今日内容
零、 复习昨日
零、 复习昨日
一、Element UI
Element,一套为开发者、设计师和产品经理准备的基于 Vue 2.0 的桌面端组件库
官网: https://element.eleme.cn/#/zh-CN
Element Plus,基于 Vue 3,面向设计师和开发者的组件库
官网: https://element-plus.gitee.io/zh-CN/
二 安装&入门使用
2.1 创建vue项目
-
命令行创建
-
界面创建
过程略…
创建完项目,idea打开
2.2 安装ElementUI
npm install element-ui -S
2.3 项目中引入
引入Element
// main.js
import ElementUI from 'element-ui';
import 'element-ui/lib/theme-chalk/index.css';
Vue.use(ElementUI);
// ...其他以前的东西...
2.4 测试
新建文件,Element官网复制代码,启动访问即可
三、常用组件
3.1 布局
3.2 容器
3.3 单选
3.4 复选框
3.5 输入框
3.6 下拉框
3.7 日期
3.8 上传
3.9 表单
3.10 表格
3.11 弹框
四、练习
4.1 登录页
项目启动访问登录,修改路由
编写登录页面
<template>
<div>
<el-row>
<el-col :span="8" :offset="8">
<h1>登录页面</h1>
<el-form ref="form" :model="form" label-width="80px">
<el-form-item label="用户名">
<el-input v-model="form.username"></el-input>
</el-form-item>
<el-form-item label="密码">
<el-input v-model="form.password" type="password"></el-input>
</el-form-item>
<el-form-item>
<el-button type="primary" @click="onSubmit">登录</el-button>
</el-form-item>
</el-form>
</el-col>
</el-row>
</div>
</template>
<script>
import axios from 'axios'
export default {
name: 'Login',
data() {
return {
form: {
username: '',
password: ''
}
}
},
methods: {
onSubmit() {
axios.get('/login',{
params: {
username: this.form.username,
password: this.form.password,
}
}).then(res => {
console.log('登录返回',res)
if (res.code == 2000) {
this.$message({
message: '恭喜你,登录成功',
type: 'success',
duration:600
});
} else {
this.$message({
message: '用户名或密码错误,登录失败',
type: 'error',
duration:600
});
}
})
}
}
}
</script>
<style scoped>
</style>
配置axios,在main。js中定义
// 基础路径
axios.defaults.baseURL = 'http://localhost:8080/day39';
// 添加响应拦截器
axios.interceptors.response.use(function (response) {
return response.data;// 取出R
}, function (error) {
return Promise.reject(error);
});
4.2 主页
创建主页面,填充布局容器
<template>
<div>
<!--最外层容器-->
<el-container class="max-container">
<!--头部-->
<el-header>用户管理系统后端</el-header>
<!--内部容器-->
<el-container>
<!--侧边-->
<el-aside width="200px">
<!--:default-openeds="['1']" 默认打开-->
<el-menu >
<el-submenu index="1">
<template slot="title"><i class="el-icon-message"></i>用户管理</template>
<el-menu-item index="1-1">选项1</el-menu-item>
<el-menu-item index="1-2">选项2</el-menu-item>
</el-submenu>
<el-submenu index="2">
<template slot="title"><i class="el-icon-menu"></i>角色管理</template>
<el-menu-item index="1-1">选项1</el-menu-item>
<el-menu-item index="1-2">选项2</el-menu-item>
</el-submenu>
<el-submenu index="3">
<template slot="title"><i class="el-icon-setting"></i>系统设置</template>
<el-menu-item index="1-1">选项1</el-menu-item>
<el-menu-item index="1-2">选项2</el-menu-item>
</el-submenu>
</el-menu>
</el-aside>
<!--小容器-->
<el-container>
<!--主要界面-->
<el-main>Main</el-main>
<!--页脚-->
<el-footer>© 2024 Java2403ByTaotie Copyright</el-footer>
</el-container>
</el-container>
</el-container>
</div>
</template>
<script>
export default {
name: 'Admin'
}
</script>
<style scoped>
.max-container {
height: 710px;
}
.el-header, .el-footer {
background-color: #B3C0D1;
color: #333;
text-align: center;
line-height: 60px;
}
.el-aside {
background-color: #D3DCE6;
color: #333;
text-align: center;
line-height: 200px;
}
.el-main {
background-color: #E9EEF3;
color: #333;
text-align: center;
line-height: 160px;
}
body > .el-container {
margin-bottom: 40px;
}
.el-container:nth-child(5) .el-aside,
.el-container:nth-child(6) .el-aside {
line-height: 260px;
}
.el-container:nth-child(7) .el-aside {
line-height: 320px;
}
</style>
登录成功后,路由跳转到这个页面
