{"id":32150,"date":"2025-04-23T04:35:58","date_gmt":"2025-04-22T20:35:58","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/32150.html"},"modified":"2025-04-23T04:35:58","modified_gmt":"2025-04-22T20:35:58","slug":"node%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%9e%e6%88%98-%e6%97%a5%e5%bf%97%e6%8c%81%e4%b9%85%e5%8c%96","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/32150.html","title":{"rendered":"node\u670d\u52a1\u5668\u5b9e\u6218-\u65e5\u5fd7\u6301\u4e45\u5316"},"content":{"rendered":"<p>\u65e5\u5fd7\u5bf9\u4e8e Web \u540e\u53f0\u5e94\u7528\u6765\u8bf4\u662f\u5fc5\u8981\u7684\uff0cKoa \u539f\u751f\u5e76\u4e0d\u652f\u6301\u652f\u6301\u65e5\u5fd7\u6a21\u5757\uff0c\u6240\u5e78 GitHub \u5df2\u7ecf\u6709\u5f88\u591a\u4f18\u79c0\u7684 Node.js \u65e5\u5fd7\u6846\u67b6\uff0c\u8fd9\u8282\u5b9e\u6218\u5c06\u4f7f\u7528 log4js-node \u6765\u5904\u7406 Koa \u7684\u65e5\u5fd7\uff0c\u5f53\u7136\u4e5f\u6709\u50cf koa-log4 \u8fd9\u6837\u7684 Koa \u4e2d\u95f4\u4ef6\u5bf9 log4js-node \u8fdb\u884c\u4e86\u5c01\u88c5\uff0c\u672c\u8282\u5b9e\u6218\u4e5f\u4f1a\u5b9e\u73b0\u4e00\u4e2a\u4e2d\u95f4\u4ef6\u6765\u5904\u7406\u65e5\u5fd7\u3002<\/p>\n<h3>log4js-node\u7684\u57fa\u672c\u4f7f\u7528<\/h3>\n<p>log4js-node \u662f\u7ecf\u8fc7\u5bf9 log4js \u6846\u67b6\u8fdb\u884c\u8f6c\u6362\u6765\u652f\u6301 node \u7684\uff0c\u5728\u5f00\u59cb\u5b9e\u6218\u4e4b\u524d\uff0c\u5148\u8010\u5fc3\u6765\u770b\u4e0b log4js \u7684\u57fa\u672c\u4f7f\u7528\u65b9\u5f0f\uff1a<\/p>\n<p><span class=\"token keyword\">const<\/span> log4js <span class=\"token operator\">=<\/span> <span class=\"token function\">require<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\\&#8221;log4js\\&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5f15\u5165 log4js<\/span><br \/>\n<span class=\"token keyword\">const<\/span> logger <span class=\"token operator\">=<\/span> log4js<span class=\"token punctuation\">.<\/span><span class=\"token function\">getLogger<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u83b7\u5f97 default category <\/span><br \/>\nlogger<span class=\"token punctuation\">.<\/span>level <span class=\"token operator\">=<\/span> <span class=\"token string\">\\&#8221;debug\\&#8221;<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8bbe\u7f6e level<\/span><br \/>\nlogger<span class=\"token punctuation\">.<\/span><span class=\"token function\">debug<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\\&#8221;\u8c03\u8bd5\u4fe1\u606f\\&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8f93\u51fa\u65e5\u5fd7<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u8f93\u51fa\uff1a [2020-10-31T16:02:24.527] [DEBUG] default &#8211; \u8c03\u8bd5\u4fe1\u606f<\/span><\/p>\n<p>\u9ed8\u8ba4\u7684\u60c5\u51b5\u4e0b\uff0cdefault \u7c7b\u522b\uff08category \uff09\u7684\u65e5\u5fd7 level \u662f\u8bbe\u7f6e\u4e3a OFF \u7684\uff0c\u4e0a\u9762\u7684\u4ee3\u7801\u5c06\u5176\u8bbe\u7f6e\u4e3a \u201cdebug\u201d\uff0c\u8fd9\u4f7f\u5f97\u8c03\u8bd5\u4fe1\u606f\u53ef\u4ee5\u8f93\u51fa\u5230 stdout\u3002<\/p>\n<p>\u518d\u6765\u770b\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<p><span class=\"token keyword\">const<\/span> log4js <span class=\"token operator\">=<\/span> <span class=\"token function\">require<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\\&#8221;log4js\\&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u5bf9\u65e5\u5fd7\u8fdb\u884c\u914d\u7f6e<\/span><br \/>\nlog4js<span class=\"token punctuation\">.