easyui--权限管理
Posted ly-0919
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1、权限目的：
是为了让不同的用户可以操作系统中不同资源
直接点说就是不同的用户可以操作不同的菜单
核心：实现菜单权限的核心思想就是控制用户登录后台所传递的menuId（与树形菜单分类列段关联的用户信息列段）
2、二星权限设计（用户权限多对多）
2.1、执行数据库脚本
用户登录信息表t_easyui_user_version2
用户菜单中间表t_easyui_usermenu
菜单管理表请参照上一篇：easyUI--入门实例
2.2建立实体类
1 public class TreeNode 2 private String id; 3 private String text; 4 private List<TreeNode> children=new ArrayList<TreeNode>(); 5 private Map<String, Object> attributes=new HashMap<String, Object>(); 6 7 8 public String getId() 9 return id; 10 11 12 public void setId(String id) 13 this.id = id; 14 15 16 public String getText() 17 return text; 18 19 20 public void setText(String text) 21 this.text = text; 22 23 24 public List<TreeNode> getChildren() 25 return children; 26 27 28 public void setChildren(List<TreeNode> children) 29 this.children = children; 30 31 32 public Map<String, Object> getAttributes() 33 return attributes; 34 35 36 public void setAttributes(Map<String, Object> attributes) 37 this.attributes = attributes; 38 39 40 @Override 41 public String toString() 42 return "TreeNode [id=" + id + ", text=" + text + ", children=" + children + ", attributes=" + attributes + "]"; 43 44 45 46
2.3创建dao UserDao
package com.yuan.dao; import java.sql.SQLException; import java.util.List; import java.util.Map; import com.yuan.util.JsonBaseDao; import com.yuan.util.JsonUtils; import com.yuan.util.PageBean; import com.yuan.util.StringUtils; public class UserDao extends JsonBaseDao /** * 用户登录或者查询用户分页信息的公共方法 * @param paMap * @param pageBean * @return * @throws InstantiationException * @throws IllegalAccessException * @throws SQLException */ public List<Map<String, Object>> list(Map<String, String[]> paMap,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException String sql="SELECT * FROM t_easyui_user_version2 WHERE TRUE "; String uid=JsonUtils.getParamVal(paMap, "uid"); String upwd=JsonUtils.getParamVal(paMap, "upwd"); if(StringUtils.isNotBlank(uid)) sql +=" AND uid="+uid; if(StringUtils.isNotBlank(upwd)) sql +=" AND upwd="+upwd; return super.executeQuery(sql, pageBean); /** * 根据当前用户登录的ID去查询对应的所菜单 * @param paMap * @param pageBean * @return * @throws InstantiationException * @throws IllegalAccessException * @throws SQLException */ public List<Map<String, Object>> getMenuByUid(Map<String, String[]> paMap,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException String sql="SELECT * FROM t_easyui_usermenu WHERE TRUE "; String uid=JsonUtils.getParamVal(paMap, "uid"); if(StringUtils.isNotBlank(uid)) sql +=" AND uid="+uid; return super.executeQuery(sql, pageBean);
2.4修改原有的dao MenuDao
主要修改是将listMap方法修改成listMapAuth，
.listMap方法只负责查询子节点，不包括本身
.listMapAuth方法可以查询子节点包括自身节点
package com.hmc.dao; import java.sql.SQLException; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import com.hmc.entity.TreeNode; import com.hmc.util.JsonBaseDao; import com.hmc.util.JsonUtils; import com.hmc.util.PageBean; import com.hmc.util.StringUtils; public class MenuDao extends JsonBaseDao /** * 给前台tree_data1_json的字符串 * @param paMap 从前台jsp传递过来的参数集合 * @param pageBean * @return * @throws InstantiationException * @throws IllegalAccessException * @throws SQLException */ public List<TreeNode> listTreeNode(Map<String, String[]> paMap,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException List<Map<String, Object>> listMap = this.listMapAuth(paMap, pageBean); List<TreeNode> listTreeNode=new ArrayList<TreeNode>(); this.listMapToListTreeNode(listMap, listTreeNode); return listTreeNode; // public List<Map<String, Object>> listMap(Map<String, String[]> paMap,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException
// String sql="SELECT * FROM t_easyui_menu WHERE TRUE"; // String menuId=JsonUtils.getParamVal(paMap, "Menuid"); // if(StringUtils.isNotBlank(menuId)) // sql+=" AND parentid="+menuId; // // else // sql+=" AND parentid=-1"; // // // //这里面存放的是数据库中的菜单信息 // List<Map<String, Object>> listMap = super.executeQuery(sql, pageBean); // return listMap; // // public List<Map<String, Object>> listMapAuth(Map<String, String[]> paMap,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException String sql="SELECT * FROM t_easyui_menu WHERE TRUE"; String menuId=JsonUtils.getParamVal(paMap, "Menuid"); if(StringUtils.isNotBlank(menuId)) sql+=" AND menuId in ("+menuId+")"; else sql+=" AND