul>\n<li><span style=\"color:#ff9900\">\u4f9d\u8d56\u6ce8\u5165\u7684\u4e86\u89e3<\/span><\/li>\n<\/ul>\n<p>\u4f20\u7edf\u521b\u5efa\u5bf9\u8c61\u4e2d&#xff0c;\u9700\u8981\u5728\u7c7b\u5185\u90e8new\u6765\u521b\u5efa\u4f9d\u8d56\u5bf9\u8c61&#xff0c;\u4f7f\u5f97\u7c7b\u4e0e\u7c7b\u4e4b\u95f4\u7684\u8026\u5408\u5ea6\u8f83\u9ad8<\/p>\n<p>\u800c\u4f9d\u8d56\u6ce8\u5165\u5219\u662f\u5c06\u5bf9\u8c61\u7684\u521b\u5efa\u548c\u4f9d\u8d56\u5173\u7cfb\u7684\u7ba1\u7406\u4ea4\u7ed9Srping\u5bb9\u5668\u6765\u5b8c\u6210&#xff0c;\u7c7b\u53ea\u9700\u8981\u58f0\u660e\u81ea\u5df1\u6240\u4f9d\u8d56\u7684\u5bf9\u8c61&#xff0c;\u4ece\u800c\u964d\u4f4e\u4e86\u8026\u5408\u5ea6\u3002<\/p>\n<h3 id=\"%E4%BB%8A%E6%97%A5%E5%85%AB%E8%82%A1\">\u4eca\u65e5\u516b\u80a1<\/h3>\n<ul>\n<li>\n<p>\u52a8\u6001\u4ee3\u7406\u662f\u4ec0\u4e48<\/p>\n<\/li>\n<li>\n<p>\u52a8\u6001\u4ee3\u7406\u548c\u9759\u6001\u4ee3\u7406\u7684\u533a\u522b<\/p>\n<\/li>\n<li>\n<p>AOP\u5b9e\u73b0\u6709\u54ea\u4e9b\u6ce8\u89e3<\/p>\n<\/li>\n<li>\n<p>\u4ec0\u4e48\u662f\u53cd\u5c04<\/p>\n<\/li>\n<\/ul>\n<h3 id=\"%E6%80%BB%E7%BB%93%E2%80%8B%E7%BC%96%E8%BE%91\">\u603b\u7ed3<img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"720\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811014000-689949f080879.png\" width=\"1280\" 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