EasyUi权限

1、一星权限设计（用户权限多对一）

?执行数据库脚本
?建立实体类
?创建dao
?Web层创建
?更改展示的树形菜单

2、二星权限设计（用户权限多对多）
?执行数据库脚本
?修改原有的实体类
?建立实体类
?创建dao
?修改原有的dao
?新增web的方法
?新增登入界面，跳入前端树形菜单

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看到左侧不同的菜单

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

 

建立实体类（与数据库相对应的列段）

package com.entity;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class TreeNode {
	  private String id;
	  private String text;
	  private  List<TreeNode> children=new ArrayList<TreeNode>();
	  private  Map<String, Object> attributes=new HashMap<String, Object>();
	  
	  
	public String getId() {
	    return id;
	}

	public void setId(String id) {
	    this.id = id;
	}

	public String getText() {
	    return text;
	}

	public void setText(String text) {
	    this.text = text;
	}

	public List<TreeNode> getChildren() {
	    return children;
	}

	public void setChildren(List<TreeNode> children) {
	    this.children = children;
	}

	public Map<String, Object> getAttributes() {
	    return attributes;
	}

	public void setAttributes(Map<String, Object> attributes) {
	    this.attributes = attributes;
	}

	@Override
	public String toString() {
	    return "TreeNode [id=" + id + ", text=" + text + ", children=" + children + ", attributes=" + attributes + "]";
	}
	  

	}

　

　UserDao

package com.dao;
import java.sql.SQLException;
import java.util.List;
import java.util.Map;

import com.util.JsonBaseDao;
import com.util.JsonUtils;
import com.util.PageBean;
import com.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);
    }
    
    
    
    
    
    
    
}

　　

　MenuDao

package com.dao;

import java.sql.SQLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.entity.TreeNode;

import com.util.JsonBaseDao;
import com.util.JsonUtils;
import com.util.PageBean;
import com.util.StringUtils;

public class MenuDao extends JsonBaseDao{
	
	
	/** 
	 * 给前台返回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 SQLException 
	 * @throws IllegalAccessException 
	 * @throws InstantiationException 
	 */
	
	
	public List<TreeNode> listTreeNode(Map<String, String[]> paMap,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException{
		//我们调用下面的方法     ListMapTOListTreeNode
		List<Map<String, Object>> listMap = this.listMapAuth(paMap, pageBean);//上面调用下面的方法
		List<TreeNode> listTreeNode=new ArrayList<>();
		this.ListMapTOListTreeNode(listMap, listTreeNode);
		return listTreeNode;
		
	}
	
 /**
  * [{'menuid':001,'Menuname':’菜单管理‘：‘学生管理’},{''},{'menuid':001,'Menuname':’菜单管理‘：‘学生管理’},{''},]
  * @param paMap
  * @param pageBean
  * @return
  * @throws InstantiationException
  * @throws IllegalAccessException
  * @throws SQLException
  */
	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");//获取meuid,从前台传过来的
		if(StringUtils.isNotBlank(menuId)) {//如果id 不为空我们就拼接
			sql +=" and parentid="+menuId;
		}else {
			sql +=" and parentid=-1";//如果上面没有查我们就要查顶级节点
		}
	
		//存放着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");//获取meuid,从前台传过来的
		if(StringUtils.isNotBlank(menuId)) {//如果id 不为空我们就拼接
			//为什么将Parentid改成menuid
			//原因之前的方法，只能查询当前的节点的所有子节点集合，不能将当前节点给查询出来，
			sql +=" and menuId in ("+menuId+")";
		}else {
			sql +=" and menuId=000";//如果上面没有查我们就要查顶级节点
		}
		//存放着是数据库中的菜单信息
		List<Map<String, Object>> listMap= super.executeQuery(sql, pageBean);
		
		return listMap;
		
		
	
   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,'Menuname':’菜单管理‘：‘学生管理’},{''},{'menuid':001,'Menuname':’菜单管理‘：‘学生管理’},{''},]
    * 
    * @param listMap
    * @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);
	}
   }

}

　　

　UserAction

package com.web;

import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.framework.ActionSupport;

import com.dao.UserDao;



public class UserAction extends ActionSupport {
	
	private UserDao userDao=new UserDao();
	
/**
 * 登录方法。登录成功后跳转index.jsp
 * @param req
 * @param resp
 * @return
 */
	public String login(HttpServletRequest req, HttpServletResponse resp) {
		try {
			//系统中是否有当前登录用户
			try {
				Map<String, Object> map = this.userDao.list(req.getParameterMap(), null).get(0);
				//有
				if(map !=null && map.size() > 0) {
					StringBuilder sb=new StringBuilder();
					List<Map<String, Object>> menuIdArr = this.userDao.getMenuIdsBy(req.getParameterMap(), null);
					for (Map<String, Object> m : menuIdArr) {
						sb.append(","+m.get("menuId"));
					}
					req.setAttribute("menuIds", sb.substring(1));
					return "index";
				}else {
					//查询用户菜单中间表，获取对应menuid的集合
					//没有
					req.setAttribute("mag","用户名不存在");
					return "login";
				}
			} catch (Exception e) {
				req.setAttribute("mag","用户名不存在");
				return "login";
			}
		
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return "login";
		}
	   
		
	 }
	
	
	
	
}

　　

　　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    $.extends
			var content = '<iframe scrolling="no" frameborder="0" src="'+node.attributes.menuURL+'" width="99%" height="99%"></iframe>';
			if($('#menuTab').tabs('exists',node.text)){
//				存在执行选项卡选中已有选项卡的操作
				$('#menuTab').tabs('select',node.text);
			}else{
//				不存在执行新增的操作
				$('#menuTab').tabs('add',{    
				    title:node.text,    
				    content:content,    
				    closable:true
				});  
			}
			
		}
	    });  


})

　　

　在index.jsp里面加入web层传过来的用户登录时的menuid代码

<input type="hidden" id="menuIds" value="${menuIds}">

　　

　登陆页面：login.jsp

<%@ 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="${pageContext.request.contextPath }/userAction.action?methodName=login" method="post">
     uid:<input type="text" name="uid"><br>
     upwd:<input type="text" name="upwd"><br>
          <input type="submit">
   </form>
   <span style="color: red">${msg }</span>
</body>
</html>

　　

　MXL配置

<?xml version="1.0" encoding="UTF-8"?>
<config>
	
	<action path="/menuAction" type="com_tanhaifang.web.MenuAction"></action>
	
	<action path="/userAction" type="com_tanhaifang.web.UserAction">
		<forward name="index" path="/index.jsp" redirect="false" />
		<forward name="login" path="/login.jsp" redirect="false" />

	</action> 
	
</config>	

　

运行结果：

就只简单运行001啦！！！