nodejs框架expressJS跨域处理

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第一种全局设置

    var express = require('express');      var app = express();      //设置跨域访问      app.all('*', function(req, res, next) {          res.header("Access-Control-Allow-Origin", "*");          res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");          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");          next();      });            app.get('/auth/:id/:password', function(req, res) {          res.send({id:req.params.id, name: req.params.password});      });            app.listen(3000);      console.log('Listening on port 3000...');

第二种局部设置

    var express = require('express');      var app = express();            app.get('/auth/:id/:password', function(req, res) {          res.header("Access-Control-Allow-Origin", "*");   //设置跨域访问          res.send({id:req.params.id, name: req.params.password});      });            app.listen(3000);      console.log('Listening on port 3000...');

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