SpringBoot2+Vue2实战(三)SpringBoot集成Mybatis-plus，用vue实现crud

其他 2023-07-16 06:18:22 阅读次数: 0

一、MybatisPlus功能实现

集成：

pom.xml

<!-- mybatis-plus -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.5.1</version>
        </dependency>

MybatisConfig


import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class MybatisPlusConfig {

    // 最新版
    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
        return interceptor;
    }

}

User


@Data
@TableName("sys_user")
public class User {


    @TableId(type = IdType.AUTO)
    private Integer id;

    private String username;

    private String nickname;

    private String address;

    @JsonIgnore
    private String password;

    private String email;

    private String phone;

    private Date createTime;

    @TableField(value = "avatar_url")  // 指定数据库的字段名称
    private String avatar;
}

UserMapper

public interface UserMapper extends BaseMapper<User> {
  
}

UserController

@RestController
@RequestMapping("/user")
public class UserController {

    @Resource
    private UserService userService;

    //修改或增加
    @PostMapping("/saveUser")
    public boolean saveUser(@RequestBody User user){
        //新增或修改
        return userService.saveUser(user);
    }

    @GetMapping("/findAll")
    public List<User> findAll(){
        return userService.list();
    }

    @DeleteMapping("/{id}")
    public boolean delete(@PathVariable("id") Integer id){
        return userService.removeById(id);
    }

    //分页查询
    //接口路径 /user/selectPage?pageNum = 1 &pageSize = 10
    //@RequestParam 接收
    //limit第一个参数 = (pageNum - 1)*pageSize
    //pageSize
   /* @GetMapping("/selectPage")
    public Map<String, Object> selectPage(@RequestParam String username, @RequestParam Integer pageSize, @RequestParam Integer pageNum) {
        pageNum = (pageNum - 1) * pageSize;
        username = "%" + username + "%";
        List<User> data = userService.selectPage(pageNum, pageSize, username);
        Integer total = userService.selectTotal(username);
        Map<String, Object> res = new HashMap<>();
        res.put("data", data);
        res.put("total", total);
        return res;
    }*/

    //分页查询 mybatis-plus方式
    @GetMapping("/selectPage")
    public IPage<User> selectPage(@RequestParam(defaultValue = "") String username,
                                  @RequestParam Integer pageSize,
                                  @RequestParam Integer pageNum,
                                  @RequestParam(defaultValue = "") String email,
                                  @RequestParam(defaultValue = "") String address) {

        IPage<User> page = new Page<>(pageNum,pageSize);
        QueryWrapper<User> queryWrapper = new QueryWrapper<>();
        if (!"".equals(username)){
            queryWrapper.like("username",username);
        }
        if (!"".equals(email)){
            queryWrapper.like("email",email);

        }
        if (!"".equals(address)){
            queryWrapper.like("address",address);
        }
        return userService.page(page,queryWrapper);
    }
}

UserService


public interface UserService extends IService<User> {

    boolean saveUser(User user);
}

UserServiceImpl

@Service
public class UserServiceImpl extends ServiceImpl<UserMapper,User> implements UserService {

    @Resource
    private UserMapper userMapper;

    @Override
    public boolean saveUser(User user) {
       return saveOrUpdate(user);
    }
}

二、vue功能实现

分页查询：

request.js（封装axios）

import axios from 'axios'

const request = axios.create({
    baseURL: '/api',
    timeout: 5000
})

// request 拦截器
// 可以自请求发送前对请求做一些处理
// 比如统一加token，对请求参数统一加密
request.interceptors.request.use(config => {
    config.headers['Content-Type'] = 'application/json;charset=utf-8';

    // config.headers['token'] = user.token;  // 设置请求头
    return config
}, error => {
    return Promise.reject(error)
});

