从零完成vue搭建element-ui前端项目，对接后端springboot项目

小鱼儿 2022-12-26 11:22 196阅读 0赞

### 1.安装环境node ###

首先：先从nodejs.org中下载nodejs，选择对应的下载即可。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70][]

双击安装，在安装界面一直Next

![20201205123425675.png][]

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查看安装的版本号

![20201205123955636.png][]

**使用淘宝NPM****镜像**

大家都知道国内直接使用npm 的官方镜像是非常慢的，这里推荐使用淘宝 NPM 镜像。

$  npm  install  -g  npm  --registry=https://registry.npm.taobao.org

这样就可以使用npm 命令来安装模块了：

### 2.安装vue的脚手架 ###

npm install vue-cli -g      //全局安装 vue-cli

安装完成查看vue的版本

![20201205124003946.png][]

### 3.创建vue项目 ###

vue create    vue-ant demo(项目名称，任意)

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70 3][]

### 4.使用vscode打开项目，先npm install 安装依赖，然后npm run serve启动项目 ###

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最后访问：[http://localhost:8081/][http_localhost_8081]   项目创建成功。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70 5][]

### 5.引入element-ui，npm i element-ui -S ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70 6][]

### 6.在main.js中引入element-ui ###

// 引入element-ui
    
    import ElementUI from 'element-ui'
    
    import 'element-ui/lib/theme-chalk/index.css'
    
    Vue.use(ElementUI)

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70 7][]

### 7.[https://element.eleme.cn/\#/zh-CN/component/table][https_element.eleme.cn_zh-CN_component_table] 在组件库找到对应的组件即可，这里使用table组件。 ###

<template>
      <div>
        <h1>使用element-ui的表格</h1>
        <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>
      </div>
    </template>
    
    <script>
    export default {
      name: 'HelloWorld',
      props: {
        msg: String
      },
      data() {
          return {
            tableData: [{
              date: '2016-05-03',
              name: '王小虎',
              address: '上海市普陀区金沙江路 1518 弄'
            }, {
              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 1518 弄'
            }, {
              date: '2016-05-01',
              name: '王小虎',
              address: '上海市普陀区金沙江路 1518 弄'
            }, {
              date: '2016-05-08',
              name: '王小虎',
              address: '上海市普陀区金沙江路 1518 弄'
            }, {
              date: '2016-05-06',
              name: '王小虎',
              address: '上海市普陀区金沙江路 1518 弄'
            }, {
              date: '2016-05-07',
              name: '王小虎',
              address: '上海市普陀区金沙江路 1518 弄'
            }],
            multipleSelection: []
          }
        },
    
        methods: {
          
        }
    }
    </script>
    
    
    <style scoped>
    h3 {
      margin: 40px 0 0;
    }
    ul {
      list-style-type: none;
      padding: 0;
    }
    li {
      display: inline-block;
      margin: 0 10px;
    }
    a {
      color: #42b983;
    }
    </style>

### 8.启动查看页面效果 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70 8][]

### 9.这里表格的数据是固定的数据，接下来对接后端，获取动态的真实数据，首先先集成axios。npm i axios ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70 9][]

**9.1 http.js（和main.js同目录）**

import axios from 'axios'
      
      const http = axios.create({
        baseURL: "http://localhost:8080"
      })
      
      export  default http

**9.2 在main.js引入http.js**

import http from './http.js'
    
    Vue.prototype.$http = http

### 10.将表格的数据置空，连接后端返回数据 ###

getUserInfo() {
            this.$http.get('/vue').then((result) => {
              console.log("获取的后端数据:", result);
              // 将获取的后端数据复制给表格的数据
              this.tableData = result.data;
            }).catch((err) => {
              console.log("获取的后端数据出错:", err);
            });
    
    
    // 进入页面就加载数据
    
    mounted() {
          this.getUserInfo();
        },

### 11.springboot使用jpa返回简单的数据 ###

实体类

package com.frank.jpaBatchSave.entity;
    
    import lombok.Data;
    
    import javax.persistence.Entity;
    import javax.persistence.GeneratedValue;
    import javax.persistence.Id;
    import java.time.LocalDate;
    
    /**
     * @author 小石潭记
     * @date 2020/12/5 17:52
     * @Description: ${todo}
     */
    @Entity
    @Data
    public class VueUser {
    
