AJAX+Servlet实现的数据处理显示功能示例

本文实例讲述了AJAX+Servlet实现的数据处理显示功能。分享给大家供大家参考，具体如下：

实现功能：在输入框中输入字符，用AJAX传到后台Servlet处理后加上随机数，并返回到前台显示。

一、写前台jsp页面index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>


 
  
  
 
 
  
  
  
 

二、写后台Servlet加random随机数，关键代码如下：

public void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    request.setCharacterEncoding("utf-8"); //用utf-8转换获得传输过来的码
    response.setContentType("text/html");
    PrintWriter out = response.getWriter();
    String txt = request.getParameter("txt");
//   String tx = new String(txt.getBytes("iso-8859"),"utf-8");
    out.print("txt="+txt+Math.random());
    out.flush();
    out.close();
}

public void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    request.setCharacterEncoding("utf-8");
    response.setContentType("text/html;charset=UTF-8");
    PrintWriter out = response.getWriter();
    String username = request.getParameter("username");
//   String txt = new String(username.getBytes("ISO-8859-1"),"UTF-8");
    String txt = new String(username);
    out.print("txt="+txt+":"+Math.random());
    out.flush();
    out.close();
}

更多关于ajax相关内容感兴趣的读者可查看本站专题：《jquery中Ajax用法总结》、《Javascript中ajax操作技巧总结》、《PHP+ajax技巧与应用小结》及《asp.net ajax技巧总结专题》

希望本文所述对大家ajax程序设计有所帮助。