MeteorJS中的'Access-Control-Allow-Origin'错误

我正在使用Laravel Lumen为我的MeteorJS应用程序创建一个API。这是imports\api\tasks.jsMeteorJS中的'Access-Control-Allow-Origin'错误

... 
import { HTTP } from 'meteor/http'; 
import { WebApp } from 'meteor/webapp'; 

if (Meteor.is_client) { 

    // Calling our Meteor server's function 
    // and simply storing data into current session 
    Meteor.call('fetchDataFromUrl', function (error, response) { 
     Session.set('external_server_data', response) 
    }); 


    // Providing meteor data for template (it renders on data received) 
    Template.data.server_data = function() { 
     return Session.get('external_server_data'); 
    }; 

} 

if (Meteor.is_server) { 

    Meteor.methods({ 
     // Declaring a method 
     retrieve_doc_types: function() { 
      this.unblock(); 
      return Meteor.http.get(api_url); 
     } 
    }); 

} 

Meteor.methods({ 

    'tasks.insert'(make, model, year) { 
    check(make, String); 
    check(model, String); 
    check(year, String); 

    if (! Meteor.userId()) { 
     throw new Meteor.Error('not-authorized'); 
    } 

    HTTP.call("POST", "http://localhost:8000/api/v1/car", 
      {data: {"make":make, "model":model, "year":year}}, 
     function (error, result) { 

      if (!error) { 
       console.log(result); 
      } else{ 

       console.log("http post error"); 
      }; 
     }); 
    }, 

....

我的代码INMŸmeteorJS但是当我得到这个错误：

XMLHttpRequest cannot load http://localhost:8000/api/v1/car. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:3000' is therefore not allowed access. The response had HTTP status code 405. 
tasks.js:81 http post error

做的人有一个想法？我是新与MeteorJS

来源

2017-03-23 gadss

试试这个在您的服务器/ main.js

WebApp.rawConnectHandlers.use(function(req, res, next) { 
    res.setHeader("Access-Control-Allow-Origin", "*"); 
    return next(); 
});

来源

2017-03-24 02:35:34 mutdmour

我仍然有错误 – gadss

你使用nginx吗？ – mutdmour

我正在使用我的笔记本电脑，我使用XAMPP，Windows 10操作系统 – gadss

-1

有人想答案，但我没有得到它。你试试你的运气。 https://codexample.org/questions/9358/no-access-control-allow-origin-error-in-meteor-app.c

 Try package - simple:json-routes and put following code at serverside startup. 
    // Enable cross origin requests for all endpoints 
    JsonRoutes.setResponseHeaders({ 
     "Cache-Control": "no-store", 
     "Pragma": "no-cache", 
     "Access-Control-Allow-Origin": "*", 
     "Access-Control-Allow-Methods": "GET, PUT, POST, DELETE, OPTIONS", 
     "Access-Control-Allow-Headers": "Content-Type, Authorization, X-Requested-With" 
    });

来源

2017-05-24 10:22:28 Rashmi

你在哪里调用该方法？该方法称为tasks.insert，但您提供的代码仅调用fetchDataFromUrl方法。

这里有一些想法。

检查您的客户端呼叫是异步使用的。从Metor HTTP文档：On the client, this function must be used asynchronously by passing a callback. Note that some browsers first send an OPTIONS request before sending your request (in order to determine CORS headers).
我的CORS问题也在我的项目之一，我最终只使用HTTP库服务器端。您可以通过使用Meteor.isServer来实现HTTP呼叫。

来源

2017-05-24 19:29:16

MeteorJS中的'Access-Control-Allow-Origin'错误

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