easyui權限管理


權限樹

所謂權限:

是為了讓不同的用戶可以操作系統中不同資源
直接點說就是不同的用戶可以看到左側不同的菜單


所謂角色:

指的是系統中的權限集合(每一個角色對應着哪些權限集合)

 

1、一星權限設計(用戶權限多對一)
?執行數據庫腳本
?建立實體類
?創建dao
?Web層創建
?更改展示的樹形菜單

實現思路:通過賬號和密碼查詢 是為了獲取菜單的id 獲取到里面的menuid后 可加載對應的菜單或以及子菜單

2、二星權限設計(用戶權限多對多)
?執行數據庫腳本sql
?修改原有的實體類
?建立實體類
?創建dao方法
?再寫一個權限集合表方法
?新增webservlet的方法
?新增登入界面,跳入前端樹形菜單展示每個對應的權限集合菜單

實現思路:用戶查詢登陸表 有數據代表已注冊 通過uid 查到中間表(一個uid查中間表的方法) 獲取到一個權限集合 對應多個數據 再進行遍歷uid查到的集合  然后拼接每一個map集合的menuid(這個menuid的集合就是那些數字 方法用in可得到多組父子關系)

權限表:

 

 

用戶表:

 

 

權限中間表:

 

先寫一個登錄界面:

<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>

 登錄后台

判斷是否有這個人

返回這個人的權限

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 {

	/**
	 * 登錄查詢用戶表
	 * 
	 * @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);
	}

	/**
	 * 通過中間表查詢登錄用戶所對應的權限
	 * 
	 * @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);
	}

}

  

開始執行:

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";
}
}

  獲取到登陸后的權限信息后就傳到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;">
		后台管理界面的菜單
		<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>

  就是獲取到信息,然后進行路徑的跳轉

$(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');
										}
									} ]
								});
							}
						}
					});
})

  菜單查詢:

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
	 *            分頁
	 * @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);
	}

	/**
	 * 查詢menu表的數據
	 * 
	 * @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表的數據格式不符合easyui樹形展示格式 需要轉換成easyui所能識別的格式
	 * 
	 * @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);
		// 遞歸
		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<>();
		// 循環將數據取出來
		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);
		}

	}
}

  效果圖


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