JDNI error with Generic JavaBean Resources

[Zhang, Yufei (Factiva)]

Hi,

I got error when I try to set up a generic bean resource as described in
http://jakarta.apache.org/tomcat/tomcat-4.1-doc/jndi-resources-howto.html.

My bean class is:
public class TestBean implements Bean {
    private String message = "Default message";
    
    /** Creates new TestBean */
    public TestBean() {
    }

    public void setMessage(String message) {
        this.message = message;
    }
    
    public String getMessage() {
        return message;
    }
}

I declare my resource in web.xml as:
 <resource-env-ref>
  <description>Test object factory for my TestBean instances.</description>
  <resource-env-ref-name>bean/TestBeanFactory</resource-env-ref-name>
  <resource-env-ref-type>com.test.bean.TestBean</resource-env-ref-type>
 </resource-env-ref>

and in server.xml as:
        <Context ...>
          <Resource name="bean/TestBeanFactory" auth="Container"
type="com.test.bean.TestBean"/>
          <ResourcesParams name="bean/TestBeanFactory">
            <parameter>
              <name>factory</name>
              <value>org.apache.naming.factory.BeanFactory</value>
            </parameter>
            <parameter>
              <name>message</name>
              <value>Initial message</value>
            </parameter>
          </ResourcesParams>
        </Context>

and in my servelet I try this:
        Context initCtx = new InitialContext();
        Context envCtx = (Context)initCtx.lookup("java:comp/env");
            bean = (Bean)envCtx.lookup("bean/TestBeanFactory");

then I got the error:

javax.naming.NamingException: Cannot create resource instance
        at
org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.
java:189)
        at
javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:301)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:834)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:181)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:822)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:194)
        at com.yufei.servlet.JNDITest.doGet(JNDITest.java:42)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:247)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:193)
        at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:260)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:191)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
        at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase
.java:527)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2396)
        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
        at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
java:170)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172
)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java: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$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
        at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:405)
        at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConne
ction(Http11Protocol.java:380)
        at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:508)
        at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav
a:533)
        at java.lang.Thread.run(Thread.java:536)

I just follow every step in the how-to document, anybody can explain why I
got this error? Am I missing something here?

Thanks
Yufei

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