Ext表格分页_后台代码

 public ActionForward queryUser(ActionMapping mapping, ActionForm form,

   HttpServletRequest request, HttpServletResponse response) {

  //UserForm userForm = (UserForm) form;

  UserService userService = (UserService)this.getBean("userService");

  List users = userService.queryUser();

  

  String start=request.getParameter("start");

  String limit=request.getParameter("limit");

  try {

   int index=Integer.parseInt(start);

   int pageSize=Integer.parseInt(limit);   

   

   if(users!=null && users.size()>0){

    String json="{totalProperty:"+users.size()+",root:[";

    for(int i=index;i<index+pageSize && i<users.size();i++){

     Custmer cust=(Custmer)users.get(i);

     json+="{id:'"+cust.getUserid()+"',name:'"+cust.getUsername()+"',phone:'"+cust.getPhone()+"'}";

     if(i!=pageSize+index-1 && i!=users.size()-1){

      json+=",";

     }    

    } 

    json+="]}";

    response.getWriter().write(json);

    System.out.println(json);

   }  

  } catch (Exception e) {

   e.printStackTrace();

  }

  return null;

 }