elementui树形表格全部折叠 elementui 树形表格

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hackernew 2024-06-01 17:35:30

文章标签 elementui树形表格全部折叠 elementui 前端 html List 文章分类 机器学习人工智能

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前言：

是一套基于Vue.js的桌面端组件库，由饿了么前端团队开发维护。它提供了丰富的UI组件和交互效果，可以帮助开发者快速构建出美观、易用的Web应用程序。ElementUI的背景可以追溯到2016年，当时饿了么团队正在开发一款新的后台管理系统，他们发现市面上缺乏一款符合他们需求的组件库，于是决定自己开发一套。经过两年的不断迭代和完善，ElementUI已经成为了Vue.js生态圈中非常受欢迎的组件库之一。

1.动态树

1.2数据表

数据表的创建及数据添加

表结构

表数据

1.3后端

在自动生成的名为 : ModuleMapper.xml 配置文件中编写动态SQL

<!--先根据id查询菜单根级目录，再利用上次查询结果collection中column的值id作为递归查询条件，查出所有子菜单，返回结果必须为resultMap，并且值为上面构建的resultMap的id值-->
  <select id="queryChildNodeByPid" resultMap="BaseResultMap" parameterType="int">
    select <include refid="Base_Column_List"/> from t_module_vue
    where pid=#{value}
  </select>

在自动生成的接口 ModuleMapper 编写查询的方法

List<Module> queryChildNodeByPid(Integer id);

并且在自己为菜单创建的接口里进行编写方法之后，再到实现类里面进行重新。

在控制器中编写访问方法的地址名为:ModuleController

package com.sy.ssm.controller;

import com.sy.ssm.model.Module;
import com.sy.ssm.model.RoleModule;
import com.sy.ssm.model.TreeNode;
import com.sy.ssm.service.IModuleService;
import com.sy.ssm.util.JsonResponseBody;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.List;

@Controller
@RequestMapping("/module")
public class ModuleController {

    @Autowired
    private IModuleService moduleService;

    @RequestMapping("/queryRootNode")
    @ResponseBody
    public JsonResponseBody<List<Module>> queryRootNode(){
        try {
            List<Module> modules = moduleService.queryRootNode(-1);
            return new JsonResponseBody<>("OK",true,0,modules);
        } catch (Exception e) {
            e.printStackTrace();
            return new JsonResponseBody<>("初始化首页菜单错误",false,0,null);
        }
    }

    @RequestMapping("/queryElementTree")
    @ResponseBody
    public JsonResponseBody<List<TreeNode>> queryElementTree(){
        try {
            List<TreeNode> modules = moduleService.queryTreeNode(-1);
            return new JsonResponseBody<>("OK",true,0,modules);
        } catch (Exception e) {
            e.printStackTrace();
            return new JsonResponseBody<>("初始化ElementUI的Tree组件错误",false,0,null);
        }
    }

    @RequestMapping("/addRoleModule")
    @ResponseBody
    public JsonResponseBody<?> addRoleModule(RoleModule roleModule){
        try {
            moduleService.addRoleModule(roleModule);
            return new JsonResponseBody<>("新增角色权限成功",true,0,null);
        } catch (Exception e) {
            e.printStackTrace();
            return new JsonResponseBody<>("新增角色权限失败",false,0,null);
        }
    }

    @RequestMapping("/queryModuleByRoleId")
    @ResponseBody
    public JsonResponseBody<List<String>> queryModuleByRoleId(RoleModule roleModule){
        try {
            List<String> modules = moduleService.queryModuleByRoleId(roleModule);
            return new JsonResponseBody<>("OK",true,0,modules);
        } catch (Exception e) {
            e.printStackTrace();
            return new JsonResponseBody<>("获取角色权限失败",false,0,null);
        }
    }
}

