Nodejs登陆注册应用

1.搭建服务器：
const http = require(‘http‘);
const urlLib = require(‘url‘);
const querystring = require(‘querystring‘);
const fs = require(‘fs‘);

http.createServer(function(req,res){ //创建服务器
???var str = ‘‘;
???req.on(‘data‘,function(data){
???????str += data;
???});
???req.on(‘end‘,function(){ ?//解析数据
???????const post = querystring.parse(str);
???????const obj = urlLib.parse(req.url,true);
???????const get = obj.query;
???????const url = obj.pathname;
???????//console.log(url,get,post);

???????var file_name = ‘./www‘+ url;
???????fs.readFile(file_name,function(err,data){//读取后台文件
???????????if(err){
???????????????res.write(‘404‘);
???????????}else{
???????????????res.write(data);
???????????}
???????})
???});
}).listen(8080);

2.配置接口：
// jiekou.html?user=yang&pass=123 //对文件的访问
//接口： ?/user?act=reg&user=aaa&pass=123456 ?????{"ok":false,"msg":"原因"} ???注册
//接口： ?/user?act=login&user=aaa&pass=123456 ?????{"ok":true,"msg":"原因"} ??登陆

这里有个问题，如果前台请求比如
http://localhost:8080/1.html
http://localhost:8080/ajax.js
http://localhost:8080/1.jpg
这些都是请求文件，如果请求接口
http://localhost:8080/user?act=xx...
这就要分两种情况考虑是对请求文件的访问还是对接口的访问

//对接口的访问
if(url==‘/user‘){ ?//接口
 ???//判断接口是登陆还是注册
 ???switch(get.act){
 ???????case ‘reg‘: ?//如果是注册
 ???????????//1.检查用名是否已经被注册
 ???????????//2.输入users;
 ???????????if(users[get.user]){
 ???????????????res.write(‘{"ok": false, "msg": "此用户已存在"}‘)
 ???????????}else{
 ???????????????users[get.user]= get.pass;//插入users
 ???????????????res.write(‘{"ok": true, "msg": "注册成功"}‘)
 ???????????}
 ???????????break;
 ???????case ‘login‘://如果是登陆
 ???????????// 1.检查用户是否存在
 ???????????// 2.检查密码是否正确。
 ???????????if(users[get.user]==null){
 ???????????????res.write(‘{"ok": false, "msg": "不存在"}‘)
 ???????????}else if(users[get.user]!=get.pass){
 ???????????????res.write(‘{"ok": false, "msg": "密码错误"}‘)
 ???????????}else{
 ???????????????res.write(‘{"ok": true, "msg": "登陆成功"}‘)
 ???????????}
 ???????????break;
 ???????default:
 ???????????res.write(‘{"ok": false, "msg": "未知的act"}‘);
 ???}
 ???res.end();
}else{ ???????//文件
 ???//读取文件
 ???var file_name = ‘./www‘+ url;
 ???fs.readFile(file_name,function(err,data){
 ???????if(err){
 ???????????res.write(‘404‘);
 ???????}else{
 ???????????res.write(data);
 ???????}
 ???????res.end();
 ???})
}

Nodejs登陆注册应用

原文地址：https://www.cnblogs.com/Cavalary/p/9280059.html