easy ui tree

action JSON的值是这样的：
{"systemMenuTreeList":[{"attributes":null,"children":[],"iconCls":null,"id":"282","state":"open","text":"test"},{"attributes":null,"children":[{"attributes":null,"children":[{"attributes":null,"children":[{"attributes":{"menuUrl":"dd"},"children":[],"iconCls":"ico-sub_menu","id":"1","state":"open","text":"系统管理"},{"attributes":{"menuUrl":"ee"},"children":[],"iconCls":"ico-sub_menu","id":"2","state":"open","text":"模组管理"},{"attributes":{"menuUrl":"ff"},"children":[],"iconCls":"ico-sub_menu","id":"3","state":"open","text":"父菜单管理"},{"attributes":{"menuUrl":null},"children":[],"iconCls":"ico-sub_menu","id":"4","state":"open","text":"子菜单管理"},{"attributes":{"menuUrl":null},"children":[],"iconCls":"ico-sub_menu","id":"5","state":"open","text":"用户管理"},{"attributes":{"menuUrl":null},"children":[],"iconCls":"ico-sub_menu","id":"6","state":"open","text":"用户权限管理"}],"iconCls":"icon-save","id":"1","state":"open","text":"系统管理"}],"iconCls":"icon-save","id":"1","state":"open","text":"系统管理"}],"iconCls":"ico-systems","id":"1","state":"open","text":"系统管理"},{"attributes":null,"children":[{"attributes":null,"children":[{"attributes":null,"children":[{"attributes":{"menuUrl":"www.baidu.com"},"children":[],"iconCls":"ico-sub_menu","id":"7","state":"open","text":"测试1"},{"attributes":{"menuUrl":"www.126.com"},"children":[],"iconCls":"ico-sub_menu","id":"8","state":"open","text":"测试2"},{"attributes":{"menuUrl":"cc"},"children":[],"iconCls":"ico-sub_menu","id":"9","state":"open","text":"测试3"}],"iconCls":"icon-save","id":"2","state":"open","text":"测试程序"}],"iconCls":"icon-save","id":"2","state":"open","text":"测试"}],"iconCls":"ico-systems","id":"2","state":"open","text":"测试"}]}

然后easy ui需要的JSON数据格式是：
[{
    "id":1,
    "text":"Folder1",
    "iconCls":"icon-save",
    "children":[{
        "text":"File1",
        "checked":true
    },{
        "text":"Books",
        "state":"open",
        "attributes":{
            "url":"/demo/book/abc",
            "price":100
        },
        "children":[{
            "text":"PhotoShop",
            "checked":true
        },{
            "id": 8,
            "text":"Sub Bookds",
            "state":"closed"
        }]
    }]
},{
    "text":"Languages",
    "state":"closed",
    "children":[{
        "text":"Java"
    },{
        "text":"C#"
    }]
}]



/*
* 获取系统菜单树JSON
*/
function getSystemMenuTree(){
//获取系统菜单树JSON数据
$('#menuTree').tree({     
        url: "../admin/systemMenuTreeJsonAction!getSystemMenuTreeJson", 
        loadFilter: function(data){ 
        //alert(data.systemMenuTreeList);
        return data.systemMenuTreeList ;//这里必须经过处理，不能直接返回data            //return data;       
        } ,
        formatter:function(node){
    //return "<a href='#'>"+ node.text + "</a>";
        return node.text;
    },
    onClick: function(node){
    //alert($('#menuTree').tree('isLeaf',node.target));
    //alert(node.attributes.menuUrl);
    if($('#menuTree').tree('isLeaf',node.target)){
    alert(node.attributes.menuUrl);
    //window.location.href=node.attributes.menuUrl;
    window.navigate(node.attributes.menuUrl);
    alert(node.text);  // alert node text property when clicked
    }
    }
    });  
}