Root resource - Klassen werden nicht gefunden.

[pkm]

Ich bin gerade dabei eine REST-Schnittstelle zu programmieren, diese habe ich als dynamisches Webprojekt angelegt gemäß http://www.se.uni-hannover.de/pages/de:tutorials_restful_guestbook

Das Problem dabei ist, dass es mit dem Deployment nicht klappt. Wenn ich die URL http://localhost:8080/RESTfulGuestBookService/ aufrufe, dann kommt eine Fehlermeldung:

com.sun.jersey.api.container.ContainerException: The ResourceConfig instance does not contain any root resource classes.

        com.sun.jersey.server.impl.application.RootResourceUriRules.<init>(RootResourceUriRules.java:99)

        com.sun.jersey.server.impl.application.WebApplicationImpl._initiate(WebApplicationImpl.java:1298)

        com.sun.jersey.server.impl.application.WebApplicationImpl.access$700(WebApplicationImpl.java:169)

        com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:775)

        com.sun.jersey.server.impl.application.WebApplicationImpl$13.f(WebApplicationImpl.java:771)

        com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:193)

        com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:771)

        com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:766)

        com.sun.jersey.spi.container.servlet.ServletContainer.initiate(ServletContainer.java:488)

        com.sun.jersey.spi.container.servlet.ServletContainer$InternalWebComponent.initiate(ServletContainer.java:318)

        com.sun.jersey.spi.container.servlet.WebComponent.load(WebComponent.java:609)

        com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:210)

        com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:373)

        com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:556)

        javax.servlet.GenericServlet.init(GenericServlet.java:158)

        org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:528)

        org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)

        org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678)

        org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)

        org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:798)

        org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)

        org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:810)

        org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)

        org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)

        java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)

        java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)

        org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

        java.base/java.lang.Thread.run(Thread.java:835)

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://xmlns.jcp.org/xml/ns/javaee"
    xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"

    id="WebApp_ID" version="3.1">

    <display-name>RESTfulGuestBookService</display-name>

    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>

    <servlet>
        <servlet-name>RESTful Guest Book with Jersey</servlet-name>
        <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>

        <init-param>
            <param-name>com.sun.jersey.config.feature.Redirect</param-name>
            <param-value>true</param-value>
        </init-param>

        <init-param>
            <param-name>jersey.config.server.provider.packages</param-name>
            <param-value>de.unihannover.se.soa11.guestbook.rest</param-value>
        </init-param>

    </servlet>

    <servlet-mapping>
        <servlet-name>RESTful Guest Book with Jersey</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>

</web-app>

Hat jemand eventuell eine Idee, wi ich die web.xml richtig konfigurieren soll? Ich habe es auch mit com.sun.jersey.config.property.packages

als param-name versucht, was leider auchnicht geklappt hat.

 

[kay73]

The ResourceConfig instance does not contain any root resource classes

What's going wrong here? The ResourceConfig instance does not contain any root resource classes. Dec 10, 2010 10:21:24 AM com.sun.jersey.spi.spring.container.servlet.SpringServlet initiate SEVERE:

stackoverflow.com

hier mal alles durchprobiert/ausgeschlossen?

 

[pkm]

Danke für den Tipp - der Stackoverflowartikel brachte zwar nichts, aber als ich mich penibel an dieses Tutorium gehalten habe:

Die Anleitung zum Java RESTful Web Services für den Anfänger | codestory.de

o7planning.org

Hat es wunderbar funktioniert.