vue之登录注册
主要内容
本章目标:vue+elementUI完成注册及登陆
- vue怎么引入和配置使用element-ui框架
1.1 使用vue-cli脚手架工具创建一个vue项目
vue init webpack pro01
1.2 npm安装elementUI
cd pro01 #进入新建项目的根目录
npm install element-ui -S #安装element-ui模块
重要的事情说三遍:在指定位置!!!在指定位置!!!在指定位置!!!~~~添加三行代码
1.3 在项目中src目录下找到main.js,并在指定位置添加三行代码(main.js是入口文件,所以在这里引入就行,页面就不用引入了)
import Vue from ‘vue’
import ElementUI from 'element-ui' //新添加1
import 'element-ui/lib/theme-chalk/index.css' //新添加2,避免后期打包样式不同,要放在import App from './App';之前
import App from './App'
import router from './router'
Vue.use(ElementUI) //新添加3
Vue.config.productionTip = false
T
1.4 测试
修改HelloWorld.vue添加elementUI组件查看效果
-
Vue+ElementUI设计登陆页面
注1:相关样式见资料“css.txt”
注2:
T
-
后台交互(axios/qs/vue-axios)
3.1 axios
axios是vue2提倡使用的轻量版的ajax。它是基于promise的HTTP库。它会从浏览器中创建XMLHttpRequests,与Vue配合使用非常好。扫描二维码关注公众号,回复: 12713186 查看本文章1.题外话:
vue.js有著名的全家桶系列:vue-router,vuex, vue-resource,再加上构建工具vue-cli,就是一个完整的vue项目的核心构成。
其中vue-resource是Vue.js的一款插件,它可以通过XMLHttpRequest或JSONP发起请求并处理响应,但在vue更新到2.0之后,
作者就宣告不再对vue-resource更新,而是推荐的axiosnpm i axios -S
2.GET提交
axios.get(’/user’, {//注意数据是保存到json对象的params属性
params: {
ID: 12345
}
}).then(function (response) {
console.log(response);
}).catch(function (error) {
console.log(error);
});3.POST提交
axios.post(’/user’, {//注意数据是直接保存到json对象
firstName: ‘Fred’,
lastName: ‘Flintstone’
}).then(function (response) {
console.log(response);
}).catch(function (error) {
console.log(error);
});注1:axios跨域问题
会一直报错:“http://127.0.0.1:8848’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header”
因为使用了前后端分离开发,跨域访问了,解决方案:需要配置tomcat允许跨域访问,
tomcat跨域配置方法很多,但最简单的方式是自己写一个过滤器CorsFilter实现,添加一个响应头
Access-Control-Allow-Origin即可
httpResponse.addHeader(“Access-Control-Allow-Origin”, “*”);//*表示任何域名
httpResponse.addHeader(“Access-Control-Allow-Origin”, “http://localhost:80”);Access-Control-Allow-Origin:* #则允许所有域名的脚本访问该资源。 Access-Control-Allow-Origin:https://www.fujieace.com #允许特定的域名访问
注2:axios.get提交没有问题,axios.post提交后台接收不到数据
因为POST提交的参数的格式是Request Payload,这样后台取不到数据的(详情见资料“05 Vue中axios踩坑之路-POST传参 - RainSun - CSDN博客.mht”),
解决方案:使用qs.js库,将{a:‘b’,c:‘d’}转换成’a=b&c=d’注3:为简化axios使用,还可以使用axios全局配置及拦截器,详情见资料“api/http.js”
axios.defaults.baseURL = ‘https://api.example.com’;
//axios.defaults.headers.common[‘Authorization’] = AUTH_TOKEN;//自定义请求头,添加认证令牌
axios.defaults.headers.post[‘Content-Type’] = ‘application/x-www-form-urlencoded’;注4:为方便开发,建议对请求地址进行封装,详情见资料“api/action.js”
注5:_~~~~为进一步简化开发,将action.js的URL地址封装到axios.urls属性上
步骤
先打开你们的cdm然后在你们的随便一个盘里面新建一个文件夹 记住文件夹不能有中文 建好之后就到年底cdm里面按照上面文章写的步骤操作
等最后一个就界面到这样的你的操作就是成功的 然后这个时候你的文件夹里面就会有一个项目接着就操作下一步(记得要按照上面主要内容里面我写的那些步骤来)
然后它显示这个蓝色的之后就表示成功可以进行下一步了
下一步就是需要改一下端口号我们先把cdm里面的程序停一下(ctrl+c)然后打开HBuilderX把我们的项目打开
改好了之后再运行我们的cdm(直接点击上下箭头就可以看见我们之前的操作 )
再到我们的HBuilderx进行添加代码
到这一步我们的项目基础就已经加载好了
然后就在项目里面src下面建一个views目录
就是代码部分啦
login.vue界面
<template>
<div class="login-wrap">
<el-form class="login-container">
<h1 class="title">用户登录</h1>
<el-form-item label="" >
<el-input type="text" placeholder="用户账号" v-model="username" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="">
<el-input type="password" placeholder="用户密码" v-model="password" autocomplete="off"></el-input>
</el-form-item>
<el-form-item>
<el-button type="primary"@click="doLogin" style="width: 48%;">用户登录</el-button>
<el-button style="width: 48%;">用户注册</el-button>
</el-form-item>
</el-form>
</div>
</template>
<script>
export default{
data:function(){
return{
udername:null,
password:null
}
},
methods:{
doLogin:function(){
let params={
username:this.username,
password:this.password
};
console.log(params);
}
}
}
</script>
//scoped="scoped"表示样式仅仅规范当前vue
<style scoped="scoped">
.login-wrap {
box-sizing: border-box;
width: 100%;
height: 100%;
padding-top: 10%;
background-image: url(data:image/svg+xml;base64,<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg width="1361px" height="609px" viewBox="0 0 1361 609" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
