easyui权限管理

2024-03-17 18:17:46

权限树

所谓权限：

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

所谓角色：

指的是系统中的权限集合(每一个角色对应着哪些权限集合)

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

实现思路：通过账号和密码查询是为了获取菜单的id 获取到里面的menuid后可加载对应的菜单或以及子菜单

2、二星权限设计（用户权限多对多）
?执行数据库脚本sql
?修改原有的实体类
?建立实体类
?创建dao方法
?再写一个权限集合表方法
?新增webservlet的方法
?新增登入界面，跳入前端树形菜单展示每个对应的权限集合菜单

实现思路：用户查询登陆表有数据代表已注册通过uid 查到中间表（一个uid查中间表的方法）获取到一个权限集合对应多个数据再进行遍历uid查到的集合然后拼接每一个map集合的menuid（这个menuid的集合就是那些数字方法用in可得到多组父子关系）

权限表：

用户表：

权限中间表：

先写一个登录界面：

<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>

配置 mvc.xml

<?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.chenjiahao.web.MenuAction">
			<forward name="index" path="/index.jsp" redirect="false" />
	</action>
	<action path="/userAction" type="com.chenjiahao.web.UserAction">
		<forward name="index" path="/index.jsp" redirect="false" />
	</action>
</config>

　登录后台

判断是否有这个人

返回这个人的权限

package com.chenjiahao.dao;

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

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

public class UserDao extends JsonBaseDao {

	/**
	 * 登录查询用户表
	 * 
	 * @param map
	 * @param pageBean
	 * @return
	 * @throws Exception
	 */

	public List<Map<String, Object>> list(Map<String, String[]> map, PageBean pageBean) throws Exception {

		String sql = "SELECT *FROM t_easyui_user_version2 WHERE TRUE";
		String uid = JsonUtils.getParamVal(map, "uid");
		String upwd = JsonUtils.getParamVal(map, "upwd");
		if (StringUtils.isNotBlank(uid)) {
			sql = sql + " and uid=" + uid;
		}
		if (StringUtils.isNotBlank(upwd)) {
			sql = sql + " and upwd=" + upwd;
		}

		return super.executeQuery(sql, null);
	}

	/**
	 * 通过中间表查询登录用户所对应的权限
	 * 
	 * @param string
	 * @param pageBean
	 * @return
	 * @throws Exception
	 */
	public List<Map<String, Object>> listMenu(String uid, PageBean pageBean) throws Exception {

		String sql = "SELECT*FROM t_easyui_usermenu WHERE TRUE";

		if (StringUtils.isNotBlank(uid)) {
			sql = sql + " and uid=" + uid;
		}

		return super.executeQuery(sql, null);
	}

}

开始执行：

public class UserAction extends ActionSupport {

private UserDao userDao = new UserDao();

/**
* @param request
* @param response
* @return
* @throws Exception
*/
public String login(HttpServletRequest request, HttpServletResponse response) throws Exception {
List<Map<String, Object>> list = this.userDao.list(request.getParameterMap(), null);
if (list != null && list.size() > 0) {
List<Map<String, Object>> listMenu = this.userDao.listMenu(request.getParameter("uid"), null);
StringBuilder sb = new StringBuilder();
for (Map<String, Object> map : listMenu) {
sb.append("," + map.get("menuId"));
}
request.setAttribute("menuHid", sb.substring(1));

} else {
return "login";
}
return "index";
}
}

　　获取到登陆后的权限信息后就传到Index.jsp了

<body class="easyui-layout">
<input type="hidden" id="menuHid" value="${menuHid }">
	<div data-options="region:'north',border:false"
		style="height: 60px; background: #B3DFDA; padding: 10px">north
		region</div>
	<div data-options="region:'west',split:true,title:'West'"
		style="width: 150px; padding: 10px;">
		后台管理界面的菜单
		<ul id="tt"></ul>
	</div>
	<div
		data-options="region:'east',split:true,collapsed:true,title:'East'"
		style="width: 100px; padding: 10px;">east region</div>
	<div data-options="region:'south',border:false"
		style="height: 50px; background: #A9FACD; padding: 10px;">south
		region</div>
	<div data-options="region:'center',title:'Center'">
	<div id="menuTabs" class="easyui-tabs" style="">   
    <div title="Tab1" style="padding:20px;display:none;">   
        tab1    
    </div>   
  
