猜数字游戏规则：
由Login类的execute方法随机生成一个0-99的数字， 用户进行猜测 。 在web页面实时反馈 数字“过大”，“过小”和“总计猜了多少次”等信息。
首先在welcome-file 中加入起始页面 success.jsp
这个页面用来接收第一次输入的数据：
<%@ page language="java" contentType="text/html; charset=GB18030"
pageEncoding="GB18030"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030">
<title>Insert title here</title>
</head>
<body>
请猜一个数字
<form action="guess/guess" method="post">
我猜<input type="text" name="number"></input>
<input type="submit" value="submit"/>
</form>
</body>
</html>public class Guess extends ActionSupport implements RequestAware{
private static Integer count=0;
private Integer number;
private java.util.Random r=new java.util.Random();
private static Integer theone;
private Map<String,Object>request;
public String execute() {
//System.out.println(number);
if(count==null)
count=0;
if(count==0)
{
request.put("result", "请您猜一个数字吧");
request.put("count", count);
theone=Math.abs(r.nextInt());
theone=theone%100;
System.out.println("这个数是"+theone);
}
if (number>theone){
count++;
request.put("result", "猜大了哟");
request.put("count", count);
}
if(number<theone){
count++;
request.put("result", "猜的太小了魂淡");
request.put("count", count);
}
if(number==theone){
count=0;
request.put("result", "猜对啦");
request.put("count", count);
}
System.out.println("本轮一共猜了"+count+"次");
return "success";
}
public Integer getNumber(){
return number;
}
public void setNumber(Integer number){
this.number=number;
}
@Override
public void setRequest(Map<String, Object> request) {
// TODO Auto-generated method stub
this.request=request;
}
}<%@ page language="java" contentType="text/html; charset=GB18030"
pageEncoding="GB18030"%>
<%@taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030">
<title>Insert title here</title>
</head>
<body>
<form action="guess/guess" method="post">
<%= request.getAttribute("result")%> <br />
您现在共猜了<%= request.getAttribute("count") %>次<br />
我猜<input type="text" name="number"></input>
<input type="submit" value="submit"/>
</form>
</body>
</html>
这是一个基本的struts2小程序，关于request进行通信的简单应用。
原文：http://blog.csdn.net/pandora_madara/article/details/20619339
