2 Replies Latest reply on Nov 3, 2005 8:25 AM by Adrian Brock

    JNDI - StreamCorruptedException [unexpected block data]

    Geoff Powdrell Newbie

      Hi,
      I have a standard java project which has Junit Test case in it. The Junit test case is setting up the JNDI environment, and then I do a lookup on my object. I have found that by including the jnp-client.jar and the jboss-common-client.jar I have eliminated a series of exceptions. I have looked at my my JNDI tree and have seen the object that I am looking up; so I don't get the NameNotFoundException, I'm passed that.
      What I get is this, this is my stack trace....

      javax.naming.CommunicationException [Root exception is java.io.StreamCorruptedException: unexpected block data]
      at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:707)
      at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:572)
      at javax.naming.InitialContext.lookup(Unknown Source)
      at RegisterTest.testRegister(RegisterTest.java:38)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      at java.lang.reflect.Method.invoke(Unknown Source)
      at junit.framework.TestCase.runTest(TestCase.java:154)
      at junit.framework.TestCase.runBare(TestCase.java:127)
      at junit.framework.TestResult$1.protect(TestResult.java:106)
      at junit.framework.TestResult.runProtected(TestResult.java:124)
      at junit.framework.TestResult.run(TestResult.java:109)
      at junit.framework.TestCase.run(TestCase.java:118)
      at junit.framework.TestSuite.runTest(TestSuite.java:208)
      at junit.framework.TestSuite.run(TestSuite.java:203)
      at junit.framework.TestSuite.runTest(TestSuite.java:208)
      at junit.framework.TestSuite.run(TestSuite.java:203)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:478)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:344)
      at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
      Caused by: java.io.StreamCorruptedException: unexpected block data
      at java.io.ObjectInputStream.readObject0(Unknown Source)
      at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
      at java.io.ObjectInputStream.readSerialData(Unknown Source)
      at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
      at java.io.ObjectInputStream.readObject0(Unknown Source)
      at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
      at java.io.ObjectInputStream.readSerialData(Unknown Source)
      at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
      at java.io.ObjectInputStream.readObject0(Unknown Source)
      at java.io.ObjectInputStream.readObject(Unknown Source)
      at java.rmi.MarshalledObject.get(Unknown Source)
      at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:57)
      at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:637)
      ... 20 more


      Here is my code .....

      import gov.qiris.service.HelloWorld;

      import java.util.Hashtable;
      import java.util.Properties;

      import javax.naming.InitialContext;

      import junit.framework.TestCase;

      public class RegisterTest extends TestCase {

      protected void setUp() throws Exception {
      super.setUp();
      }

      public static Hashtable getDefaultJNDI() {
      Properties p = new Properties();

      p.setProperty(InitialContext.PROVIDER_URL, "jnp://localhost:1099");
      p.setProperty(InitialContext.INITIAL_CONTEXT_FACTORY,
      "org.jnp.interfaces.NamingContextFactory");
      p.put("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces");

      return p;
      }

      // test register functionality.
      public void testRegister() {

      try {
      InitialContext initialContext = new InitialContext(getDefaultJNDI());

      String s = HelloWorld.class.getName();
      Object obj = initialContext.lookup(s);
      System.out.println("success");
      }
      catch (Exception e) {
      e.printStackTrace();
      }

      }

      protected void tearDown() throws Exception {
      super.tearDown();
      }

      }

      HelloWorld is a Session Bean interface and lives in a middle tier project. It is an interface to my remote Session Bean instance.

      Any ideas anyone ?
      thanks Geoff