关于Node.js程式错误

Question

var express = require("express") ,http =require("http");
var app = express();

app.configure(function(){
    app.set("port", process.env.PORT || 3000);
});

app.get("/", function(request,response){
    var message = ["<h1>Hello guys</h1>"].join("\n");

    response.send(message);
});

app.get("/user/:userId", function(request,response){
    response.send("<h1>Hello, user # " + response.params.userId + ".");
});

错误：-

app.configure（函数（）{}）; TypeError：app.configure不是函数

Answer 1

app.configure已从Express 4中删除，请参阅： https : //github.com/expressjs/express/wiki/Migrating-from-3.x-to-4.x 。

相反，您可以直接进行配置：

 app.set("port", process.env.PORT || 3000);

 app.listen(app.get('port'));