Springboot + vue 实现的简单CRUD

前言

• 使用Mybatis-plus 生成重复的代码 参考
• 添加数据封装工具类
• 添加fastjson配置、MybatisPlus分页配置、跨域配置
• vue-cli的配置参考

运行截图

UserController

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

    @Resource
    private IUserService userService;
    

    /**
     * 初始化分页信息
     */
    private void initPage(Map<String,Object> param){
        if(StringUtils.isEmpty(param.get("page"))){
            param.put("page", 1);
        }
        if(StringUtils.isEmpty(param.get("limit"))){
            param.put("limit", 3);
        }
    }

    @GetMapping()
    public Result getList(@RequestParam Map<String,Object> param) {
        initPage(param);
        int num = Integer.parseInt(param.get("page").toString());
        int limit = Integer.parseInt(param.get("limit").toString());
        QueryWrapper<User> wrapper = new QueryWrapper<User>();
        wrapper.like("username", param.get("username"));
        IPage<User> page = new Page<>(num, limit);//参数一是当前页，参数二是每页个数
        return ResultGenerator.getSuccessResult(userService.page(page, wrapper));
    }

    @GetMapping("/{id}")
    public Result getUser(@PathVariable int id) {
        User user = userService.getById(id);
        if (user == null) return ResultGenerator.getFailResult("","无用户记录");
        return ResultGenerator.getSuccessResult(user);
    }

    @PostMapping()
    public Result save(@RequestBody User user){
        //System.out.println(user);
        if(userService.save(user)) return ResultGenerator.getSuccessResult("","插入成功");
        return ResultGenerator.getFailResult("","插入失败");
    }

    @PutMapping("/{id}")
    public Result update(@RequestBody User user,@PathVariable int id){
        user.setId(id);
        //System.out.println(user);
        if(userService.updateById(user)) return ResultGenerator.getSuccessResult("","更新成功");
        return ResultGenerator.getFailResult("","更新失败");
    }

    @DeleteMapping("/{id}")
    public Result del(@PathVariable int id) {
        if(userService.removeById(id)) return ResultGenerator.getSuccessResult("","删除成功");
        return ResultGenerator.getFailResult("","删除失败");
    }
}

路由

• 文件位置router/index.js

import Vue from 'vue'
import VueRouter from 'vue-router'
// 路由懒加载
const Home = () => import('../views/Home.vue')
const Users = () => import('../views/Users.vue')

Vue.use(VueRouter)

const routes = [
  {
    path: '/',
    redirect: '/home'
  },
  {
    path: '/home',
    name: 'Home',
    component: Home,
    redirect: '/users',
    children: [
      { path: '/users', component: Users }
    ]
  }
]

const router = new VueRouter({
  routes
})

export default router

左侧菜单栏

• views/Home.vue

<template>
  <el-container class="home-container">
    
    <el-header>
      <div>
        <img src="../assets/logo.png" alt />
        <span>后台管理系统span>
      div>
      <el-button type="info" @click="logout">退出el-button>
    el-header>
    
    <el-container>
      
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||div>
        
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409EFF"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          :default-active="activePath"
        >
          
          <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
            
            <template slot="title">
              
              <i :class="iconsObj[item.id]">i>
              
              <span>{{item.authName}}span>
            template>

            
            <el-menu-item
              :index="'/' + subItem.path"
              v-for="subItem in item.children"
              :key="subItem.id"
              @click="saveNavState('/' + subItem.path)"
            >
              <template slot="title">
                
                <i class="el-icon-menu">i>
                
                <span>{{subItem.authName}}span>
              template>
            el-menu-item>
          el-submenu>
        el-menu>
      el-aside>
      
      <el-main>
        
        <router-view>router-view>
      el-main>
    el-container>
  el-container>
template>