1.4前端

在src/api目录下增加action.js的地址配置：

/**
 * 对后台请求的地址的封装，URL格式如下：
 * 模块名_实体名_操作
 */
export default {
  'SERVER': 'http://localhost:8080/ssm', //服务器地址
  'SYSTEM_USER_DOLOGIN': '/user/userLogin', //登陆请求
  'SYSTEM_USER_DOREG': '/user/userRegister', //注册请求
  'SYSTEM_MENU': '/module/queryRootNode', //左侧菜单导航数据请求
  'SYSTEM_BookList': '/book/queryBookPager', //书籍的后端数据请求
  'getFullPath': k => { //获得请求的完整地址，用于mockjs测试时使用
    return this.SERVER + this[k];
  }
}

AppMain.vue的组件代码中修改<template>标签中的代码

<template>
  <el-container class="main-container">
    <el-aside v-bind:class="asideClass">
      <LeftNav></LeftNav>
    </el-aside>
    <el-container>
      <el-header class="main-header">
        <TopNav></TopNav>
      </el-header>
      <el-main class="main-center">
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
  // 导入组件
  import TopNav from '@/components/TopNav.vue'
  import LeftNav from '@/components/LeftNav.vue'

  // 导出模块
  export default {
    components: {
      TopNav,
      LeftNav
    },
    data() {
      return {
        asideClass: "main-aside"
      }
    },
    created() {
      this.$root.Bus.$on('shrink', r => {
        this.asideClass = r ? 'main-aside-collapsed' : 'main-aside';
      });
    }
  };
</script>
<style scoped>
  .main-container {
    height: 100%;
    width: 100%;
    box-sizing: border-box;
  }

  .main-aside-collapsed {
    /* 在CSS中，通过对某一样式声明! important ，可以更改默认的CSS样式优先级规则，使该条样式属性声明具有最高优先级 */
    width: 64px !important;
    height: 100%;
    background-color: #334157;
    margin: 0px;
  }

  .main-aside {
    width: 240px !important;
    height: 100%;
    background-color: #334157;
    margin: 0px;
  }

  .main-header,
  .main-center {
    padding: 0px;
    border-left: 2px solid #333;
  }
</style>

LeftNav.vue编写组件中的代码

<template>
  <el-menu router :default-active="$route.path" default-active="2" class="el-menu-vertical-demo" background-color="#334157" text-color="#fff"
    active-text-color="#ffd04b" :collapse="collapsed">
    <!-- <el-menu default-active="2" :collapse="collapsed" collapse-transition router :default-active="$route.path" unique-opened class="el-menu-vertical-demo" background-color="#334157" text-color="#fff" active-text-color="#ffd04b"> -->
    <div class="logobox">
      <img class="logoimg" src="../assets/img/logo.png" alt="">
    </div>
    <el-submenu v-for="m in menus" :index="'idx'+m.id" :key="'key'+m.id">
      <template slot="title">
        <i :class="m.icon"></i>
        <span>{{m.text}}</span>
      </template>
      <el-menu-item  v-for="n in m.modules" :index="n.url" :key="'key'+n.id">
             <i :class="n.icon"></i>
             <span>{{n.text}}</span>
            </el-menu-item>
    </el-submenu>
  </el-menu>
</template>
<script>
  export default {
    data() {
      return {
        collapsed: false,
        menus:[]
      }
    },
    created() {
      this.$root.Bus.$on('shrink', t => {
        this.collapsed = t;
      });
      //获取后台请求数据的地址
      let url = this.axios.urls.SYSTEM_MENU;
      this.axios.get(url, {}).then(d => {
        console.log(d)
          this.menus=d.data.rows;
      }).catch(e => {});
    }

  }
</script>
<style>
  .el-menu-vertical-demo:not(.el-menu--collapse) {
    width: 240px;
    min-height: 400px;
  }

  .el-menu-vertical-demo:not(.el-menu--collapse) {
    border: none;
    text-align: left;
  }

  .el-menu-item-group__title {
    padding: 0px;
  }

  .el-menu-bg {
    background-color: #1f2d3d !important;
  }

  .el-menu {
    border: none;
  }

  .logobox {
    height: 40px;
    line-height: 40px;
    color: #9d9d9d;
    font-size: 20px;
    text-align: center;
    padding: 20px 0px;
  }