<\/span><span class=\"token function\">configure<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<br \/>\n   <\/span><br \/>\n    <span class=\"token comment\">\/\/ \u6307\u5b9a\u8f93\u51fa\u6587\u4ef6\u7c7b\u578b\u548c\u6587\u4ef6\u540d<\/span><br \/>\n    appenders<span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<br \/>\n   <\/span> cheese<span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<br \/>\n   <\/span> type<span class=\"token operator\">:<\/span> <span class=\"token string\">\\&#8221;file\\&#8221;<\/span><span class=\"token punctuation\">,<\/span> filename<span class=\"token operator\">:<\/span> <span class=\"token string\">\\&#8221;cheese.log\\&#8221;<\/span> <span class=\"token punctuation\">}<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token comment\">\/\/ appenders \u6307\u5b9a\u4e86\u65e5\u5fd7\u8ffd\u52a0\u5230 cheese<\/span><br \/>\n    <span class=\"token comment\">\/\/ level \u8bbe\u7f6e\u4e3a error<\/span><br \/>\n    categories<span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<br \/>\n   <\/span> <span class=\"token keyword\">default<\/span><span class=\"token operator\">:<\/span> <span class=\"token punctuation\">{<br \/>\n   <\/span> appenders<span class=\"token operator\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string\">\\&#8221;cheese\\&#8221;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> level<span class=\"token operator\">:<\/span> <span class=\"token string\">\\&#8221;error\\&#8221;<\/span> <span class=\"token punctuation\">}<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">const<\/span> logger <span class=\"token operator\">=<\/span> log4js<span class=\"token punctuation\">.<\/span><span class=\"token function\">getLogger<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u83b7\u53d6\u5230 default \u5206\u7c7b<\/span><br \/>\nlogger<span class=\"token punctuation\">.<\/span><span class=\"token function\">trace<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\\&#8221;Entering cheese testing\\&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nlogger<span class=\"token punctuation\">.<\/span><span class=\"token function\">debug<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\\&#8221;Got cheese.\\&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nlogger<span class=\"token punctuation\">.<\/span><span class=\"token function\">info<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\\&#8221;Cheese is Comt\u00e9.\\&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nlogger<span class=\"token punctuation\">.<\/span><span class=\"token function\">warn<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\\&#8221;Cheese is quite smelly.\\&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\nlogger<span class=\"token punctuation\">.<\/span><span class=\"token function\">error<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\\&#8221;Cheese is too ripe!\\&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u4ece\u8fd9\u91cc\u5f00\u59cb\u5199\u5165\u65e5\u5fd7\u6587\u4ef6<\/span><br \/>\nlogger<span class=\"token punctuation\">.<\/span><span class=\"token function\">fatal<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\\&#8221;Cheese was breeding ground for listeria.\\&#8221;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u4ece\u4e0a\u9762\u7684\u8bbe\u7f6e\u770b\u5230 appenders \u6307\u5b9a\u4e86\u65e5\u5fd7\u8ffd\u52a0\u5230cheese\uff08\u4e5f\u5c31\u662fcheese.log\uff09\u91cc\u9762\u53bb\uff0clevel \u8bbe\u7f6e\u4e3a \u201cerror\u201d\uff0c\u4e5f\u5c31\u662f\u8bf4\u53ea\u6709\u65e5\u5fd7\u7b49\u7ea7\u5927\u4e8e \u201cerror\u201d \u7684\u624d\u4f1a\u6dfb\u52a0\u5230 log \u6587\u4ef6\u3002<\/p>\n<p>\u5f53\u6267\u884c\u4e86\u4e0a\u9762\u7684\u4ee3\u7801\uff0c\u53ef\u4ee5\u770b\u5230\u9879\u76ee\u76ee\u5f55\u91cc\u9762\u591a\u4e86\u4e00\u4e2a