2 Replies Latest reply on Apr 25, 2013 3:50 AM by hongweichen

How to get the bundlecontext in servlet which is in webapp

hongweichen Apr 24, 2013 5:11 AM

Hi all,

I want to get the bundlecontext in servlet which is in webapp,

my code is:

public class HelloWorldServlet extends HttpServlet {

private static final long serialVersionUID = 5423372534281029927L;

private TimeService service;

protected void doGet(HttpServletRequest req, HttpServletResponse resp)

throws ServletException, IOException {

Bundle bundle = ((BundleReference) TimeService.class.getClassLoader()).getBundle();

String message = service.getTime();

PrintWriter out = resp.getWriter();

out.println(message);

out.close();

}

but i catch the exception:

16:51:33,223 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/Spring].[test]] (http--192.168.6.80-8080-1) Servlet.service() for servlet test threw exception: java.lang.ClassCastException: org.jboss.modules.ModuleClassLoader cannot be cast to org.osgi.framework.BundleReference

at com.fsj.spring.web.HelloWorldServlet.doGet(HelloWorldServlet.java:30) [classes:]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:734) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.13.Final.jar:]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]

at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) [org.springframework.web-3.0.5.RELEASE.jar:3.0.5.RELEASE]

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) [org.springframework.web-3.0.5.RELEASE.jar:3.0.5.RELEASE]

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280) [jbossweb-7.0.13.Final.jar:]

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.13.Final.jar:]

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.13.Final.jar:]

at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.13.Final.jar:]

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.13.Final.jar:]

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.13.Final.jar:]

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.13.Final.jar:]

at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.13.Final.jar:]

at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.13.Final.jar:]

at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.13.Final.jar:]

at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_35]

TimeService is the interface of a bundle, and the webapp is the non-bundle app, my jboss is jboss-as-7.1.1.Final.

is anybody can help me to workout this problem?

Thanks

1. Re: How to get the bundlecontext in servlet which is in webapp

thomas.diesler Apr 25, 2013 2:42 AM (in response to hongweichen)

This would be the case if TimeService was not part of or wired to a bundle deployment
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2. Re: How to get the bundlecontext in servlet which is in webapp

hongweichen Apr 25, 2013 3:50 AM (in response to thomas.diesler)

Hi Thomas,
    The above problem has fixed, after add the <module name="org.jboss.osgi.framework" export="true" /> in module dependencies.
    But i catch the another exception:
          java.lang.ClassCastException: com.example.time.local.service.LocalTimeService cannot be cast to com.example.time.service.TimeService
    My code:

public class HelloWorldServlet extends HttpServlet {

          private static final long serialVersionUID = 5423372534281029927L;

          @Resource(name="BundleContext")
    private BundleContext context;

          @SuppressWarnings({ "rawtypes", "unchecked" })
          protected void doGet(HttpServletRequest req, HttpServletResponse resp)
                              throws ServletException, IOException {
                    ServiceReference helloServiceReference = context.getServiceReference(TimeService.class.getName());
                    TimeService service = (TimeService)context.getService(helloServiceReference);

                    String message = service.getTime();
        PrintWriter out = resp.getWriter();
        out.println(message);
        out.close();
          }
}

Note: The LocalTimeService is implements TimeService.

    I think this maybe because of the classloader is different, I have tried add the <module name="org.jboss.osgi.framework" export="true" /> in module.xml and add the <module name="org.jboss.osgi.framework" export="true" /> in jboss-deployment-structure.xml, these two methods dont solve this issue.

    Can u help me to work out this problem,

     Thanks.
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