  .logoimg {
    height: 40px;
  }
</style>

在src/views目录中创建book文件的创建以下两个组件：

AddBook.vue

<template>
  <h1>书籍的新增</h1>
</template>
 
<script>
</script>
 
<style>
</style>

BookList.vue

<template>
  <h1>书籍的数据</h1>
</template>
 
<script>
</script>
 
<style>
</style>

在src/router目录中的index.js下配置路径：

import Vue from 'vue'
import Router from 'vue-router'
import HelloWorld from '@/components/HelloWorld'
import AppMain from '@/components/AppMain'
import LeftNav from '@/components/LeftNav'
import TopNav from '@/components/TopNav'

import Login from '@/views/Login'
import Register from '@/views/Register'


Vue.use(Router)

export default new Router({
  routes: [{
    path: '/',
    name: 'Login',
    component: Login
  }, {
    path: '/Register',
    name: 'Register',
    component: Register
  }, {
    path: '/AppMain',
    name: 'AppMain',
    component: AppMain,
    children: [{
      path: '/LeftNav',
      name: 'LeftNav',
      component: LeftNav
    }, {
      path: '/TopNav',
      name: 'TopNav',
      component: TopNav
    }]
  }]
})

然后开启前端和后端项目的服务进行访问

效果展示 :

elementui树形表格全部折叠 elementui 树形表格_elementui树形表格全部折叠

2.书籍管理

2.1数据表

表结构

elementui树形表格全部折叠 elementui 树形表格_List_02

2.2后端

BookController

package com.sy.ssm.controller;

import com.sy.ssm.model.Book;
import com.sy.ssm.service.IBookService;
import com.sy.ssm.util.JsonResponseBody;
import com.sy.ssm.util.PageBean;
import com.sy.ssm.vo.BookFileVo;
import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;

@Controller
@RequestMapping("/book")
public class BookController {

    @Autowired
    private IBookService bookService;

    @RequestMapping("/addBook")
    @ResponseBody
    public JsonResponseBody<?> addBook(Book book){
        try {
            bookService.insert(book);
            return new JsonResponseBody<>("新增书本成功",true,0,null);
        } catch (Exception e) {
            e.printStackTrace();
            return new JsonResponseBody<>("新增书本失败",false,0,null);
        }
    }

    @RequestMapping("/editBook")
    @ResponseBody
    public JsonResponseBody<?> editBook(Book book){
        try {
            bookService.updateByPrimaryKey(book);
            return new JsonResponseBody<>("编辑书本成功",true,0,null);
        } catch (Exception e) {
            e.printStackTrace();
            return new JsonResponseBody<>("编辑书本失败",false,0,null);
        }
    }

    @RequestMapping("/delBook")
    @ResponseBody
    public JsonResponseBody<?> delBook(Book book){
        try {
            bookService.deleteByPrimaryKey(book.getId());
            return new JsonResponseBody<>("删除书本成功",true,0,null);
        } catch (Exception e) {
            e.printStackTrace();
            return new JsonResponseBody<>("删除书本失败",false,0,null);
        }
    }

    @RequestMapping("/queryBookPager")
    @ResponseBody
    public JsonResponseBody<List<Book>> queryBookPager(Book book, HttpServletRequest req){
        try {
            PageBean pageBean=new PageBean();
            pageBean.setRequest(req);
            List<Book> books = bookService.queryBookPager(book, pageBean);
            return new JsonResponseBody<>("OK",true,pageBean.getTotal(),books);
        } catch (Exception e) {
            e.printStackTrace();
            return new JsonResponseBody<>("分页查询书本失败",false,0,null);
        }
    }

    @RequestMapping("/queryBookCharts")
    @ResponseBody
    public JsonResponseBody<?> queryBookCharts(){
        try{
            Map<String, Object> charts = bookService.queryBookCharts();
            return new JsonResponseBody<>("OK",true,0,charts);
        }catch (Exception e){
            e.printStackTrace();
            return new JsonResponseBody<>("查询统计分析数据失败",false,0,null);
        }
    }

