技术栈
下面我根据列出的步骤一一分析如何做代码实现,所有在代码在https://github.com/doterlin/vue-example-login中,并带有较详细注释帮助理解代码。 在此之前假设登录页面路由为/login,登录后的路由为/user_info。这样只需要在App.vue放好router-view用于存放和渲染这两个路由。
// component/App.vue
<template>
<div class="container" id="app">
<transition name="fade">
<keep-alive>
<router-view></router-view>
</keep-alive>
</transition>
</div>
</template>
...
// js/app.js
import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../component/Login.vue'
import UserInfo from '../component/UserInfo.vue'
Vue.use(VueRouter);
const router = new VueRouter({
routes: [{
path: '/login',
component: Login
}, {
path: '/user_info',
component: UserInfo
}]
})
...
// js/app.js
...
var app = new Vue({
data: {},
el: '#app',
render: h => h(App),
router,
store,
methods:{
checkLogin(){
//检查是否存在session
//cookie操作方法在源码里有或者参考网上的即可
if(!this.getCookie('session')){
//如果没有登录状态则跳转到登录页
this.$router.push('/login');
}else{
//否则跳转到登录后的页面
this.$router.push('/user_info');
}
}
}
})
// js/app.js
...
var app = new Vue({
...
created() {
this.checkLogin();
},
methods:{
checkLogin(){
...
}
}
})
// js/app.js
...
var app = new Vue({
...
//监听路由检查登录
watch:{
"$route" : 'checkLogin'
},
//进入页面时
created() {
this.checkLogin();
},
methods:{
checkLogin(){
...
}
}
})
// component/App.vue
...
<script>
export default {
...
mounted(){
//组件开始挂载时获取用户信息
this.getUserInfo();
},
methods: {
//请求用户的一些信息
getUserInfo(){
this.userInfo = {
nick: 'Doterlin',
ulevel: 20,
uid: '10000',
portrait: 'images/profile.png'
}
//获取信息请求
ts.$http.get(url, {
//参数
"params": this.userInfo
}).then((response) => {
//Success
if(response.data.code == 0){
this.$store.commit('updateUserInfo', this.userInfo);
}
}, (response) => {
//Error
});
}
}
}
</script>
...
// js/app.js
// Vuex配置
...
const store = new Vuex.Store({
state: {
domain:'http://test.example.com', //保存后台请求的地址,修改时方便(比方说从测试服改成正式服域名)
userInfo: { //保存用户信息
nick: null,
ulevel: null,
uid: null,
portrait: null
}
},
mutations: {
//更新用户信息
updateUserInfo(state, newUserInfo) {
state.userInfo = newUserInfo;
}
}
})
...
//component/Login.vue
<template>
<div class="login" id="login">
...
<div class="log-email">
<input type="text" placeholder="Email" :class="'log-input' + (account==''?' log-input-empty':'')" v-model="account"><input type="password" placeholder="Password" :class="'log-input' + (password==''?' log-input-empty':'')" v-model="password">
<a href="javascript:;" rel="external nofollow" class="log-btn" @click="login">Login</a>
</div>
...
</div>
</template>
<script>
import Loading from './Loading.vue'
export default {
name: 'Login',
data(){
return {
isLoging: false,
account: '',
password: ''
}
},
components:{
Loading
},
methods:{
//登录逻辑
login(){
if(this.account!='' && this.password!=''){
this.toLogin();
}
}
}
</script>
...
...
//登录请求
toLogin(){
//一般要跟后端了解密码的加密规则
//这里例子用的哈希算法来自./js/sha1.min.js
let password_sha = hex_sha1(hex_sha1( this.password ));
//需要想后端发送的登录参数
let loginParam = {
account: this.account,
password_sha
}
//设置在登录状态
this.isLoging = true;
//请求后端
this.$http.post( 'example.com/login.php', {
param: loginParam).then((response) => {
if(response.data.code == 1){
//如果登录成功则保存登录状态并设置有效期
let expireDays = 1000 * 60 * 60 * 24 * 15;
this.setCookie('session', response.data.session, expireDays);
//跳转
this.$router.push('/user_info');
}
}, (response) => {
//Error
});
...
// component/UserInfo.vue
...
logout(){
//删除cookie并跳到登录页
this.isLogouting = true;
//请求后端,比如logout.php
// this.$http.post('eaxmple.com/logout.php')...
//成功后删除cookie
this.delCookie('session');
//重置loding状态
this.isLogouting = false;
//跳转到登录页
this.$router.push('/login/');
}
...