ajax从后台返回list类型到前台解析

function getUserByName(){
$.getJSON("getStudent?jsoncallback=?",function(data){
//alert(data);
$.each(data,function(i,item){
var tr="<tr><td>"+item.name+"</td><td>"+item.age+"</td></tr>";
//alert(item.name+":"+item.age);
$("#info").append(tr);
});
});
}

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

List<Student> sts = new ArrayList<Student>();
sts.add(new Student("鸣人",18));
sts.add(new Student("佐助",19));
sts.add(new Student("小樱",20));
sts.add(new Student("卡卡西",21));
System.out.println("111111111111111");
//组织json数据
String jsoncallback = request.getParameter("jsoncallback");
System.out.println(jsoncallback);
String json = "";
StringBuffer sbjson = new StringBuffer(jsoncallback+"([");
for(Student st : sts){
sbjson.append("{name:\""+st.getName()+"\",age:"+st.getAge()+"},");
}
sbjson.append("])");
json = sbjson.toString();
System.out.println(json);
response.setCharacterEncoding("utf-8");
response.setContentType("text/json");
PrintWriter out = response.getWriter();
out.print(json);
out.flush();
out.close();
}