小编mis*_*kis的帖子

我在 Heroku 上遇到 CORS 问题。

这是我在服务器上的代码

import express from 'express';
import bodyParser from 'body-parser';
import mongoose from 'mongoose';
require('dotenv').config()

import filmRoutes from './api/routes/films'
import userRoutes from './api/routes/users'

const app = express()

const DBNAME = process.env.DB_USER 
const DBPASSWORD = process.env.DB_PASS


mongoose.connect(`mongodb://${DBNAME}:${DBPASSWORD}@ds157422.mlab.com:57422/filmbase`, {useNewUrlParser: true})

app.use(function(req, res, next) {
  res.header("Access-Control-Allow-Origin", '*');
  res.header("Access-Control-Allow-Credentials", true);
  res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE,OPTIONS');
  res.header("Access-Control-Allow-Headers", 'Origin,X-Requested-With,Content-Type,Accept,content-type,application/json');
  next();
});

app.use(bodyParser.urlencoded({extended: false}));
app.use(bodyParser.json());

app.use('/films', filmRoutes)
app.use('/users', userRoutes)


export default app;

这是我的帖子请求

  CheckLogin = () => {
    const data = {
      name: this.state.formInput.login.value,
      password: this.state.formInput.password.value …