// response 拦截器
// 可以在接口响应后统一处理结果
request.interceptors.response.use(
    response => {
        let res = response.data;
        // 如果是返回的文件
        if (response.config.responseType === 'blob') {
            return res
        }
        // 兼容服务端返回的字符串数据
        if (typeof res === 'string') {
            res = res ? JSON.parse(res) : res
        }
        return res;
    },
    error => {
        console.log('err' + error) // for debug
        return Promise.reject(error)
    }
)


export default request

main.js

import request from "@/utils/request";

Vue.prototype.request = request
//搜索框

<div style="margin: 10px 0">
          <el-input style="width: 200px" placeholder="请输入名称" suffix-icon="el-icon-search"
                    v-model="username"></el-input>
          <el-input style="width: 200px" placeholder="请输入邮箱" suffix-icon="el-icon-message"
                    v-model="email" class="ml-5"></el-input>
          <el-input style="width: 200px" placeholder="请输入地址" suffix-icon="el-icon-position"
                    v-model="address" class="ml-5"></el-input>
          <el-button class="ml-5" type="primary" @click="load">搜索</el-button>
          <el-button class="ml-5" type="warning" @click="reset">重置</el-button>
        </div>


//导入包

import request from "@/utils/request";


//加参数
data() {
    return {
      tableData: [],
      total: 0,
      pageNum: 1,
      pageSize: 2,
      username: "",
      email: "",
      address: "",
      msg: "hello world",
      collapseBtnClass: 'el-icon-s-fold',
      isCollapse: false,
      sideWidth: 200,
      logoTextShow: true,
      headerBg: 'headerBg'
    }
  },


//重写查询方法

load() {
      request.get("http://localhost:9090/user/selectPage", {
        params: {
          pageNum: this.pageNum,
          pageSize: this.pageSize,
          username: this.username,
          address: this.address,
          email: this.email
        }
      }).then(res => {
        console.log(res)
        this.tableData = res.records
        this.total = res.total
      })

    },

//重置方法
reset(){
      this.username=""
      this.email=""
      this.address=""
    },

新增数据：

<el-button type="primary" @click="handleAdd">新增 <i class="el-icon-circle-plus-outline"></i></el-button>



<!--新增表单-->
        <el-dialog title="用户信息" :visible.sync="dialogFormVisible" width="30%" >
          <el-form label-width="80px" size="small">
            <el-form-item label="用户名">
              <el-input v-model="form.username" autocomplete="off"></el-input>
            </el-form-item>
            <el-form-item label="昵称">
              <el-input v-model="form.nickname" autocomplete="off"></el-input>
            </el-form-item>
            <el-form-item label="邮箱">
              <el-input v-model="form.email" autocomplete="off"></el-input>
            </el-form-item>
            <el-form-item label="电话">
              <el-input v-model="form.phone" autocomplete="off"></el-input>
            </el-form-item>
            <el-form-item label="地址">
              <el-input v-model="form.address" autocomplete="off"></el-input>
            </el-form-item>
          </el-form>
          <div slot="footer" class="dialog-footer">
            <el-button @click="dialogFormVisible = false">取 消</el-button>
            <el-button type="primary" @click="save">确 定</el-button>
          </div>
        </el-dialog>



data() {
    return {
      dialogFormVisible:false,
      tableData: [],
      total: 0,
      pageNum: 1,
      pageSize: 2,
      form:{

      },
      username: "",
      email: "",
      address: "",
      msg: "hello world",
      collapseBtnClass: 'el-icon-s-fold',
      isCollapse: false,
      sideWidth: 200,
      logoTextShow: true,
      headerBg: 'headerBg'
    }
  }，



//新增方法
    handleAdd(){
      this.dialogFormVisible=true
      this.form={}
    },
    save(){
      request.post("http://localhost:9090/user/saveUser",this.form).then(res=>{
        if (res){
          this.$message.success("保存成功")
          this.dialogFormVisible=false
        }else {
          this.$message.error("保存失败")
          this.dialogFormVisible=false
        }
      })
    },

修改数据：

<el-button type="success" @click="handleEdit(scope.row)">编辑 <i class="el-icon-edit"></i></el-button>


