ajax实现异步注册验证（stru…

原文地址：ajax实现异步注册验证（struts2）作者：sypk//action类

import
java.io.PrintWriter;   

import
java.text.SimpleDateFormat;   

import
java.util.Date;   

import
javax.servlet.http.HttpServletRequest;   

import
javax.servlet.http.HttpServletResponse;   

import
org.apache.struts2.ServletActionContext;   

import
com.opensymphony.xwork2.ActionSupport;   

  

public class AjaxAction extends ActionSupport
{   

  
  

   public String
getServerTime(){   

      
try {   

          
SimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd
kk:mm:ss");   

          
//获取原始的PrintWriter对象,以便输出响应结果,而不用跳转到某个试图   

          
HttpServletResponse response =
ServletActionContext.getResponse();   

          
//设置字符集   

          
response.setCharacterEncoding("UTF-8");   

          
PrintWriter out =
response.getWriter();   

          
//直接输入响应的内容   

          
out.println(sd.format(new
Date()));   

          
  

          
out.flush();   

          
out.close();   

      
} catch (Exception e)
{   

          
// TODO: handle
exception   

          
e.printStackTrace();   

      
}   

      
return null;//不需要跳转某个视图
因为上面已经有了直接输出的响应结果   

  
}   

  
  

   public String
ajaxLogin(){