{"id":207050,"date":"2025-07-08T08:01:21","date_gmt":"2025-07-08T00:01:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207050\/"},"modified":"2025-07-08T08:01:21","modified_gmt":"2025-07-08T00:01:21","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88-cors-%e9%94%99%e8%af%af%e6%b2%a1%e6%9c%89%e5%be%97%e5%88%b0%e8%a7%a3%e5%86%b3%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207050\/","title":{"rendered":"\u4e3a\u4ec0\u4e48 cors \u9519\u8bef\u6ca1\u6709\u5f97\u5230\u89e3\u51b3\uff1f"},"content":{"rendered":"

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

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u4e3a\u4ec0\u4e48 cors \u9519\u8bef\u6ca1\u6709\u5f97\u5230\u89e3\u51b3\uff1f<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-19 18:06:35<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4f60\u5728\u5b66\u4e60Golang<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\u5417\uff1f\u672c\u6587\u300a\u4e3a\u4ec0\u4e48 cors \u9519\u8bef\u6ca1\u6709\u5f97\u5230\u89e3\u51b3\uff1f\u300b<\/span>\uff0c\u4e3b\u8981\u4ecb\u7ecd\u7684\u5185\u5bb9\u5c31\u6d89\u53ca\u5230<\/span>\uff0c\u5982\u679c\u4f60\u60f3\u63d0\u5347\u81ea\u5df1\u7684\u5f00\u53d1\u80fd\u529b\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5927\u5bb6\u8981\u77e5\u9053\u7f16\u7a0b\u7406\u8bba\u57fa\u7840\u548c\u5b9e\u6218\u64cd\u4f5c\u90fd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u54e6\uff01<\/p>\n

