dongyuan2652 2019-04-01 02:58
浏览 766


I'm using VueJS for an app I am building. The server I have is written in Golang and has been set to accept CORS. In the app, in one of my components, searchBar, I have set it to fetch some data before it is created.

var searchBar = {
    prop: [...],
    data: function() {
        return { ... };
    beforeCreate: function() {
        var searchBar = this;

            url: '/graphql',
            method: 'post',
            data: {
                'query': '{courses{id, name}}'
        .then(function(response) {
    methods: { ... },
    template: `...`

Axios works perfectly here. It gets the data I need. searchBar has a button which causes it to emit an event which is then picked up by another component, searchResults. Upon receiving the event, searchResults will fetch some data.

var searchResults = {
    data: function() {
        return { ... }
    mounted: function() {
        var sr = this;

        this.$bus.$on('poll-server', function(payload) {
            var requestData = {
                url: '/graphql',
                method: 'post',
                data: { ... },

                 .then(function(response) {
    template: `...`

Note that my Axios request call is now inside a callback function. When this call is performed, I receive a CORS error:

Access to XMLHttpRequest at '' from origin '' 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.

My server is located at, with the client in Here is the content of the OPTIONS request of the second request call.

Second call's OPTIONS method request headers.

For comparison, here is the request header of the first request call (that works!).

First call's OPTIONS method request headers.

I have already set my Golang server to support CORS via go-chi/cors. This is how set it up.

router := chi.NewRouter()
// Enable CORS.
cors := cors.New(cors.Options{
    AllowedOrigins:   []string{"*"},
    AllowedMethods:   []string{"POST", "OPTIONS"},
    AllowedHeaders:   []string{"Accept", "Authorization", "Content-Type", "X-CSRF-Token"},
    ExposedHeaders:   []string{"Link"},
    AllowCredentials: true,
    MaxAge:           300,


router.Post("/graphql", gqlServer.GraphQL())

return router, db

What is causing the error I am having and how can it be solved?

  • 写回答



      相关推荐 更多相似问题


      • ¥15 这段有什么bug 为什么总报错
      • ¥15 关于#php#根据url判断选择加载模板应该如何解决?会的速来捡钱!
      • ¥15 Intel Realsense深度相机(D415/D435)拍摄梯子获取梯子点云
      • ¥50 unity使用easyar录屏更换视频保存路径
      • ¥15 CECGameSession::OutputLinkSevError(iRetCode=4) LINK超时
      • ¥20 出错 textread (第 124 行) [varargout{1:nlhs}]=dataread('file',varargin{:}); %#ok<REMFF1>
      • ¥15 tensor flow目标检测环境配置问题
      • ¥15 数据库float型转换精度问题
      • ¥15 运行您代码时出现报错,如何解决?(标签-回归|关键词-无法识别)
      • ¥50 android service弹出dialog,showdialog就出错,如何解决?