Node学习笔记（一）

妖狐艹你老母 2022-06-13 09:10 224阅读 0赞

## node实现验证登录功能 ##

'use strict';
    
    var http = require('http');
    var url = require('url');
    var querystring = require('querystring');
    
    http.createServer(function(request,response){ 
        // var u = url.parse(request.url);
        // console.log(u);
        // var u1 = url.parse(request.url,true);
        // console.log(u1);
        // response.writeHead(200,{'Content':'text/plain'})
        // response.end(request.method);
        // if(request.method == 'POST'){ 
        // var postData = '';
        // request.on('data',function(p){ 
        // postData+=p;
        // });
        // request.on('end',function(){ 
        // response.end(JSON.stringify(require('querystring').parse(postData)));
    
        // });
        // }else{ 
        // response.end('<h1>hello world</h1>');
        // }
    
        var path = url.parse(request.url);
        console.log(path);
        switch(path.pathname){
            case '/signin':
                signin(request,response);
                break;
            case '/post':
                post(request,response);
                break;
        }
    }).listen(2000,function(error){ 
        console.log('成功启动服务器端口2000')
    })
    var signinHtml = '<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>登陆</title></head><body><form action="/post" method="post"><table border="1"><tr><td>用户名</td><td><input type="text" name="username"></td></tr><tr><td>密码</td><td><input type="password" name="password"></td></tr><tr><td></td><td><input type="submit"></td></tr></table></form></body></html>';
    
    function signin(req,res){ 
        res.writeHead(200,{
            'Content-type':'text/html'
        });
        res.end(signinHtml);
    }
    
    function post(req, res){ 
        var postData = '';
        req.on('data',function(part){ 
            postData += part;
        });
        req.on('end',function(){ 
            var info = querystring.parse(postData);
            if(info.username === 'admin' && info.password ==='123'){
                res.writeHead(200,{
                    "Content-Type":"text/html"
                });
                res.end('成功登录')
            }else{
                res.writeHead(200,{
                    'Content-Type':'text/html'
                });
                res.end(signinHtml);
            }
        });
    }