{"id":57650,"date":"2024-10-10T20:00:18","date_gmt":"2024-10-10T12:00:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/57650\/"},"modified":"2024-10-10T20:00:18","modified_gmt":"2024-10-10T12:00:18","slug":"go%e6%95%99%e7%a8%8b-go-%e8%aa%9e%e8%a8%80-error-%e6%8e%a5%e5%8f%a3%ef%bc%9a%e8%bf%94%e5%9b%9e%e9%8c%af%e8%aa%a4%e4%bf%a1%e6%81%af","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/57650\/","title":{"rendered":"GO\u6559\u7a0b: Go \u8a9e\u8a00 error \u63a5\u53e3\uff1a\u8fd4\u56de\u932f\u8aa4\u4fe1\u606f"},"content":{"rendered":"

GO\u6559\u7a0b: Go \u8a9e\u8a00 error \u63a5\u53e3\uff1a\u8fd4\u56de\u932f\u8aa4\u4fe1\u606f<\/h1>\n

\u5728 Go \u8a9e\u8a00\u4e2d\uff0c\u932f\u8aa4\u8655\u7406\u662f\u4e00\u500b\u91cd\u8981\u7684\u4e3b\u984c\u3002Go \u8a9e\u8a00\u7684\u8a2d\u8a08\u54f2\u5b78\u5f37\u8abf\u7c21\u55ae\u6027\u548c\u6e05\u6670\u6027\uff0c\u56e0\u6b64\u5b83\u7684\u932f\u8aa4\u8655\u7406\u6a5f\u5236\u4e5f\u76f8\u5c0d\u7c21\u55ae\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e Go \u8a9e\u8a00\u4e2d\u7684 error \u63a5\u53e3\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u4f86\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u8fd4\u56de\u548c\u8655\u7406\u932f\u8aa4\u4fe1\u606f\u3002<\/p>\n

Go \u8a9e\u8a00\u4e2d\u7684 error \u63a5\u53e3<\/h2>\n

\u5728 Go \u8a9e\u8a00\u4e2d\uff0c\u932f\u8aa4\u662f\u7531\u5167\u5efa\u7684 error<\/code> \u63a5\u53e3\u8868\u793a\u7684\u3002\u9019\u500b\u63a5\u53e3\u7684\u5b9a\u7fa9\u975e\u5e38\u7c21\u55ae\uff1a<\/p>\n

