{"id":75581,"date":"2024-03-01T15:12:59","date_gmt":"2024-03-01T07:12:59","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=75581"},"modified":"2024-03-01T15:13:15","modified_gmt":"2024-03-01T07:13:15","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8go%e8%af%ad%e8%a8%80%e4%b8%ad%e5%a4%84%e7%90%86%e9%94%99%e8%af%af","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/75581.html","title":{"rendered":"\u5982\u4f55\u5728Go\u8bed\u8a00\u4e2d\u5904\u7406\u9519\u8bef"},"content":{"rendered":"

\"\u5982\u4f55\u5728Go\u8bed\u8a00\u4e2d\u5904\u7406\u9519\u8bef\"<\/p>\n

### \u5982\u4f55\u5728Go\u8bed\u8a00\u4e2d\u5904\u7406\u9519\u8bef<\/p>\n

\u5728Go\u8bed\u8a00\u4e2d\u5904\u7406\u9519\u8bef\u7684\u65b9\u6cd5\u4e3b\u8981\u5305\u62ec\u4f7f\u7528`error`\u63a5\u53e3\u3001`panic`\u548c`recover`\u673a\u5236\u3001\u4ee5\u53ca\u81ea\u5b9a\u4e49\u9519\u8bef\u7c7b\u578b<\/strong>\u3002\u8fd9\u4e9b\u65b9\u6cd5\u80fd\u6709\u6548\u5730\u5e2e\u52a9\u5f00\u53d1\u8005\u8bc6\u522b\u548c\u5904\u7406\u8fd0\u884c\u4e2d\u7684\u5f02\u5e38\u60c5\u51b5\uff0c\u4fdd\u8bc1\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\u548c\u7a33\u5b9a\u6027\u3002\u4f7f\u7528`error`\u63a5\u53e3<\/strong>\u662fGo\u8bed\u8a00\u4e2d\u6700\u5e38\u89c1\u7684\u9519\u8bef\u5904\u7406\u65b9\u5f0f\uff0c\u5b83\u80fd\u591f\u8ba9\u51fd\u6570\u5728\u9047\u5230\u95ee\u9898\u65f6\u8fd4\u56de\u4e00\u4e2a`error`\u5bf9\u8c61\uff0c\u4ece\u800c\u8ba9\u8c03\u7528\u8005\u53ef\u4ee5\u6839\u636e\u8fd4\u56de\u7684\u9519\u8bef\u51b3\u5b9a\u540e\u7eed\u7684\u5904\u7406\u7b56\u7565\u3002\u8fd9\u79cd\u65b9\u5f0f\u7b80\u5355\u76f4\u63a5\uff0c\u6613\u4e8e\u7406\u89e3\u548c\u4f7f\u7528\uff0c\u662fGo\u8bed\u8a00\u9519\u8bef\u5904\u7406\u7684\u57fa\u7840\u3002<\/p>\n

#### \u4e00\u3001\u4f7f\u7528`ERROR`\u63a5\u53e3<\/p>\n

Go\u8bed\u8a00\u7684\u9519\u8bef\u5904\u7406\u673a\u5236\u4f9d\u8d56\u4e8e`error`\u63a5\u53e3\uff0c\u8fd9\u662f\u4e00\u79cd\u5185\u7f6e\u63a5\u53e3\u7c7b\u578b\uff0c\u7528\u4e8e\u8868\u793a\u51fd\u6570\u8fd0\u884c\u4e2d\u53ef\u80fd\u51fa\u73b0\u7684\u9519\u8bef\u60c5\u51b5\u3002`error`\u63a5\u53e3\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u5305\u542b\u4e00\u4e2a`Error()`\u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u63cf\u8ff0\u4e86\u53d1\u751f\u7684\u9519\u8bef\u3002<\/p>\n

– \u57fa\u672c\u4f7f\u7528\u65b9\u6cd5<\/strong>\uff1a\u5f53\u51fd\u6570\u9047\u5230\u9519\u8bef\u60c5\u51b5\u65f6\uff0c\u901a\u5e38\u8fd4\u56de\u4e00\u4e2a`error`\u5bf9\u8c61\uff0c\u5982\u679c\u6267\u884c\u6210\u529f\uff0c\u5219\u8fd4\u56de`nil`\u3002\u8c03\u7528\u65b9\u9700\u8981\u68c0\u67e5\u8fd4\u56de\u7684`error`\u662f\u5426\u4e3a`nil`\u6765\u5224\u65ad\u51fd\u6570\u662f\u5426\u6210\u529f\u6267\u884c\u3002<\/p>\n

