基于Vue+ELement搭建動態(tài)樹與數(shù)據(jù)表格實現(xiàn)分頁模糊查詢實戰(zhàn)全過程

更新時間：2023年10月10日 10:18:18 作者：Java方文山

這篇文章主要給大家介紹了關(guān)于如何基于Vue+ELement搭建動態(tài)樹與數(shù)據(jù)表格實現(xiàn)分頁模糊查詢的相關(guān)資料,Vue Element UI提供了el-pagination組件來實現(xiàn)表格數(shù)據(jù)的分頁功能,需要的朋友可以參考下

一、前言

在上一篇博文我們搭建了首頁導(dǎo)航和左側(cè)菜單，但是我們的左側(cè)菜單是死數(shù)據(jù)今天我們就來把死的變成活的，并且完成右側(cè)內(nèi)容的書籍?dāng)?shù)據(jù)表格的展示與分頁效果，話不多說上代碼??！

二、左側(cè)動態(tài)樹實現(xiàn)

2.1.后臺數(shù)據(jù)接口定義

首先我們將后端的代碼寫好Controller層代碼

package com.zking.ssm.controller;
import com.zking.ssm.model.Module;
import com.zking.ssm.model.RoleModule;
import com.zking.ssm.model.TreeNode;
import com.zking.ssm.service.IModuleService;
import com.zking.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<>("初始化首頁菜單錯誤",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組件錯誤",false,0,null);
        }
    }
    @RequestMapping("/addRoleModule")
    @ResponseBody
    public JsonResponseBody<?> addRoleModule(RoleModule roleModule){
        try {
            moduleService.addRoleModule(roleModule);
            return new JsonResponseBody<>("新增角色權(quán)限成功",true,0,null);
        } catch (Exception e) {
            e.printStackTrace();
            return new JsonResponseBody<>("新增角色權(quán)限失敗",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<>("獲取角色權(quán)限失敗",false,0,null);
        }
    }
}

由此我們可知后端查詢的樹形菜單的接口為：http://localhost:8080/ssm/module/queryRootNode

2.2.前端導(dǎo)航菜單綁定

數(shù)據(jù)有了我們只用考慮怎么通過Vue拿到數(shù)據(jù)以及展示數(shù)據(jù)就可以了。

找到src下面的api目錄下的action.js文件添加下列接口

  'SYSTEM_USER_MODULE': '/module/queryRootNode', //左側(cè)菜單

在LeftNav.vue中的鉤子函數(shù)內(nèi)編寫方法去到后端拿取數(shù)據(jù)賦予變量

created() {
      this.$root.Bus.$on('aaa', r => {
        this.collapsed = r;
      });
      //加載頁面先去后端拿數(shù)據(jù)
      let url = this.axios.urls.SYSTEM_USER_MODULE;
      this.axios.get(url, {}).then(r => {
        this.menus=r.data.rows
      }).catch(e => {
      })
    }

并在data中定義變量 menus:[]

 menus:[]

2.3.根據(jù)數(shù)據(jù)渲染頁面

去到我們ELement查找相應(yīng)的代碼進行cv，下面是我找好的你們直接用，我們現(xiàn)在只需要將后端獲取到的數(shù)據(jù)在上面的代碼中進行遍歷即可。

        <!-- 左側(cè)菜單內(nèi)容-->
      <el-submenu v-for="m in menus" :index="'ind_'+m.id" :key="'key_'+m.id">
        <template slot="title">
          <i :class="m.icon"></i>
          <span>{{m.text}}</span>
        </template>
        <el-menu-item  v-for="ms in m.modules" :index="ms.url" :key="'key_'+ms.id">
          <i :class="ms.icon"></i>
          <span>{{ms.text}}</span>
        </el-menu-item>
      </el-submenu>

效果展示：

2.4.動態(tài)路由實現(xiàn)

我們點擊下方的子菜單肯定會顯示右側(cè)白框里面的內(nèi)容，所以我們需要實現(xiàn)動態(tài)路由

①實現(xiàn)路由跳轉(zhuǎn)及當(dāng)前項的設(shè)置

<el-menu router :default-active="$route.path">
	<el-menu-item index="/company/userManager">用戶管理</el-menu-item>
</el-menu>

注意事項：

①要實現(xiàn)路由跳轉(zhuǎn)，先要在 el-menu 標(biāo)簽上添加router屬性，然后只要在每個 el-menu-item 標(biāo)簽內(nèi)的index屬性設(shè)置一下url即可實現(xiàn)點擊 el-menu-item 實現(xiàn)路由跳轉(zhuǎn)。