<script>
export default {
  data() {
    return {
      // 左侧导航栏菜单数据 可以通过token向服务器获取用户的菜单信息（根据角色权限不同）
      menulist: [
        {
          id: 125,
          authName: '用户管理',
          path: 'users',
          children: [
            {
              id: 110,
              authName: '用户列表',
              path: 'users',
              children: [],
              order: null
            }
          ],
          order: 1
        }
      ],
      // 通过
      iconsObj: {
        125: 'el-icon-user'
      },
      // 是否折叠
      isCollapse: false,
      // 被激活的链接地址
      activePath: ''
    }
  },
  created() {
    // this.getMenuList(); 用来获取列表信息
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    // 退出登录
    logout() {
      // window.sessionStorage.clear();
      // this.$router.push("/login");
    },
    // 获取所有的菜单
    // async getMenuList() {

    // },
    // 点击按钮，切换菜单的折叠与展开
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    },
    // 保存链接的激活状态
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    img {
      height: 20px;
      width: 20px;
      margin-left: 20px;
    }
    span {
      margin-left: 15px;
    }
  }
}

.el-aside {
  background-color: #333744;
  .el-menu {
    border-right: none;
  }
}

.el-main {
  background-color: #eaedf1;
}

.iconfont {
  margin-right: 10px;
}

.toggle-button {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
style>

User用户列表

• views/Users.vue

<template>
  <div>
    
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页el-breadcrumb-item>
      <el-breadcrumb-item>用户管理el-breadcrumb-item>
      <el-breadcrumb-item>用户列表el-breadcrumb-item>
    el-breadcrumb>

    
    <el-card>
      
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.username" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList">el-button>
          el-input>
        el-col>
        <el-col :span="8">
          <el-button type="primary" @click="addDialogVisible = true">添加用户el-button>
          
        el-col>
      el-row>

      
      <el-table :data="userlist" border stripe>
        
        <el-table-column type="index">el-table-column>
        <el-table-column label="姓名" prop="username">el-table-column>
        <el-table-column label="密码" prop="password">el-table-column>
        <el-table-column label="性别" prop="sex">
          <template slot-scope="scope">{{ scope.row.sex | sexTrans }}template>
        el-table-column>
        <el-table-column label="birth" prop="birth">el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            
            <el-tooltip effect="dark" content="编辑用户" placement="top" :enterable="false">
              <el-button
                type="primary"
                icon="el-icon-edit"
                size="mini"
                @click="showEditDialog(scope.row.id)"
              >el-button>
            el-tooltip>
            
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            >el-button>
          template>
        el-table-column>
      el-table>

      
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.page"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.limit"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >el-pagination>
    el-card>

    
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      
      <el-form :model="addForm" :rules="FormRules" ref="addFormRef" label-width="90px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username">el-input>
        el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password" show-password>el-input>
        el-form-item>
        <el-form-item label="性别" prop="sex">
           <el-radio-group v-model="addForm.sex">
            <el-radio label="M">男el-radio>
            <el-radio label="F">女el-radio>
           el-radio-group>
        el-form-item>
        <el-form-item label="出生日期" prop="birth">
          <el-date-picker
            v-model="addForm.birth"
            type="date"
            placeholder="选择日期"
            value-format="yyyy-MM-dd">
          el-date-picker>
        el-form-item>
      el-form>
      
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消el-button>
        <el-button type="primary" @click="addUser">确 定el-button>
      span>
    el-dialog>

    
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="FormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled>el-input>
        el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="editForm.password" show-password>el-input>
        el-form-item>
        <el-form-item label="性别" prop="sex">
           <el-radio-group v-model="editForm.sex">
            <el-radio label="M">男el-radio>
            <el-radio label="F">女el-radio>
           el-radio-group>
        el-form-item>
        <el-form-item label="出生日期" prop="birth">
          <el-input v-model="editForm.birth">el-input>
        el-form-item>
      el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消el-button>
        <el-button type="primary" @click="editUserInfo">确 定el-button>
      span>
    el-dialog>
  div>
template>

