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jQueryEasyUi

Jquery easyui tree 一些常见操作

Tree:

easyui tree的异步加载实现很简单，easyui的中文API文档中有实例（http://api.btboys.com/easyui/）——创建异步树形菜单，就是在tree node 元素中要有一个id属性，同时还需要state的属性（state为'closed'的时候，点击节点时会自动请求，并且将id作为参数Post到后台），只加载一次。

远程异步加载：

http://www.cnblogs.com/CoreCaiNiao/archive/2010/08/20/1804387.html

$(function(){
	 $('#tt2').tree({   
		 checkbox: false,   
		 url: '/common/GetGoupJsonByPid.ashx?pid=0',   
		 onBeforeExpand:function(node,param){
			 $('#tt2').tree('options').url = "/common/GetGoupJsonByPid.ashx?pid=" + node.id;                      
			 //只加载一次。 
		 },               
		 onClick:function(node){             
			 alert(node.id); 
		 }   
	 });   
 });

例子：

JSP:

<script type="text/javascript" src="<%=request.getContextPath()%>/js/app/sysManagement/sysMenu.js" charset="UTF-8"></script>
<html>
<style>
	#editForm{}
	#editForm input{width:300px;}
	#editForm select{width:300px;}
</style>
<body>
	<div id="treeMenu" class="easyui-menu" style="width:120px;"></div>
	
	<div class="easyui-layout" data-options="fit:true,border:false" style="width: 100%; height: 100%;">
		<div data-options="region:'north',border:false,title:'菜单管理', iconCls: 'icon-tip'" style="height:55px">
			<div id="toolbar" class="easyui-toolbar" style="margin-top:5px;">
					<a  class="easyui-linkbutton"
						data-options="plain: true, iconCls: 'ope-add'"
						onclick="javascript:addBrothers()">新增同级</a>
					<a  class="easyui-linkbutton"
						data-options="plain: true, iconCls: 'ope-add'"
						onclick="javascript:addChildren();">新增下级</a>
					<a  class="easyui-linkbutton"
						data-options="plain: true, iconCls: 'ope-remove'"
						onclick="javascript:removeMenu();">删除</a>
					<a  class="easyui-linkbutton"
						data-options="plain: true, iconCls: 'ope-save'"
						onclick="javascript:saveOrUpdateMenu();">保存</a>	
			</div> 
		</div>
		
		<div data-options="region:'center',border:false" >
			<div class="easyui-layout" data-options="fit:true,border:false" style="width: 100%; height: 100%;">
				
				<div region="west" data-options="split:true,border:true,minWidth: 150, maxWidth: 500" style="width:230px;">					
					<ul id="tree"></ul>					
				</div>
				<div data-options="region:'center',border:false" >
					<div style="margin:5px;">
					   <form name="editForm" method="post" id="editForm" class="easyui-SuperEditForm">
						<input id="id" name="id" type="hidden"/>
						<input id="supId" name="supId" type="hidden"/>						
					   		<table class="tableForm_L" width="100%" border="0" cellpadding="0" cellspacing="1">
								   <tr>
										<th width="15%">
											菜单名
											<span class="red">*</span>
										</th>
										<td width="85%">
											<input type="text" name="menuName" id="menuName" class="easyui-validatebox"
												data-options="required:true,validType:'length[1,200]'" />											
										</td>
									</tr>
									<tr>
										<th width="15%">
											链接URL
											<span class="red">*</span>											
										</th>
										<td width="85%">
											<input type="text" name="menuUrl" id="menuUrl" class="easyui-validatebox" data-options="required:true"/>
										</td>
									</tr>		
									<tr>
										<th width="15%">
											顺序ID																						
										</th>
										<td width="85%">
											<input type="text" name="orderId" id="orderId" class="easyui-validatebox" />
										</td>
									</tr>								
									<tr>
										<th  width="15%">
											是否启用
											<span class="red">*</span>
										</th>
										<td width="85%">
											<select id="enabledFlag" name="enabledFlag"   class='easyui-combobox' 
											  	data-options="required:true,panelHeight:'auto',editable:false,readonly:false">
											  	<option value="Y">是</option>  
								    			<option value="N">否</option>  
		                                   	</select>										
										</td>
									</tr>
									<tr>
										<th width="15%">备 注</th>
										<td colspan="3">
										<textarea cols="100" rows="13" height='auto' name="remark" id="remark"></textarea>
											
