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GoのEchoでオリジン間リソース共有の問題を解決

Last updated at Posted at 2020-11-25

やりたいこと

フロント側の http://localhost:8080/ からバックエンド側の http://localhost:8080/ を呼び出したい
しかし以下のエラーがフロント側で出ていたので、これを解決したい

Access to XMLHttpRequest at 'http://localhost:8000' from origin 'http://localhost:8080' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

オリジン管理ソース共有に関してはこの記事では解説しませんが、 こちらの記事 がわかりやすかったです

環境情報

  • vue
    • 2.6
  • go
    • 1.15
    • echoをサーバーとして使用

解決方法

以下の設定を追加

e := echo.New()

// 以下を追加
e.Use(middleware.CORSWithConfig(middleware.CORSConfig{
    AllowOrigins: []string{"http://localhost:8080"},
    AllowMethods: []string{http.MethodGet, http.MethodPost, http.MethodPost, http.MethodDelete},
}))

無事フロント側からアクセスできる様になりました!

参考

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