Element UI+Spring Boot进行CRUD的实例

一、前端配置

安装axios

Gitee的axios介绍与使用
GitHub的axios介绍与使用
方式一：使用npm安装

$ npm install axios
方式二：用 bower:

$ bower install axios
方式三：使用 cdn方式

<script src="https://unpkg.com/axios/dist/axios.min.js"></script>

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>