										</td>
									</tr>
								</table>			
							
						</form>
					</div>
				</div>
			</div>
		</div>
</div>
	
</body>
</html>

sysMenu.js

var $editForm;
var $tree;
var hasNew = false;
$(function() {
	$tree = $("#tree");
	$editForm = $("#editForm");	

	$tree.tree({
		url : root + 'sysMenu/listMenus.do?pid=-1',
		iconCls : 'icon-save',
		checkbox : false,
		lines : true,
		animate : true,
		onBeforeExpand : function(node, param) {
			$tree.tree('options').url = root + "sysMenu/listMenus.do?pid="
					+ node.id; // 只加载一次
		},
		onLoadSuccess : function(node, data) {
		},
		onSelect : function(node) {
			if (node.id == -1)	return;
			if(node.id.indexOf('newNode') != -1){
				var pidStr = node.id;
				var pid = pidStr.split("newNode")[1];
				$editForm.find("input").val("");
				$("#supId").val(pid);
				$("#remark").val("").text("");	
				$("#menuName").val(node.text);
			}else{
				$tree.tree('expand',node.target)
				getMenuDetail(node.id);
			}
		}

	});

	
});
	

	function getMenuDetail(id){
		$.ajax({
	         url: root + "sysMenu/getMenuDetail.do?id="+id,
	         type: "GET", 
	         dataType: "json",
	         async:false,
	         success: function (data, textStatus, XMLHttpRequest) {
	        	  if(data != null){
	      			$("#id").val(data.id);
	      			$("#supId").val(data.supId);
	      			$("#menuName").val(data.menuName);
	      			$("#menuUrl").val(data.menuUrl);
	      			$("#orderId").val(data.orderId);
	      			$('#enabledFlag').combobox('setValue', data.enabledFlag);
	      			$("#remark").val(data.remark).text(data.remark);	   
	      			
	      		  }else{
	        		  $.messager.alert('提示','获取菜单详情失败!','error');	        		 
	        	  }
	        	 
	         }
	     });
	}

	
	function saveOrUpdateMenu(){
		if (!$editForm.form('validate')) return;
		var selected = $tree.tree('getSelected');
		if(selected == null)
			$.messager.alert('提示','请选择一个节点','info');	 
		
		var formData=$editForm.serializeArray();
		
		var sysMenu = {};
		$.each(formData,function(i,field){
			sysMenu[field.name] = field.value;
		});
		
		
		$.ajax({
	         url:root+'sysMenu/saveOrUpdateMenu.do', 
	         data: sysMenu,
	         type: "post", 
	         async:false,
	         success: function (data, textStatus, XMLHttpRequest) {
	        	 if(data != null){
	        		 $.messager.alert('提示','保存成功！','info',function(){
	        			 hasNew = false;
	        			 var selected = $tree.tree('getSelected');
	        			 var parent = $tree.tree('getParent',selected.target);
	        			 $tree.tree('reload',parent.target);
	        		 });
	        		 
	        	 }else{
	        		 $.messager.alert('提示','保存失败！','error');
	        	 }
	        	 
	         }
	     });
		
	}
	
	function removeMenu(){
		var selected = $tree.tree('getSelected');
		if(selected == null){
			$.messager.alert('提示','请选择一个节点','info');	 
			return;
		}
		
		if(selected.id.indexOf('newNode') != -1){
			$tree.tree('remove',selected.target);
			hasNew = false;
		}else{
			$.messager.confirm('提示', "确认删除节点'"+selected.text+"'?", function(r){
				if (r){
					$.ajax({
					     url : root + "sysMenu/removeMenu.do?id="+selected.id,
					     type: 'GET',
					     timeout: 60000,
					     success : function(data, textStatus, jqXHR){		
					    	 if('SUCCESS' == data){
					    		 hasNew = false;
					    		 $tree.tree('remove',selected.target);
					    		 $.messager.alert('提示','删除成功！','info'); 
					    	 }else{
					    		 $.messager.alert('提示','删除失败！','error'); 
					    	 }
							 									
