- Java code
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%@ include file="checkLogin.jsp" %><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <base href="<%=basePath%>"> <title>成功登陆</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <script language="JavaScript"> function stop() { <% session.setAttribute("formAction", "stop"); %> form.action = "agentsTracker"; form.submit(); } function start() { <% session.setAttribute("formAction", "start"); %> form.action = "agentsTracker"; form.submit(); } function tmp() { <% session.setAttribute("formAction", "tmp"); %> } </script> <body> <h1>欢迎您</h1> ${sessionScope.name} <form name="form" id="form" method="post" action="agentsTracker"> <input type="button" name="startBtn" onClick="start()" value="start"> <input type="button" name="stopBtn" onClick="stop()" value="stop"> <input type="submit" name="submit" value="ok"> </form> </body></html>
不管点击哪个按钮,servlet接收到的session.getAttribute("formAction")都是"tmp",刚接触jsp,不知道是哪出错了
------解决方案--------------------------------------------------------
jsp在服务器上就执行了,javascript是在客户端的浏览器里执行的
你明我意思吧!
------解决方案--------------------------------------------------------
function stop()
{
<% session.setAttribute("formAction", "stop"); %>
form.action = "agentsTracker";
form.submit();
}
红色的代码是服务端执行的,也就是你这个页面加载的时候就已经执行了,楼主可以访问一下这个JSP之后,在浏览器中看一下页面源代码,应该是看不到session.setAtt……的,因为它是服务端执行的东西,其他几个function中也是一样的,所以最后的session.setAttribute("formAction", "tmp");就覆盖了以前设置的formAction。不知道我有没有说明白。总之楼主需要明白什么代码是客户端执行的,什么代码是客户端执行的就OK了。