    <!-- Generator: Sketch 46.2 (44496) - http://www.bohemiancoding.com/sketch -->
    <title>Group 21</title>
    <desc>Created with Sketch.</desc>
    <defs></defs>
    <g id="Ant-Design-Pro-3.0" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
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</svg>);
/* background-color: #112346; */
background-repeat: no-repeat;
background-position: center right;
background-size: 100%;
}
.login-container {
border-radius: 10px;
margin: 0px auto;
width: 350px;
padding: 30px 35px 15px 35px;
background: #fff;
border: 1px solid #eaeaea;
text-align: left;
box-shadow: 0 0 20px 2px rgba(0, 0, 0, 0.1);
}
.title {
margin: 0px auto 40px auto;
text-align: center;
color: #505458;
}
</style>
app.vue
<template>
<div id="app">
<!-- <img src="./assets/logo.png"> -->
<router-view/>
</div>
</template>
<script>
export default {
name: 'App'
}
</script>
<style>
html,
body {
width: 100%;
height: 100%;
box-sizing: border-box;
padding: 0px;
margin: 0px;
}
#app {
font-family: "Avenir", Helvetica, Arial, sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
color: #2c3e50;
widows: 100%;
height: 100%;
}
</style>
index.js
import Vue from 'vue'
import Router from 'vue-router'
import HelloWorld from '@/components/HelloWorld'
import Login from '@/views/Login'
Vue.use(Router)
export default new Router({
routes: [
{
path: '/HelloWorld',
name: 'HelloWorld',
component: HelloWorld
},
{
path: '/',
name: 'Login',
component: Login
}
]
})
main.js
// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import ElementUI from 'element-ui' //新添加1
//新添加2,避免后期打包样式不同,要放在import App from './App';之前
import 'element-ui/lib/theme-chalk/index.css'
import App from './App'
import router from './router'
Vue.use(ElementUI) //新添加3
Vue.config.productionTip = false
/* eslint-disable no-new */
new Vue({
el: '#app',
router,
components: { App },
template: '<App/>'
})
config里面index.js
'use strict'
// Template version: 1.3.1
// see http://vuejs-templates.github.io/webpack for documentation.
const path = require('path')
module.exports = {
dev: {
// Paths
assetsSubDirectory: 'static',
assetsPublicPath: '/',
proxyTable: {},
// Various Dev Server settings
host: 'localhost', // can be overwritten by process.env.HOST
port: 8083, // can be overwritten by process.env.PORT, if port is in use, a free one will be determined
autoOpenBrowser: false,
errorOverlay: true,
notifyOnErrors: true,
poll: false, // https://webpack.js.org/configuration/dev-server/#devserver-watchoptions-
/**
* Source Maps
*/
// https://webpack.js.org/configuration/devtool/#development
devtool: 'cheap-module-eval-source-map',
// If you have problems debugging vue-files in devtools,
// set this to false - it *may* help
// https://vue-loader.vuejs.org/en/options.html#cachebusting
cacheBusting: true,
cssSourceMap: true
},
build: {
// Template for index.html
index: path.resolve(__dirname, '../dist/index.html'),
// Paths
assetsRoot: path.resolve(__dirname, '../dist'),
assetsSubDirectory: 'static',
assetsPublicPath: '/',
/**
* Source Maps
*/
productionSourceMap: true,
// https://webpack.js.org/configuration/devtool/#production
devtool: '#source-map',
// Gzip off by default as many popular static hosts such as
// Surge or Netlify already gzip all static assets for you.
// Before setting to `true`, make sure to:
// npm install --save-dev compression-webpack-plugin
productionGzip: false,
productionGzipExtensions: ['js', 'css'],
// Run the build command with an extra argument to
// View the bundle analyzer report after build finishes:
// `npm run build --report`
// Set to `true` or `false` to always turn it on or off
bundleAnalyzerReport: process.env.npm_config_report
}
}
总结
今天的内容就先到这里 因为还有一些有点没解决所以不是好 后面再继续改进!