struts2 JSON插件怪异的问题

private FenleiBizIntf fenleiBizIntf = new FenleiBizImpl();

    private Fenlei fenlei;

    List<Fenlei> fenleilist = null;

    private boolean message = false;

    public boolean isMessage() {

       return message;

    }

    public void setMessage(boolean message) {

       this.message = message;

    }

    public List<Fenlei> getFenleilist() {

       return fenleilist;

    }

    public void setFenleilist(List<Fenlei> fenleilist) {

       this.fenleilist = fenleilist;

    }

    public Fenlei getFenlei() {

       return fenlei;

    }

    public void setFenlei(Fenlei fenlei) {

       this.fenlei = fenlei;

    }

   

    public String addFenleiAction()

    {

       message = fenleiBizIntf.addFenlei(fenlei);

      

       fenleilist = fenleiBizIntf.getFenleiAll(null, null);

      

      

       return SUCCESS;

        

    }

 

页面中：

 

function ajaxAddFenlei()

       {

              var fenleiname = $('#fenleiname').val();

              var fenleisupname = $('#fenleisupname').val();

             

              $.ajax

              (

                  {

                     url:,'addFenleiAction!addFenleiAction.action'

                     secureuri:false,//一般设置为false

                     dataType: 'json',//返回值类型 一般设置为json

                     data: "fenlei.name="+fenleiname+"      &fenlei.supname="+fenleisupname,

                    

                     success: function (data, status)  //服务器成功响应处理函数

                     {

                        

                         if(data.message==true)

                         {

                            alert("恭喜您，新增类别成功!");

                            $('#fenleiid').empty();

                            for(var i = 0,len = data.fenleilist.length; i<len; i++)

                            {

                                //alert(data.fenleilist[i].id+'-------');

                                //alert(data.fenleilist[i].name+'----');

                                if(i==len-1)

                                {

                                  

                                $('#fenleiid').append($("<option value='"+data.fenleilist[i].id+"'  selected='selected'>"+data.fenleilist[i].name+"</option>"));

                                }

                               

                                else

                                {

                               

                                $('#fenleiid').append($("<option value='"+data.fenleilist[i].id+"'>"+data.fenleilist[i].name+"</option>"));

                                  

                                }

                           

                            }

                           

                           

                                $('#fenleiid').append($("<option value=-1>新增类别</option>"));

                                closeDiv('aaaa');

                               

                         }

                     },

                     error: function (data, status, e)//服务器响应失败处理函数

                     {

                         //alert(e);

                     }

                  }

              )

     }

 

 

 执行时候页面是可以正常得到message数值和fenleilist数值。

---------------------------------------------------------------------------------------------------------------------------------

以下是无法取到值的情况：

Integer n ;

 

set .....

get ....

 

 

public String checkPersoncode()
 {
  String code = ServletActionContext.getRequest().getParameter("userPersoncode");
  System.out.println(code);
     n = userBiz.selectPersoncodeByCode(code);
  return SUCCESS;
 }

 

页面也是那样写的，但是弹出来的值始终未定义。

 

但是这样倒是可以的 如：

 

 

public String checkPersoncode()
 {
  ServletActionContext.getResponse().setCharacterEncoding("utf-8");
  String code = ServletActionContext.getRequest().getParameter("userPersoncode");
  System.out.println(code);
     Integer n = userBiz.selectPersoncodeByCode(code);
     System.out.println(n);
  try {
   ServletActionContext.getResponse().getWriter().print(n);
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  return NONE;
    
 }

 

 

 

不得其解释啊！！！！