{"id":200180,"date":"2020-11-15T15:02:29","date_gmt":"2020-11-15T07:02:29","guid":{"rendered":"http:\/\/4563.org\/?p=200180"},"modified":"2020-11-24T21:10:51","modified_gmt":"2020-11-24T13:10:51","slug":"%e8%af%b4%e8%af%b4-golang-%e5%bc%82%e5%b8%b8%e6%8d%95%e8%8e%b7","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=200180","title":{"rendered":"\u8bf4\u8bf4 Golang \u5f02\u5e38\u6355\u83b7"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  \u8bf4\u8bf4 Golang \u5f02\u5e38\u6355\u83b7               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : haicoderibai <\/span>  <span><i><\/i> 1<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\"> <\/p>\n<blockquote>\n<p>\u539f\u6587\u5730\u5740\uff1a<strong>\u55e8\u5ba2\u7f51<\/strong><\/p>\n<\/blockquote>\n<h1>Golang panic recover \u8be6\u89e3<\/h1>\n<p> <\/p>\n<h2>Golang panic recover \u8be6\u89e3\u6559\u7a0b<\/h2>\n<p><strong>Go \u8bed\u8a00<\/strong> \u4e2d\u7684 <strong>panic<\/strong> \u7684\u4f5c\u7528\u5c31\u662f\u629b\u51fa\u4e00\u6761\u9519\u8bef\u4fe1\u606f\uff0c\u4ece\u5b83\u7684\u53c2\u6570\u7c7b\u578b\u53ef\u4ee5\u770b\u5230\u5b83\u53ef\u4ee5\u629b\u51fa\u4efb\u610f\u7c7b\u578b\u7684\u9519\u8bef\u4fe1\u606f\u3002\u5728\u51fd\u6570\u6267\u884c\u8fc7\u7a0b\u4e2d\u7684\u67d0\u5904\u8c03\u7528\u4e86 panic\uff0c\u5219\u7acb\u5373\u629b\u51fa\u4e00\u4e2a\u9519\u8bef\u4fe1\u606f\uff0c\u540c\u65f6\u51fd\u6570\u7684\u6b63\u5e38\u6267\u884c\u6d41\u7a0b\u7ec8\u6b62\uff0c\u4f46\u662f\u8be5\u51fd\u6570\u4e2d panic \u4e4b\u524d\u5b9a\u4e49\u7684 defer \u8bed\u53e5\u5c06\u88ab\u4f9d\u6b21\u6267\u884c\u3002\u4e4b\u540e\u8be5 <strong>goroutine<\/strong> \u7acb\u5373\u505c\u6b62\u6267\u884c\u3002<\/p>\n<p>recover() \u7528\u4e8e\u5c06 panic \u7684\u4fe1\u606f\u6355\u6349\u3002recover \u5fc5\u987b\u5b9a\u4e49\u5728 panic \u4e4b\u524d\u7684 defer \u8bed\u53e5\u4e2d\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5f53 panic \u88ab\u89e6\u53d1\u65f6\uff0c\u8be5 goroutine \u4e0d\u4f1a\u7b80\u5355\u7684\u7ec8\u6b62\uff0c\u800c\u662f\u4f1a\u6267\u884c\u5728\u5b83\u4e4b\u524d\u5b9a\u4e49\u7684 defer \u8bed\u53e5\u3002<\/p>\n<h2>Golang panic recover \u8be6\u89e3<\/h2>\n<h3>\u8bed\u6cd5<\/h3>\n<pre><code>defer func() {  if err := recover(); err != nil {   fmt.Println(\"Panic recover, Err =\", err, \"Stack =\", string(debug.Stack()))  } }() <\/code><\/pre>\n<h3>\u8bf4\u660e<\/h3>\n<p>\u5f53\u53d1\u751f\u5f02\u5e38\u65f6\uff0c\u6211\u4eec\u4f7f\u7528\u4e86 recover \u6062\u590d\uff0c\u5e76\u6253\u5370\u4e86\u9519\u8bef\u4fe1\u606f\u548c\u5806\u6808\u4fe1\u606f\u3002<\/p>\n<h2>panic \u65e0 recover<\/h2>\n<h3>\u8bf4\u660e<\/h3>\n<p>\u5982\u679c\u5728\u4e00\u4e2a\u51fd\u6570\u4e2d\uff0c\u9047\u5230\u4e86 