HI, FYI:
IllegalAccessExceptions generally mean you're improperly using
public/private/protected/package
private, etc., modifiers in your code. (Generally, that is...could
be something else).
It looks like your default constructor is marked as package private,
change it to public and see what happens.
My other question which I think you already answered was whether
you packed your jars correctly, but it looks like you did.
Does this help?
fillup
At Friday, 26 April 2002, you wrote:
>Hi,
>
>I made a test javabean (HelloBean) which is part of package called
>
> br.eti.macaiba.test.bean
>
>When I put the directory structure of the package in
>
> $CATALINA_HOME/webapps/ROOT/WEB-INF/classes/
>
>there is no problem.
>
>But when I try to put the jar file in
>
> $CATALINA_HOME/webapps/ROOT/WEB-INF/lib/
>
>I receive the error message below:
>
> Apache Tomcat/4.0.3 - HTTP Status 500 - Internal Server Error
>
>Does anyone have any idea ?
>
>Thanks In Advance,
>Joao Macaiba.
>
>PS: Below are the files and full error message:
>
>--- BEGIN : HelloBean.java ---
>
>package br.eti.macaiba.test.bean;
>
>public class HelloBean implements java.io.Serializable {
>
> private String name;
>
> HelloBean() {
> name = "World";
> }
>
> public String getName() {
>
> return name;
> }
>
> public void setName(String n) {
>
> name = n;
> }
>
>}
>
>--- END : HelloBean.java ---
>
>--- BEGIN : HelloBean.jsp ---
>
><html>
><head><title>This is the HelloBean example</title></head>
><body>
><jsp:useBean id="hello" class="br.eti.macaiba.test.bean.HelloBean"/>
><jsp:setProperty name="hello" property="name" param="name"/>
>Hello, <jsp:getProperty name="hello" property="name"/> !
></body>
></html>
>
>--- END : HelloBean.jsp ---
>
>--- BEGIN : jar -xvf macaiba.jar ---
>
> created: META-INF/
>extracted: META-INF/MANIFEST.MF
> created: br/
> created: br/eti/
> created: br/eti/macaiba/
> created: br/eti/macaiba/test/
> created: br/eti/macaiba/test/bean/
>extracted: br/eti/macaiba/test/bean/HelloBean.class
>
>--- END : jar -xvf macaiba.jar ---
>
>--- BEGIN : dump of tomcat error message ---
>
>Apache Tomcat/4.0.3 - HTTP Status 500 - Internal Server Error
>
>type Exception report
>
>message Internal Server Error
>
>description The server encountered an internal error (Internal Server
>Error) that prevented it from fulfilling this request.
>
>exception
>javax.servlet.ServletException: class br.eti.macaiba.test.bean.HelloBean
:
>java.lang.IllegalAccessException: Class java.beans.Beans can not
access a
>member of class br.eti.macaiba.test.bean.HelloBean with modifiers ""
> at
>org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.
>java:463)
> at
>org.apache.jsp.HelloBean$jsp._jspService(HelloBean$jsp.java:104)
> at
>org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
>org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.
>java:202)
> 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.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)
>
>root cause
>java.lang.InstantiationException: class br.eti.macaiba.test.bean.
HelloBean
>: java.lang.IllegalAccessException: Class java.beans.Beans can not
access
>a member of class br.eti.macaiba.test.bean.HelloBean with modifiers ""
> at org.apache.jsp.HelloBean$jsp._jspService(HelloBean$jsp.
java:70)
> at
>org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
>org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.
>java:202)
> 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.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)
>
>--- END : dump of tomcat error message ---
>
>--
>>From "The Practice Programming" by Brian W Kernighan & Rob Pike:
>
> Another effective [debugging] technique is to explain your code to
>someone else. This will often cause you to explain the bug to yourself.
>Sometimes it takes no more than a few sentences, followed by an
>embarrassed "Never mind. I see what's wrong. Sorry to bother you."
>
> This works remarkbly well; you can even use non-programmers as
>listeners. One university computer center kept a teddy bear near
the help
>desk. Students with mysterious bugs were required to explain them
to the
>bear before they could speak to a human counselor.
>
>*----------------------------------------------------------------*
>| .''`. | Debian GNU/Linux: <http://www.debian.org> |
>| : :' : | Debian BR.......: <http://debian-br.sourceforge.net> |
>| `. `'` | |
>| `- | Be Happy! Be FREE! |
>*----------------------------------------------------------------*
>
>----------------------------------------------------------------------
>Jo�o Maca�ba Servi�o de Suporte a Informa��es
>+55 21 2274.7445 Rede Nacional de Ensino e Pesquisa
> http://www.rnp.br
>----------------------------------------------------------------------
>
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>
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