springmvc ztree 实现权限菜单的展示

深藏阁楼爱情的钟 2022-08-07 05:53 112阅读 0赞

**推荐最新技术springboot版权限管理（[java后台通用权限管理系统(springboot)][java_springboot]），采用最新技术架构，功能强大！**

**注：由于该项目比较老，所以没有采用maven管理，建议下载springboot权限管理系统，对学习和使用会更有帮助。**

**springboot权限管理系统介绍地址：[https://blog.csdn.net/zwx19921215/article/details/97806078][java_springboot]**

**springboot权限管理系统初级版下载地址：[http://zyshare.cn/resource/detail/3][http_zyshare.cn_resource_detail_3]**

**springboot权限管理系统高级版下载地址：[http://zyshare.cn/resource/detail/7][http_zyshare.cn_resource_detail_7]**

**springboot个人博客系统：[https://blog.csdn.net/zwx19921215/article/details/102665020][https_blog.csdn.net_zwx19921215_article_details_102665020]**

**前台js**

//打开菜单窗口
    function openMenuDialog(){
    	var selected = $("#list").datagrid('getSelected');
        if (selected != null) {
        	$("#id").val(selected.id);
        	queryMenus(selected.id);
        	$("#menuWindow").window("open");
        } else {
       	 $.messager.alert('提示', "未选择数据！"); 
        }
    }
    //角色-菜单信息入库
    function ajaxSubmit(rid,idstr){
    	$.post("${ctx}/roleMenu/save.jhtml",{"roleId":rid,"ids":idstr},function(obj){
    		$.messager.alert('提示',obj.msg);
    		$("#menuWindow").window('close');
    	},'json');
    }

<script type="text/javascript">
    var tree = "";
    var setting = {
    	check : {
    		chkboxType:{"Y":"ps","N":"ps"},//勾选checkbox对于父子节点的关联关系
    		chkStyle:"checkbox",
    		enable : true	//是否复选框
    	},
    	//数据
    	data : {
    		simpleData : {
    			enable : true
    		}
    	}
    };
    //查询菜单信息
    function queryMenus(roleId){
    	$.post('${ctx}/role/treedata.jhtml', {'roleId':roleId}, function(zNodes) {
    		for (var i = 0; i < zNodes.length; i++) {
    			if (zNodes[i].isParent) {
    
    			} else {
    				//zNodes[i].icon = "${ctxStatic}/images/532.ico";//设置图标
    			}
    		}
    		tree = $.fn.zTree.init($("#tree"), setting, zNodes);
    		tree.expandAll(true);//全部展开
    		//var nodes = treeObj.getNodes();
    	}, 'json');
    }
    //获取选中节点
    function onCheck(){
    	 var rid = $("#id").val();
    	 var treeObj=$.fn.zTree.getZTreeObj("tree");
         var nodes=treeObj.getCheckedNodes(true);
         var ids = new Array();
         for(var i=0;i<nodes.length;i++){
        	//获取选中节点的值
        	 ids.push(nodes[i].id);
    	    // v+=nodes[i].id + ",";
    	    //alert(nodes[i].id); 
         }
    	ajaxSubmit(rid,ids);     
    }
    </script>

**后台：action**

@RequestMapping(value = "/treedata.jhtml")
    	@ResponseBody
    	public String treedata(HttpServletRequest request, Model model) {
    		DynamicParams params = new DynamicParams(request);
    		List<Map<String, Object>> mapList = Lists.newArrayList();
    		
    		params.put("allMenu", "allMenu");
    		List<Menu> list = menuManager.findMenuList(params);
    		
    		List<RoleMenu> roleMenus = roleMenuManager.findList(params);
    		
    		for(int i=0;i<list.size();i++){
    			Menu e = list.get(i);
    			Map<String, Object> map = Maps.newHashMap();
    			map.put("id", e.getId());
    			map.put("pId", e.getParentId()!=null?e.getParentId():0);
    			map.put("name", e.getName());
    			for(RoleMenu roleMenu:roleMenus){
    				if(roleMenu.getMenuId()==e.getId()){
    					map.put("checked", true);
    				}
    			}
    			mapList.add(map);
    		}
    		return toJson(mapList);
    	}

**service**

public List<Menu> findMenuList(DynamicParams params) {
    		List<Menu> menus = new ArrayList<Menu>();
    
    		if ("allMenu".equals(params.getString("allMenu"))) {
    			menus = menuDao.findList(params);
    		} else {
    			// 通过用户查询角色
    			List<UserRole> userRoles = userRoleDao.findList(params);
    			// 通过角色查询菜单
    			List<RoleMenu> roleMenus = new ArrayList<RoleMenu>();
    			if (userRoles != null && userRoles.size() > 0) {
    				for (UserRole userRole : userRoles) {
    					params = new DynamicParams();
    					if (userRole != null) {
    						if (userRole.getRoleId().equals(params.getString("rid"))) {
    							break;
    						}
    						params.put("roleId", userRole.getRoleId().toString());
    						List<RoleMenu> rms = roleMenuDao.findList(params);
    						for (RoleMenu roleMenu : rms) {
    							roleMenus.add(roleMenu);
    						}
    					}
    				}
    			}
    
    			// 查询菜单信息
    			for (RoleMenu roleMenu : roleMenus) {
    				if (roleMenu != null) {
    					Menu menu = menuDao.find(roleMenu.getMenuId());
    					if(menu!=null){
    						menus.add(menu);
    					}
    				}
    			}
    			menus = removeDuplicate(menus);
    			Collections.sort(menus);
    		}
    		return menus;
    	}
    
    	/**
    	 * 去除菜单中重复项
    	 * 
    	 * @param list
    	 * @return
    	 */
    	private List<Menu> removeDuplicate(List<Menu> list) {
    		List<Menu> result = new ArrayList<Menu>();
    		Set<Long> menuIds = new HashSet<Long>();
    		for (int i = 0; i < list.size(); i++) {
    			Menu m = list.get(i);
    			if (m != null && menuIds.add(m.getId())) {
    				result.add(m);
    			}
    		}
    		return result;
    	}

![Center][]

[java_springboot]: https://blog.csdn.net/zwx19921215/article/details/97806078
[http_zyshare.cn_resource_detail_3]: http://zyshare.cn/resource/detail/3
[http_zyshare.cn_resource_detail_7]: http://zyshare.cn/resource/detail/7
[https_blog.csdn.net_zwx19921215_article_details_102665020]: https://blog.csdn.net/zwx19921215/article/details/102665020
[Center]: /images/20220805/147d83a1300349dabcf9769dd613305d.png