4.3 退出按钮
头部添加按钮,以及事件,路由回到登录页
4.4 存储、销毁登录状态
先在Vuex中设置好存储登录的user值,以及设置准备修改user数据的函数
登录时存入
退出时销毁
设置路由守护拦截
// 完整的router/index.js代码
import Vue from 'vue'
import VueRouter from 'vue-router'
import LoginView from "@/views/LoginView.vue";
import AdminView from "@/views/AdminView.vue";
import store from '@/store'
Vue.use(VueRouter)
const routes = [
{
path: '/',
name:'Login',
component: LoginView
},
{
path: '/admin',
name:'Admin',
component: AdminView
},
]
const router = new VueRouter({
mode: 'history',
base: process.env.BASE_URL,
routes
})
router.beforeEach((to, from, next) => {
if (to.name !== 'Login') {
console.log("这是路由守卫取出Vuex中数据User",store.state.user.username)
if(store.state.user.username){
next()
} else {
next({ name: 'Login' })
}
}else {
next()
}
})
export default router
// Vuex要持久化
-
安装插件
npm install vuex-persistedstate
-
配置
在/src/store/index.js中实现配置
import Vue from 'vue' import Vuex from 'vuex' // 1引入持久化插件 import vuexPersistedstate from "vuex-persistedstate"; Vue.use(Vuex) export default new Vuex.Store({ // ... , plugins:[vuexPersistedstate()] // 2加入插件 })
4.5 用户界面路由展示
设置路由入口,
设置路由规则,用户界面是设置AdminView中的,属于嵌套路由,所以要设置路由子路径
设置路由展示,在主界面的Main中
4.6 用户页面布局
<template>
<div>
<el-card class="box-card" :body-style="{ padding: '15px',height:'30px' }">
<el-form :inline="true" :model="formInline" class="demo-form-inline">
<el-form-item label="用户名">
<el-input v-model="formInline.username" placeholder="用户名"></el-input>
</el-form-item>
<el-form-item label="手机号">
<el-input v-model="formInline.phone" placeholder="手机号"></el-input>
</el-form-item>
<el-form-item>
<el-button type="primary" @click="onSubmit">查询</el-button>
</el-form-item>
</el-form>
</el-card>
<el-card class="box-card">
<el-table
:data="tableData"
style="width: 100%">
<el-table-column
prop="date"
label="日期"
width="180">
</el-table-column>
<el-table-column
prop="name"
label="姓名"
width="180">
</el-table-column>
<el-table-column
prop="address"
label="地址">
</el-table-column>
</el-table>
</el-card>
<el-card class="box-card" :body-style="{ padding: '15px',height:'30px'}">
<el-pagination
@size-change="handleSizeChange"
@current-change="handleCurrentChange"
:current-page="currentPage4"
:page-sizes="[100, 200, 300, 400]"
:page-size="100"
layout="total, sizes, prev, pager, next, jumper"
:total="400">
</el-pagination>
</el-card>
</div>
</template>
<script>
export default {
name:"User",
data(){
return {
formInline: {
username: '',
phone: ''
},
tableData: [{
date: '2016-05-02',
name: '王小虎',
address: '上海市普陀区金沙江路 1518 弄'
}, {
date: '2016-05-04',
name: '王小虎',
address: '上海市普陀区金沙江路 1517 弄'
}, {
date: '2016-05-01',
name: '王小虎',
address: '上海市普陀区金沙江路 1519 弄'
}, {
date: '2016-05-03',
name: '王小虎',
address: '上海市普陀区金沙江路 1516 弄'
}, {
date: '2016-05-03',
name: '王小虎',
address: '上海市普陀区金沙江路 1516 弄'
}, {
date: '2016-05-03',
name: '王小虎',
address: '上海市普陀区金沙江路 1516 弄'
}, {
date: '2016-05-03',
name: '王小虎',
address: '上海市普陀区金沙江路 1516 弄'
},]
}
}
}
</script>
<style scoped>
.box-card {
width: 100%;
margin-top: 10px;
}
</style>
注意: 此时只是布局,真正完整效果后续改动…
4.7 查询全部用户
UserView页面加载时查询全部,设置钩子函数,查询全部,设置表格数据
<template>
<div>
<!--搜索卡片-->
<el-card class="box-card" :body-style="{ padding: '15px',height:'30px' }">
<el-form :inline="true" :model="formInline" class="demo-form-inline">
<el-form-item label="用户名">
<el-input v-model="formInline.username" placeholder="用户名"></el-input>
</el-form-item>
<el-form-item label="手机号">
<el-input v-model="formInline.phone" placeholder="手机号"></el-input>
</el-form-item>
<el-form-item>
