1 2 Previous Next 20 Replies Latest reply on Jul 21, 2011 3:37 AM by Alessio Soldano

    Problem migrating RESTful service from AS6 to AS7

    abhi0123 Newbie

      Hi,

      I have a RESTful service running perfectly fine in JBoss AS 6.0.0.Final. It is configured as a Servlet in the web.xml because without the configuration, the server rresponds with 404 to client requests.

      With JBoss AS 7, I am having the following problems. I read the "How do I migrate my application from AS5 or AS6 to AS7" but didn't find a solution to my problem. Am I missing something?

       

      1. ClassCastException

       

      00:29:32,684 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/movieservicerestful].[MovieServiceRestful]] (http--127.0.0.1-9090-2) Allocate exception for servlet MovieServiceRestful: java.lang.ClassCastException: name.app.abhi.movieservice.restful.service.impl.MovieServiceRestful cannot be cast to javax.servlet.Servlet

          at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1156) [jbossweb-7.0.0.CR4.jar:7.0.0.Final]

          at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:952) [jbossweb-7.0.0.CR4.jar:7.0.0.Final]

          at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:188) [jbossweb-7.0.0.CR4.jar:7.0.0.Final]

          at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.0.CR4.jar:7.0.0.Final]

          at org.jboss.as.web.NamingValve.invoke(NamingValve.java:57) [jboss-as-web-7.0.0.Final.jar:7.0.0.Final]

       

      2. 404 if I remove the Servlet definition from the web.xml.

       

      3. A warning on @Resource injection

       

      @Resource

      protected WebServiceContext wsCtx;

       

      WARN  [org.jboss.as.ee.component.ResourceInjectionAnnotationParsingProcessor] (MSC service thread 1-1) Can't handle @Resource for ENC name: name.app.abhi.movieservice.restful.service.impl.MovieServiceRestful/wsCtx on class name.app.abhi.movieservice.restful.service.impl.MovieServiceRestful since it's missing a "lookup" (or "mappedName") value and isn't of any known type

        • 1. Re: Problem migrating RESTful service from AS6 to AS7
          abhi0123 Newbie

          44 views and no response? Is this too complex or too rudimentary to bother?

          • 2. Re: Problem migrating RESTful service from AS6 to AS7
            Stuart Douglas Master

            Are you running the server in preview mode?

             

            ./standalone.sh --server-config=standalone-preview.xml

            • 3. Re: Problem migrating RESTful service from AS6 to AS7
              abhi0123 Newbie

              ./standalone.sh --server-config=standalone-preview.xml

               

              {code}

              21:01:09,038 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/movieservicerestful]] (MSC service thread 1-3) Exception sending context initialized event to listener instance of class org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap: java.lang.NoClassDefFoundError: javax/servlet/ServletContext

              at org.scannotation.WarUrlFinder.findWebInfClassesPath(WarUrlFinder.java:56) [scannotation-1.0.2.jar:]

              at org.jboss.resteasy.plugins.server.servlet.ListenerBootstrap.getScanningUrls(ListenerBootstrap.java:64) [resteasy-jaxrs-2.2.1.GA.jar:]

               

              21:01:09,044 ERROR [org.apache.catalina.core.StandardContext] (MSC service thread 1-3) Error listenerStart

              21:01:09,045 ERROR [org.apache.catalina.core.StandardContext] (MSC service thread 1-3) Context [/movieservicerestful] startup failed due to previous errors

              21:01:09,045 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/movieservicerestful]] (MSC service thread 1-3) Exception sending context destroyed event to listener instance of class org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap: java.lang.NullPointerException

              at org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap.contextDestroyed(ResteasyBootstrap.java:37) [resteasy-jaxrs-2.2.1.GA.jar:]

              {code}

               

               

              {code:xml}

              <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-war-plugin</artifactId>

                <version>2.1.1</version>

                <configuration>

                  <archive>

                    <manifestEntries>

                      <Dependencies>org.jboss.resteasy.resteasy-jaxrs export service,javax.servlet.api export service,org.scannotation.scannotation export service</Dependencies>

                    </manifestEntries>

                  </archive>

                </configuration>

              </plugin>

              {code}

              • 4. Re: Problem migrating RESTful service from AS6 to AS7
                Stuart Douglas Master

                You are you bootstrapping resteasy? Can you post your web.xml?

                • 5. Re: Problem migrating RESTful service from AS6 to AS7
                  abhi0123 Newbie

                  Sure, here it is. I tried initializing RESTEasy as a Servlet and then as a Filter, similar errors. You can still see the Servlet part commented.

