{"id":207061,"date":"2025-07-08T09:27:11","date_gmt":"2025-07-08T01:27:11","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207061\/"},"modified":"2025-07-08T09:27:11","modified_gmt":"2025-07-08T01:27:11","slug":"%e5%bd%93-xerrors-errorf-%e8%be%93%e5%87%ba%e9%94%99%e8%af%af%e6%97%b6%ef%bc%8c%e6%9c%89%e4%bb%80%e4%b9%88%e6%96%b9%e6%b3%95%e5%8f%af%e4%bb%a5%e8%ae%be%e7%bd%ae-xerrors-caller1-%e5%90%97%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207061\/","title":{"rendered":"\u5f53 xerrors.Errorf() \u8f93\u51fa\u9519\u8bef\u65f6\uff0c\u6709\u4ec0\u4e48\u65b9\u6cd5\u53ef\u4ee5\u8bbe\u7f6e xerrors.Caller(1) \u5417\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5f53 xerrors.Errorf() \u8f93\u51fa\u9519\u8bef\u65f6\uff0c\u6709\u4ec0\u4e48\u65b9\u6cd5\u53ef\u4ee5\u8bbe\u7f6e xerrors.Caller(1) \u5417\uff1f<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-19 19:39:19<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4eca\u5929\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u5f53 xerrors.Errorf() \u8f93\u51fa\u9519\u8bef\u65f6\uff0c\u6709\u4ec0\u4e48\u65b9\u6cd5\u53ef\u4ee5\u8bbe\u7f6e xerrors.Caller(1) \u5417\uff1f\u300b<\/span>\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u662f\u6b63\u5728\u5b66\u4e60Golang<\/span>\u6216\u8005\u5df2\u7ecf\u662f\u5927\u4f6c\u7ea7\u522b\u4e86\uff0c\u90fd\u975e\u5e38\u6b22\u8fce\u4e5f\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u7ed9\u6211\u5efa\u8bae\u8bc4\u8bba\u54c8~\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff01<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u8fd0\u884c\u4ee5\u4e0b\u4ee3\u7801\uff0c\u5c06\u8f93\u51fa\u5806\u6808\u8ddf\u8e2a\uff0c\u5176\u4e2d\u5305\u542b fmt.print(...)<\/code> \u7684\u884c\u53f7\u3002\u4f46\u6211\u60f3\u8f93\u51falogerror(err)<\/code>\u8fd9\u4e00\u884c\u3002\u6211\u60f3\u6211\u9700\u8981\u8c03\u7528 xerrors.caller(1)<\/code> \u6765\u505a\u5230\u8fd9\u4e00\u70b9\uff0c\u4f46\u6211\u4e0d\u77e5\u9053\u5982\u4f55\u505a\u3002\u5e2e\u52a9\u6211\u3002<\/p>\n

import (\n    \"fmt\"\n    \"io\/ioutil\"\n\n    \"golang.org\/x\/xerrors\"\n)\n\nfunc main() {\n    _, err := ioutil.ReadFile(\"\")\n    if err != nil {\n        logError(err)\n        return\n    }\n}\n\nfunc logError(err error) {\n    fmt.Printf(\"%+v\", xerrors.Errorf(\": %w\", err))\n}<\/pre>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u6211\u8ba4\u4e3a\u4f60\u60f3\u8981\u7684\u662f\uff1a<\/p>\n
import (\n    \"fmt\"\n    \"io\/ioutil\"\n\n    \"golang.org\/x\/xerrors\"\n)\n\nfunc doWhatever() error {\n    _, err := ioutil.ReadFile(\"\")\n    if err != nil {\n        return xerrors.Errorf(\"failed doing whatever: %w\", err)\n    }\n    return nil\n}\n\nfunc main() {\n    err := doWhatever()\n    if err != nil {\n        logError(err)\n        return\n    }\n}\n\nfunc logError(err error) {\n    fmt.Printf(\"%+v\", err)\n}<\/pre>\n
\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u5f53 xerrors.Errorf() \u8f93\u51fa\u9519\u8bef\u65f6\uff0c\u6709\u4ec0\u4e48\u65b9\u6cd5\u53ef\u4ee5\u8bbe\u7f6e xerrors.Caller(1) \u5417\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/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-207061","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207061","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=207061"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207061\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207061"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207061"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207061"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}