练习--JSP简易网页计数器

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简易网页计数器

appli.jsp

<%@ page language="java" contentType="text/html; charset=GBK"    pageEncoding="GBK"%><!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=ISO-8859-1"><title>Insert title here</title></head><body><h4>网页计数器</h4><%  out.print("设置初值");  Integer intcount;  if(application.getAttribute("count")==null){  intcount=1;  }else{  intcount=(Integer.parseInt(application.getAttribute("count").toString()));  }  application.setAttribute("name", "zoe");  application.setAttribute("count", intcount);  out.print("set name=zoe");  out.print("<br>set count="+intcount+"<br>");%><a href="show.jsp">显示页面</a></body></html>

show.jsp

<%@ page language="java" contentType="text/html; charset=GBK"    pageEncoding="GBK"%><!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=ISO-8859-1"><title>Insert title here</title></head><body><br>获取用户名：<%=application.getAttribute("name") %><br>计数器:<%   int mycount=Integer.valueOf(application.getAttribute("count").toString()).intValue();//获取保存在application对象中的值   out.print(mycount);   application.setAttribute("count",Integer.toString(mycount+1));%></body></html>

运行结果：

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