安装Express.js后，我在节点上写了以下内容：

var express = require('express'), app =express.createServer();

app.configure(function(){
    app.use(express.methodOverride());
    app.use(express.bodyParser());
    app.use(express.router);
});
app.get('/', function(req, res){
    res.send('hola mundo');
});

app.listen(3020);
console.log('Hola Mundo');

当我启动应用程序时，我可以看到“你好，世界”的信息，但当我提交请愿书时，我收到了这个：

TypeError: Object #<IncomingMessage> has no method 'call'
    at Object.router [as handle] (/home/alumno/Escritorio/nodejs/node_modules/express/node_modules/connect/lib/middleware/router.js:96:6)
    at next (/home/alumno/Escritorio/nodejs/node_modules/express/node_modules/connect/lib/http.js:203:15)
    at Object.bodyParser [as handle] (/home/alumno/Escritorio/nodejs/node_modules/express/node_modules/connect/lib/middleware/bodyParser.js:88:61)
    at next (/home/alumno/Escritorio/nodejs/node_modules/express/node_modules/connect/lib/http.js:203:15)
    at Object.methodOverride [as handle] (/home/alumno/Escritorio/nodejs/node_modules/express/node_modules/connect/lib/middleware/methodOverride.js:35:5)
    at next (/home/alumno/Escritorio/nodejs/node_modules/express/node_modules/connect/lib/http.js:203:15)
    at Object.handle (/home/alumno/Escritorio/nodejs/node_modules/express/lib/http.js:84:5)
    at next (/home/alumno/Escritorio/nodejs/node_modules/express/node_modules/connect/lib/http.js:203:15)
    at HTTPServer.handle (/home/alumno/Escritorio/nodejs/node_modules/express/node_modules/connect/lib/http.js:216:3)
    at HTTPServer.emit (events.js:70:17)

感谢阅读