/*编辑方法*/
    handleEdit(row) {
      this.form = JSON.parse(JSON.stringify(row))
      this.dialogFormVisible = true
    },

删除数据：

<el-button type="success" @click="handleEdit(scope.row)">编辑 <i class="el-icon-edit"></i></el-button>
                <el-popconfirm
                    confirm-button-text='确定'
                    cancel-button-text='我再想想'
                    icon="el-icon-info"
                    icon-color="red"
                    title="这是一段内容确定删除吗？"
                    @confirm="del(scope.row.id)"
                >

              <el-button type="danger" slot="reference" class="ml-5">删除 <i class="el-icon-remove-outline"></i></el-button>
                </el-popconfirm>



 //删除方法
    del(id) {
      request.delete("/user/" + id).then(res => {
        if (res) {
          this.$message.success("删除成功")
          this.load()
        } else {
          this.$message.error("删除失败")
        }
      })
    },

批量删除：

UserController


    //批量删除
    @PostMapping("/del/batch")
    public boolean deleteBatch(@RequestBody List<Integer> ids){
        return userService.removeBatchByIds(ids);
    }
<el-popconfirm
              class="ml-5"
              confirm-button-text='确定'
              cancel-button-text='我再想想'
              icon="el-icon-info"
              icon-color="red"
              title="这是一段内容确定删除吗？"
              @confirm="delBatch"
          >
            <el-button type="danger" slot="reference">批量删除 <i class="el-icon-remove-outline"></i></el-button>
          </el-popconfirm>


//批量删除
    delBatch() {
      //把对象的数组变成纯id数组
      let ids = this.multipleSelection.map(v => v.id)
      request.post("/user/del/batch", ids).then(res => {
        if (res) {
          this.$message.success("删除成功")
          this.load()
        } else {
          this.$message.error("删除失败")
        }
      })
    },

Home.VUE

<template>
  <el-container style="min-height: 100vh">

    <el-aside :width="sideWidth + 'px'" style="box-shadow: 2px 0 6px rgb(0 21 41 / 35%);">
      <el-menu :default-openeds="['1', '3']" style="min-height: 100%; overflow-x: hidden"
               background-color="rgb(48, 65, 86)"
               text-color="#fff"
               active-text-color="#ffd04b"
               :collapse-transition="false"
               :collapse="isCollapse"
      >
        <div style="height: 60px; line-height: 60px; text-align: center">
          <img src="../assets/logo.png" alt="" style="width: 20px; position: relative; top: 5px; right: 5px">
          <b style="color: white" v-show="logoTextShow">后台管理系统</b>
        </div>
        <el-submenu index="1">
          <template slot="title">
            <i class="el-icon-message"></i>
            <span slot="title">导航一</span>
          </template>
          <el-menu-item-group title="分组2">
            <el-menu-item index="1-3">选项3</el-menu-item>
          </el-menu-item-group>
          <el-submenu index="1-4">
            <template slot="title">选项4</template>
            <el-menu-item index="1-4-1">选项4-1</el-menu-item>
          </el-submenu>
        </el-submenu>
        <el-submenu index="2">
          <template slot="title">
            <i class="el-icon-menu"></i>
            <span slot="title">导航二</span>
          </template>
          <el-submenu index="2-4">
            <template slot="title">选项4</template>
            <el-menu-item index="2-4-1">选项4-1</el-menu-item>
          </el-submenu>
        </el-submenu>
        <el-submenu index="3">
          <template slot="title">
            <i class="el-icon-setting"></i>
            <span slot="title">导航三</span>
          </template>
          <el-submenu index="3-4">
            <template slot="title">选项4</template>
            <el-menu-item index="3-4-1">选项4-1</el-menu-item>
          </el-submenu>
        </el-submenu>
      </el-menu>
    </el-aside>