</div>  
	</div>
</body>

　　就是获取到信息，然后进行路径的跳转

$(function() {
	$('#tt')
			.tree(
					{
						url : 'menuAction.action?methodName=treeMenu&&menuHid='+$("#menuHid").val(),
						onClick : function(node) {
							var content = '<iframe scrolling="no" frameborder="0" src="'
									+ node.attributes.menuURL
									+ '" width="99%" height="99%"></iframe>';
							if ($('#menuTabs').tabs('exists', node.text)) {
								$('#menuTabs').tabs('select', node.text)
							} else {
								$('#menuTabs').tabs('add', {
									title : node.text,
									content : content,
									closable : true,
									tools : [ {
										iconCls : 'icon-mini-refresh',
										handler : function() {
											alert('refresh');
										}
									} ]
								});
							}
						}
					});
})

　　菜单查询：

package com.chenjiahao.dao;

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

import com.chenjiahao.entity.TreeNode;
import com.chenjiahao.util.JsonBaseDao;
import com.chenjiahao.util.JsonUtils;
import com.chenjiahao.util.PageBean;
import com.chenjiahao.util.StringUtils;

public class MenuDao extends JsonBaseDao {

	private static final Map<String, String[]> TreeNode = null;

	/**
	 * 
	 * @param map
	 *            request.getParameterMap
	 * @param pageBean
	 *            分页
	 * @return
	 * @throws SQLException
	 * @throws IllegalAccessException
	 * @throws InstantiationException
	 */
	public List<TreeNode> list(Map<String, String[]> map, PageBean pageBean) throws Exception {

		List<Map<String, Object>> listMenu = this.listMenuSet(map, pageBean);
		List<TreeNode> treeNodeList = new ArrayList<>();
		menu2TreeNodelist(listMenu, treeNodeList);

		return treeNodeList;
	}

	public List<Map<String, Object>> listMenuSet(Map<String, String[]> map, PageBean pageBean) throws Exception {
		String sql = "select * from t_easyui_menu where true";
		String id = JsonUtils.getParamVal(map, "menuHid");

		if (StringUtils.isNotBlank(id)) {
			sql = sql + " and menuid in (" + id + ")";

		} else {
			sql = sql + " and menuid=-1";
		}
   
		return super.executeQuery(sql, pageBean);
	}

	/**
	 * 查询menu表的数据
	 * 
	 * @param map
	 * @param pageBean
	 * @return
	 * @throws SQLException
	 * @throws IllegalAccessException
	 * @throws InstantiationException
	 */
	public List<Map<String, Object>> listMenu(Map<String, String[]> map, PageBean pageBean) throws Exception {
		String sql = "select * from t_easyui_menu where true";
		String id = JsonUtils.getParamVal(map, "id");
		if (StringUtils.isNotBlank(id)) {
			sql = sql + " and parentid=" + id;

		} else {
			sql = sql + " and parentid=-1";
		}

		return super.executeQuery(sql, pageBean);
	}

	/**
	 * menu表的数据格式不符合easyui树形展示格式 需要转换成easyui所能识别的格式
	 * 
	 * @param map
	 * @param treeNode
	 * @throws SQLException
	 * @throws IllegalAccessException
	 * @throws InstantiationException
	 */
	private void menu2TreeNode(Map<String, Object> map, TreeNode treeNode) throws Exception {
		treeNode.setId(map.get("Menuid").toString());
		treeNode.setText(map.get("Menuname").toString());
		treeNode.setAttributes(map);
		// 递归
		Map<String, String[]> jspMap = new HashMap<>();
		jspMap.put("id", new String[] { treeNode.getId() });
		List<Map<String, Object>> listMenu = this.listMenu(jspMap, null);

		List<TreeNode> treeNodeList = new ArrayList<>();
		// 循环将数据取出来
		menu2TreeNodelist(listMenu, treeNodeList);
		treeNode.setChildren(treeNodeList);

	}

	private void menu2TreeNodelist(List<Map<String, Object>> mapList, List<TreeNode> treeNodeList) throws Exception {
		TreeNode treeNode = null;
		for (Map<String, Object> map : mapList) {
			treeNode = new TreeNode();
			menu2TreeNode(map, treeNode);
			treeNodeList.add(treeNode);
		}

	}
}

　　效果图

码农公寓

权限树

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