                   

                  {code:xml}

                  <context-param>

                          <param-name>resteasy.scan</param-name>

                          <param-value>true</param-value>

                      </context-param>

                      <!-- <listener>

                          <listener-class>org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap</listener-class>

                      </listener>

                      <servlet>

                          <servlet-name>Resteasy</servlet-name>

                          <servlet-class>org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher</servlet-class>

                      </servlet>

                      <servlet-mapping>

                          <servlet-name>Resteasy</servlet-name>

                          <url-pattern>/*</url-pattern>

                      </servlet-mapping> -->

                   

                      <filter>

                          <filter-name>Resteasy</filter-name>

                          <filter-class>

                              org.jboss.resteasy.plugins.server.servlet.FilterDispatcher

                          </filter-class>

                      </filter>

                   

                      <filter-mapping>

                          <filter-name>Resteasy</filter-name>

                          <url-pattern>/*</url-pattern>

                      </filter-mapping>

                  {code}

                  • 6. Re: Problem migrating RESTful service from AS6 to AS7
                    Stuart Douglas Master

                    AS7 sets up Resteasy for you, there is no need to set it up yourself. You should remove all of the resteasy configuration from your web.xml and replace it with one of the following three options detailed in this document that I just created:

                     

                     

                    https://docs.jboss.org/author/display/AS7/JAX-RS+Reference+Guide

                    • 7. Re: Problem migrating RESTful service from AS6 to AS7
                      abhi0123 Newbie

                      Followed the 3rd approach, "Using web.xml". Service got deployed alright, but blew up with 500 as soon as it got the first client request.

                       

                      {code}

                      23:21:33,022 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/movieservicerestful].[Application]] (http-localhost.localdomain-127.0.0.1-9090-1) Allocate exception for servlet Application: java.lang.ClassCastException: javax.ws.rs.core.Application cannot be cast to javax.servlet.Servlet

                          at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1156) [jbossweb-7.0.0.CR4.jar:7.0.0.Final]

                      {code}

                       

                      web.xml

                      {code:xml}

                      <servlet>

                          <servlet-name>Application</servlet-name>

                          <servlet-class>javax.ws.rs.core.Application</servlet-class>

                      </servlet>

                      <servlet-mapping>

                          <servlet-name>Application</servlet-name>

                          <url-pattern>/*</url-pattern>

                      </servlet-mapping>

                      {code}

                       

                      MovieServiceRestfulClient.java

                      {code}

                      public class MovieServiceRestfulClient {

                       

                          private static final String ENDPOINT = "http://localhost:9090/movieservicerestful";

                       

                          public static void main(String[] args) {

                          new MovieServiceRestfulClient().sendRequest();

                          }

                       

                          /* default access so that it can be tested from JUnit */

                          void sendRequest() {

                          HttpURLConnection conn = null;

                          try {

                              conn = getConnection(ENDPOINT

                                  + "?path=/media", "GET");

                              conn.connect();

                              parseAndPrint(conn, false);

                          } catch (IOException e) {

                              e.printStackTrace();

                          }

                          }

                       

                          private HttpURLConnection getConnection(String urlString, String httpVerb) {

                          HttpURLConnection conn = null;

                          try {

                              URL url = new URL(urlString);

                              conn = (HttpURLConnection) url.openConnection();

                              conn.setRequestMethod(httpVerb);

                          } catch (MalformedURLException e) {

                              e.printStackTrace();

                          } catch (IOException e) {

                              e.printStackTrace();

                          }

                          return conn;

                          }

                       

                          private void parseAndPrint(HttpURLConnection conn, boolean parse) {

                          String xml = "";

                       

                          try {

                              BufferedReader reader = new BufferedReader(new InputStreamReader(

                                  conn.getInputStream()));

                              String next = null;

                              while ((next = reader.readLine()) != null)

                              xml += next;

                              System.out.println("The raw XML:\n" + xml);       

                          } catch (Exception e) {

                              e.printStackTrace();

                          }

                          }  

                      }

                      {code}

                      • 8. Re: Problem migrating RESTful service from AS6 to AS7
                        Stuart Douglas Master

                        Get rid of this:

                         

                        <servlet>
                                <servlet-name>Application</servlet-name>
                                <servlet-class>javax.ws.rs.core.Application</servlet-class>
                            </servlet>

                         

                        it is not required.

                        • 9. Re: Problem migrating RESTful service from AS6 to AS7
                          Stuart Douglas Master

                          Also the name is wrong in the servlet mapping, it must be javax.ws.rs.core.Application not Application.

                          • 10. Re: Problem migrating RESTful service from AS6 to AS7
                            Stuart Douglas Master

                            I have updated the docs to try and make this clearer, also I added a note about the section of the specification that details the three different methods.

                            • 11. Re: Problem migrating RESTful service from AS6 to AS7
                              Stuart Douglas Master

                              You need to remove the resteasy.scan parameter as well, can you remove this, and then post your full log and the contents of the class that should be providing the resource?

                              • 12. Re: Problem migrating RESTful service from AS6 to AS7
                                abhi0123 Newbie

                                I tried without the resteasy.scan too.

                                [Sorry about deleting the post - I was trying to sober up the formatting.]

                                 

                                I will post the service and detailed log.

