ext中json页面处置接收的值

JSONArray jsonRoot = new JSONArray();
		JSONObject item = new JSONObject();
		item.put(UIConstants.JSON_ID, deptId);
		item.put(UIConstants.JSON_NAME, deptName);
		item.put(UIConstants.JSON_NODETYPE, "dept");
		jsonRoot.put(item);
		String jsonOrgs = jsonRoot.toString();
		request.setAttribute("jsonOrgs", jsonOrgs);

 	success: function(json){ 
					  var aa = json.responseText;
					  var data = eval('('+aa+')');
					  var bb=data.rows;
					  var sele = document.getElementById("s2");
					  sele.innerHTML = "";
					  var option2 = document.createElement('option');
					  	option2.value ="";
					  	option2.text= "请选择";
					  	option2.selected="selected";
					  	sele.add(option2);		
					  for(var i=0;i<bb.length;i++){
					  	var option = document.createElement('option');
					  	option.value = bb[i].id;
					  	option.text= bb[i].name;
					  	sele.add(option);					  	
					  }	 
				}