<el-button type="primary" @click="onSubmit">查询</el-button>
</el-form-item>
</el-form>
</el-card>
<!--表格数据卡片-->
<el-card class="box-card">
<el-table :data="userList" style="width: 100%">
<el-table-column type="selection" width="55"></el-table-column>
<el-table-column prop="id" label="编号" width="75"></el-table-column>
<el-table-column prop="username" label="用户名" width="100"></el-table-column>
<el-table-column prop="password" label="密码" width="100"></el-table-column>
<el-table-column prop="phone" label="手机号" width="140"></el-table-column>
<el-table-column prop="createTime" label="注册时间" width="180"></el-table-column>
<el-table-column prop="money" label="余额" width="140"></el-table-column>
<el-table-column prop="sex" label="性别" width="100"></el-table-column>
<el-table-column label="操作">
<template slot-scope="scope">
<el-button
size="mini"
@click="handleEdit(scope.$index, scope.row)">编辑</el-button>
<el-button
size="mini"
type="danger"
@click="handleDelete(scope.$index, scope.row)">删除</el-button>
</template>
</el-table-column>
</el-table>
</el-card>
<!--分页卡片-->
<el-card class="box-card" :body-style="{ padding: '15px',height:'30px'}">
<el-pagination
@size-change="handleSizeChange"
@current-change="handleCurrentChange"
:current-page="currentPage4"
:page-sizes="[100, 200, 300, 400]"
:page-size="100"
layout="total, sizes, prev, pager, next, jumper"
:total="400">
</el-pagination>
</el-card>
</div>
</template>
<script>
import axios from 'axios'
export default {
name:"User",
data(){
return {
formInline: {
username: '',
phone: ''
},
userList: [{
id: '',
username: '',
password: '',
phone: '',
createTime: '',
money: null,
sex: '',
}]
}
},
methods: {
findAll(){
axios.get('/findAll')
.then(res => {
if (res.code == 2000) {
this.userList = res.data
}
})
}
}
,
mounted() {
this.findAll()
}
}
</script>
<style scoped>
.box-card {
width: 100%;
margin-top: 10px;
}
</style>
ps: 日期演示问题,后端可以将日期注解换成@JsonFormat(pattern = “yyyy-MM-dd”)即可
4.8 分页展现
修改UserView页面的js代码
<script>
import axios from 'axios'
export default {
name:"User",
data(){
return {
formInline: {
username: '',
phone: ''
},
userList: [{
id: '',
username: '',
password: '',
phone: '',
createTime: '',
money: null,
sex: '',
}],
currentPage:1,// 当前页面
total:0, // 总条数
pageNum:1,// 当前页面
pageSize:5// 每页大小
}
},
methods: {
findAll(pageNum,pageSize){
axios.get('/findAll',{
params:{
pageNum:pageNum,
pageSize:pageSize
}
}).then(res => {
if (res.code == 2000) {
console.log(res.data)// 返回的是后端返回的PageInfo
this.userList = res.data.list
this.total = res.data.total
this.pageNum = res.data.pageNum
}
}).catch(error => {
console.log('请求查询全部报错: ',error)
})
},
onSubmit(){},
handleSizeChange(val) { // 处理页面大小改变时触发
this.pageSize = val;
this.findAll(this.pageNum,val)
},
handleCurrentChange(val) {// 当前页码改变时触发
this.pageNum = val;
this.findAll(val,this.pageSize)
}
},
mounted() {
this.findAll(1,5) // 初始时查询,第1页,每页5条
}
}
</script>
4.9 模糊查询
页面上面设置搜索和重置按钮
js中设置事件,搜索
后端SpringBoot要设置动态sql
.data.total
this.pageNum = res.data.pageNum
}
}).catch(error => {
console.log('请求查询全部报错: ',error)
})
},
onSubmit(){},
handleSizeChange(val) { // 处理页面大小改变时触发
this.pageSize = val;
this.findAll(this.pageNum,val)
},
handleCurrentChange(val) {// 当前页码改变时触发
this.pageNum = val;
this.findAll(val,this.pageSize)
}
},
mounted() {
this.findAll(1,5) // 初始时查询,第1页,每页5条
}
}
## 4.9 模糊查询
页面上面设置搜索和重置按钮
[外链图片转存中...(img-2XjszJ6V-1721010967411)]
js中设置事件,搜索
[外链图片转存中...(img-gBYMYmQv-1721010967411)]
后端SpringBoot要设置动态sql
[外链图片转存中...(img-YlU7dO6p-1721010967412)]