Element UI+Spring Boot进行CRUD的实例-编程知识

一、前端配置

安装axios

axios官网
axios中文文档
安装指令：npm install axios

二、后端配置

springboot3
mybatis-plus 官网安装教程
MySQL数据库
数据库book表的结构如下图

效果图

crud-query-delete.vue（CRUD实例）页面效果图

crud-update.vue（编辑）页面效果图

crud-insert.vue（添加）页面效果图

项目结构

一、后端

二、前端

三、前端代码

1、crud-query-delete.vue代码

import Vue from 'vue'
import VueRouter from 'vue-router'
import HomeView from '../views/HomeView.vue'
import ElementUI from "@/views/ElementUI.vue";
import PagePath from "@/components/PagePath.vue";
import ElButton from "@/views/el-button.vue";
import ElLink from "@/views/el-link.vue";
import ElRadio from "@/views/el-radio.vue";
import ElRow_elCol from "@/views/el-row_el-col.vue";
import ElContainer from "@/views/el-container.vue";
import ElContainerExample from "@/views/el-container-example.vue";
import ElCheckbox from "@/views/el-checkbox.vue";
import ElInput from "@/views/el-input.vue";
import ElInputNumber from "@/views/el-input-number.vue";
import ElSwitch from "@/views/el-switch.vue";
import ElUpload from "@/views/el-upload.vue";
import ElForm from "@/views/el-form.vue";
import ElSelect from "@/views/el-select.vue";
import ElTable from "@/views/el-table.vue";
import CrudQueryDelete from "@/views/crud-query-delete.vue";
import CrudUpdate from "@/views/crud-update.vue";
import CrudInsert from "@/views/crud-insert.vue";Vue.use(VueRouter)const routes = [{path: PagePath.crud_insert,name: 'crud-insert',component: CrudInsert},{path: PagePath.crud_update,name: 'crud-update',component: CrudUpdate},{path: PagePath.crud_query_delete,name: 'crud-query-delete',component: CrudQueryDelete},{path: PagePath.el_table,name: 'el-table',component: ElTable},{path: PagePath.el_select,name: 'el-select',component: ElSelect},{path: PagePath.el_form,name: 'el-form',component: ElForm},{path: PagePath.el_upload,name: 'el-upload',component: ElUpload},{path: PagePath.el_switch,name: 'el-switch',component: ElSwitch},{path: PagePath.el_input_number,name: 'el-input-number',component: ElInputNumber},{path: PagePath.el_input,name: 'el-input',component: ElInput},{path: PagePath.el_checkbox,name: 'el-checkbox',component: ElCheckbox},{path: PagePath.el_container_example,name: 'el-container-example',component: ElContainerExample},{path: PagePath.el_container,name: 'el-container',component: ElContainer},{path: PagePath.el_row_el_col,name: 'el-row_el-col',component: ElRow_elCol},{path: PagePath.el_radio,name: 'el-link',component: ElRadio},{path: PagePath.el_link,name: 'el-link',component: ElLink},{// path: '/el_button',// path: PagePath.data().el_button,path: PagePath.el_button,name: 'el-button',component: ElButton},{path: '/element_ui',name: 'element-ui',component: ElementUI},{path: '/',name: 'home',component: HomeView},{path: '/about',name: 'about',// route level code-splitting// this generates a separate chunk (about.[hash].js) for this route// which is lazy-loaded when the route is visited.component: () => import(/* webpackChunkName: "about" */ '../views/AboutView.vue')}
]const router = new VueRouter({mode: 'history',base: process.env.BASE_URL,routes
})export default router

2、crud-update.vue代码

<script>
import axios from "axios";
import pagePath from "@/components/PagePath.vue";const BASE_URL = 'http://localhost:8081/book/'export default {name: 'crud_update',created() {let _this = this;axios.get(BASE_URL + 'findById/' + this.$route.query.bookid).then(resp => {console.log(resp.data)_this.book = resp.data})},data() {return {book: {bookid: 0,name: '',price: 0,},rules: {name: [{required: true, message: '请输入名称', trigger: 'blur'},{min: 1, max: 10, message: '长度在 1 到 10 个字符', trigger: 'blur'}],}}},methods: {submitForm(book) {let _this = this//这个是全局的this.$refs[book].validate((valid) => {if (valid) {console.log(this.book);axios.put(BASE_URL + 'update', this.book).then(resp => {if (resp.data) {_this.$alert('《' + _this.book.name + '》修改成功', '提示', {confirmButtonText: '确定',callback: action => {_this.$router.push(pagePath.crud_query_delete)}});}})} else {console.log('error submit!!');return false;}});},},
}</script><template><div class="el_update_root"><el-form ref="form" :model="book" label-width="80px" :rules="rules"><el-form-item label="编号" prop="bookid" :rules="[{required:true, message:'id不能为空'},{type:'number', message: 'id必须为数字'}]"><!--        编号不能修改，只读     --><el-input v-model.number="book.bookid" readonly/></el-form-item><el-form-item label="名称" prop="name"><el-input v-model="book.name" placeholder="请输入名称"/></el-form-item><el-form-item label="价格" prop="price" :rules="[{required:true, message:'价格不能为空'},{type:'number', message: '价格必须为数字'}]"><el-input v-model.number="book.price" placeholder="请输入价格"/></el-form-item><el-form-item><el-button type="primary" @click="submitForm('form')">提交</el-button><el-button>取消</el-button></el-form-item></el-form></div></template><style>
.el_update_root {margin-left: 300px;margin-right: 300px;text-align: left;display: flex;justify-content: center;
}</style>

3、crud_insert.vue代码

<script>
import axios from "axios";
import pagePath from "@/components/PagePath.vue"
const BASE_URL = 'http://localhost:8081/book/'export default {name: 'crud_insert',data() {return {book: {bookid: '',name: '',price: '',},rules: {name: [{required: true, message: '请输入名称', trigger: 'blur'},{min: 1, max: 10, message: '长度在 1 到 10 个字符', trigger: 'blur'}],}}},methods: {submitForm(book) {let _this = this//这个是全局的this.$refs[book].validate((valid) => {if (valid) {console.log(this.book);axios.post(BASE_URL + 'add', this.book).then(resp => {if (resp.data) {_this.$alert('《' + _this.book.name + '》添加成功', '提示', {confirmButtonText: '确定',callback: action => {_this.$router.push(pagePath.crud_query_delete)}});}})} else {console.log('error submit!!');return false;}});},},
}</script><template><div class="el_insert_root"><el-form ref="form" :model="book" label-width="80px" :rules="rules"><el-form-item label="编号" prop="bookid" :rules="[{required:true, message:'id不能为空'},{type:'number', message: 'id必须为数字'}]"><!--        编号不能修改，只读     --><el-input v-model.number="book.bookid" placeholder="请输入编号"/></el-form-item><el-form-item label="名称" prop="name"><el-input v-model="book.name" placeholder="请输入名称"/></el-form-item><el-form-item label="价格" prop="price" :rules="[{required:true, message:'价格不能为空'},{type:'number', message: '价格必须为数字'}]"><el-input v-model.number="book.price" placeholder="请输入价格"/></el-form-item><el-form-item><el-button type="primary" @click="submitForm('form')">提交</el-button><el-button>取消</el-button></el-form-item></el-form></div></template><style>
.el_insert_root {margin-left: 300px;margin-right: 300px;text-align: left;display: flex;justify-content: center;
}</style>