    @RequestMapping("/upload")
    @ResponseBody
    public JsonResponseBody<?> upload(BookFileVo bookFileVo){
        try {
            MultipartFile bookFile = bookFileVo.getBookFile();
            System.out.println(bookFileVo);
            System.out.println(bookFile.getContentType());
            System.out.println(bookFile.getOriginalFilename());
            return new JsonResponseBody<>("上传成功",true,0,null);
        } catch (Exception e) {
            e.printStackTrace();
            return new JsonResponseBody<>("上传失败",false,0,null);
        }
    }

    @RequestMapping("/download")
    public void download(HttpServletRequest request, HttpServletResponse response){
        try {
            String relativePath = "uploads/1.jpg";
            String absolutePath = request.getRealPath(relativePath);
            InputStream is = new FileInputStream(new File(absolutePath));
            OutputStream out = response.getOutputStream();
            response.setContentType("application/octet-stream");
            response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode("1.jpg", "UTF-8"));
            byte[] by = new byte[1024];
            int len = -1;
            while (-1 != (len = is.read(by))) {
                out.write(by);
            }
            is.close();
            out.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @RequestMapping("/downloadUrl")
    public void downloadUrl(HttpServletRequest request, HttpServletResponse response){
        String relativePath = "uploads/1.jpg";
        String absolutePath = request.getRealPath(relativePath);
        InputStream is = null;
        OutputStream out = null;

        try {
            is = new FileInputStream(new File(absolutePath));
            // 设置Content-Disposition
            response.setHeader("Content-Disposition",
                    "attachment;filename=" + URLEncoder.encode("1.jpg", "UTF-8"));
            out = response.getOutputStream();
            IOUtils.copy(is, out);
            response.flushBuffer();
            System.out.println("完成");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            IOUtils.closeQuietly(is);
            IOUtils.closeQuietly(out);
        }
    }
}

2.3前端

在BookList.vue 的组件中编写

<template>
  <div class="Book" style="padding: 30px;">
    <!-- 输入框搜索 -->
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item label="书籍名称 : ">
        <el-input v-model="bookname" placeholder="书籍名称"></el-input>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" plain @click="onSubmit">查询</el-button>
      </el-form-item>
    </el-form>
    <!-- 书籍的书籍表格 -->
    <el-table :data="tableData" style="width: 100%">
      <el-table-column prop="id" label="书籍ID"></el-table-column>
      <el-table-column prop="bookname" label="书籍名称"></el-table-column>
      <el-table-column prop="price" label="书籍价格"></el-table-column>
      <el-table-column prop="booktype" label="书籍类型"></el-table-column>
    </el-table>
    <!-- 分页 -->
    <div class="block" style="padding: 20px;">
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="page"
        background :page-sizes="[10, 20, 30, 40]" :page-size="rows" layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </div>
  </div>
 
</template>
 
<script>
  export default {
    data() {
      return {
        bookname: '',
        tableData: [],
        rows: 10,
        total: 0,
        page: 1
      }
    },
    methods: {
      handleSizeChange(r) {
        //当页大小发生变化
        let params = {
          bookname: this.bookname,
          rows: r,
          page: this.page
        }
        // console.log(params)
        this.query(params);
      },
      handleCurrentChange(p) {
        //当前页码大小发生变化
        let params = {
          bookname: this.bookname,
          rows: this.rows,
          page: p
        }
        // console.log(params)
        this.query(params);
      },
      query(params) {
        //获取后台请求书籍数据的地址
        let url = this.axios.urls.SYSTEM_BookList;
        this.axios.get(url, {
          params: params
        }).then(d => {
          console.log(url)
          this.tableData = d.data.rows;
          this.total = d.data.total;
        }).catch(e => {});
      },
      onSubmit() {
        let params = {
          bookname: this.bookname
        }
        console.log(params)
        this.query(params);
        this.bookname = ''
      }
    },
    created() {
      this.query({})
    }
  }
</script>
 
<style>
</style>

开启前端和后端项目的服务进行访问

效果展示：

elementui树形表格全部折叠 elementui 树形表格_elementui_03