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关于application对象的有关问题

热度:41   发布时间:2016-04-17 14:05:25.0
关于application对象的问题
第1个文件test_application.jsp
<%@page   contentType= "text/html;charset=gb2312 "   import= "java.sql.* "%>
<html>
<head>
<title> use   counter </title>
</head>
<body>
ceshi   application   yemian <br>
<jsp:include   page= "application.jsp ">
<jsp:param   name= "counter_name "   value= "test_application "/>
</jsp:include>
</html>
第2个文件application.jsp
<%@page   contectType= "text/html;charset=gb2312 "%>
<%
int   count=0;
String   counter_name=request.getParameter( "counter_name ");
try
{
count=Integer.parseInt((application.getAttribute(counter_name).toString()));
}
catch(Exception   e)
{
}
out.println( "yi   fangwen "   +count+ "ci ");
count++;
application.setAttribute(counter_name,new   Integer(count));
%>
报错:
type   Exception   report

message  

description   The   server   encountered   an   internal   error   ()   that   prevented   it   from   fulfilling   this   request.

exception  

org.apache.jasper.JasperException:   Exception   in   JSP:   /test_application.jsp:8

5:   </head>
6:   <body>
7:   ceshi   application   yemian <br>
8:   <jsp:include   page= "/application.jsp ">
9:   <jsp:param   name= "counter_name "   value= "test_application "/>
10:   </jsp:include>
11:   </html>


Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:506)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


root   cause  

org.apache.jasper.JasperException:   Unable   to   load   class   for   JSP
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:512)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
org.apache.jsp.test_005fapplication_jsp._jspService(test_005fapplication_jsp.java:50)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


root   cause  

org.apache.jasper.JasperException:   Unable   to   load   class   for   JSP
org.apache.jasper.JspCompilationContext.load(JspCompilationContext.java:598)
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:147)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
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