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accessing jsp beans, (error: not found)

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  #1  
Old May 5th, 2003, 06:30 PM
speterson speterson is offline
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accessing jsp beans, (error: not found)
I have a jsp page at: /usr/java/jakarta-tomcat-4.1.24/webapps/ROOT/calc.jsp

jsp:useBean id="theBean" class="gov.usda.calc"/>
<html>
<head>
<title>testing calcbean</title>
</head>
<body>
<%
int i = 4;
int j = theBean.doubleIt(i);
out.print(j);
%>
</body>
</html>

I have a bean (successfully compiled calc.java for it at:
/usr/java/jakarta-tomcat-4.1.24/webapps/ROOT/WEB-INF/gov/usda
/calc.class


package gov.usda;
public class calc
{
public int doublIt(int number)
{
return 2 * number;
}
}


when I try to access my .jsp i get a "package gov.usda does not exist" error.

The full error is:

org.apache.jasper.JasperException: Unable to compile class for JSP

An error occurred at line: 0 in the jsp file: /calc.jsp

Generated servlet error:
[javac] Since fork is true, ignoring compiler setting.
[javac] Compiling 1 source file
[javac] Since fork is true, ignoring compiler setting.
[javac] /usr/java/jakarta-tomcat-4.1.24/work/Standalone/localhost/_/calc_jsp.java:41: package gov.usda does not exist
[javac] gov.usda.calc theBean = null;
[javac] ^



An error occurred at line: 0 in the jsp file: /calc.jsp

Generated servlet error:
[javac] /usr/java/jakarta-tomcat-4.1.24/work/Standalone/localhost/_/calc_jsp.java:43: package gov.usda does not exist
[javac] theBean = (gov.usda.calc) pageContext.getAttribute("theBean", PageContext.PAGE_SCOPE);
[javac] ^



An error occurred at line: 0 in the jsp file: /calc.jsp

Generated servlet error:
[javac] /usr/java/jakarta-tomcat-4.1.24/work/Standalone/localhost/_/calc_jsp.java:46: package gov.usda does not exist
[javac] theBean = (gov.usda.calc) java.beans.Beans.instantiate(this.getClass().getClassLoader(), "gov.usda.calc");
[javac] ^
[javac] 3 errors



at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:130)
at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:293)
at org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:353)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:370)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:473)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:190)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
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:256)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.j ava:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.j ava:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.j ava:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.j ava:641)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.j ava:641)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.j ava:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:594)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.jav a:392)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
at java.lang.Thread.run(Thread.java:536)


---------------------------------------------------
I've tried restarting tomcat.

Any ideas? I'm really flowndering here...

Thanks,

Scott Peterson
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  #2  
Old May 5th, 2003, 06:33 PM
Nemi Nemi is offline
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Classes must be in the WEB-INF/classes folder
Code:
/usr/java/jakarta-tomcat-4.1.24/webapps/ROOT/WEB-INF/classes/gov/usda/calc.class


Try this
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  #3  
Old May 5th, 2003, 06:49 PM
speterson speterson is offline
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That did it!

Thanks!
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