②導(dǎo)航當(dāng)前項，在 el-menu 標(biāo)簽中綁定 :default-active="$route.path"，注意是綁定屬性，不要忘了加“:”，當(dāng)$route.path等于 el-menu-item 標(biāo)簽中的index屬性值時則該item為當(dāng)前項。

③el-submenu標(biāo)簽中的url屬性不能為空，且不能相同，否則會導(dǎo)致多個節(jié)點收縮/折疊效果相同的問題。

②生成相對應(yīng)的Vue文件

根據(jù)我們點擊子菜單所顯示的層級關(guān)系進行Vue組件的編寫，下面以書本管理下面的新增書本為例

AddBook.Vue

<template>
  <h1>新增書本</h1>
</template>
<script>
</script>
<style>
</style>

③配置路由與路由路徑的關(guān)系

index.js

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 Registered from '@/views/Registered'
import AddBook from '@/views/book/AddBook'
import BookList from '@/views/book/BookList'
Vue.use(Router)
export default new Router({
  routes: [{
    path: '/',
    name: 'Login',
    component: Login
  }, {
    path: '/Registered',
    name: 'Registered',
    component: Registered
  }, {
    path: '/AppMain',
    name: 'AppMain',
    component: AppMain,
    children: [{
      path: '/LeftNav',
      name: 'LeftNav',
      component: LeftNav
    }, {
      path: '/TopNav',
      name: 'TopNav',
      component: TopNav
    }, {
      path: '/book/AddBook',
      name: 'AddBook',
      component: AddBook
    }, {
      path: '/book/BookList',
      name: 'BookList',
      component: BookList
    }]
  }]
})

④將組件渲染到頁面上

在AppMain.js中顯示組件就需要加上<router-view></router-view>

<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>
  // 導(dǎo)入組件
  import TopNav from '@/components/TopNav.vue'
  import LeftNav from '@/components/LeftNav.vue'
  // 導(dǎo)出模塊
  export default {
    components: {
      TopNav,LeftNav
    },data() {
      return {
        asideClass: "main-aside"
      }
    },
    created(){
      this.$root.Bus.$on('aaa',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，通過對某一樣式聲明! important ，可以更改默認(rèn)的CSS樣式優(yōu)先級規(guī)則，使該條樣式屬性聲明具有最高優(yōu)先級 */
    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>

效果演示：

三、右側(cè)內(nèi)容數(shù)據(jù)表格

3.1.根據(jù)文檔搭建頁面

首先我們分析一下，我們右側(cè)有那些內(nèi)容？然后去到我們ELementUI官網(wǎng)查找相對應(yīng)的案例代碼，我們首先需要一個form表單提供我們輸入書籍名稱進行模糊查詢，還需要數(shù)據(jù)表格展示數(shù)據(jù)，其次就是底部的分頁條來完成分頁效果，知道了需求我們直接去找案例代碼即可。

AddBook.js

<template>
  <div>
    <!--搜索欄-->
    <el-form :inline="true" class="form-search" style="padding: 30px;">
      <el-form-item label="書本名稱">
        <el-input v-model="bookname" placeholder="請輸入書本名稱"></el-input>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" @click="query(1)">查詢</el-button>
      </el-form-item>
    </el-form>
    <!-- 數(shù)據(jù)表格-->
    <el-table :data="tableData" style="width: 100%" :row-class-name="tableRowClassName">
      <el-table-column prop="id" label="編號" width="180">
      </el-table-column>
      <el-table-column prop="bookname" label="書籍名稱" width="180">
      </el-table-column>
      <el-table-column prop="price" label="書籍價格" width="180">
      </el-table-column>
      <el-table-column prop="booktype" label="書籍類別" width="180">
      </el-table-column>
    </el-table>
    <!-- 分頁欄-->
    <div class="block">
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="currentPage4"
        :page-sizes="[100, 200, 300, 400]" :page-size="100" layout="total, sizes, prev, pager, next, jumper"
        :total="400">
      </el-pagination>
    </div>
  </div>
</template>
<script>
  export default {
    data() {
      return {
        bookname: "",
        tableData: []
      }
    },
    methods: {
    }
  }
</script>
<style>
  .el-table .warning-row {
    background: oldlace;
  }
  .el-table .success-row {
    background: #f0f9eb;
  }
</style>

