NodeJS res.send不是一个函数

Question

我正在尝试以下代码,但它给了我一个错误,"res.send不是一个函数".请帮我.

这是代码:

var http = require('http');
var fs = require('fs');
var connect = require('connect');
var express = require('express');

var app = express();
app.get('/', function(res, req  ) {
        res.send('Hello World');
    });

var server = app.listen(8888, function(){
    var host = server.address().address;
    var port = server.address().port;
    console.log("Example app listening at http://%s:%s", host, port);
});

服务器正常运行并正在连接.显示的完整错误是这样的:

TypeError:res.send不是c:\ wamp\www \node\server.js中的函数:8:13在Layer.handle [as handle_request](c:\ wamp\www \node \node_modules\express\lib \路由器\ layer.js:95:5)在Route.dispatch(c:\ wamp\www \)下一步(c:\ wamp\www \node \node_modules\express\lib\router\route.js:137:13) node \node_modules\express\lib\router\route.js:112:3)在Layer.handle [as handle_request](c:\ wamp\www \node \node_modules\express\lib\router\layer.js:95: 5)在c:\ wamp\www \node \node_modules\express\lib\router\index.js:281:22 at Function.process_params(c:\ wamp\www \node \node_modules\express\lib\router\index) .js:335:12)在expressInit(c:\ wamp\www \node \node_modules\express)下一步(c:\ wamp\www \node \node_modules\express\lib\router\index.js:275:10)\lib\middleware\init.js:40:5)在Layer.handle [as handle_request](c:\ wamp\www \node \node_modules\express\lib\router\layer.js:95:5)

Answer 1

根据API参考,第一个参数是请求,然后是响应

所以

    app.get('/', function(req, res) {
      res.send("Rendering file")
    }

应该解决它.

Answer 2

你有错误的参数res和req参数.

app.get('/', function(res, req)

应该

app.get('/', function(req, res)

来源:API文档.

Answer 3

交换要求和资源： function(req, res)