    <el-container>
      <el-header style="font-size: 12px; border-bottom: 1px solid #ccc; line-height: 60px; display: flex">
        <div style="flex: 1; font-size: 20px">
          <span :class="collapseBtnClass" style="cursor: pointer" @click="collapse"></span>
        </div>
        <el-dropdown style="width: 70px; cursor: pointer">
          <span>王小虎</span><i class="el-icon-arrow-down" style="margin-left: 5px"></i>
          <el-dropdown-menu slot="dropdown">
            <el-dropdown-item style="font-size: 14px; padding: 5px 0">个人信息</el-dropdown-item>
            <el-dropdown-item style="font-size: 14px; padding: 5px 0">退出</el-dropdown-item>
          </el-dropdown-menu>
        </el-dropdown>

      </el-header>

      <el-main>
        <div style="margin-bottom: 30px">
          <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
          </el-breadcrumb>
        </div>

        <div style="margin: 10px 0">
          <el-input style="width: 200px" placeholder="请输入名称" suffix-icon="el-icon-search"
                    v-model="username"></el-input>
          <el-input style="width: 200px" placeholder="请输入邮箱" suffix-icon="el-icon-message"
                    v-model="email" class="ml-5"></el-input>
          <el-input style="width: 200px" placeholder="请输入地址" suffix-icon="el-icon-position"
                    v-model="address" class="ml-5"></el-input>
          <el-button class="ml-5" type="primary" @click="load">搜索</el-button>
          <el-button class="ml-5" type="warning" @click="reset">重置</el-button>
        </div>

        <div style="margin: 10px 0">
          <el-button type="primary" @click="handleAdd">新增 <i class="el-icon-circle-plus-outline"></i></el-button>
          <el-popconfirm
              class="ml-5"
              confirm-button-text='确定'
              cancel-button-text='我再想想'
              icon="el-icon-info"
              icon-color="red"
              title="这是一段内容确定删除吗？"
              @confirm="delBatch"
          >
            <el-button type="danger" slot="reference">批量删除 <i class="el-icon-remove-outline"></i></el-button>
          </el-popconfirm>
          <el-button type="primary" class="ml-5">导入 <i class="el-icon-bottom"></i></el-button>
          <el-button type="primary">导出 <i class="el-icon-top"></i></el-button>
        </div>

        <el-table :data="tableData" border stripe :header-cell-class-name="headerBg"
                  @selection-change="handleSelectionChange">
          <el-table-column
              type="selection"
              width="55">
          </el-table-column>
          <el-table-column prop="id" label="ID" width="80"></el-table-column>
          <el-table-column prop="username" label="用户名" width="140"></el-table-column>
          <el-table-column prop="nickname" label="昵称" width="120"></el-table-column>
          <el-table-column prop="email" label="邮箱"></el-table-column>
          <el-table-column prop="phone" label="电话"></el-table-column>
          <el-table-column prop="address" label="地址"></el-table-column>
          <el-table-column label="操作" width="200" align="center">
            <template slot-scope="scope">
              <el-button type="success" @click="handleEdit(scope.row)">编辑 <i class="el-icon-edit"></i></el-button>
                <el-popconfirm
                    confirm-button-text='确定'
                    cancel-button-text='我再想想'
                    icon="el-icon-info"
                    icon-color="red"
                    title="这是一段内容确定删除吗？"
                    @confirm="del(scope.row.id)"
                >

              <el-button type="danger" slot="reference" class="ml-5">删除 <i class="el-icon-remove-outline"></i></el-button>
                </el-popconfirm>
            </template>
          </el-table-column>
        </el-table>
        <div style="padding: 10px 0">
          <el-pagination
              @size-change="handleSizeChange"
              @current-change="handleCurrentChange"
              :current-page="pageNum"
              :page-sizes="[2, 5, 10, 20]"
              :page-size="pageSize"
              layout="total, sizes, prev, pager, next, jumper"
              :total="total">
          </el-pagination>
        </div>