這樣我們的基本內(nèi)容就搭建完成了

3.2.實現(xiàn)模糊查詢

和前面一樣我們先去后端將接口定義好

package com.zking.ssm.controller;
import com.zking.ssm.model.Book;
import com.zking.ssm.service.IBookService;
import com.zking.ssm.util.JsonResponseBody;
import com.zking.ssm.util.PageBean;
import com.zking.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<>("新增書本成功",true,0,null);
        } catch (Exception e) {
            e.printStackTrace();
            return new JsonResponseBody<>("新增書本失敗",false,0,null);
        }
    }
    @RequestMapping("/editBook")
    @ResponseBody
    public JsonResponseBody<?> editBook(Book book){
        try {
            bookService.updateByPrimaryKey(book);
            return new JsonResponseBody<>("編輯書本成功",true,0,null);
        } catch (Exception e) {
            e.printStackTrace();
            return new JsonResponseBody<>("編輯書本失敗",false,0,null);
        }
    }
    @RequestMapping("/delBook")
    @ResponseBody
    public JsonResponseBody<?> delBook(Book book){
        try {
            bookService.deleteByPrimaryKey(book.getId());
            return new JsonResponseBody<>("刪除書本成功",true,0,null);
        } catch (Exception e) {
            e.printStackTrace();
            return new JsonResponseBody<>("刪除書本失敗",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<>("分頁查詢書本失敗",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<>("查詢統(tǒng)計分析數(shù)據(jù)失敗",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<>("上傳成功",true,0,null);
        } catch (Exception e) {
            e.printStackTrace();
            return new JsonResponseBody<>("上傳失敗",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));
            // 設(shè)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);
        }
    }
}

由此我們可知后端查詢書籍的接口為：http://localhost:8080/ssm/book/queryBookPager

action.js文件添加下列接口

'BOOK_LIST': '/book/queryBookPager', //書籍查詢

在AddBook.vue中的鉤子函數(shù)內(nèi)編寫方法去到后端拿取數(shù)據(jù)賦予變量

 created() {
      //加載頁面先去后端拿數(shù)據(jù)
      let params={
        bookname:this.bookname
      }
      let url = this.axios.urls.BOOK_LIST;
      this.axios.get(url, {params:params}).then(r => {
        console.log(r)
        this.tableData = r.data.rows
      }).catch(e => {
      })
    }

由于不止我們初始頁面需要用到這個方法模糊查詢也要所以我們將該代碼進行封裝讓它有復(fù)用性

    methods: {
      //封裝查詢方法
      list(params) {
        let url = this.axios.urls.BOOK_LIST;
        this.axios.get(url, {
          params: params
        }).then(r => {
          console.log(r)
          this.tableData = r.data.rows
        }).catch(e => {
        })
      },
      //模糊查詢方法
      query() {
        let params = {
          bookname: this.bookname
        }
        this.list(params)
      }
    },
    created() {
      //加載頁面先去后端拿數(shù)據(jù)
      let params = {
        bookname: this.bookname
      }
      this.list()
    }

效果展示：

四、分頁實現(xiàn)

更改我們的分頁欄代碼并定義變量，編寫分頁欄中自帶的兩個方法，一個是頁碼發(fā)生變化會觸發(fā)一個是頁數(shù)發(fā)生改變會觸發(fā)。

<!-- 分頁欄-->
    <div class="block">
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="page"
        :page-sizes="[10, 20, 30, 40]" :page-size="rows" layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </div>

<script>
  export default {
    data() {
      return {
        bookname: "",
        tableData: [],
        rows: 10,
        page: 1,
        total: 0,
      }
    },
    methods: {
      //封裝查詢方法
      list(params) {
        let url = this.axios.urls.BOOK_LIST;
        this.axios.get(url, {
          params: params
        }).then(r => {
          console.log(r)
          this.tableData = r.data.rows
          this.total = r.data.total
        }).catch(e => {
        })
      },
      //模糊查詢方法
      query() {
        let params = {
          bookname: this.bookname
        }
        this.list(params)
      },
      //當(dāng)頁發(fā)生變化會觸發(fā)
      handleSizeChange(r) {
        let params = {
          bookname: this.bookname,
          rows: this.rows,
          rows: r
        }
        this.list(params)
      },
      //當(dāng)前頁數(shù)發(fā)生變化會觸發(fā)
      handleCurrentChange(p) {
        let params = {
          bookname: this.bookname,
          rows: this.rows,
          page: p
        }
        this.list(params)
      }
    },
    created() {
      //加載頁面先去后端拿數(shù)據(jù)
      let params = {
        bookname: this.bookname
      }
      this.list()
    }
  }
</script>

效果展示：

總結(jié)

到此這篇關(guān)于基于Vue+ELement搭建動態(tài)樹與數(shù)據(jù)表格實現(xiàn)分頁模糊查詢的文章就介紹到這了,更多相關(guān)Vue+ELement分頁模糊查詢內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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