cheese.log \u6587\u4ef6\uff0c\u5185\u5982\u5982\u4e0b\uff1a<\/p>\n<p><span class=\"token punctuation\">[<\/span><span class=\"token number\">2020<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">10<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">31<\/span>T16<span class=\"token operator\">:<\/span><span class=\"token number\">26<\/span><span class=\"token operator\">:<\/span><span class=\"token number\">17.188<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token constant\">ERROR<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token keyword\">default<\/span> <span class=\"token operator\">&#8211;<\/span> Cheese is too ripe<span class=\"token operator\">!<\/span><br \/>\n<span class=\"token punctuation\">[<\/span><span class=\"token number\">2020<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">10<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">31<\/span>T16<span class=\"token operator\">:<\/span><span class=\"token number\">26<\/span><span class=\"token operator\">:<\/span><span class=\"token number\">17.194<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token constant\">FATAL<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token keyword\">default<\/span> <span class=\"token operator\">&#8211;<\/span> Cheese was breeding ground <span class=\"token keyword\">for<\/span> listeria<span class=\"token punctuation\">.<\/span><\/p>\n<p>\u6709\u5173 log4js-node \u7684\u66f4\u591a\u4f7f\u7528\u793a\u4f8b\u53ef\u4ee5\u53c2\u8003 example.js \u4ee5\u53ca examples \u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\u3002<\/p>\n<p>\u4e0b\u9762\u6765\u8fdb\u5165\u672c\u8282\u7684\u5b9e\u6218\u2026<\/p>\n<h3>\u5b89\u88c5 log4js<\/h3>\n<p>\u524d\u9762\u5bf9 log4js-node \u8fdb\u884c\u4e86\u7b80\u5355\u4ecb\u7ecd\uff0c\u73b0\u5728\u6765\u5728\u5e94\u7528\u91cc\u9762\u4f7f\u7528\uff0c\u9996\u5148\u5b89\u88c5 log4js\uff1a<\/p>\n<p>$ npm install log4js <span class=\"token operator\">&#8212;<\/span>save<\/p>\n<h3>\u8bbe\u7f6e log4js<\/h3>\n<p>\u6211\u4eec\u4fee\u6539 config\/config.js \uff0c\u6765\u5bf9 log4js \u7f16\u5199\u4e00\u4e9b\u914d\u7f6e\uff1a<\/p>\n<p><span class=\"token comment\">\/\/ config\/config.js<\/span><\/p>\n<p><span class=\"token keyword\">const<\/span> <span class=\"token constant\">CONFIG<\/span> <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">{<br \/>\n   <\/span><br \/>\n    <span class=\"token string\">\\&#8221;API_PREFIX\\&#8221;<\/span><span class=\"token operator\">:<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb1.1k\u6b21\uff0c\u70b9\u8d5e32\u6b21\uff0c\u6536\u85cf16\u6b21\u3002\u65e5\u5fd7\u5bf9\u4e8e Web \u540e\u53f0\u5e94\u7528\u6765\u8bf4\u662f\u5fc5\u8981\u7684\uff0cKoa \u539f\u751f\u5e76\u4e0d\u652f\u6301\u652f\u6301\u65e5\u5fd7\u6a21\u5757\uff0c\u6240\u5e78 GitHub \u5df2\u7ecf\u6709\u5f88\u591a\u4f18\u79c0\u7684 Node.js \u65e5\u5fd7\u6846\u67b6\uff0c\u8fd9\u8282\u5b9e\u6218\u5c06\u4f7f\u7528\u6765\u5904\u7406 Koa \u7684\u65e5\u5fd7\uff0c\u5f53\u7136\u4e5f\u6709\u50cf\u8fd9\u6837\u7684 Koa \u4e2d\u95f4\u4ef6\u5bf9 log4js-node \u8fdb\u884c\u4e86\u5c01\u88c5\uff0c\u672c\u8282\u5b9e\u6218\u4e5f\u4f1a\u5b9e\u73b0\u4e00\u4e2a\u4e2d\u95f4\u4ef6\u6765\u5904\u7406\u65e5\u5fd7\u3002_node \u65e5\u5fd7<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1282,43,44],"topic":[],"class_list":["post-32150","post","type-post","status-publish","format-standard","hentry","category-server","tag-nodejs","tag-43","tag-44"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>node\u670d\u52a1\u5668\u5b9e\u6218-\u65e5\u5fd7\u6301\u4e45\u5316 - 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