我发现一个，求解决

action中方法：
public String aa() throws Exception{
JSONObject result=new JSONObject();
result.put("totalItems",11);
result.put("totalPages",4);
result.put("currentPage",1);
byte[] data=result.toString().getBytes("UTF-8");
input=new ByteArrayInputStream(data);
return "aa_suc";
}
jsp页面：
<script type="text/javascript" src="script/jquery-1.7.2.js"></script>
<script type="text/javascript">
$(function(){
alert("11111");
var url="dept_aa.action";
$.get(url,function(json){
alert("2222");
var totalItems=json.totalItems;
alert(totalItems);//这里是空值？？？？？
var totalPages=json.totalPages;
var currentPage=json.currentPage;
});
});
Strut。xml：
<package name="dept" namespace="/" extends="default">
<action name="dept_*" class="deptAction" method="{1}">
<result>/suc.jsp</result>
<result name="showAll_suc" type="stream">
<param name="inputName">input</param>
</result>
<result name="aa_suc" type="stream">
<param name="inputName">input</param>
</result>