        @Id
        @GeneratedValue
        private Long id;
    
        private String name;
    
        private String address;
    
        private LocalDate date;
    }

repository

package com.frank.jpaBatchSave.repository;
    
    import com.frank.jpaBatchSave.entity.User;
    import com.frank.jpaBatchSave.entity.VueUser;
    import org.springframework.data.jpa.repository.Modifying;
    import org.springframework.data.jpa.repository.Query;
    import org.springframework.data.repository.PagingAndSortingRepository;
    import org.springframework.data.repository.query.Param;
    import org.springframework.stereotype.Repository;
    import org.springframework.transaction.annotation.Transactional;
    
    import java.util.List;
    
    /**
     * @author 小石潭记
     */
    @Repository
    public interface VueUserRepository extends PagingAndSortingRepository<VueUser, Long> {
    
    }

controller

package com.frank.jpaBatchSave.web;
    
    import com.frank.jpaBatchSave.entity.VueUser;
    import com.frank.jpaBatchSave.repository.VueUserRepository;
    import com.google.common.collect.Lists;
    import org.apache.commons.collections4.IteratorUtils;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.CrossOrigin;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    import java.util.List;
    
    /**
     * @author 小石潭记
     * @date 2020/12/5 17:54
     * @Description: ${todo}
     */
    @RestController
    @RequestMapping("/vue")
    @CrossOrigin
    public class VueUserController {
    
        @Autowired
        private VueUserRepository repository;
    
        @GetMapping
        public List<VueUser> index() {
            Iterable<VueUser> all = repository.findAll();
            return Lists.newArrayList(all);
        }
    
    }

数据库数据

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70 10][]

### 12.启动前端项目查看效果 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70 11][]

至此vue使用element-ui连接后端springboot获取数据已完成。

### 13.axios使用post提交数据，坑有点小多0.0 ###

定义一个保存用户的方法，这里定义的是固定的数据，就没有使用页面提交表单了0.0

这里需要指定

headers: \{  
                'Content-Type': 'application/json; charset=UTF-8'  
            \},

默认是Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported.

saveUser() {
            let user = {
              name: '趵突泉',
              date: '2020-10-10',
              address: '山东省济南市趵突泉街101号'
            };
            
            this.$http({
                url: '/vue/save',
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json; charset=UTF-8'
                },
                data: user
            }).then(res => {
                console.log("插入数据成功:", res);
                this.getUserInfo();
            }).catch(err => {
                console.log("插入数据失败:", err);
            })
          }

后端接口，注意使用@RequestBody接收前端传递的对象

@PostMapping("/save")
        public String saveUser(@RequestBody VueUser user) {
            if (user.getName() != null) {
                repository.save(user);
                return "save success";
            }
            throw new MyException(USER_INFO_ERROR);
        }

同样的在mounted里面调用该方法，查看效果

mounted() {
          this.getUserInfo();
          this.saveUser();
        },

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70 12][]

每刷新一次页面，就会添加一次数据，插入成功！

### 14.router路由添加 ###

**npm install vue-router 添加依赖**

**src下面创建router文件夹->router.js**

// 配置路由相关的信息
    import VueRouter from 'vue-router'
    import Vue from 'vue'
     
    import Index from '../components/Index.vue'
    import UserInfo from '../components/UserInfo.vue'
     
    // 1.通过Vue.use(插件), 安装插件
    Vue.use(VueRouter)
     
    // 2.创建VueRouter对象
    const routes = [
      {
        path: '',
        // redirect重定向
        redirect: '/index'
      },
      {
        path: '/index',
        component: Index
      },
      {
        path: '/user-info',
        component: UserInfo
      }
    ]
    const router = new VueRouter({
      // 配置路由和组件之间的应用关系
      routes,
      mode: 'history',
      linkActiveClass: 'active'
    })
     
    // 3.将router对象传入到Vue实例
    export default router

main.js里面引入router

import Vue from 'vue'
    import App from './App.vue'
    // 引入element-ui
    import ElementUI from 'element-ui'
    import 'element-ui/lib/theme-chalk/index.css'
    // 引入路由
    import router from './router/router'
    
    import http from './http.js'
    
    Vue.prototype.$http = http
    
    Vue.use(ElementUI)
    
    Vue.config.productionTip = false
    
    new Vue({
      // 引入路由
      router,
      render: h => h(App),
    }).$mount('#app')

**app.vue里面修改成 <router-view></router-view>**

### 15.新建新的页面Index ###

<template>
      <div>
        <h1>首页</h1>
        <el-button type="primary" @click="jumpUserInfo" style="margin-bottom: 25px">查看用户列表</el-button>
        <el-carousel indicator-position="outside">
          <el-carousel-item v-for="item in recordList" :key="item">
            <h3>{
       { item }}</h3>
          </el-carousel-item>
        </el-carousel>
    