– \u81ea\u5b9a\u4e49\u9519\u8bef<\/strong>\uff1a\u901a\u8fc7`errors.New`\u548c`fmt.Errorf`\u51fd\u6570\u53ef\u4ee5\u521b\u5efa\u57fa\u672c\u7684\u9519\u8bef\u4fe1\u606f\uff0c\u800c\u901a\u8fc7\u5b9e\u73b0`error`\u63a5\u53e3\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u521b\u5efa\u66f4\u52a0\u4e30\u5bcc\u548c\u5177\u4f53\u7684\u9519\u8bef\u7c7b\u578b\uff0c\u4ee5\u4fbf\u4e8e\u4f20\u8fbe\u66f4\u591a\u9519\u8bef\u4e0a\u4e0b\u6587\u4fe1\u606f\u3002<\/p>\n

#### \u4e8c\u3001`PANIC`\u548c`RECOVER`\u673a\u5236<\/p>\n

\u9664\u4e86\u901a\u8fc7`error`\u63a5\u53e3\u8fd4\u56de\u9519\u8bef\u4e4b\u5916\uff0cGo\u8bed\u8a00\u8fd8\u63d0\u4f9b\u4e86`panic`\u548c`recover`\u673a\u5236\u6765\u5904\u7406\u7a0b\u5e8f\u4e2d\u7684\u5f02\u5e38\u60c5\u51b5\u3002`panic`\u53ef\u4ee5\u5728\u9047\u5230\u4e0d\u53ef\u6062\u590d\u7684\u9519\u8bef\u65f6\u4e2d\u65ad\u5f53\u524d\u51fd\u6570\u7684\u6267\u884c\uff0c\u800c`recover`\u5219\u53ef\u4ee5\u6355\u83b7\u5230`panic`\u629b\u51fa\u7684\u9519\u8bef\uff0c\u4ece\u800c\u5b9e\u73b0\u9519\u8bef\u7684\u6062\u590d\u3002<\/p>\n

– `panic`\u7684\u4f7f\u7528\u573a\u666f<\/strong>\uff1a\u901a\u5e38\u5728\u9047\u5230\u4e25\u91cd\u9519\u8bef\uff0c\u5982\u6570\u7ec4\u8d8a\u754c\u3001\u7a7a\u6307\u9488\u5f15\u7528\u7b49\uff0c\u6216\u8005\u662f\u4e0d\u6ee1\u8db3\u7a0b\u5e8f\u8fd0\u884c\u524d\u63d0\u6761\u4ef6\u65f6\u4f7f\u7528\u3002<\/p>\n

– \u6062\u590d\u9519\u8bef`recover`<\/strong>\uff1a`recover`\u662f\u4e00\u4e2a\u5185\u7f6e\u51fd\u6570\uff0c\u7528\u4e8e\u91cd\u65b0\u83b7\u5f97`panic`\u629b\u51fa\u7684\u63a7\u5236\u6743\uff0c\u9632\u6b62\u7a0b\u5e8f\u5d29\u6e83\u3002\u901a\u5e38\u5728`defer`\u8bed\u53e5\u4e2d\u4f7f\u7528`recover`\u6765\u6355\u83b7\u548c\u5904\u7406\u5f02\u5e38\u3002<\/p>\n

#### \u4e09\u3001\u81ea\u5b9a\u4e49\u9519\u8bef\u7c7b\u578b<\/p>\n

\u5728Go\u8bed\u8a00\u4e2d\uff0c\u901a\u8fc7\u5b9e\u73b0`error`\u63a5\u53e3\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u521b\u5efa\u81ea\u5b9a\u4e49\u7684\u9519\u8bef\u7c7b\u578b\u3002\u8fd9\u5141\u8bb8\u5728\u9519\u8bef\u5bf9\u8c61\u4e2d\u5305\u542b\u66f4\u591a\u7684\u4e0a\u4e0b\u6587\u4fe1\u606f\uff0c\u6bd4\u5982\u9519\u8bef\u53d1\u751f\u7684\u65f6\u95f4\u3001\u4f4d\u7f6e\u3001\u539f\u56e0\u7b49\uff0c\u4ece\u800c\u4e3a\u9519\u8bef\u5904\u7406\u63d0\u4f9b\u66f4\u591a\u7684\u7075\u6d3b\u6027\u548c\u51c6\u786e\u6027\u3002<\/p>\n