                                 

                                {code:xml}

                                <context-param>

                                    <param-name>resteasy.scan</param-name>

                                    <param-value>true</param-value>

                                </context-param>

                                 

                                <servlet-mapping>

                                    <servlet-name>javax.ws.rs.core.Application</servlet-name>

                                    <url-pattern>/*</url-pattern>

                                </servlet-mapping>

                                {code}

                                 

                                 

                                {code}

                                -------------------------------------------------------

                                T E S T S

                                -------------------------------------------------------

                                Running name.app.abhi.movieservice.restful.client.MovieServiceRestfulClientTest

                                java.io.FileNotFoundException: http://localhost:9090/movieservicerestful?path=/media

                                    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1434)

                                    at name.app.abhi.movieservice.restful.client.MovieServiceRestfulClient.parseAndPrint(MovieServiceRestfulClient.java:59)

                                {code}

                                • 13. Re: Problem migrating RESTful service from AS6 to AS7
                                  abhi0123 Newbie

                                  {code}

                                  @WebServiceProvider

                                  @BindingType(value = HTTPBinding.HTTP_BINDING)

                                  public class MovieServiceRestful implements Provider<Source> {

                                   

                                      @Resource

                                      protected WebServiceContext wsCtx;

                                      private MovieServiceImpl movieService = new MovieServiceImpl();

                                   

                                      @Override

                                      public Source invoke(Source request) {

                                      if (wsCtx == null) {

                                          throw new RuntimeException("DI failed on wsCtx.");

                                      }

                                   

                                      /* Grab the message context and extract the request verb */

                                      MessageContext msgCtx = wsCtx.getMessageContext();

                                      String httpVerb = (String) msgCtx

                                          .get(MessageContext.HTTP_REQUEST_METHOD);

                                      httpVerb = httpVerb.trim().toUpperCase();

                                      /* Act on the verb. Only GET requests accepted */

                                      if (httpVerb.equals("GET")) {

                                          try {

                                          return doGet(msgCtx);

                                          } catch (Exception e) {

                                          e.printStackTrace();

                                          throw new HTTPException(500);

                                          }

                                      }

                                   

                                      throw new HTTPException(405); // method not allowed

                                      }

                                   

                                      private Source doGet(MessageContext msgCtx) throws IOException {

                                      String queryString = (String) msgCtx.get(MessageContext.QUERY_STRING);

                                      ByteArrayOutputStream stream = null;

                                      XMLEncoder enc = null;

                                   

                                      if (queryString != null) {

                                          /* Serialize object to XML and return */

                                          stream = new ByteArrayOutputStream();

                                          enc = new XMLEncoder(stream);

                                          enc.writeObject(getMovieSet(getPathFromQueryString(queryString,

                                              "path")));

                                          enc.close();

                                          return new StreamSource(new ByteArrayInputStream(

                                              stream.toByteArray()));

                                      }

                                      throw new HTTPException(404);

                                      }

                                   

                                      private String getPathFromQueryString(String queryString, String key) {

                                      String[] parts = queryString.split("=");

                                   

                                      if (!parts[0].equalsIgnoreCase(key)) {

                                          throw new HTTPException(400); // bad request

                                      }

                                   

                                      return parts[1].trim();

                                      }

                                   

                                      private SortedSet<Movie> getMovieSet(String path) throws IOException {

                                      return movieService.getMovieSet(path);

                                      }

                                  }

                                  {code}

                                   

                                  {code}

                                  -------------------------------------------------------

                                  T E S T S

                                  -------------------------------------------------------

                                  Running name.app.abhi.movieservice.restful.client.MovieServiceRestfulClientTest

                                  java.io.FileNotFoundException: http://localhost:9090/movieservicerestful?path=/media

                                      at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1434)

                                      at name.app.abhi.movieservice.restful.client.MovieServiceRestfulClient.parseAndPrint(MovieServiceRestfulClient.java:59)

                                      at name.app.abhi.movieservice.restful.client.MovieServiceRestfulClient.sendRequest(MovieServiceRestfulClient.java:35)

                                      at name.app.abhi.movieservice.restful.client.MovieServiceRestfulClientTest.testSendRequest(MovieServiceRestfulClientTest.java:20)

                                      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

                                      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

                                      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

                                      at java.lang.reflect.Method.invoke(Method.java:597)

                                      at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)

                                      at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)

                                      at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)

                                      at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)

                                      at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)

                                      at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)

                                      at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)

                                      at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)

                                      at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)

                                      at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)

                                      at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)

                                      at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)

                                      at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)

                                      at org.junit.runners.ParentRunner.run(ParentRunner.java:236)

                                      at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:53)

                                      at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:123)

                                      at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:104)

                                      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

                                      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

                                      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

                                      at java.lang.reflect.Method.invoke(Method.java:597)

                                      at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:164)

                                      at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:110)

                                      at org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:172)

                                      at org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcessWhenForked(SurefireStarter.java:104)

                                      at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:70)

                                  {code}

                                  • 14. Re: Problem migrating RESTful service from AS6 to AS7
                                    Stuart Douglas Master

                                    Thats not a JAX-RS webservice, the resteasy configuration should not affect it.

                                     

                                    JAX-WS is only partly implemented in 7.0, it may be that you have to wait for 7.1

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