- 管理界面树形菜单的步骤思路
- 管理界面的树形菜单
管理界面树形菜单的步骤思路
1.学习layui的菜单模块
1.1.分析前端需要什么样的数据？
1.2.现在能够拿到什么样的数据？
1.3.如何将现有的转换成需要的数据格式？
2.将对应的菜单数据构建出来
3.完成功能
管理界面的树形菜单
package com.zking.dao; import java.util.ArrayList; import java.util.List; import com.zking.entity.Permission; import com.zking.util.BaseDao; import com.zking.util.BuildTree; import com.zking.util.PageBean; import com.zking.util.TreeVo; public class PermissionDao extends BaseDao<Permission>{ public List<Permission> list(Permission permission, PageBean pageBean) throws Exception { String sql="select * from t_oa_permission"; return super.executeQuery(sql, Permission.class, pageBean); } //将数据库查询出的平级数据，转换成有父子关系的数据 public List<TreeVo<Permission>> menus(Permission permission, PageBean pageBean) throws Exception{ List<TreeVo<Permission>> lst=new ArrayList<>(); List<Permission> list = this.list(permission, pageBean); for (Permission p : list) { TreeVo<Permission> vo=new TreeVo<>(); vo.setId(p.getId()+""); vo.setText(p.getName()); vo.setParentId(p.getPid()+""); lst.add(vo); } return BuildTree.buildList(lst, "-1"); } }
package com.zking.dao; import java.util.List; import org.junit.Test; import com.fasterxml.jackson.databind.ObjectMapper; import com.zking.entity.Permission; import com.zking.util.TreeVo; public class PermissionDaoTest { private PermissionDao pd=new PermissionDao(); @Test public void testList() throws Exception { List<Permission> list = pd.list(null, null); ObjectMapper om =new ObjectMapper(); System.out.println(om.writeValueAsString(list)); } @Test public void menus() throws Exception { List<TreeVo<Permission>> menus = pd.menus(null, null); ObjectMapper om =new ObjectMapper(); System.out.println(om.writeValueAsString(menus)); } }
package com.zking.entity; public class Permission { private long id; private String name; private String description; private String url; private long pid; private int ismenu;//控制当前系统的权限是菜单还是按钮 private long displayno;//菜单排序字段 public long getId() { return id; } public void setId(long id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } public String getUrl() { return url; } public void setUrl(String url) { this.url = url; } public long getPid() { return pid; } public void setPid(long pid) { this.pid = pid; } public int getIsmenu() { return ismenu; } public void setIsmenu(int ismenu) { this.ismenu = ismenu; } public long getDisplayno() { return displayno; } public void setDisplayno(long displayno) { this.displayno = displayno; } @Override public String toString() { return "Permission [id=" + id + ", name=" + name + ", description=" + description + ", url=" + url + ", pid=" + pid + ", ismenu=" + ismenu + ", displayno=" + displayno + "]"; } public Permission(long id, String name, String description, String url, long pid, int ismenu, long displayno) { super(); this.id = id; this.name = name; this.description = description; this.url = url; this.pid = pid; this.ismenu = ismenu; this.displayno = displayno; } public Permission() { super(); // TODO Auto-generated constructor stub } }
package com.zking.web; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.zking.dao.PermissionDao; import com.zking.entity.Permission; import com.zking.framework.ActionSupport; import com.zking.framework.ModelDriver; import com.zking.util.ResponseUtil; import com.zking.util.TreeVo; public class PermissionAction extends ActionSupport implements ModelDriver<Permission> { private Permission permission=new Permission(); private PermissionDao permissionDao=new PermissionDao(); public void menus(HttpServletRequest req, HttpServletResponse resp) { try { List<TreeVo<Permission>> menus = permissionDao.menus(null, null); ResponseUtil.writeJson(resp, menus); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } @Override public Permission getModel() { return permission; } }
<?xml version="1.0" encoding="UTF-8"?> <config> <!-- <action path="/blog" type="com.zking.web.BlogAction"> <forward name="list" path="/blogList.jsp" redirect="false" /> <forward name="toList" path="/blog.action?methodName=list" redirect="true" /> <forward name="toEdit" path="/blogEdit.jsp" redirect="false" /> </action> --> <action path="/user" type="com.zking.web.UserAction"> </action> <action path="/permission" type="com.zking.web.PermissionAction"> </action> <!-- <action path="/meetingInfo" type="com.zking.web.MeetingInfoAction"> --> <!-- <forward name="list" path="/meetingInfoList.jsp" redirect="false" /> --> <!-- <forward name="toList" path="/meetingInfo.action?methodName=list" --> <!-- redirect="true" /> --> <!-- <forward name="toEdit" path="/meetingInfoEdit.jsp" redirect="false" /> --> <!-- </action> --> <!-- <action path="/solrBlog" type="com.test.web.SolrBlogAction"> --> <!