– \u521b\u5efa\u81ea\u5b9a\u4e49\u9519\u8bef<\/strong>\uff1a\u81ea\u5b9a\u4e49\u9519\u8bef\u7c7b\u578b\u901a\u5e38\u901a\u8fc7\u7ed3\u6784\u4f53\u5b9e\u73b0`error`\u63a5\u53e3\u7684`Error()`\u65b9\u6cd5\u6765\u521b\u5efa\u3002<\/p>\n

– \u4f7f\u7528\u81ea\u5b9a\u4e49\u9519\u8bef<\/strong>\uff1a\u81ea\u5b9a\u4e49\u9519\u8bef\u7c7b\u578b\u9664\u4e86\u80fd\u63d0\u4f9b\u57fa\u672c\u7684\u9519\u8bef\u63cf\u8ff0\u5916\uff0c\u8fd8\u53ef\u4ee5\u5305\u542b\u66f4\u591a\u7684\u65b9\u6cd5\uff0c\u4ee5\u63d0\u4f9b\u5173\u4e8e\u9519\u8bef\u7684\u989d\u5916\u4fe1\u606f\u6216\u8fdb\u884c\u9519\u8bef\u6062\u590d\u7684\u64cd\u4f5c\u3002<\/p>\n

#### \u56db\u3001\u6700\u4f73\u5b9e\u8df5\u548c\u7b56\u7565<\/p>\n

\u6b63\u786e\u5730\u5904\u7406\u9519\u8bef\u662f\u4fdd\u8bc1Go\u7a0b\u5e8f\u7a33\u5b9a\u8fd0\u884c\u7684\u5173\u952e\u3002\u5f00\u53d1\u8005\u5e94\u8be5\u9075\u5faa\u4e00\u4e9b\u6700\u4f73\u5b9e\u8df5\u548c\u7b56\u7565\uff0c\u6bd4\u5982\u53ca\u65f6\u68c0\u67e5\u53ef\u80fd\u8fd4\u56de\u9519\u8bef\u7684\u51fd\u6570\u8c03\u7528\u3001\u4f7f\u7528\u9002\u5f53\u7684\u9519\u8bef\u5904\u7406\u673a\u5236\u3001\u4ee5\u53ca\u901a\u8fc7\u65e5\u5fd7\u8bb0\u5f55\u9519\u8bef\u4fe1\u606f\u7b49\u3002<\/p>\n

– \u9519\u8bef\u4f20\u64ad<\/strong>\uff1a\u5728\u591a\u5c42\u8c03\u7528\u6808\u4e2d\uff0c\u5408\u7406\u5730\u4f20\u64ad\u9519\u8bef\uff0c\u65e2\u4e0d\u5e94\u8be5\u8fc7\u65e9\u5730\u5ffd\u7565\u9519\u8bef\uff0c\u4e5f\u4e0d\u5e94\u8be5\u65e0\u8c13\u5730\u589e\u52a0\u9519\u8bef\u5904\u7406\u7684\u590d\u6742\u5ea6\u3002<\/p>\n

– \u9519\u8bef\u5904\u7406\u7b56\u7565<\/strong>\uff1a\u6839\u636e\u5e94\u7528\u573a\u666f\u548c\u9519\u8bef\u7684\u4e25\u91cd\u6027\uff0c\u9009\u62e9\u6700\u5408\u9002\u7684\u9519\u8bef\u5904\u7406\u7b56\u7565\uff0c\u53ef\u4ee5\u662f\u7acb\u5373\u8fd4\u56de\u9519\u8bef\u3001\u5c1d\u8bd5\u6062\u590d\u6267\u884c\u3001\u6216\u662f\u8bb0\u5f55\u9519\u8bef\u540e\u7ee7\u7eed\u6267\u884c\u3002<\/p>\n