menuId=001"; //这里面存放的是数据库中的菜单信息 List<Map<String, Object>> listMap = super.executeQuery(sql, pageBean); return listMap; /** * ‘Menuid‘:001,‘Menuame‘:‘学生管理‘ * id:..,text:... * @param map * @param treeNode * @throws InstantiationException * @throws IllegalAccessException * @throws SQLException */ private void MapToTreeNode(Map<String, Object> map,TreeNode treeNode) throws InstantiationException, IllegalAccessException, SQLException treeNode.setId(map.get("Menuid")+""); treeNode.setText(map.get("Menuname")+""); treeNode.setAttributes(map); // 将子节点添加到父节点当中，建立数据之间的父子关系 // treeNode.setChildren(children); Map<String, String[]> childrenMap=new HashMap<>(); childrenMap.put("Menuid", new String[]treeNode.getId()); List<Map<String, Object>> listMap = this.listMap(childrenMap, null); List<TreeNode>listTreeNode=new ArrayList<>(); this.listMapToListTreeNode(listMap, listTreeNode); treeNode.setChildren(listTreeNode); /** * [‘Menuid‘:001,‘Menuame‘:‘学生管理‘，‘Menuid‘:002,‘Menuame‘:‘后勤管理‘] * @param listMap * tree_data1_json * @param listTreeNode * @throws SQLException * @throws IllegalAccessException * @throws InstantiationException */ private void listMapToListTreeNode (List<Map<String, Object>> listMap,List<TreeNode> listTreeNode) throws InstantiationException, IllegalAccessException, SQLException TreeNode treeNode=null; for (Map<String, Object> map : listMap) treeNode=new TreeNode(); MapToTreeNode(map, treeNode); listTreeNode.add(treeNode);
2.5新增web的方法
package com.yuan.web; import java.sql.SQLException; import java.util.List; import java.util.Map; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.yuan.dao.UserDao; import com.***.framework.ActionSupport; public class UserAction extends ActionSupport private UserDao userDao = new UserDao(); /** * 登录成功后跳转index.jsp * @param request * @param response * @return */ public String login(HttpServletRequest request,HttpServletResponse response) // 系统中是否有当前登录用户 Map<String, Object> map = null; try map = this.userDao.list(request.getParameterMap(), null).get(0); catch (Exception e) request.setAttribute("msg", "用户不存在"); return "login"; try //有就查询用户菜单中间表，获取对应menuid的集合 if(map!=null&&map.size()>0) //得到[Menuid:002,...,Menuid:003,...] //截成002，003 StringBuilder sb= new StringBuilder(); List<Map<String, Object>> menuByUid = this.userDao.getMenuByUid(request.getParameterMap(), null); for (Map<String, Object> m : menuByUid) sb.append(","+m.get("menuId")); request.setAttribute("menuIds", sb.substring(1)); return "index"; else //没有就重新跳回登陆界面，并提示用户不存在 request.setAttribute("msg", "用户不存在"); return "login"; catch (InstantiationException | IllegalAccessException | SQLException e) // TODO Auto-generated catch block e.printStackTrace(); return "login";
2.6新增登入界面，跳入前端树形菜单
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <form action="$pageContext.request.contextPath /userAction.action?methodName=login" method="post"> uid:<input type="text" name="uid"> upwd:<input type="text" name="upwd"> <input type="submit"> <span style="color:red;">$msg </span> </form> </body> </html>
页面比较简单，可自行优化。
2.7修改js代码 index.js
$(function() $(‘#tt‘).tree( url:‘menuAction.action?methodName=menuTree&&Menuid=‘+$("#menuIds").val(), onClick: function(node) // alert(node.text);//在用户点击的时候提示 // add a new tab panel var content = ‘<iframe scrolling="no" frameborder="0" src="‘+node.attributes.menuURL+‘" width="99%" height="99%"></iframe>‘; if($(‘#menuTab‘).tabs(‘exists‘,node.text)) //存在则执行选项卡选中已有选项卡的操作 $(‘#menuTab‘).tabs(‘select‘,node.text); else $(‘#menuTab‘).tabs(‘add‘, //不存在执行新增的操作 title:node.text, content:content, closable:true, ); ); )
在修改url时需要在原有的index.jsp页面添加一行接受web层传过来的用户登录时的menuid 代码
<input type="hidden" id="menuIds" value="$menuIds " >
2.8配置mvc.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<config>
<!-- <action path="/regAction" type="test.RegAction">
<forward name="failed" path="/reg.jsp" redirect="false" />
<forward name="success" path="/login.jsp" redirect="true" />
</action> -->
<action path="/menuAction" type="com.yuan.web.MenuAction">
</action>
<action path="/userAction" type="com.yuan.web.UserAction">
<forward name="index" path="/index.jsp" redirect="false"></forward>
<forward name="login" path="/login.jsp" redirect="false"></forward>
</action>
</config>
3、运行结果
3.1登录界面
3.2 001用户登入
3.3 002用户登入
3.3 003用户登入
3.4 000用户登入
谢谢观看^-^ ！！！
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