panic\uff0c\u5e76\u4e14\u6ca1\u6709 recover\uff0c\u90a3\u4e48\u7a0b\u5e8f\u76f4\u63a5\u7ec8\u6b62<\/p>\n<h3>\u6848\u4f8b<\/h3>\n<pre><code>package main  import (  \"fmt\" )  func main() {  fmt.Println(\"\u55e8\u5ba2\u7f51(www.haicoder.net)\")   var hMap map[string]string  hMap[\"name\"] = \"haicoder\" } <\/code><\/pre>\n<p>\u6b64\u65f6\uff0c\u6211\u4eec\u8fd0\u884c\u7a0b\u5e8f\uff0c\u63a7\u5236\u53f0\u8f93\u51fa\u5982\u4e0b\uff1a<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/11\/17_Go\u8bed\u8a00panic-recover.png\" alt=\"\u8bf4\u8bf4 Golang \u5f02\u5e38\u6355\u83b7\" \/><\/p>\n<p>\u6211\u4eec\u7ed9\u4e00\u4e2a\u7a7a <strong>map<\/strong> \u8d4b\u503c\uff0c\u7ed3\u679c\u7a0b\u5e8f\u53d1\u751f\u4e86 panic\uff0c\u56e0\u4e3a\uff0c\u6211\u4eec\u6ca1\u6709 recover\uff0c\u56e0\u6b64\uff0c\u7a0b\u5e8f\u5f02\u5e38\u7ec8\u6b62\u4e86\u3002<\/p>\n<h2>panic \u6709 recover<\/h2>\n<h3>\u8bf4\u660e<\/h3>\n<p>\u5982\u679c\u5728\u4e00\u4e2a\u51fd\u6570\u4e2d\uff0c\u9047\u5230\u4e86 panic\uff0c\u5e76\u4e14\u6709 recover\uff0c\u90a3\u4e48\u7a0b\u5e8f\u4e0d\u4f1a\u7ec8\u6b62<\/p>\n<h3>\u6848\u4f8b<\/h3>\n<pre><code>package main  import (  \"fmt\" )  func main() {  fmt.Println(\"\u55e8\u5ba2\u7f51(www.haicoder.net)\")   defer func() {   if err := recover(); err != nil {    fmt.Println(\"Panic recover, Err =\", err)   }  }()   var hMap map[string]string  hMap[\"name\"] = \"haicoder\"   fmt.Println(\"Over\") } <\/code><\/pre>\n<p>\u6b64\u65f6\uff0c\u6211\u4eec\u8fd0\u884c\u7a0b\u5e8f\uff0c\u63a7\u5236\u53f0\u8f93\u51fa\u5982\u4e0b\uff1a<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/11\/18_Go\u8bed\u8a00panic-recover.png\" alt=\"\u8bf4\u8bf4 Golang \u5f02\u5e38\u6355\u83b7\" \/><\/p>\n<p>\u8fd9\u6b21\uff0c\u5728\u51fd\u6570\u91cc\u9762\uff0c\u6211\u4eec\u4f7f\u7528\u4e86 recover \u6355\u83b7\u9519\u8bef\uff0c\u6211\u4eec\u770b\u5230\uff0c\u6b64\u65f6\u7a0b\u5e8f\u4e0d\u518d\u62a5\u9519\u4e86\uff0c\u5e76\u4e14\uff0c\u5f02\u5e38\u4e0b\u9762\u7684\u4ee3\u7801\u4e0d\u4f1a\u518d\u7ee7\u7eed\u6267\u884c\u4e86\u3002<\/p>\n<h2>\u5b50\u51fd\u6570 panic \u6709 recover<\/h2>\n<h3>\u8bf4\u660e<\/h3>\n<p>\u5b50\u51fd\u6570 panic\uff0c\u5e76\u4e14\u6709 recover\uff0c\u4e0d\u5f71\u54cd\u4e3b\u51fd\u6570\u7684\u6267\u884c<\/p>\n<h3>\u6848\u4f8b<\/h3>\n<pre><code>package main  import (  \"fmt\" )  func main() {  fmt.Println(\"\u55e8\u5ba2\u7f51(www.haicoder.net)\")   fmt.Println(fun1(10, 5))  fmt.Println(fun1(10, 0))  fmt.Println(fun1(10, 2))   fmt.Println(\"Over\") }  func fun1(a, b int)int{  defer func() {   if err := recover(); err != nil {    fmt.Println(\"Panic recover, Err =\", err)   }  }()   return a \/ b } <\/code><\/pre>\n<p>\u6b64\u65f6\uff0c\u6211\u4eec\u8fd0\u884c\u7a0b\u5e8f\uff0c\u63a7\u5236\u53f0\u8f93\u51fa\u5982\u4e0b\uff1a<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/11\/19_Go\u8bed\u8a00panic-recover.png\" alt=\"\u8bf4\u8bf4 Golang \u5f02\u5e38\u6355\u83b7\" \/><\/p>\n<p>\u6211\u4eec\u5728\u5b50\u51fd\u6570\u91cc\u9762\uff0c\u53d1\u751f\u4e86 panic\uff0c\u5e76\u4e14\u4f7f\u7528\u4e86 recover\uff0c\u6b64\u65f6\u5728\u8c03\u7528\u51fd\u6570\u91cc\u9762\uff0c\u8c03\u7528\u5b50\u51fd\u6570\uff0c\u5e76\u4e0d\u5f71\u54cd\u4e3b\u51fd\u6570\u7684\u6267\u884c\u3002<\/p>\n<h2>\u5b50\u51fd\u6570 panic \u4e3b\u51fd\u6570 recover<\/h2>\n<h3>\u8bf4\u660e<\/h3>\n<p>\u5b50\u51fd\u6570 panic\uff0c\u4e3b\u51fd\u6570 recover\uff0c\u7a0b\u5e8f\u4e0d\u4f1a\u7ec8\u6b62\u6267\u884c<\/p>\n<h3>\u6848\u4f8b<\/h3>\n<pre><code>package main  import (  \"fmt\" )  func main() {  fmt.Println(\"\u55e8\u5ba2\u7f51(www.haicoder.net)\")   defer func() {   if err := recover(); err != nil {    fmt.Println(\"Panic recover, Err =\", err)   }  }()   fmt.Println(fun1(10, 5))  fmt.Println(fun1(10, 0))  fmt.Println(fun1(10, 2))   fmt.Println(\"Over\") }  func fun1(a, b int)int{  return a \/ b } <\/code><\/pre>\n<p>\u6b64\u65f6\uff0c\u6211\u4eec\u8fd0\u884c\u7a0b\u5e8f\uff0c\u63a7\u5236\u53f0\u8f93\u51fa\u5982\u4e0b\uff1a<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/11\/20_Go\u8bed\u8a00panic-recover.png\" alt=\"\u8bf4\u8bf4 Golang \u5f02\u5e38\u6355\u83b7\" \/><\/p>\n<p>\u6211\u4eec\u5728\u5b50\u51fd\u6570\u91cc\u9762\uff0c\u53d1\u751f\u4e86 panic\uff0c\u5e76\u4e14\u5728\u4e3b\u51fd\u6570\u4f7f\u7528\u4e86 recover\uff0c\u6b64\u65f6\u7a0b\u5e8f\u4e0d\u4f1a\u7ec8\u6b62\u6267\u884c\u3002<\/p>\n<h2>\u5b50\u534f\u7a0b panic \u4e3b\u51fd\u6570 recover<\/h2>\n<h3>\u8bf4\u660e<\/h3>\n<p>\u5b50\u534f\u7a0b panic\uff0c\u4e3b\u51fd\u6570 recover\uff0c\u7a0b\u5e8f\u4f1a\u7ec8\u6b62\u6267\u884c<\/p>\n<h3>\u6848\u4f8b<\/h3>\n<pre><code>package main  import (  \"fmt\"  \"time\" )  func main() {  fmt.Println(\"\u55e8\u5ba2\u7f51(www.haicoder.net)\")   defer func() {   if err := recover(); err != nil {    fmt.Println(\"Panic recover, Err =\", err)   }  }()   go fun1(10, 5)  go fun1(10, 0)  go fun1(10, 2)   fmt.Println(\"Over\")  time.Sleep(10*time.Second) }  func fun1(a, b int)int{  return a \/ b } <\/code><\/pre>\n<p>\u6b64\u65f6\uff0c\u6211\u4eec\u8fd0\u884c\u7a0b\u5e8f\uff0c\u63a7\u5236\u53f0\u8f93\u51fa\u5982\u4e0b\uff1a<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/11\/21_Go\u8bed\u8a00panic-recover.png\" alt=\"\u8bf4\u8bf4 Golang \u5f02\u5e38\u6355\u83b7\" \/><\/p>\n<p>\u6211\u4eec\u5728\u5b50\u534f\u7a0b\u91cc\u9762\uff0c\u53d1\u751f\u4e86 panic\uff0c\u5e76\u4e14\u5728\u4e3b\u51fd\u6570\u4f7f\u7528\u4e86 