struts2_aciton向js传json值及前台jsp解析

此代码用于添加留言

后台action代码

public void lawyerreply(){

try{
response.setCharacterEncoding("UTF-8");
String message="";
java.util.Date date=new java.util.Date();
Integer ids=Integer.valueOf(request.getParameter("id"));
Integer addUserIdString=(Integer)request.getSession().getAttribute("userid");
String addmessage=request.getParameter("message");
if(addmessage==null||"".equals(addmessage.trim())){
message="留言内容不能为空";
this.response.getWriter().print(message);
return ;
}
Timestamp time=new Timestamp(date.getTime());
model.setAddTime(time);
model.setRepBody(addmessage);
model.setLawyeId(ids);
model.setAddUser(addUserIdString);
model.setId(null);
lawyeReplyservice.lawyereplyAdd(model);
count=lawyeReplyservice.count("lawyeId="+ids.intValue());
message="添加留言成功！";
String data="{message:\""+message+"\", count:\""+count+"\"}"; 

// this.id = String.valueOf(ids);
this.response.getWriter().print(data);
}catch (Exception e) {
e.printStackTrace();
}
}

前台解析json代码

 function addMessage(userId){

 var addmessage=$("#repBody").val();

 //alert(message);加判断

 $.ajax({

   type: "POST",

   url: "lawyerreply.action",

   data: "id="+userId+"&message="+addmessage,

   success: function(msg){

   //对msg解析 得到count 和message

   var date=eval("("+msg+")");

   //1修改count数 ，取得count数，设置页面上的值

   $("#countPersonNum").html(date.count);

   //2 提示后台返回信息 message

     alert( "温馨提示: " + date.message );

     $("#repBody").html("");

   }

});

 }