node.js之router路由

var http = require("http");

var server = http.createServer(function(req,res){
    //得到url
    var url = req.url();

    res.writeHead(200, { "Content-type": "text/html;charset=UTF-8" });
    //substr函数来判断此时的开头
    if(userurl.substr(0,9) == "/student/"){
        var studentid = userurl.substr(9);
        if (/\w{10}/.test(studentid)){
            res.end("您要查询学生信息，id为" + studentid);
        }else{
            res.end("学生学号位数不对");
        }
    } else if (userurl.substr(0, 9) == "/teacher/"){
        var teacherid = userurl.substr(9);
        if (/\w{6}/.test(teacherid)) {
            res.end("您要查询老师信息，id为" + teacherid);
        } else {
            res.end("老师学号位数不对");
        }
    }else{
        res.end("请检查url");
    }
});

server.listen(3000,"127.0.0.1");