Jquery zTree 树控件异步加载操作

var setting = {
 async: {
  enable: true,
  url:InitServiceIpsData.action,
  autoParam:[id, name],
  dataFilter: filter 
 },
 

//过滤异步加载ztree时返回的数据 
 function filter(treeId, parentNode, childNodes) {
 if (!childNodes) 
  return null; 
 childNodes = eval((+childNodes+)); //必须转换为[{id:103,pId:1,name:'子节点3'}];这样的格式 
 return childNodes;
 }

public String InitServiceIpsData()
 {
 HttpServletRequest request = ServletActionContext.getRequest();
 String id = request.getParameter(id);
 String name = request.getParameter(name);
 System.out.println(请求获取+name+的ip列表);
  
 List<hashmap<string,object>> list = new ArrayList<hashmap<string,object>>();  
 for(int i = 1; i <= 2; i++){ 
  HashMap<string,object> hm = new HashMap<string,object>();  
  hm.put(id, id + 0 + i);
  hm.put(pId, id);
  hm.put(name, name + _IP_ + i);
  hm.put(isParent, false);
  list.add(hm);
 } 
  
 JSONArray finalJson = JSONArray.fromObject(list);
 this.initServiceIpsData = finalJson.toString();
 return SUCCESS;
 }</string,object></string,object></hashmap<string,object></hashmap<string,object>