-- <forward name="list" path="/solrBlogList.jsp" redirect="false" /> --> <!-- <forward name="toList" path="/solrBlog.action?methodName=list" --> <!-- redirect="true" /> --> <!-- <forward name="toEdit" path="/solrBlogEdit.jsp" redirect="false" /> --> <!-- </action> --> <action path="/studentBlog" type="com.test.web.StudentBlogAction"> <forward name="list" path="/studentBlogList.jsp" redirect="false" /> <forward name="toList" path="/studentBlog.action?methodName=list" redirect="true" /> <forward name="toEdit" path="/studentBlogEdit.jsp" redirect="false" /> </action> <action path="/solrBlog" type="com.xiaoli.web.SolrBlogAction"> <forward name="list" path="/solrBlogList.jsp" redirect="false" /> <forward name="toList" path="/solrBlog.action?methodName=list" redirect="true" /> <forward name="toEdit" path="/solrBlogEdit.jsp" redirect="false" /> </action> </config>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <!-- 引入 layui.css --> <link rel="stylesheet" href="${pageContext.request.contextPath }/static/js/layui/css/layui.css"> <!-- 引入 layui.js --> <script src="${pageContext.request.contextPath }/static/js/layui/layui.js"></script> <script src="${pageContext.request.contextPath }/static/js/layui/layui.all.js"></script> </head> <body> </body> </html>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@include file="common/header.jsp" %> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>后台主页</title> </head> <body> <div class="layui-layout layui-layout-admin"> <div class="layui-header"> <div class="layui-logo layui-hide-xs layui-bg-black">layout demo</div> <!-- 头部区域（可配合layui 已有的水平导航） --> <ul class="layui-nav layui-layout-left"> <!-- 移动端显示 --> <li class="layui-nav-item layui-show-xs-inline-block layui-hide-sm" lay-header-event="menuLeft"> <i class="layui-icon layui-icon-spread-left"></i> </li> <!-- Top导航栏 --> <li class="layui-nav-item layui-hide-xs"><a href="">nav 1</a></li> <li class="layui-nav-item layui-hide-xs"><a href="">nav 2</a></li> <li class="layui-nav-item layui-hide-xs"><a href="">nav 3</a></li> <li class="layui-nav-item"> <a href="javascript:;">nav groups</a> <dl class="layui-nav-child"> <dd><a href="">menu 11</a></dd> <dd><a href="">menu 22</a></dd> <dd><a href="">menu 33</a></dd> </dl> </li> </ul> <!-- 个人头像及账号操作 --> <ul class="layui-nav layui-layout-right"> <li class="layui-nav-item layui-hide layui-show-md-inline-block"> <a href="javascript:;"> <img src="//tva1.sinaimg.cn/crop.0.0.118.118.180/5db11ff4gw1e77d3nqrv8j203b03cweg.jpg" class="layui-nav-img"> tester </a> <dl class="layui-nav-child"> <dd><a href="">Your Profile</a></dd> <dd><a href="">Settings</a></dd> <dd><a href="login.jsp">Sign out</a></dd> </dl> </li> <li class="layui-nav-item" lay-header-event="menuRight" lay-unselect> <a href="javascript:;"> <i class="layui-icon layui-icon-more-vertical"></i> </a> </li> </ul> </div> <div class="layui-side layui-bg-black"> <div class="layui-side-scroll"> <!-- 左侧导航区域（可配合layui已有的垂直导航） --> <ul id="menu" class="layui-nav layui-nav-tree" lay-filter="menu"> <li class="layui-nav-item layui-nav-itemed"> <a class="" href="javascript:;">menu group 1</a> <dl class="layui-nav-child"> <dd><a href="javascript:;">menu 1</a></dd> <dd><a href="javascript:;">menu 2</a></dd> <dd><a href="javascript:;">menu 3</a></dd> <dd><a href="">the links</a></dd> </dl> </li> <li class="layui-nav-item"> <a href="javascript:;">menu group 2</a> <dl class="layui-nav-child"> <dd><a href="javascript:;">list 1</a></dd> <dd><a href="javascript:;">list 2</a></dd> <dd><a href="">超链接</a></dd> </dl> </li> <li class="layui-nav-item"><a href="javascript:;">click menu item</a></li> <li class="layui-nav-item"><a href="">the links</a></li> </ul> </div> </div> <div class="layui-body"> <!-- 内容主体区域 --> <div style="padding: 15px;">内容主体区域。记得修改 layui.css 和 js 的路径</div> </div> <div class="layui-footer"> <!-- 底部固定区域 --> 底部固定区域 </div> </div> <script> //JS layui.use(['element', 'layer', 'util'], function(){ var element = layui.element ,layer = layui.layer ,util = layui.util ,$ = layui.$; $.ajax({ url:"${pageContext.request.contextPath }/permission.action?methodName=menus", dataType:'json', success:function(data){ console.log(data); var htmlStr=''; $.each(data,function(i,n){ htmlStr+='<li class="layui-nav-item layui-nav-itemed">'; htmlStr+='<a class="" href="javascript:;">'+n.text+'</a>'; if(n.hasChildren){ var children=n.children; htmlStr+='<dl class="layui-nav-child">'; $.each(children,function(idx,node){ htmlStr+='<dd><a href="javascript:;">'+node.text+'</a></dd>'; }) htmlStr+='</dl>'; } htmlStr+='</li>' }); $("#menu").html(htmlStr); element.render('menu'); } }); }); </script> </body> </html>
