ajax提交到java后台实现处理数据

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>      
    
    

 index.jsp 

package com.action; import java.io.PrintWriter; import java.util.Map; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionContext; import com.opensymphony.xwork2.ActionSupport; public class Test extends ActionSupport { @Override public String execute() throws Exception { // TODO Auto-generated method stub HttpServletRequest request = org.apache.struts2.ServletActionContext.getRequest(); HttpServletResponse response = ServletActionContext.getResponse(); request.setCharacterEncoding("utf-8"); response.setCharacterEncoding("utf-8"); PrintWriter out = response.getWriter(); out.write(request.getParameter("username")); out.flush(); out.close(); return SUCCESS; } }