{"id":462,"date":"2023-11-24T21:50:06","date_gmt":"2023-11-24T13:50:06","guid":{"rendered":"https:\/\/blog.xjfvps.top\/?p=462"},"modified":"2023-11-24T21:50:06","modified_gmt":"2023-11-24T13:50:06","slug":"golang%e7%9a%84errgroup%e7%ae%80%e5%8d%95%e7%94%a8%e6%b3%95%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/blog.fs.cloudns.biz\/index.php\/2023\/11\/24\/golang%e7%9a%84errgroup%e7%ae%80%e5%8d%95%e7%94%a8%e6%b3%95%e4%bb%8b%e7%bb%8d\/","title":{"rendered":"golang\u7684errgroup\u7b80\u5355\u7528\u6cd5\u4ecb\u7ecd"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><code>errgroup<\/code>\u662fGo\u8bed\u8a00\u6807\u51c6\u5e93<code>golang.org\/x\/sync\/errgroup<\/code>\u4e2d\u7684\u4e00\u4e2a\u5305\uff0c\u7528\u4e8e\u7ba1\u7406\u4e00\u7ec4goroutine\u7684\u9519\u8bef\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u4f18\u96c5\u7684\u65b9\u5f0f\u6765\u5e76\u53d1\u6267\u884c\u591a\u4e2a\u4efb\u52a1\uff0c\u5e76\u5728\u5176\u4e2d\u4efb\u4f55\u4e00\u4e2a\u4efb\u52a1\u8fd4\u56de\u9519\u8bef\u65f6\u53d6\u6d88\u6240\u6709\u4efb\u52a1\u7684\u6267\u884c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>errgroup<\/code>\u7c7b\u578b\u901a\u8fc7<code>errgroup.Group<\/code>\u7ed3\u6784\u4f53\u8868\u793a\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u4e2a<code>Wait<\/code>\u65b9\u6cd5\u548c\u4e00\u4e2a<code>Go<\/code>\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>Wait<\/code>\u65b9\u6cd5\u7528\u4e8e\u7b49\u5f85\u6240\u6709goroutine\u5b8c\u6210\u5e76\u8fd4\u56de\u9996\u4e2a\u9047\u5230\u7684\u9519\u8bef\u3002\u5982\u679c\u6ca1\u6709\u9519\u8bef\u53d1\u751f\uff0c<code>Wait<\/code>\u65b9\u6cd5\u5c06\u8fd4\u56de<code>nil<\/code>\uff1b\u5982\u679c\u6709\u9519\u8bef\u53d1\u751f\uff0c\u5b83\u5c06\u8fd4\u56de\u9996\u4e2a\u9047\u5230\u7684\u9519\u8bef\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>Go<\/code>\u65b9\u6cd5\u7528\u4e8e\u542f\u52a8\u4e00\u4e2a\u65b0\u7684goroutine\uff0c\u5e76\u5c06\u5176\u6dfb\u52a0\u5230<code>errgroup<\/code>\u4e2d\u3002\u5b83\u63a5\u53d7\u4e00\u4e2a\u51fd\u6570\u53c2\u6570\u4f5c\u4e3agoroutine\u7684\u4e3b\u4f53\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a<code>error<\/code>\u7c7b\u578b\u7684\u7ed3\u679c\u3002\u5982\u679c\u8be5\u51fd\u6570\u8fd4\u56de\u975e<code>nil<\/code>\u7684\u9519\u8bef\uff0c\u5219\u8be5\u9519\u8bef\u5c06\u88ab\u89c6\u4e3a\u6574\u4e2a<code>errgroup<\/code>\u7684\u9519\u8bef\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u793a\u4f8b\uff0c\u6f14\u793a\u4e86\u5982\u4f55\u4f7f\u7528<code>errgroup<\/code>\u6765\u5e76\u53d1\u6267\u884c\u591a\u4e2a\u4efb\u52a1\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"golang\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">package main\n\nimport (\n\t\"context\"\n\t\"fmt\"\n\t\"golang.org\/x\/sync\/errgroup\"\n\t\"net\/http\"\n)\n\nfunc main() {\n\tg := new(errgroup.Group)\n\n\t\/\/ \u542f\u52a8\u7b2c\u4e00\u4e2a\u4efb\u52a1\n\tg.Go(func() error {\n\t\tresp, err := http.Get(\"https:\/\/www.example.com\")\n\t\tif err != nil {\n\t\t\treturn err\n\t\t}\n\t\tdefer resp.Body.Close()\n\n\t\t\/\/ \u6267\u884c\u4efb\u52a1\u903b\u8f91...