recover\uff0c\u6b64\u65f6\u7a0b\u5e8f\u4f1a\u7ec8\u6b62\u6267\u884c\u3002<\/p>\n<h2>\u5b50\u534f\u7a0b panic \u5b50\u534f\u7a0b recover<\/h2>\n<h3>\u8bf4\u660e<\/h3>\n<p>\u5b50\u534f\u7a0b panic\uff0c\u5b50\u534f\u7a0b recover\uff0c\u4e0d\u5f71\u54cd\u4e3b\u51fd\u6570\u6267\u884c<\/p>\n<h3>\u6848\u4f8b<\/h3>\n<pre><code>package main  import (  \"fmt\"  \"time\" )  func main() {  fmt.Println(\"\u55e8\u5ba2\u7f51(www.haicoder.net)\")   go fun1(10, 5)  go fun1(10, 0)  go fun1(10, 2)   fmt.Println(\"Over\")  time.Sleep(10*time.Second) }  func fun1(a, b int)int{  defer func() {   if err := recover(); err != nil {    fmt.Println(\"Panic recover, Err =\", err)   }  }()   return a \/ b } <\/code><\/pre>\n<p>\u6b64\u65f6\uff0c\u6211\u4eec\u8fd0\u884c\u7a0b\u5e8f\uff0c\u63a7\u5236\u53f0\u8f93\u51fa\u5982\u4e0b\uff1a<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/11\/22_Go\u8bed\u8a00panic-recover.png\" alt=\"\u8bf4\u8bf4 Golang \u5f02\u5e38\u6355\u83b7\" \/><\/p>\n<p>\u5728\u4e3b\u51fd\u6570\u91cc\u9762\uff0c\u5b50\u534f\u7a0b\u53d1\u751f\u4e86 panic\uff0c\u5e76\u4e14\u4f7f\u7528\u4e86 recover\uff0c\u4e0d\u5f71\u54cd\u4e3b\u51fd\u6570\u7684\u7ee7\u7eed\u6267\u884c\u3002<\/p>\n<h2>Golang panic recover \u603b\u7ed3<\/h2>\n<p>golang \u4e2d\u7684 defer \u7684\u4f7f\u7528\u53ef\u4ee5\u603b\u7ed3\u4e3a\uff0c\u5982\u679c panic \u548c recover \u53d1\u751f\u5728\u540c\u4e00\u4e2a\u534f\u7a0b\uff0c\u90a3\u4e48 recover \u662f\u53ef\u4ee5\u6355\u83b7\u7684\uff0c\u5982\u679c panic \u548c recover \u53d1\u751f\u5728\u4e0d\u540c\u7684\u534f\u7a0b\uff0c\u90a3\u4e48 recover \u662f\u4e0d\u53ef\u4ee5\u6355\u83b7\u7684\u3002<\/p>\n<p>\u539f\u6587\u5730\u5740\uff1a<strong>\u55e8\u5ba2\u7f51<\/strong><\/p>\n<p>\u66f4\u591a\u6587\u7ae0\uff0c\u53ef\u4ee5\u5173\u6ce8\u4e0b\u65b9\u516c\u4f17\u53f7\uff1a<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2020\/11\/20201124_5fbd06283713f.png\" alt=\"\u8bf4\u8bf4 Golang \u5f02\u5e38\u6355\u83b7\" \/><\/p>\n<\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>0<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>\u8bf4\u8bf4 Golang \u5f02\u5e38\u6355\u83b7 \u8cc7\u6df1&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/200180"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=200180"}],"version-history":[{"count":1,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/200180\/revisions"}],"predecessor-version":[{"id":200187,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/200180\/revisions\/200187"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=200180"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=200180"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=200180"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}