Hi All,
I have been following this tutorial on creating a carbon component [1]. I
have created all 3 OSGI bundles and added them to the "dropins" folder.
Once I start the carbon server, I see the component I created as
"student.menu". But when clicked on it, nothing happens. In the carbon
console I see the following error. I have also attached a copy of the tree
structure of the "org.wso2.carbon.student.mgt.ui" project and also the
content of the "org.wso2.carbon.student.mgt.ui" jar file.
------------------------ The error -------------------------
[2014-10-09 11:21:37,920] ERROR
{org.apache.catalina.core.ApplicationDispatcher} - Servlet.service() for
servlet bridgeservlet threw exception
java.lang.ClassNotFoundException: org.wso2.carbon.student.mgt.GetStudents
at
org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:455)
at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at
org.wso2.carbon.student.mgt.stub.StudentManagerStub.toEnvelope(StudentManagerStub.java:461)
at
org.wso2.carbon.student.mgt.stub.StudentManagerStub.getStudents(StudentManagerStub.java:169)
at
org.wso2.carbon.student.mgt.ui.StudentManagerClient.getStudents(StudentManagerClient.java:24)
at
org.apache.jsp.student_002dmgt.index_jsp._jspService(org.apache.jsp.student_002dmgt.index_jsp:77)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:403)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:492)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:378)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at org.wso2.carbon.ui.JspServlet.service(JspServlet.java:155)
at org.wso2.carbon.ui.TilesJspServlet.service(TilesJspServlet.java:80)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at
org.eclipse.equinox.http.helper.ContextPathServletAdaptor.service(ContextPathServletAdaptor.java:37)
at
org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)
at
org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:128)
at
org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:68)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at
org.wso2.carbon.tomcat.ext.servlet.DelegationServlet.service(DelegationServlet.java:68)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
at
org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:605)
at
org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:544)
at
org.eclipse.equinox.http.servlet.internal.RequestDispatcherAdaptor.include(RequestDispatcherAdaptor.java:37)
at
org.eclipse.equinox.http.helper.ContextPathServletAdaptor$RequestDispatcherAdaptor.include(ContextPathServletAdaptor.java:369)
at
org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:1015)
at
org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:700)
at sun.reflect.GeneratedMethodAccessor37.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.tiles.jsp.context.JspUtil.doInclude(JspUtil.java:87)
at
org.apache.tiles.jsp.context.JspTilesRequestContext.include(JspTilesRequestContext.java:88)
at
org.apache.tiles.jsp.context.JspTilesRequestContext.dispatch(JspTilesRequestContext.java:82)
at
org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:465)
at
org.apache.tiles.jsp.taglib.InsertAttributeTag.render(InsertAttributeTag.java:140)
at
org.apache.tiles.jsp.taglib.InsertAttributeTag.render(InsertAttributeTag.java:117)
at
org.apache.tiles.jsp.taglib.RenderTagSupport.execute(RenderTagSupport.java:171)
at
org.apache.tiles.jsp.taglib.RoleSecurityTagSupport.doEndTag(RoleSecurityTagSupport.java:75)
at
org.apache.tiles.jsp.taglib.ContainerTagSupport.doEndTag(ContainerTagSupport.java:80)
at
org.apache.jsp.admin.layout.template_jsp._jspx_meth_tiles_insertAttribute_7(org.apache.jsp.admin.layout.template_jsp:603)
at
org.apache.jsp.admin.layout.template_jsp._jspService(org.apache.jsp.admin.layout.template_jsp:335)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:403)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:492)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:378)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at org.wso2.carbon.ui.JspServlet.service(JspServlet.java:155)
at org.wso2.carbon.ui.TilesJspServlet.service(TilesJspServlet.java:80)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at
org.eclipse.equinox.http.helper.ContextPathServletAdaptor.service(ContextPathServletAdaptor.java:37)
at
org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)
at
org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:128)
at
org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:68)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at
org.wso2.carbon.tomcat.ext.servlet.DelegationServlet.service(DelegationServlet.java:68)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
at
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487)
at
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412)
at
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339)
at
org.eclipse.equinox.http.servlet.internal.RequestDispatcherAdaptor.forward(RequestDispatcherAdaptor.java:30)
at
org.eclipse.equinox.http.helper.ContextPathServletAdaptor$RequestDispatcherAdaptor.forward(ContextPathServletAdaptor.java:362)
at
org.apache.tiles.servlet.context.ServletTilesRequestContext.forward(ServletTilesRequestContext.java:198)
at
org.apache.tiles.servlet.context.ServletTilesRequestContext.dispatch(ServletTilesRequestContext.java:185)
at
org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:419)
at
org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:370)
at org.wso2.carbon.ui.action.ActionHelper.render(ActionHelper.java:52)
at org.wso2.carbon.ui.TilesJspServlet.service(TilesJspServlet.java:101)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at
org.eclipse.equinox.http.helper.ContextPathServletAdaptor.service(ContextPathServletAdaptor.java:37)
at
org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)
at
org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:128)
at
org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:68)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at
org.wso2.carbon.tomcat.ext.servlet.DelegationServlet.service(DelegationServlet.java:68)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
org.wso2.carbon.tomcat.ext.filter.CharacterSetFilter.doFilter(CharacterSetFilter.java:61)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at
org.wso2.carbon.tomcat.ext.valves.CompositeValve.continueInvocation(CompositeValve.java:178)
at
org.wso2.carbon.tomcat.ext.valves.TomcatValveContainer.invokeValves(TomcatValveContainer.java:49)
at
org.wso2.carbon.tomcat.ext.valves.CompositeValve.invoke(CompositeValve.java:141)
at
org.wso2.carbon.tomcat.ext.valves.CarbonStuckThreadDetectionValve.invoke(CarbonStuckThreadDetectionValve.java:156)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
at
org.wso2.carbon.tomcat.ext.valves.CarbonContextCreatorValve.invoke(CarbonContextCreatorValve.java:52)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1653)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
------------------- The Error -----------------------
[1] -
http://wso2.com/library/tutorials/2014/03/how-to-write-a-wso2-carbon-component/
Thanks.
