AJAX+Servlet实现的数据处理显示功能示例

admin2022-07-26  9

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"%>


 
  My JSP 'index.jsp' starting page
  
 
 
  
  
  
 


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();
}
/**
* The doPost method of the servlet. 
* * This method is called when a form has its tag value method equals to post. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */ 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。

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