        <el-carousel :interval="3000" type="card" height="200px">
          <el-carousel-item v-for="item in imagebox" :key="item.id">
            <img :src="item.idView" class="image">
            <span>{
       {item.text}}</span>
          </el-carousel-item>
        </el-carousel>
      </div>
    </template>
    
    <script>
    
    export default {
      name: 'Index',
      props: {
        msg: String
      },
      data() {
          return {
            recordList: [
              '春', '夏', '秋', '冬'
            ],
            imagebox:[
              {
                id:1,
                text: '春天',
                idView:require('../assets/imagebox/1.jpg')
              },
              {
                id:2,
                text: '夏天',
                idView:require('../assets/imagebox/2.jpg')
              },
              {
                id:3,
                text: '秋天',
                idView:require('../assets/imagebox/3.jpg')
              },
              {
                id:4,
                text: '冬天',
                idView:require('../assets/imagebox/4.jpg')
              }
              //imagebox是assets下一个放图片的文件夹
            ]
          }
        },
    
        methods: {
         jumpUserInfo() {
           this.$router.push("/user-info");
         }
        },
    
        mounted() {
         
        },
    }
    </script>
    
    
    <style scoped>
    .el-carousel__item h3 {
        color: #475669;
        font-size: 18px;
        opacity: 0.75;
        line-height: 300px;
        margin: 0;
      }
      
      .el-carousel__item:nth-child(2n) {
        background-color: #99a9bf;
      }
      
      .el-carousel__item:nth-child(2n+1) {
        background-color: #d3dce6;
      }
    </style>

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70 13][]

点击按钮，跳转页面userInfo页面

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70 14][]

### 16.使用store模块 ###

npm install vuex

![20201206110700348.png][]

创建store文件夹，store.js和在modules对面页面的js

index.js

const state = {
        stateA: '首页的state'
      }
      
      const mutations = {
        showA (state) {
          return state.stateA
        }
      }
      
      const actions = {
        showAAction (context) {
          context.commit('showA')
        }
      }
      
      const getters = {
        getA (state) {
          return state.stateA
        }
      }
      export default {state, mutations, actions, getters}

user-info.js

const state = {
        stateB: '用户列表的state'
      }
      
      const mutations = {
        showB (state) {
          return state.stateB
        }
      }
      
      const actions = {
        showBAction (context) {
          context.commit('showB')
        }
      }
      
      const getters = {
        getB (state) {
          return state.stateB
        }
      }
      
      export default {state, mutations, actions, getters}

store.js  注入上面的两个模块的js

import Vue from 'vue'
    import Vuex from 'vuex'
    import Index from './modules/index'
    import UserInfo from './modules/user-info'
    
    Vue.use(Vuex)
    
    const store = new Vuex.Store({
        modules: {
            Index,
            UserInfo
        }
    })
    
    export default store

main.js 引入store.js

import Vue from 'vue'
    import App from './App.vue'
    // 引入element-ui
    import ElementUI from 'element-ui'
    import 'element-ui/lib/theme-chalk/index.css'
    import router from './router/router'
    import store from './store/store'
    
    import http from './http.js'
    
    Vue.prototype.$http = http
    
    Vue.use(ElementUI)
    
    Vue.config.productionTip = false
    
    new Vue({
      router,
      store,
      render: h => h(App),
    }).$mount('#app')

页面index使用state

import { mapState } from 'vuex'

computed: {
          ...mapState({
            index:  state => state.Index.stateA
          })
        }

<h2>{
       {index}}</h2>

查看页面的效果，成功使用了index.js里面的state的属性stateA，action同理使用，用户列表的js同理使用。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70 15][]

[前端项目下载][Link 1]

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[20201205123425675.png]: https://img-blog.csdnimg.cn/20201205123425675.png
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[20201205123955636.png]: https://img-blog.csdnimg.cn/20201205123955636.png
[20201205124003946.png]: https://img-blog.csdnimg.cn/20201205124003946.png
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[http_localhost_8081]: http://localhost:8081/
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2_size_16_color_FFFFFF_t_70 6]: https://img-blog.csdnimg.cn/20201205173132698.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzMzcxNzY2,size_16,color_FFFFFF,t_70
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[https_element.eleme.cn_zh-CN_component_table]: https://element.eleme.cn/#/zh-CN/component/table
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[20201206110700348.png]: https://img-blog.csdnimg.cn/20201206110700348.png
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[Link 1]: https://github.com/ChenXbFrank/vue-study