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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 :
2.书籍管理
2.1数据表
表结构
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: