nodejs 实现跨域

1、nodejs

let http = require('http'); http.createServer((req,res) => { 　　　res.setHeader("Access-Control-Allow-Origin", "http://localhost:7000"); // 设置可访问的源 res.setHeader("Access-Control-Allow-Headers", "Content-Type"); res.setHeader("content-type", "application/json") res.end(JSON.stringify({ data: { msg: 'hello world!' }, status: 'success' })) }).listen(8000)

js:

$.ajax({ type: 'post', url: 'http://localhost:8000', headers: { 'Content-type': "application/json" }, success: function (res) { console.log('success') }, error(err) { console.error(err) } })

2、nodejs express

var express = require('express'); var app = express(); var cors = require('cors'); app.use(cors()); //设置跨域访问 app.all('*', function(req, res, next) { res.header("Access-Control-Allow-Origin", "http://localhost:7000"); res.header("Access-Control-Allow-Headers", "Content-Type,Access-Token"); res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS"); res.header("X-Powered-By",' 3.2.1'); res.header("Content-Type", "application/json;charset=utf-8"); res.end(JSON.stringify({ data: 'hello world!' })) }); app.listen(8000);

　　

转载于:https://www.cnblogs.com/tengrl/p/10729277.html