\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

\u5982\u4f55\u4f7f\u7528Go\u8bed\u8a00\u4e2d\u7684defer\u8bed\u53e5\u6765\u5ef6\u8fdf\u6267\u884c\u51fd\u6570\uff1f<\/strong><\/p>\n

\u5728Go\u8bed\u8a00\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528defer\u8bed\u53e5\u6765\u5ef6\u8fdf\u6267\u884c\u51fd\u6570\u3002defer\u8bed\u53e5\u4f1a\u5c06\u51fd\u6570\u63a8\u8fdf\u5230\u5916\u5c42\u51fd\u6570\u8fd4\u56de\u4e4b\u540e\u518d\u6267\u884c\uff0c\u8fd9\u5728\u5904\u7406\u9519\u8bef\u65f6\u975e\u5e38\u6709\u7528\u3002\u901a\u8fc7defer\u8bed\u53e5\uff0c\u6211\u4eec\u53ef\u4ee5\u786e\u4fdd\u5373\u4f7f\u53d1\u751f\u9519\u8bef\uff0c\u8d44\u6e90\u4e5f\u4f1a\u88ab\u6b63\u786e\u91ca\u653e\uff0c\u4ece\u800c\u907f\u514d\u5185\u5b58\u6cc4\u6f0f\u7b49\u95ee\u9898\u3002<\/p>\n

Go\u8bed\u8a00\u4e2d\u7684panic\u548crecover\u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f<\/strong><\/p>\n

\u5728Go\u8bed\u8a00\u4e2d\uff0cpanic\u7528\u4e8e\u5f15\u53d1\u8fd0\u884c\u65f6\u9519\u8bef\uff0c\u5f53\u7a0b\u5e8f\u9047\u5230\u65e0\u6cd5\u5904\u7406\u7684\u9519\u8bef\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7panic\u4e2d\u65ad\u7a0b\u5e8f\u7684\u6267\u884c\u3002\u800crecover\u7528\u4e8e\u4ecepanic\u4e2d\u6062\u590d\uff0c\u53ef\u4ee5\u6355\u83b7panic\u5f15\u53d1\u7684\u9519\u8bef\uff0c\u5e76\u8fdb\u884c\u5904\u7406\uff0c\u4ee5\u907f\u514d\u7a0b\u5e8f\u5d29\u6e83\u3002\u4f7f\u7528panic\u548crecover\u53ef\u4ee5\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u589e\u5f3a\u7a0b\u5e8f\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n

Go\u8bed\u8a00\u4e2d\u5982\u4f55\u5b9e\u73b0\u9519\u8bef\u7684\u5904\u7406\u673a\u5236\uff1f<\/strong><\/p>\n

\u5728Go\u8bed\u8a00\u4e2d\uff0c\u901a\u5e38\u901a\u8fc7\u5728\u51fd\u6570\u6700\u540e\u8fd4\u56de\u4e00\u4e2aerror\u7c7b\u578b\u7684\u503c\u6765\u8868\u793a\u51fd\u6570\u6267\u884c\u7684\u6210\u529f\u6216\u5931\u8d25\u3002\u8c03\u7528\u65b9\u53ef\u4ee5\u901a\u8fc7\u5224\u65aderror\u7684\u53d6\u503c\u6765\u5904\u7406\u51fd\u6570\u6267\u884c\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u53d1\u751f\u7684\u9519\u8bef\u3002\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u914d\u5408defer\u3001panic\u548crecover\u7b49\u8bed\u53e5\u6765\u589e\u5f3a\u9519\u8bef\u5904\u7406\u7684\u80fd\u529b\uff0c\u4ece\u800c\u4fdd\u8bc1\u7a0b\u5e8f\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"### \u5982\u4f55\u5728Go\u8bed\u8a00\u4e2d\u5904\u7406\u9519\u8bef \u5728Go\u8bed\u8a00\u4e2d\u5904\u7406\u9519\u8bef\u7684\u65b9\u6cd5\u4e3b\u8981\u5305\u62ec\u4f7f\u7528`error`\u63a5\u53e3\u3001`panic`\u548c` […]","protected":false},"author":1,"featured_media":75584,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/75581"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=75581"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/75581\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/75584"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=75581"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=75581"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=75581"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}