详解前后端分离之VueJS前端
作者：root__1024
本篇文章主要介绍了详解前后端分离之VueJS前端，小编觉得挺不错的，现在分享给大家，也给大家做个参考。一起跟随小编过来看看吧
前言
前端用什么框架都可以，这里选择小巧的vuejs。
要实现的功能很简单：
1、登录功能，成功将服务器返回的token存在本地
2、使用带token的header访问服务器的一个资源
本次实验环境：
"dependencies": {
"vue": "^2.2.1"
},
"devDependencies": {
"babel-core": "^6.0.0",
"babel-loader": "^6.0.0",
"babel-preset-latest": "^6.0.0",
"cross-env": "^3.0.0",
"css-loader": "^0.25.0",
"file-loader": "^0.9.0",
"vue-loader": "^11.1.4",
"vue-template-compiler": "^2.2.1",
"webpack": "^2.2.0",
"webpack-dev-server": "^2.2.0"
}
开发IDE：Atom
首先建一个项目
使用webpack构建
/Atom# vue init webpack-simple vue-jwt-demo ... /Atom# cd vue-jwt-demo/ /Atom/vue-jwt-demo# cnpm install /Atom/vue-jwt-demo# npm run dev
安装插件
/Atom/vue-jwt-demo# cnpm install vue-router /Atom/vue-jwt-demo# cnpm install vue-resource
整体目录
auth.js
完成token的存取
const SERVER_URL = 'http://localhost:8081'
const LOGIN_URL = SERVER_URL+'/login2'
export default{
data:{
authenticated:false
},
login(context,info){
context.$http.post(LOGIN_URL,info).then(function(data){
console.log(data.bodyText)
localStorage.setItem('token',data.bodyText);
this.authenticated = true
//跳到home页
this.$router.push('home')
},function(err){
console.log(err+","+err.body.message)
context.error = err.body.message
})
},
getAuthHeader(){
return {
'Authorization':'Bearer '+localStorage.getItem('token')
}
},
checkAuth(){
var token = localStorage.getItem('token')
if(token){
this.authenticated = true
}else{
this.authenticated = false
}
}
}
main.js
程序入口：完成路由和初始化
import Vue from 'vue'
import App from './App.vue'
import Login from './component/Login.vue'
import Home from './component/Home.vue'
import VueRouter from 'vue-router'
import VueResource from 'vue-resource'
import auth from './auth/auth'
Vue.use(VueRouter)
Vue.use(VueResource)
//在启动APP时进行校验是否有token
auth.checkAuth()
const routes= [
{
path:'/',redirect:'/login'
},
{
path:'/login',component:Login
},
{
path:'/home',component:Home
}
]
const router = new VueRouter({
routes
})
new Vue({
router,
render: h => h(App)
}).$mount('#app')
App.vue
页面载体
<template>
<div id="app">
<h1>{{msg}}</h1>
<router-view></router-view>
</div>
</template>
<script>
export default {
name: 'app',
data () {
return {
msg: 'Vue前后端分离demo'
}
}
}
</script>
Login.vue
登录页面
<template>
<div>
<h2>登录</h2>
<p>{{ error }}</p>
<div>
<input
type="text"
placeholder="Enter your username"
v-model="info.username"
>
</div>
<div>
<input
type="password"
placeholder="Enter your password"
v-model="info.password"
>
</div>
<button @click="submit()">登录</button>
</div>
</template>
<script>
import auth from '../auth/auth'
export default {
data() {
return {
info: {
username: '',
password: ''
},
error: ''
}
},
methods: {
submit() {
var info = {
username: this.info.username,
password: this.info.password
}
auth.login(this, info)
}
}
}
</script>
效果：丑是丑了点
Home.vue
主页面，访问一个获取邮箱的请求
<template>
<div id="home">
<h1>{{msg}}</h1>
<button @click="getEmail()">Get Email</button>
<h2>Email:{{email}}</h2>
</div>
</template>
<script>
import auth from '../auth/auth'
export default {
name: 'home',
data () {
return {
msg: '欢迎您登录成功',
email:''
}
},
beforeCreate(){
//如果没有token的话需要重新登录
if(!auth.authenticated){
this.$router.push('login')
}
},
methods:{
getEmail(){
this.$http.get('http://localhost:8081/user/getEmail',{
headers:auth.getAuthHeader()
}).then(function(re){
this.email = re.bodyText
},function(){
console.log("get email error")
})
}
}
}
</script>
<style>
#app {
font-family: 'Avenir', Helvetica, Arial, sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
text-align: center;
color: #2c3e50;
margin-top: 60px;
}
h1, h2 {
font-weight: normal;
}
a {
color: #42b983;
}
</style>
对应在服务端：
@GetMapping("/getEmail")
public String getEmail() {
return "xxxx@qq.com";
}
可看到浏览器的本地存储：
代码：https://github.com/jimolonely/vue-jwt-demo
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。