在上一篇博客中介绍了easyui入门
接下来介绍easyui权限
需求
因为每个人的权限不同，所以能够使用的功能肯定不一样
例：
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
权限树
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
实现二星权限设计（用户权限多对多）
数据库三张表
t_easyui_user_version2
t_easyui_usermenu
t_easyui_menu
建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 {
/**
* 用户登陆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);
}
/**
* 根据当前用户登陆的id去查询对应的所有菜单
* @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);
}
}
修改MenuDao，主要是增加了一个listMenuSef方法，分权处理
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_date1.json的字符串
* @param paMap 从前台传递过来的参数集合
* @param pageBean 分页
* @return
* @throws SQLException
* @throws IllegalAccessException
* @throws InstantiationException
*/
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<>();
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";
}
// 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");
// 为什么将parentid改为menuId?
// 原因在于之前的方法只能查询当前节点的所有子节点集合，不能将当前节点给查询出来
// 002 --》002001，002002，002003...
// 002，002001，002002，002003...
//
if(StringUtils.isNotBlank(menuId)) {
sql +=" and menuId in ("+menuId+")";
}else {
sql +=" and menuId=000";
}
// 存放的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);
// 将子节点先加到父节点当中，建立数据之间的父子关系 例：001
// 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);
}
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);
}
}
}
修改index.js，修改url
$(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
$('#menuTab').tabs('add',{
title:node.text,
content:content,
closable:true
});
}
}
});
})
在index.jsp中，传值menuids
如果没有这行代码，index.jsp无法使用$("#menuIds").val()
<input type="hidden" id="menuIds" value="${menuIds }">
UserAction控制器（判断有无此人，获取其权限，以及跳转页面）
package com.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.dao.UserDao;
import com.entity.TreeNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.util.ResponseUtil;
import com.zking.framework.ActionSupport;
public class UserAction extends ActionSupport {
private UserDao userDao = new UserDao();
/**
* 登陆成功后跳转index.jsp
* @param req
* @param resp
* @return
* @throws InstantiationException
* @throws IllegalAccessException
* @throws SQLException
*/
public String login(HttpServletRequest req,HttpServletResponse resp) {
try {
// 系统中是否有当前登陆用户
Map<String, Object> map = null;
try {
map = this.userDao.list(req.getParameterMap(), null).get(0);
} catch (Exception e) {
req.setAttribute("msg", "用户不存在");
return "login";
}
// 有 查询用户菜单中间表,获取对应menuid集合
if(map != null && map.size() >0) {
// [{Menuid:002,...},{Menuid:002,.....}]
// 002,003
StringBuilder sb = new StringBuilder();
List<Map<String, Object>> menuIdArr = this.userDao.getMenuByUid(req.getParameterMap(), null);
for (Map<String, Object> m : menuIdArr) {
sb.append(","+m.get("menuId"));
// ,002,003
}
req.setAttribute("menuIds", sb.substring(1));
return "index";
}else {
// 没有
req.setAttribute("msg", "用户不存在");
return "login";
}
} catch (InstantiationException | IllegalAccessException | SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return "login";
}
}
}
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.web.MenuAction">
</action>
<action path="/userAction" type="com.web.UserAction">
<forward name="index" path="/index.jsp" redirect="false"></forward>
<forward name="login" path="/login.jsp" redirect="false"></forward>
</action>
</config>
login.jsp界面
<%@ 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">${msg}</span>
</body>
</html>
index.jsp界面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>后台主界面</title>
<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath }/static/js/public/easyui5/themes/default/easyui.css">
<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath }/static/js/public/easyui5/themes/icon.css">
<script type="text/javascript"
src="${pageContext.request.contextPath }/static/js/public/easyui5/jquery.min.js"></script>
<script type="text/javascript"
src="${pageContext.request.contextPath }/static/js/public/easyui5/jquery.easyui.min.js"></script>
<script type="text/javascript"
src="${pageContext.request.contextPath }/static/js/index.js"></script>
</head>
<body class="easyui-layout">
<input type="hidden" id="menuIds" value="${menuIds }">
<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;">
<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="menuTab" class="easyui-tabs" style="">
<div title="首页" style="padding: 20px; display: none;">欢迎界面</div>
</div>
</div>
</body>
</html>
效果：
login.jsp
index.jsp
如果用户不存在时点击提交按钮：
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