					     }
					});
				}
			});
		}
		
	}
	
	
	
	function addBrothers(){
		if(!validate()) return;
		
		var selected = $tree.tree('getSelected');
		var parent = $tree.tree('getParent',selected.target);
		
		addNewNode(parent);
	}

	
	function addChildren(){
		if(!validate()) return;
		
		var children = $tree.tree('getSelected');
		addNewNode(children);
	}
	
	
	function addNewNode(parent){
		var data = {};
		data.id = "newNode"+parent.id; //onSelect时的node节点不含pid，所以需要加上
		data.pid = parent.id;
		data.text = "新建节点";
		data.state = "open";
		var d = new Array();
		d.push(data);
		
		var param = {};
		param.parent = parent.target;
		param.data = d;
		$tree.tree('append',param);
		
		var node = $tree.tree('find', data.id);
		$tree.tree('select', node.target);
	}
	
	
	function validate(){
		var selected = $tree.tree('getSelected');
		if(selected == null){
			$.messager.alert('提示','请选择一个节点','info');	 
			return false;
		}
		var text = selected.text;
		if(selected.id == -1){
			$.messager.alert('提示','根节点不可新增节点','info');	 
			return false;
		}
		if (selected.id.indexOf('newNode') != -1 || hasNew) {
            $.messager.alert("提示", "请保存或删除新增节点后再新增！", "info");
            return false;
        }
		hasNew = true;
		return true;
	}

Controller:

// =================================================================菜单管理================================
	
	@RequestMapping(value = "sysMenu/listMenus.do", method = {RequestMethod.GET,RequestMethod.POST})
	@ResponseBody
	public List<MenuTree> listMenus(@RequestParam(required=false) long pid) {
		logger.debug(" listMenus begin [pid] = " + pid);
		List<MenuTree> result = null;
		try {			
			result =  sysMenuDS.listMenus(pid);
		} catch(Exception e) {
			logger.error("listMenus error :" + e.getMessage());
			e.printStackTrace();
		} 
		logger.debug(" listMenus end ..");
		return result;		
	}
	
	
	/**
	 * 获取配额详情
	 * @param id
	 * @param parentId
	 * @return
	 */
	@RequestMapping(value = "sysMenu/getMenuDetail", method = RequestMethod.GET)
	@ResponseBody
	public SysMenu getMenuDetail(Long id) {
		logger.debug("getMenuDetail begin [id] = " + id);
		SysMenu menu = null;
		try {
			menu = sysMenuDS.getMenuDetail(id);
		} catch(Exception e) {
			logger.error("getMenuDetail error :" + e.getMessage());
			e.printStackTrace();
		} 
		logger.debug("getMenuDetail end ..");
		return menu;
	}
	
	@RequestMapping(value = "sysMenu/saveOrUpdateMenu", method = RequestMethod.POST)
	@ResponseBody
	public String saveOrUpdateMenu(SysMenu menu){
		
		logger.debug("saveOrUpdateMenu begin ..");		
		try {
			sysMenuDS.saveOrUpdateMenu(menu);
		} catch(Exception e) {
			logger.error("saveOrUpdateMenu error :" + e.getMessage());
			e.printStackTrace();
		} 
		logger.debug("saveOrUpdateMenu end ..");
		return Constants.RESULT_SUCCESS;
	}
	
	
	@RequestMapping(value = "sysMenu/removeMenu", method = RequestMethod.GET)
	@ResponseBody
	public String removeMenu(long id){
		
		logger.debug("removeMenu begin ..");		
		try {
			sysMenuDS.removeMenu(id);
		} catch(Exception e) {
			logger.error("removeMenu error :" + e.getMessage());
			e.printStackTrace();
		} 
		logger.debug("removeMenu end ..");
		return Constants.RESULT_SUCCESS;
	}

