{"id":205666,"date":"2025-06-12T10:44:16","date_gmt":"2025-06-12T02:44:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/205666\/"},"modified":"2025-06-12T10:44:16","modified_gmt":"2025-06-12T02:44:16","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-golang-%e4%b8%ad%e6%8d%95%e8%8e%b7%e5%8c%bf%e5%90%8d%e5%87%bd%e6%95%b0%e4%b8%ad%e7%9a%84%e5%bc%82%e5%b8%b8%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/205666\/","title":{"rendered":"\u5982\u4f55\u5728 Golang \u4e2d\u6355\u83b7\u533f\u540d\u51fd\u6570\u4e2d\u7684\u5f02\u5e38\uff1f"},"content":{"rendered":"<p>\u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300a\u5982\u4f55\u5728 GOLANG \u4e2d\u6355\u83b7\u533f\u540d\u51fd\u6570\u4e2d\u7684\u5f02\u5e38\uff1f\u300b\uff0c\u4e3b\u8981\u5305\u62ec\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002,\u5728 GOLANG \u4e2d\u6355\u83b7\u533f\u540d\u51fd\u6570\u4e2d\u7684\u5f02\u5e38\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528 defer \u548c recover\uff1a\u5229\u7528 defer \u5728\u51fd\u6570\u8fd4\u56de\u524d\u6267\u884c\u8bed\u53e5\uff0c\u914d\u5408 recover \u4ece\u6050\u614c\u7684\u51fd\u6570\u8c03\u7528\u4e2d\u6062\u590d\u6267\u884c\u3002,<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729940665671cccb9d7b96.jpg\" class=\"aligncenter\">,\u5728 GOLANG \u4e2d\uff0c\u533f\u540d\u51fd\u6570\u662f\u672a\u9644\u6709\u540d\u79f0\u7684\u51fd\u6570\uff0c\u53ef\u4f5c\u4e3a\u5176\u4ed6\u51fd\u6570\u7684\u8f93\u5165\u3001\u8f93\u51fa\u6216\u95ed\u5305\u7684\u4e00\u90e8\u5206\u3002\u867d\u7136\u533f\u540d\u51fd\u6570\u975e\u5e38\u65b9\u4fbf\uff0c\u4f46\u6355\u83b7\u5176\u4e2d\u53d1\u751f\u7684\u5f02\u5e38\u5374\u5e76\u975e\u6613\u4e8b\u3002,\u8981\u6355\u83b7\u533f\u540d\u51fd\u6570\u4e2d\u7684\u5f02\u5e38\uff0c\u53ef\u4ee5\u4f7f\u7528<br \/>\n<code>defer<\/code> \u548c<br \/>\n<code>recover<\/code> \u673a\u5236\u3002<br \/>\n<code>defer<\/code> \u4f1a\u5728\u51fd\u6570\u8fd4\u56de\u524d\u6267\u884c\u9644\u52a0\u7684\u8bed\u53e5\uff0c\u800c<br \/>\n<code>recover<\/code> \u4f1a\u4ece\u5f15\u8d77\u6050\u614c\u7684\u51fd\u6570\u8c03\u7528\u4e2d\u6062\u590d\u6267\u884c\u3002,<br \/>\n<strong>\u4ee3\u7801\u793a\u4f8b\uff1a<\/strong>,\u5728 HTTP \u5904\u7406\u7a0b\u5e8f\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u6b64\u6280\u672f\u4ece\u5f02\u5e38\u4e2d\u6062\u590d\uff0c\u5e76\u8fd4\u56de\u9002\u5f53\u7684\u54cd\u5e94\uff0c\u800c\u4e0d\u662f\u8ba9\u670d\u52a1\u5668\u5d29\u6e83\u3002,<br \/>\n<strong>\u4ee3\u7801\u793a\u4f8b\uff1a<\/strong>,\u6587\u4e2d\u5173\u4e8egolang,\u5f02\u5e38\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300a\u5982\u4f55\u5728 GOLANG \u4e2d\u6355\u83b7\u533f\u540d\u51fd\u6570\u4e2d\u7684\u5f02\u5e38\uff1f\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002,\u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300a\u5982\u4f55\u5728 GOLANG \u4e2d\u6355\u83b7\u533f\u540d\u51fd\u6570\u4e2d\u7684\u5f02\u5e38\uff1f\u300b\uff0c\u4e3b\u8981\u5305\u62ec\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002,<br \/>\n<b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span>  <span>&gt;<\/span>  <span>&gt;<\/span>  <span>&gt;<\/span> <span>\u5982\u4f55\u5728 GOLANG \u4e2d\u6355\u83b7\u533f\u540d\u51fd\u6570\u4e2d\u7684\u5f02\u5e38\uff1f<\/span><\/p>\n<h1>\u5982\u4f55\u5728 GOLANG \u4e2d\u6355\u83b7\u533f\u540d\u51fd\u6570\u4e2d\u7684\u5f02\u5e38\uff1f<\/h1>\n<p><span>2024-10-26 19:04:40<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300a\u5982\u4f55\u5728 GOLANG \u4e2d\u6355\u83b7\u533f\u540d\u51fd\u6570\u4e2d\u7684\u5f02\u5e38\uff1f\u300b\uff0c\u4e3b\u8981\u5305\u62ec\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002<\/p>\n<p>\u5728 GOLANG \u4e2d\u6355\u83b7\u533f\u540d\u51fd\u6570\u4e2d\u7684\u5f02\u5e38\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528 defer \u548c recover\uff1a\u5229\u7528 defer \u5728\u51fd\u6570\u8fd4\u56de\u524d\u6267\u884c\u8bed\u53e5\uff0c\u914d\u5408 recover \u4ece\u6050\u614c\u7684\u51fd\u6570\u8c03\u7528\u4e2d\u6062\u590d\u6267\u884c\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729940665671cccb9d7b96.jpg\" class=\"aligncenter\"><\/p>\n<h2>\u5982\u4f55\u5728 GOLANG \u4e2d\u6355\u83b7\u533f\u540d\u51fd\u6570\u4e2d\u7684\u5f02\u5e38\uff1f<\/h2>\n<p>\u5728 GOLANG \u4e2d\uff0c\u533f\u540d\u51fd\u6570\u662f\u672a\u9644\u6709\u540d\u79f0\u7684\u51fd\u6570\uff0c\u53ef\u4f5c\u4e3a\u5176\u4ed6\u51fd\u6570\u7684\u8f93\u5165\u3001\u8f93\u51fa\u6216\u95ed\u5305\u7684\u4e00\u90e8\u5206\u3002\u867d\u7136\u533f\u540d\u51fd\u6570\u975e\u5e38\u65b9\u4fbf\uff0c\u4f46\u6355\u83b7\u5176\u4e2d\u53d1\u751f\u7684\u5f02\u5e38\u5374\u5e76\u975e\u6613\u4e8b\u3002<\/p>\n<h3>\u4f7f\u7528 <code>defer<\/code> \u548c <code>recover<\/code><\/h3>\n<p>\u8981\u6355\u83b7\u533f\u540d\u51fd\u6570\u4e2d\u7684\u5f02\u5e38\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>defer<\/code> \u548c <code>recover<\/code> \u673a\u5236\u3002<code>defer<\/code> \u4f1a\u5728\u51fd\u6570\u8fd4\u56de\u524d\u6267\u884c\u9644\u52a0\u7684\u8bed\u53e5\uff0c\u800c <code>recover<\/code> \u4f1a\u4ece\u5f15\u8d77\u6050\u614c\u7684\u51fd\u6570\u8c03\u7528\u4e2d\u6062\u590d\u6267\u884c\u3002<\/p>\n<p><strong>\u4ee3\u7801\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>import (\n    \"fmt\"\n    \"runtime\"\n)\n\nfunc tryCatch(f func()) {\n    defer func() {\n        if r := recover(); r != nil {\n            fmt.Printf(\"Caught panic: %v\\n\", r)\n            for entry := runtime.CallersFrames(2); !entry.Next(); {\n                fmt.Printf(\"%v: %s [%s:%d]\\n\", entry.Function, entry.Args[0], entry.File, entry.Line)\n            }\n        }\n    }()\n    f()\n}\n\nfunc main() {\n    tryCatch(func() { panic(\"oh no!\") })\n    fmt.Println(\"Exiting...\")\n}<\/pre>\n<h3>\u5b9e\u6218\u6848\u4f8b\uff1a\u4ece HTTP \u5904\u7406\u7a0b\u5e8f\u6062\u590d<\/h3>\n<p>\u5728 HTTP \u5904\u7406\u7a0b\u5e8f\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u6b64\u6280\u672f\u4ece\u5f02\u5e38\u4e2d\u6062\u590d\uff0c\u5e76\u8fd4\u56de\u9002\u5f53\u7684\u54cd\u5e94\uff0c\u800c\u4e0d\u662f\u8ba9\u670d\u52a1\u5668\u5d29\u6e83\u3002<\/p>\n<p><strong>\u4ee3\u7801\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>import (\n    \"fmt\"\n    \"net\/http\"\n)\n\nfunc handlePanic(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {\n    defer func() {\n        if r := recover(); r != nil {\n            http.Error(w, \"Internal Server Error\", http.StatusInternalServerError)\n            fmt.Printf(\"Caught panic: %v\\n\", r)\n        }\n    }()\n    next(w, r)\n}<\/pre>\n<p>\u6587\u4e2d\u5173\u4e8egolang,\u5f02\u5e38\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300a\u5982\u4f55\u5728 GOLANG \u4e2d\u6355\u83b7\u533f\u540d\u51fd\u6570\u4e2d\u7684\u5f02\u5e38\uff1f\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u5bb9\u5668\u5316\u5982\u4f55\u5f71\u54cdJava\u51fd\u6570\u5185\u5b58\u7ba1\u7406\uff1f\n <\/dd>\n<\/dl>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   Java\u51fd\u6570\u91cd\u8f7d\u5b9e\u73b0\u51fd\u6570\u591a\u6001\u7684\u4f18\u52a3\u52bf\u5bf9\u6bd4\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300a\u5982\u4f55\u5728 GO&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-205666","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205666","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=205666"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205666\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=205666"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=205666"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=205666"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}