用户注册登录
定接口
/*注册*/
/user?act=reg&name=aaa&pass=123
{"ok":"false","msg"="失败原因"}
/*登录*/
/user?act=login&name=aaa&pass=123
{"ok":"false","msg"="失败原因"} 访问方式
- 访问文件
- 例如：
http:localhost:8080/1.html
- 例如：
- 访问接口
- 例如：
http:localhost:8080//user?act=reg&name=aaa&pass=123
- 例如：
例子代码
const http = require('http');
const urlLib = require('url');
const fs = require('fs');
const querystring = require('qureystring');
var users = { "aaa": "123", "bbb": "456" };
var server = http.createServer(function (req, res) {
//解析数据
var str = "";
req.on('data', function (data) {
str += data;
});
req.on('end', function () {
var obj = libLib.parse(req.url, true);
const url = obj.pathname;
const GET = obj.query;
const POST = querystring.parse(str);
//区分接口文件
if (url == "/user") {
switch (GET.act) {
case 'reg': //检查用户是否存在
if (users[GET.user]) {
res.write('{"ok":false,"msg":"该用户已注册"}'
} else {//简易
users[GET.user] = GET.pass;
res.write('{"ok":true,"msg":"注册成功"}')
}
case 'login': //检查用户是否存在，密码是否正确
if (users[GET.user]==null) {
res.write('{"ok":false,"msg":"该用户未注册"}');
} else if (users[GET.user] != GET.pass) {
res.write('{"ok":false,"msg":"用户名或密码错误"}');
} else {
res.write('{"ok":true,"msg":"登录成功"}')
}
default:
res.write('{"ok":false,"msg":"未知act"}');
}
res.end();
} else {
//读取文件返回
var fileName = "./www" + url;
fs.readFile(fileName, function (data, err) {
if (err) {
res.write('404');
} else {
res.write(data);
}
});
}
});
});server.listen(8080);HTML
<!DOCTYPE html>
<html lang="en"><head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title></head><body>
<form id="myfrom" onsubmit="return false;">
用户：<input type="text" id="user" name="user" ><br>
密码：<input type="password" id="pass" name="pass"><br>
<input type="button" value="注册" id="regbnt">
<input type="button" value="登录" id="loginbnt">
</form>
<script>
var regBnt = document.getElementById('regbnt');
var subBnt = document.getElementById('loginbnt');
function register(){
const name =document.getElementById('user');
const pass = document.getElementById('pass');
var xhr = new XMLHttpRequest();
xhr.open('get', "http://localhost:8080/user?act=reg&user="+name.value+"&pass="+pass.value, false);
xhr.onreadystatechange = function(e) {
if(xhr.readyState==4){
if((this.status >= 200 && this.status < 300) || this.status == 304){ //alert(this.responseText);
var json= JSON.parse(this.responseText);
console.log(json);
if(json.ok){
alert("注册成功");
}else{
alert('注册失败:'+json.msg);
}
}else{
alert("通信错误！");
}
};
}
xhr.send(null);
}
regBnt.onclick = function(){
register();
}
function login(){
const name =document.getElementById('user');
const pass = document.getElementById('pass');
var xhr = new XMLHttpRequest();
console.log(name.value);
xhr.open('get', "http://localhost:8080/user?act=login&user="+name.value+"&pass="+pass.value, false);//直接用Alt+B打开时需加localhost
xhr.onreadystatechange = function(e) {
if(xhr.readyState==4){
if((this.status >= 200 && this.status < 300) || this.status == 304){
var json= JSON.parse(this.responseText);//转换
console.log(json);
if(json.ok){
alert("登录成功");
}else{
alert('登录失败:'+json.msg);
}
}else{
alert("通信错误！");
}
};
}
xhr.send(null);
}
subBnt.onclick = function(){
login();
}
</script>
</body>
</html>