大家好我试图向我的meteor应用程序发送ajax请求并以某种方式处理它。这是我的代码。
import { WebApp } from 'meteor/webapp'
import ConnectRoute from 'connect-route'
import { Popups } from '../../imports/collections/popups/Popups'
const Fiber = Npm.require('fibers')
function onRoute (req, res, next) {
res.setHeader('Access-Control-Allow-Origin', '*')
res.setHeader('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept')
let rawPostBody = ''
let postData = {}
req.on('data', function (chunk) {
console.log('on data')
rawPostBody += chunk.toString()
})
req.on('end', function () {
console.log('on end')
postData = getPostData(rawPostBody)
console.log('postData', postData)
console.log('postData.event', postData.event)
console.log('postData._id', postData._id)
Fiber(() => {
Meteor.call('updateAnalytics', postData, (error, result) => {
if (error) {
console.log('updateAnalytics error', error)
}
if (result) {
}
})
console.log('res', res)
res.writeHead(200)
res.end()
}).run()
})
}
function getPostData (rawPostBody) {
let postData = {}
let pairs = rawPostBody.split('&')
for (let i = 0; i < pairs.length; i++) {
let kv = pairs[i].split('=')
postData[kv[0]] = decodeURIComponent((kv[1] + '').replace(/\+/g, '%20'))
}
return postData
}
const middleware = ConnectRoute(function (router) {
// 2uik9 is for webhooks requests
router.post('/handlePopups', onRoute)
})
WebApp.connectHandlers.use(middleware)
现在当我从chrome控制台执行ajax请求时,我收到此错误
XMLHttpRequest cannot load https://b2c.meteorapp.com/handlePopups. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://stackoverflow.com' is therefore not allowed access.
我的服务器控制台中也没有记录任何内容。 但是我没有设置标题?我做错了吗? 另请注意,当我使用像Hurl.it这样的测试http请求服务时,会收到一个响应,其中显示有标题
HEADERS
Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept
Access-Control-Allow-Origin: *
Content-Length: 0
Content-Type: text/plain; charset=utf-8
Date: Tue, 14 Mar 2017 10:39:59 GMT
Set-Cookie: galaxy-sticky=ESEFdEqGgiFCeS9P9-ras9; Path=/; HttpOnly
我的服务器控制台会按原样记录所有内容。
所以,如果我的标题都设置好了,那么这里的问题是什么?
更新
感谢mutdmour和Alianp,错误消失了,但还有另一个错误XMLHttpRequest cannot load https://b2c-hayk94.c9users.io/handlePopups. Response for preflight is invalid (redirect)
你知道这个错误是什么吗?
更新
显然这是一个c9问题。在部署到galaxy之后,两个答案都像魅力一样工作,但是我接受了Alianp的答案,因为我只是为特定路线设置了标题。
答案 0 :(得分:1)
试试这个
//server/main.js
WebApp.rawConnectHandlers.use(function(req, res, next) {
res.setHeader("Access-Control-Allow-Origin", "*");
return next();
});
答案 1 :(得分:1)
您需要为CORS检查启用OPTIONS方法。
router.options('/handlePopups', function (req, res, next) {
res.setHeader('Access-Control-Allow-Origin', '*');
res.setHeader('Access-Control-Allow-Headers', 'Origin,X-Requested-With, Content-Type, Accept');
res.writeHead(200);
res.end();
});
在ConnectRoute函数中添加此代码并进行检查。