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

golang \u4e2d\u5141\u8bb8\u4f7f\u7528 cors\uff0c\u4ee3\u7801\u5982\u4e0b<\/p>\n

func register() *echo.echo {\n    e := echo.new()\n    e.get(\"\/swagger\/*\", echoswagger.wraphandler) \/\/ swagger \ub4f1\ub85d\n    validator.registervalidator(e)               \/\/ \uc720\ud6a8\uc131\uac80\uc0ac \ub4f1\ub85d\n    e.use(middleware.cors())  \/\/ cors \ub4f1\ub85d\n......\n\npackage middleware\n\nimport (\n    \"github.com\/labstack\/echo\/v4\"\n    \"github.com\/labstack\/echo\/v4\/middleware\"\n)\n\nfunc cors() echo.middlewarefunc {\n    return middleware.corswithconfig(middleware.corsconfig{\n        alloworigins:  []string{\"http:\/\/localhost:3000\"},\n        allowmethods:  []string{echo.get, echo.put, echo.post, echo.delete},\n        allowheaders:  []string{echo.headerorigin, echo.headercontenttype, echo.headeraccept},\n        exposeheaders: []string{echo.headercontentlength},\n    })\n}<\/pre>\n
\u4f46\u662f\uff0c\u5373\u4f7f\u6211\u5728react\u9879\u76ee\u4e2d\u4ece(localhost:3000)\u53d1\u9001\u8bf7\u6c42\uff0ccors\u9519\u8bef\u4e5f\u4e0d\u4f1a\u505c\u6b62\u3002<\/p>\n
func (serverInfo *ServerInfo) ServerStart() {\n\n    var databaseSet database.DatabaseInterface = &mysql.MysqlInfo{} \/\/ Database\n    databaseSet.InitDatabase()                                      \/\/ \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub97c \ucd08\uae30\ud654\ud569\ub2c8\ub2e4\n    hosts := map[string]*Host{}                                     \/\/ Hosts\n\n    \/\/ API\n    hosts[fmt.Sprintf(\"%v.%v:%v\", \"api.v1\", os.Getenv(envkey.SERVER_URL), os.Getenv(envkey.PORT))] = &Host{apiV1Route.Register()}\n\n    \/\/ Server\n    e := echo.New()\n    e.Use(middleware.Logger()) \/\/ \ub85c\uac70\ub4f1\ub85d\n\n    e.Any(\"\/*\", func(c echo.Context) (err error) {\n        req := c.Request()\n        res := c.Response()\n        host := hosts[req.Host]\n\n        if host == nil {\n            err = echo.ErrNotFound\n        } else {\n            host.Echo.ServeHTTP(res, req)\n        }\n        return\n    })\n\n    \/\/ e.Logger.Fatal(e.StartTLS(fmt.Sprintf(\":%v\", os.Getenv(envkey.PORT)), \"housewhale.com+3.pem\", \"housewhale.com+3-key.pem\"))\n    e.Logger.Fatal(e.Start(fmt.Sprintf(\":%v\", os.Getenv(envkey.PORT))))\n}<\/pre>\n
\u8fd9\u4e2a\u95ee\u9898\u6211\u5df2\u7ecf\u56f0\u6270\u4e86\u597d\u51e0\u5929\u4e86\uff0c\u5982\u4f55\u89e3\u51b3\uff1f\u6211\u5df2\u7ecf\u5c1d\u8bd5\u4e86\u5728\u624b\u518c\u6216\u8c37\u6b4c\u4e2d\u627e\u5230\u7684\u6240\u6709\u5185\u5bb9\uff0c\u4f46 cors \u9519\u8bef\u5e76\u6ca1\u6709\u6d88\u5931\u3002<\/p>\n
 <\/p>\n
\u6b63\u786e\u7b54\u6848<\/h2>\n
 <\/p>\n
\u6709\u4e00\u4e2a\u9519\u8bef\uff0c\u6ca1\u6709\u9644\u52a0\u9519\u8bef\uff0c\u6211\u9644\u52a0\u4e86\u5982\u4e0b\u9519\u8bef\uff0c\u5f53\u65f6\u95ee\u9898\u5c31\u89e3\u51b3\u4e86\u3002<\/p>\n
access to fetch at 'https:\/\/api.v1.localhsot:8081\/auth\/retoken' from origin 'http:\/\/localhost:3000' has been blocked by cors policy: response to preflight request doesn't pass access control check: no 'access-control-allow-origin' header is present on the requested resource. if an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with cors disabled.<\/pre>\n
\u670d\u52a1\u5668\u7aef\u672a\u6b63\u786e\u5141\u8bb8cors\uff0c\u8bf7\u914d\u7f6e\u670d\u52a1\u5668\u7aef\u4ee5\u5339\u914d\u8bf7\u6c42<\/p>\n
\u4f8b\u5982\uff0c\u5982\u679c\u5ba2\u6237\u7aef\u5411\u6807\u5934\u53d1\u9001\u6388\u6743\u6570\u636e\uff0c\u5219\u670d\u52a1\u5668\u4e5f\u5141\u8bb8\u5728\u6807\u5934\u4e2d\u8fdb\u884c\u6388\u6743\u3002\u50cf\u8fd9\u6837\u8bbe\u7f6e\u5fc5\u8981\u7684\u8bf7\u6c42<\/p>\n
package middleware\n\nimport (\n    \"github.com\/labstack\/echo\/v4\"\n    \"github.com\/labstack\/echo\/v4\/middleware\"\n)\n\nfunc Cors() echo.MiddlewareFunc {\n    return middleware.CORSWithConfig(middleware.CORSConfig{\n        AllowOrigins:     []string{\"http:\/\/localhost:3000\"},\n        AllowMethods:     []string{echo.GET, echo.PUT, echo.POST, echo.DELETE},\n        AllowHeaders:     []string{echo.HeaderOrigin, echo.HeaderContentType, echo.HeaderAccept, echo.HeaderAuthorization},\n        ExposeHeaders:    []string{echo.HeaderContentLength, echo.HeaderSetCookie},\n        AllowCredentials: true, \/\/ Add this line to allow credentials\n    })\n}<\/pre>\n
\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u4e3a\u4ec0\u4e48 cors \u9519\u8bef\u6ca1\u6709\u5f97\u5230\u89e3\u51b3\uff1f\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591aGolang\u77e5\u8bc6\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-207050","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207050","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=207050"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207050\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207050"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207050"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207050"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}