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Posted to dev@tomcat.apache.org by bu...@apache.org on 2002/02/27 00:26:57 UTC
DO NOT REPLY [Bug 6697] New: -
can't use simple javabean in jsp (as per book example*)
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=6697
can't use simple javabean in jsp (as per book example*)
Summary: can't use simple javabean in jsp (as per book example*)
Product: Tomcat 4
Version: 4.0.2 Final
Platform: PC
OS/Version: Windows NT/2K
Status: NEW
Severity: Normal
Priority: Other
Component: Jasper
AssignedTo: tomcat-dev@jakarta.apache.org
ReportedBy: BuckWoodson@hotmail.com
I thought this was a config issue or bug in 4.0.1 that would be fixed. I do
not having tried it in 4.0.2 in the num directories where an example works
fine. I tried as many legal permutations as I could think of.
Symptom: cannot create simple javabean and use in jsp:
<TomcatDIR>\webapps\examples\jsp\num\numguess.jsp using
<TomcatDIR>\webapps\examples\WEB-INF\classes\num\NumberGuessBean.class
works
<TomcatDIR>\webapps\examples\jsp\num\simplebean.jsp
<TomcatDIR>\webapps\examples\WEB-INF\classes\num\lineBean.class
fails
~
simplebean.jsp:
<%@ page language="java" import="num.lineBean" %>
<jsp:usebean id="bn" class="num.lineBean" scope="session"/>
<html>
<head>
<title>Using JavaBeans</title>
</head>
<body>
<%= bn.stars(20)%>
Welcome to my Web page
<%= bn.doubleLine(30)%>
</body>
</html>
~
lineBean.java:
package num;
import java.util.*;
import java.lang.*;
public class lineBean
{
public lineBean()
{
}
public String stars(int x)
{
String text = "<BR>";
for (int i = 0; i < x; i++)
text += "*";
return text + "<BR>";
}
public String doubleLine(int x)
{
String text = "<BR>";
for (int i = 0; i < x; i++)
text += "=";
return text + "<BR>";
}
}
~
error:
org.apache.jasper.JasperException: Unable to compile class for JSPNote:
sun.tools.javac.Main has been deprecated.
An error occurred at line: 12 in the jsp file: /jsp/num/simplebean.jsp
Generated servlet error:
C:\Tomcat4.0.2\work\localhost\examples\jsp\num\simplebean$jsp.java:59:
Undefined variable or class name: bn
out.print( bn.stars(20));
^
An error occurred at line: 16 in the jsp file: /jsp/num/simplebean.jsp
Generated servlet error:
C:\Tomcat4.0.2\work\localhost\examples\jsp\num\simplebean$jsp.java:66:
Undefined variable or class name: bn
out.print( bn.doubleLine(30));
^
2 errors, 1 warning
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:285)
at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:552)
at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary
(JspServlet.java:177)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service
(JspServlet.java:189)
at org.apache.jasper.servlet.JspServlet.serviceJspFile
(JspServlet.java:382)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:474)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke
(StandardWrapperValve.java:243)
at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContextValve.invoke
(StandardContextValve.java:190)
at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:566)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke
(AuthenticatorBase.java:475)
at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:564)
at org.apache.catalina.valves.CertificatesValve.invoke
(CertificatesValve.java:246)
at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContext.invoke
(StandardContext.java:2343)
at org.apache.catalina.core.StandardHostValve.invoke
(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:566)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke
(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:564)
at org.apache.catalina.valves.ErrorReportValve.invoke
(ErrorReportValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:564)
at org.apache.catalina.valves.AccessLogValve.invoke
(AccessLogValve.java:468)
at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardEngineValve.invoke
(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.connector.http.HttpProcessor.process
(HttpProcessor.java:1012)
at org.apache.catalina.connector.http.HttpProcessor.run
(HttpProcessor.java:1107)
at java.lang.Thread.run(Thread.java:536)
~
*page 122 JavaServer Pages ISBN: 0764535420
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