type error interface {\n    Error() string\n}<\/code><\/pre>\n
\u9019\u610f\u5473\u8457\u4efb\u4f55\u5be6\u73fe\u4e86 Error()<\/code> \u65b9\u6cd5\u7684\u985e\u578b\u90fd\u53ef\u4ee5\u88ab\u8996\u70ba\u932f\u8aa4\u3002\u9019\u7a2e\u8a2d\u8a08\u4f7f\u5f97\u958b\u767c\u8005\u53ef\u4ee5\u81ea\u5b9a\u7fa9\u932f\u8aa4\u985e\u578b\uff0c\u4e26\u63d0\u4f9b\u66f4\u5177\u9ad4\u7684\u932f\u8aa4\u4fe1\u606f\u3002<\/p>\n
\u8fd4\u56de\u932f\u8aa4\u4fe1\u606f\u7684\u57fa\u672c\u7bc4\u4f8b<\/h2>\n
\u5728 Go \u8a9e\u8a00\u4e2d\uff0c\u51fd\u6578\u901a\u5e38\u6703\u8fd4\u56de\u4e00\u500b\u932f\u8aa4\u985e\u578b\u7684\u503c\uff0c\u9019\u6a23\u8abf\u7528\u8005\u5c31\u53ef\u4ee5\u6aa2\u67e5\u662f\u5426\u767c\u751f\u4e86\u932f\u8aa4\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\uff1a<\/p>\n
package main\n\nimport (\n    \"errors\"\n    \"fmt\"\n)\n\nfunc divide(a, b float64) (float64, error) {\n    if b == 0 {\n        return 0, errors.New(\"\u9664\u6578\u4e0d\u80fd\u70ba\u96f6\")\n    }\n    return a \/ b, nil\n}\n\nfunc main() {\n    result, err := divide(10, 0)\n    if err != nil {\n        fmt.Println(\"\u932f\u8aa4:\", err)\n    } else {\n        fmt.Println(\"\u7d50\u679c:\", result)\n    }\n}<\/code><\/pre>\n
\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0cdivide<\/code> \u51fd\u6578\u6703\u6aa2\u67e5\u9664\u6578\u662f\u5426\u70ba\u96f6\u3002\u5982\u679c\u662f\uff0c\u5b83\u6703\u8fd4\u56de\u4e00\u500b\u65b0\u7684\u932f\u8aa4\uff0c\u5426\u5247\u8fd4\u56de\u8a08\u7b97\u7d50\u679c\u548c nil<\/code> \u932f\u8aa4\u3002<\/p>\n
\u81ea\u5b9a\u7fa9\u932f\u8aa4\u985e\u578b<\/h2>\n
\u9664\u4e86\u4f7f\u7528\u5167\u5efa\u7684\u932f\u8aa4\u985e\u578b\uff0c\u958b\u767c\u8005\u9084\u53ef\u4ee5\u5275\u5efa\u81ea\u5b9a\u7fa9\u7684\u932f\u8aa4\u985e\u578b\uff0c\u4ee5\u63d0\u4f9b\u66f4\u5177\u9ad4\u7684\u932f\u8aa4\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u81ea\u5b9a\u7fa9\u932f\u8aa4\u985e\u578b\u7684\u7bc4\u4f8b\uff1a<\/p>\n
package main\n\nimport (\n    \"fmt\"\n)\n\ntype MyError struct {\n    Code    int\n    Message string\n}\n\nfunc (e *MyError) Error() string {\n    return fmt.Sprintf(\"\u932f\u8aa4\u4ee3\u78bc: %d, \u932f\u8aa4\u4fe1\u606f: %s\", e.Code, e.Message)\n}\n\nfunc doSomething() error {\n    return &MyError{Code: 404, Message: \"\u8cc7\u6e90\u672a\u627e\u5230\"}\n}\n\nfunc main() {\n    err := doSomething()\n    if err != nil {\n        fmt.Println(\"\u767c\u751f\u932f\u8aa4:\", err)\n    }\n}<\/code><\/pre>\n
\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba MyError<\/code> \u7684\u7d50\u69cb\u9ad4\uff0c\u4e26\u5be6\u73fe\u4e86 Error()<\/code> \u65b9\u6cd5\u3002\u9019\u6a23\uff0c\u6211\u5011\u5c31\u53ef\u4ee5\u8fd4\u56de\u66f4\u5177\u9ad4\u7684\u932f\u8aa4\u4fe1\u606f\uff0c\u65b9\u4fbf\u8abf\u8a66\u548c\u65e5\u8a8c\u8a18\u9304\u3002<\/p>\n
\u932f\u8aa4\u5305\u7684\u4f7f\u7528<\/h2>\n
Go \u8a9e\u8a00\u9084\u63d0\u4f9b\u4e86\u4e00\u4e9b\u6a19\u6e96\u5eab\u4f86\u5e6b\u52a9\u8655\u7406\u932f\u8aa4\u3002\u4f8b\u5982\uff0cfmt.Errorf<\/code> \u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u683c\u5f0f\u5316\u932f\u8aa4\u4fe1\u606f\uff1a<\/p>\n
package main\n\nimport (\n    \"fmt\"\n)\n\nfunc doSomething() error {\n    return fmt.Errorf(\"\u767c\u751f\u4e86\u932f\u8aa4: %s\", \"\u7121\u6cd5\u9023\u63a5\u5230\u4f3a\u670d\u5668\")\n}\n\nfunc main() {\n    err := doSomething()\n    if err != nil {\n        fmt.Println(\"\u932f\u8aa4:\", err)\n    }\n}<\/code><\/pre>\n
\u9019\u6a23\u7684\u505a\u6cd5\u4f7f\u5f97\u932f\u8aa4\u4fe1\u606f\u66f4\u52a0\u9748\u6d3b\u548c\u53ef\u8b80\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
Go \u8a9e\u8a00\u7684\u932f\u8aa4\u8655\u7406\u6a5f\u5236\u96d6\u7136\u7c21\u55ae\uff0c\u4f46\u537b\u975e\u5e38\u5f37\u5927\u3002\u901a\u904e\u4f7f\u7528 error<\/code> \u63a5\u53e3\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u8fd4\u56de\u548c\u8655\u7406\u932f\u8aa4\u4fe1\u606f\u3002\u7121\u8ad6\u662f\u4f7f\u7528\u5167\u5efa\u7684\u932f\u8aa4\u985e\u578b\uff0c\u9084\u662f\u81ea\u5b9a\u7fa9\u932f\u8aa4\u985e\u578b\uff0cGo \u8a9e\u8a00\u90fd\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u65b9\u5f0f\u4f86\u8655\u7406\u932f\u8aa4\u3002\u9019\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u66f4\u597d\u5730\u7ba1\u7406\u61c9\u7528\u7a0b\u5e8f\u4e2d\u7684\u7570\u5e38\u60c5\u6cc1\uff0c\u5f9e\u800c\u63d0\u9ad8\u4ee3\u78bc\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc \u9999\u6e2fVPS<\/a> \u670d\u52d9\u6709\u8208\u8da3\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f\u500b\u4eba\u9084\u662f\u4f01\u696d\u7528\u6236\uff0c\u6211\u5011\u7684 \u4f3a\u670d\u5668<\/a> \u89e3\u6c7a\u65b9\u6848\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3 Go \u8a9e\u8a00\u4e2d\u7684 error \u63a5\u53e3\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u8fd4\u56de\u548c\u8655\u7406\u932f\u8aa4\u4fe1\u606f\uff0c\u63d0\u5347\u4f60\u7684\u7de8\u7a0b\u6280\u80fd\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-57650","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57650","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=57650"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57650\/revisions"}],"predecessor-version":[{"id":57651,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/57650\/revisions\/57651"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=57650"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=57650"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=57650"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}