Service:

@Service("iSysMenu")
public class SysMenuDS implements ISysMenu {

	private static final Logger logger = LoggerFactory.getLogger(SysMenuDS.class);
	
	@Autowired
	private ISysMenuDao menuDao;

	/**
	 * 菜单列表
	 */
	@Override
	public List<MenuTree> listMenus(long pid) {
		if(pid == 0l) 
			return new ArrayList<MenuTree>();
		
		List<SysMenu> menus = menuDao.findByParentId(pid);
		
		List<MenuTree> trees = convertCollectionToMenuTree(menus);
		if(pid == -1){
			trees = addRoot(trees);
		}
		return trees;
	}
	
	
	/**
	 * 获取详情
	 */
	@Override
	public SysMenu getMenuDetail(Long id) {
		if(id == 0l) 
			return null;
		
		SysMenu menu = menuDao.findByMenuId(id);
		return menu;
	}

	
	/**
	 * 保存或修改菜单
	 */
	@Override
	public void saveOrUpdateMenu(SysMenu menu) {
		if(menu.getId() != null){
			SysMenu m = menuDao.findByMenuId(menu.getId());
			m.setMenuName(menu.getMenuName());
			m.setMenuUrl(menu.getMenuUrl());
			m.setOrderId(menu.getOrderId());
			m.setEnabledFlag(menu.getEnabledFlag());
			m.setRemark(menu.getRemark());
			ObjectUtil.setUpdatedBy(m);
			menu = m;
		}else{
			ObjectUtil.setCreatedBy(menu);
		}
		
		menuDao.save(menu);
	}


	
	@Override
	public void removeMenu(long id) {
		if(hasChildren(id)){
			menuDao.deleteChildrenById(id);
		}
		menuDao.remove(id);
	}


	/**
	 * 添加根节点
	 * @param children
	 * @return
	 */
	private List<MenuTree> addRoot(List<MenuTree> children) {
		List<MenuTree> result = new ArrayList<MenuTree>();
		MenuTree root = new MenuTree();
		root.setId(String.valueOf(-1l));
		root.setPid(String.valueOf(-1l));
		root.setText("菜单管理");
		root.setChecked(false);
		root.setIconCls("");
		root.setState("open");
		root.setChildren(children);
		result.add(root);
		return result;
	}
	
	
	public boolean hasChildren(long id){
		List<SysMenu> children = menuDao.findByParentId(id);
			
		if(children != null && children.size() > 0){
			return true;
		}
		return false;	
	}
	
	
	public MenuTree convertToMenuTree(SysMenu menu){
		MenuTree tree = new MenuTree();
		tree.setId(String.valueOf(menu.getId()));
		tree.setPid(String.valueOf(menu.getSupId()));
		tree.setText(menu.getMenuName());
		if(hasChildren(menu.getId())){					
			tree.setState("closed");
		}else{					
			tree.setState("open");
		}
		return tree;
	}
	
	
	public List<MenuTree> convertCollectionToMenuTree(List<SysMenu> ls){
		List<MenuTree> trees = new ArrayList<MenuTree>(); 
		if(ls == null || ls.size() == 0)
			return trees;
		
		for(SysMenu menu : ls){
			trees.add(convertToMenuTree(menu));
		}
				
		return trees;
	}
	
}

相关CSS：

.icon-tip {
	background: url('icons/tip.png') no-repeat;
}


.tree-folder-open {
	background: url('images/tree_folder_open.gif') no-repeat;
}

.tree-folder {
	display: inline-block;
	background: url('images/tree_folder.gif') no-repeat;
	width: 16px;
	height: 18px;
	vertical-align: middle;
}



.tree-node-selected {
	background: url('images/tree_selected_bg.png') left bottom no-repeat;
	height: 26px;
	line-height: 26px;
}

效果图：