Hemika Kodikara
Software Engineer
WSO2 Inc.
lean . enterprise . middleware
http://wso2.com
Mobile : +94777688882
Hemikas-MacBook-Pro:dropins hemikakodikara$ jar tf
org.wso2.carbon.student.mgt.ui-0.0.1-SNAPSHOT.jar
META-INF/MANIFEST.MF
META-INF/
META-INF/component.xml
META-INF/maven/
META-INF/maven/org.wso2.carbon/
META-INF/maven/org.wso2.carbon/org.wso2.carbon.student.mgt.ui/
META-INF/maven/org.wso2.carbon/org.wso2.carbon.student.mgt.ui/pom.properties
META-INF/maven/org.wso2.carbon/org.wso2.carbon.student.mgt.ui/pom.xml
org/
org/wso2/
org/wso2/carbon/
org/wso2/carbon/student/
org/wso2/carbon/student/mgt/
org/wso2/carbon/student/mgt/GetStudents$Factory.class
org/wso2/carbon/student/mgt/GetStudents.class
org/wso2/carbon/student/mgt/GetStudentsResponse$Factory.class
org/wso2/carbon/student/mgt/GetStudentsResponse.class
org/wso2/carbon/student/mgt/data/
org/wso2/carbon/student/mgt/data/xsd/
org/wso2/carbon/student/mgt/data/xsd/ExtensionMapper.class
org/wso2/carbon/student/mgt/data/xsd/Student$Factory.class
org/wso2/carbon/student/mgt/data/xsd/Student.class
org/wso2/carbon/student/mgt/stub/
org/wso2/carbon/student/mgt/stub/StudentManager.class
org/wso2/carbon/student/mgt/stub/StudentManagerCallbackHandler.class
org/wso2/carbon/student/mgt/stub/StudentManagerStub$1.class
org/wso2/carbon/student/mgt/stub/StudentManagerStub.class
org/wso2/carbon/student/mgt/ui/
org/wso2/carbon/student/mgt/ui/StudentManagerClient.class
org/wso2/carbon/student/mgt/ui/i18n/
org/wso2/carbon/student/mgt/ui/i18n/Resources.properties
web/
web/student-mgt/
web/student-mgt/images/
web/student-mgt/images/students.gif
web/student-mgt/index.jsp
.
├── pom.xml
├── src
│ ├── main
│ │ ├── java
│ │ │ └── org
│ │ │ └── wso2
│ │ │ └── carbon
│ │ │ └── student
│ │ │ └── mgt
│ │ │ └── ui
│ │ │ └── StudentManagerClient.java
│ │ └── resources
│ │ ├── META-INF
│ │ │ └── component.xml
│ │ ├── org
│ │ │ └── wso2
│ │ │ └── carbon
│ │ │ └── student
│ │ │ └── mgt
│ │ │ └── ui
│ │ │ └── i18n
│ │ │ └── Resources.properties
│ │ └── web
│ │ └── student-mgt
│ │ ├── images
│ │ │ └── students.gif
│ │ └── index.jsp
│ └── test
│ ├── java
│ └── resources
└── target
├── classes
│ ├── META-INF
│ │ ├── MANIFEST.MF
│ │ └── component.xml
│ ├── org
│ │ └── wso2
│ │ └── carbon
│ │ └── student
│ │ └── mgt
│ │ └── ui
│ │ ├── StudentManagerClient.class
│ │ └── i18n
│ │ └── Resources.properties
│ └── web
│ └── student-mgt
│ ├── images
│ │ └── students.gif
│ └── index.jsp
├── maven-status
│ └── maven-compiler-plugin
│ ├── compile
│ │ └── default-compile
│ │ ├── createdFiles.lst
│ │ └── inputFiles.lst
│ └── testCompile
│ └── default-testCompile
│ └── inputFiles.lst
├── org.wso2.carbon.student.mgt.ui-0.0.1-SNAPSHOT.jar
└── test-classes
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