        <!--新增表单-->
        <el-dialog title="用户信息" :visible.sync="dialogFormVisible" width="30%">
          <el-form label-width="80px" size="small">
            <el-form-item label="用户名">
              <el-input v-model="form.username" autocomplete="off"></el-input>
            </el-form-item>
            <el-form-item label="昵称">
              <el-input v-model="form.nickname" autocomplete="off"></el-input>
            </el-form-item>
            <el-form-item label="邮箱">
              <el-input v-model="form.email" autocomplete="off"></el-input>
            </el-form-item>
            <el-form-item label="电话">
              <el-input v-model="form.phone" autocomplete="off"></el-input>
            </el-form-item>
            <el-form-item label="地址">
              <el-input v-model="form.address" autocomplete="off"></el-input>
            </el-form-item>
          </el-form>
          <div slot="footer" class="dialog-footer">
            <el-button @click="dialogFormVisible = false">取 消</el-button>
            <el-button type="primary" @click="save">确 定</el-button>
          </div>
        </el-dialog>
      </el-main>

    </el-container>
  </el-container>
</template>

<script>

import request from "@/utils/request";

export default {
  name: 'Home',
  data() {
    return {
      dialogFormVisible: false,
      multipleSelection: [],
      tableData: [],
      total: 0,
      pageNum: 1,
      pageSize: 2,
      form: {},
      username: "",
      email: "",
      address: "",
      msg: "hello world",
      collapseBtnClass: 'el-icon-s-fold',
      isCollapse: false,
      sideWidth: 200,
      logoTextShow: true,
      headerBg: 'headerBg'
    }
  },
  created() {
    // 请求分页查询数据
    this.load()
  },
  methods: {
    collapse() {  // 点击收缩按钮触发
      this.isCollapse = !this.isCollapse
      if (this.isCollapse) {  // 收缩
        this.sideWidth = 64
        this.collapseBtnClass = 'el-icon-s-unfold'
        this.logoTextShow = false
      } else {   // 展开
        this.sideWidth = 200
        this.collapseBtnClass = 'el-icon-s-fold'
        this.logoTextShow = true
      }
    },
    load() {
      request.get("/user/selectPage", {
        params: {
          pageNum: this.pageNum,
          pageSize: this.pageSize,
          username: this.username,
          address: this.address,
          email: this.email
        }
      }).then(res => {
        console.log(res)
        this.tableData = res.records
        this.total = res.total
      })

    },
    reset() {
      this.username = ""
      this.email = ""
      this.address = ""
    },

    //新增方法
    handleAdd() {
      this.dialogFormVisible = true
      this.form = {}
    },
    save() {
      request.post("/user/saveUser", this.form).then(res => {
        if (res) {
          this.$message.success("保存成功")
          this.dialogFormVisible = false
          this.load()
        } else {
          this.$message.error("保存失败")
          this.dialogFormVisible = false
        }
      })
    },

    /*编辑方法*/
    handleEdit(row) {
      this.form = JSON.parse(JSON.stringify(row))
      this.dialogFormVisible = true
    },

    //删除方法
    del(id) {
      request.delete("/user/" + id).then(res => {
        if (res) {
          this.$message.success("删除成功")
          this.load()
        } else {
          this.$message.error("删除失败")
        }
      })
    },
    //批量删除
    delBatch() {
      //把对象的数组变成纯id数组
      let ids = this.multipleSelection.map(v => v.id)
      request.post("/user/del/batch", ids).then(res => {
        if (res) {
          this.$message.success("删除成功")
          this.load()
        } else {
          this.$message.error("删除失败")
        }
      })
    },

    handleSelectionChange(val) {
      console.log(val)
      this.multipleSelection = val
    },

    handleSizeChange(pageSize) {
      console.log(pageSize)
      this.pageSize = pageSize
      this.load()
    },
    handleCurrentChange(pageNum) {
      console.log(pageNum)
      this.pageNum = pageNum
      this.load()
    }
  }
}
</script>

<style>
.headerBg {
  background: #eee !important;
}
</style>

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