📄 server.jsp
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<%@ page language="java" contentType="text/html; charset=gb2312"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><title></title></head><body>
<%
response.setContentType("text/xml");
response.setHeader("Cache-Control", "no-cache");
final String[] str = new String[] {"1", "2", "3","4","5","6","7","8","9","0"};
//从三个字符串中随机挑选一个写入到response中，返回客户端。
int number = new java.util.Random().nextInt(10);
response.getWriter().write(str[number]);
%>
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