在nodejs中向客户端发送响应

无法将响应数据发送回客户端。 它的抛出错误说response.write()不是一个函数：

 var express = require('express'); var app = express(); var request = require('request'); var port = process.env.PORT || 5000; app.set('port', (port)); app.use(express.static(__dirname + '/')); app.get('/', function(request, response) { response.render('/'); }); app.listen(app.get('port'), function() { console.log('Node app is running on port', app.get('port')); }); app.post('/login', verifyLogin); function verifyLogin(req, res, next) { var loginParams = { 'username': req.body.username, 'password': req.body.password }; request({ url: 'http://localhost:8084/xxx/auth', //URL to hit qs: {username: req.body.username, password: req.body.password}, method: 'POST', json: { "username": req.body.username, "password": req.body.password } }, function(error, response, body){ if(error) { console.log(error); } else { response.write(body); // ERROR here response.write is not a function return response; } }); 

我在命令提示符控制台中获取响应数据，但是如何将响应数据发送回客户端？

Answer 1

我觉得你把你的response.write和res.write混淆了？

您正在使用requestcallback的response ，而不是来自app.postcallback的res

Answer 2

res.send()用于向客户端发送响应。

 function verifyLogin(req, res, next) { var loginParams = { 'username': req.body.username, 'password': req.body.password }; request({ url: 'http://localhost:8084/xxx/auth', //URL to hit qs: {username: req.body.username, password: req.body.password}, method: 'POST', json: { "username": req.body.username, "password": req.body.password } }, function(error, response, body){ if(error) { console.log(error); } else { //response.write(body); // ERROR here response.write is not a function res.send(body);// AND IT SHOULD BE USUALLY TRUE OR WITH THE OBJECT //SO IT CAN ALSO BE res.send(true); // return response; } }); 

例如，它被写为

 var express = require('express'); var app = express(); app.get('/', function(req, res){ res.send('hello world'); }); app.listen(3000); 

这里是参考http://expressjs.com/en/api.html