<script>
export default {
  data() {
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        username: '',
        // 当前的页数
        page: 1,
        // 当前每页显示多少条数据
        limit: 2
      },
      userlist: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        sex: 'M',
        birth: ''
      },
      // 添加表单的验证规则对象
      FormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在3~10个字符之间', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '用户名的长度在6~15个字符之间', trigger: 'blur' }
        ],
        birth: [
          { required: true, message: '请选择出生日期', trigger: 'blur' }
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {}
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.axios.get('users', {
        params: this.queryInfo
      })
      if (res.status !== 200) {
        return this.$message.error('获取用户列表失败！')
      }
      this.userlist = res.data.records
      this.total = parseInt(res.data.total)
    },
    // 监听 limit 改变的事件
    handleSizeChange(newSize) {
      // console.log(newSize)
      this.queryInfo.limit = newSize
      this.getUserList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange(newPage) {
      console.log(newPage)
      this.queryInfo.page = newPage
      this.getUserList()
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async(valid) => {
        if (!valid) return
        // 可以发起添加用户的网络请求
        const { data: res } = await this.axios.post('users', this.addForm)

        if (res.status !== 200) {
          this.$message.error('添加用户失败！')
        }

        this.$message.success('添加用户成功！')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        // 重新获取用户列表数据
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      // console.log(id)
      const { data: res } = await this.axios.get('users/' + id)

      if (res.status !== 200) {
        return this.$message.error('查询用户信息失败！')
      }

      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async(valid) => {
        if (!valid) return
        // 发起修改用户信息的数据请求
        const { data: res } = await this.axios.put(
          'users/' + this.editForm.id, this.editForm
        )

        if (res.status !== 200) {
          return this.$message.error('更新用户信息失败！')
        }

        // 关闭对话框
        this.editDialogVisible = false
        // 刷新数据列表
        this.getUserList()
        // 提示修改成功
        this.$message.success('更新用户信息成功！')
      })
    },
    // 根据Id删除对应的用户信息
    async removeUserById(id) {
      // 弹框询问用户是否删除数据
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch((err) => err)

      // 如果用户确认删除，则返回值为字符串 confirm
      // 如果用户取消了删除，则返回值为字符串 cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }

      const { data: res } = await this.axios.delete('users/' + id)

      if (res.status !== 200) {
        return this.$message.error('删除用户失败！')
      }

      this.$message.success('删除用户成功！')
      this.getUserList()
    }
  },
  filters: {
    sexTrans: (sex) => (sex === 'M' ? '男' : '女')
  }
}
script>

<style lang="less" scoped>
style>

axios获取到的数据

• 记录下axios封装使用Springboot使用Mybatis-plus分页获取到数据
  

{
	"data": {
		"data": {
			"current": "1",
			"hitCount": false,
			"optimizeCountSql": true,
			"orders": [],
			"pages": "4",
			"records": [{
				"birth": "2009-06-11",
				"id": 1,
				"password": "g9saZ4BJ9Xn",
				"sex": "M",
				"username": "ant222"
			}, {
				"birth": "2005-06-23",
				"id": 2,
				"password": "QxTltEzxz",
				"sex": "F",
				"username": "kboor1"
			}, {
				"birth": "2006-05-16",
				"id": 3,
				"password": "5e7TH6lplp",
				"sex": "F",
				"username": "llongfield2"
			}],
			"searchCount": true,
			"size": "3",
			"total": "10"
		},
		"msg": "SUCCESS",
		"status": 200
	},
	"status": 200,
	"statusText": "",
	"headers": {
		"content-length": "568",
		"content-type": "application/json"
	},
	"config": {
		"url": "users",
		"method": "get",
		"params": {
			"query": "",
			"page": 1,
			"limit": 2
		},
		"headers": {
			"Accept": "application/json, text/plain, */*",
			"Authorization": null
		},
		"baseURL": "http://127.0.0.1:8088",
		"transformRequest": [null],
		"transformResponse": [null],
		"timeout": 0,
		"xsrfCookieName": "XSRF-TOKEN",
		"xsrfHeaderName": "X-XSRF-TOKEN",
		"maxContentLength": -1
	},
	"request": {}
}

问题

• Missing space before function parentheses

  • 这个是ESLint规则 函数与括号之间需要有空格
  • 在·eslintrc.js文件的规则rules加上 'space-before-function-paren': ["error", "never"]
  • 重新启动 npm run serve
  • 或者在vscode中安装使用 ESLint 自动修复问题

• 想从浏览器复制对象的数据一般需要转成字符串console.log(JSON.stringify(data))