\n\n\t\treturn nil\n\t})\n\n\t\/\/ \u542f\u52a8\u7b2c\u4e8c\u4e2a\u4efb\u52a1\n\tg.Go(func() error {\n\t\tresp, err := http.Get(\"https:\/\/www.google.com\")\n\t\tif err != nil {\n\t\t\treturn err\n\t\t}\n\t\tdefer resp.Body.Close()\n\n\t\t\/\/ \u6267\u884c\u4efb\u52a1\u903b\u8f91...\n\n\t\treturn nil\n\t})\n\n\t\/\/ \u7b49\u5f85\u6240\u6709\u4efb\u52a1\u5b8c\u6210\n\tif err := g.Wait(); err != nil {\n\t\tfmt.Println(\"At least one task failed:\", err)\n\t} else {\n\t\tfmt.Println(\"All tasks completed successfully\")\n\t}\n}\n<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a<code>errgroup.Group<\/code>\u5b9e\u4f8b\uff0c\u5e76\u4f7f\u7528<code>Go<\/code>\u65b9\u6cd5\u542f\u52a8\u4e86\u4e24\u4e2a\u4efb\u52a1\u3002\u7136\u540e\uff0c\u6211\u4eec\u8c03\u7528<code>Wait<\/code>\u65b9\u6cd5\u7b49\u5f85\u6240\u6709\u4efb\u52a1\u5b8c\u6210\u3002\u5982\u679c\u4efb\u4f55\u4e00\u4e2a\u4efb\u52a1\u8fd4\u56de\u9519\u8bef\uff0c<code>Wait<\/code>\u65b9\u6cd5\u5c06\u8fd4\u56de\u8be5\u9519\u8bef\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528<code>errgroup<\/code>\u53ef\u4ee5\u7b80\u5316\u5e76\u53d1\u4efb\u52a1\u7ba1\u7406\u548c\u9519\u8bef\u5904\u7406\u7684\u8fc7\u7a0b\uff0c\u4f7f\u4ee3\u7801\u66f4\u52a0\u6e05\u6670\u548c\u53ef\u8bfb\u3002\u8bf7\u6ce8\u610f\uff0c<code>errgroup<\/code>\u5e76\u4e0d\u4f1a\u81ea\u52a8\u53d6\u6d88\u8fd8\u5728\u8fd0\u884c\u7684\u4efb\u52a1\uff0c\u800c\u662f\u5728\u9996\u4e2a\u9519\u8bef\u51fa\u73b0\u65f6\u505c\u6b62\u7ee7\u7eed\u6267\u884c\u5176\u4ed6\u4efb\u52a1\u3002\u56e0\u6b64\uff0c\u5728\u4f7f\u7528<code>errgroup<\/code>\u65f6\uff0c\u9700\u8981\u786e\u4fdd\u6bcf\u4e2a\u4efb\u52a1\u90fd\u80fd\u591f\u6b63\u786e\u5904\u7406\u4e0a\u4e0b\u6587\u7684\u53d6\u6d88\u4fe1\u53f7\uff0c\u4ee5\u4fbf\u53ca\u65f6\u7ec8\u6b62\u4efb\u52a1\u7684\u6267\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>errgroup\u662fGo\u8bed\u8a00\u6807\u51c6\u5e93golang.org\/x\/sync\/errgro &hellip; <a href=\"https:\/\/blog.fs.cloudns.biz\/index.php\/2023\/11\/24\/golang%e7%9a%84errgroup%e7%ae%80%e5%8d%95%e7%94%a8%e6%b3%95%e4%bb%8b%e7%bb%8d\/\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,8],"tags":[],"class_list":["post-462","post","type-post","status-publish","format-standard","hentry","category-golang","category-8"],"_links":{"self":[{"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/posts\/462","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/comments?post=462"}],"version-history":[{"count":1,"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/posts\/462\/revisions"}],"predecessor-version":[{"id":463,"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/posts\/462\/revisions\/463"}],"wp:attachment":[{"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/media?parent=462"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/categories?post=462"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.fs.cloudns.biz\/index.php\/wp-json\/wp\/v2\/tags?post=462"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}