选项上的快速返回状态300

Question

我的快递应用程序（用于文件服务）每当请求方法＆＃34; OPTIONS＆＃34;由我的客户端应用程序发送给它。这是代码：

import express from 'express'
import * as middleware from './middleware'
let App = express();

// Logger
App.use((req, res, next) => {
  console.log(req.method, req.url)
  next()
})

// Cors
App.use((req, res, next) => {
  res.header("Access-Control-Allow-Origin", "*");
  res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, Authorization");
  next();
});

// Middleware
// App.use('/', middleware.authenticate)

// Root
App.get('/', (req, res) => {
  res.send('Test!')
})

App.listen(3030, () => {
  console.log('It\'s working!')
})

在我的另一个客户端（也是跨域）我得到＆＃34; 300＆＃34;随机：

当＆＃34; 300＆＃34;时，似乎没有真正的模式。正如您所见，会发生错误。

以下是我的客户发送的请求的代码：

import axios from 'axios'
import Store from '../store'

let api_url = 'http://127.0.0.1:8000/api'
let media_url = 'http://127.0.0.1:3030'

let urls = {
  api: api_url,
  media: media_url,
}

const Request = {
  GET: function(url, server) {
    this.getAuthtoken();
    return axios.get(urls[server || 'api'] + url, this.config)
  },
  getAuthtoken: function() {
    let token = Store.getState().auth.key;
    if (token !== null) {
      this.config.headers['Authorization'] = "Token " + token
    } else {
      delete this.config.headers.Authorization;
    }
  },
  config: {
    headers: {}
  }
}

// The request
Request.GET('/', 'media').then((response) => {
  console.log(response)
})

Answer 1

Chrome似乎是错误的。我的扩展都没有导致问题，但清除所有数据和重置chrome修复了问题。