EJB客户端错误

发布于 2024-08-07 04:38:29 字数 1683 浏览 8 评论 0原文

我创建了一个 EJB 2。我将其部署在 JBoss-IDE 1.6 上，然后创建了一个 JUnit 测试来访问它。这是我用于客户端的代码：

   public class DossierBeanTest extends TestCase {
         protected DossierHome dossierHome;
         protected Dossier dossier;

         public DossierBeanTest(String argo){
                super(arg0);
         }

         protected void setUp() throws Exception {
                super.setUp();
                Hashtable env=new Hashtable();


               env.put(Context.INITIAL_CONTEXT_FACTORY,"org.jnp.interfaces.NamingContextFactory");
                env.put(Context.URL_PKG_PREFIXES,"org.jboss.naming:org.jnp.interfaces");
                env.put(Context.PROVIDER_URL,"jnp://localhost:1199");
                Context context=new InitialContext(env);

                Object finderRef=context.lookup(dossierHome.JNDI_NAME);
                dossierHome=(DossierHome)PortableRemoteObject.narrow(finderRef,DossierHome.class);
                dossier=dossierHome.create();

          }

          public void testGetString() throws RemoteException {
                 assertEquals("Test",dossier.getTest());
          }

但问题是该客户端失败并出现错误：

      javax.naming.CommunicationException: Could not obtain connection to any of these  
      urls: localhost:1199 and discovery failed with error :  
      javax.naming.CommunicationException: Receive timed out [Root Exception is 
      java.net.SocketTimeoutException: Receive timed out][Root exception is  
      javax.naming.CommunicationException: Failed to connect to server localhost:1199 
      ....


      at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1416)

...

原文

I created an EJB 2. I deployed it on JBoss-IDE 1.6 and then, I created a JUnit test to access it. here's the code I used for the client :

   public class DossierBeanTest extends TestCase {
         protected DossierHome dossierHome;
         protected Dossier dossier;

         public DossierBeanTest(String argo){
                super(arg0);
         }

         protected void setUp() throws Exception {
                super.setUp();
                Hashtable env=new Hashtable();


               env.put(Context.INITIAL_CONTEXT_FACTORY,"org.jnp.interfaces.NamingContextFactory");
                env.put(Context.URL_PKG_PREFIXES,"org.jboss.naming:org.jnp.interfaces");
                env.put(Context.PROVIDER_URL,"jnp://localhost:1199");
                Context context=new InitialContext(env);

                Object finderRef=context.lookup(dossierHome.JNDI_NAME);
                dossierHome=(DossierHome)PortableRemoteObject.narrow(finderRef,DossierHome.class);
                dossier=dossierHome.create();

          }

          public void testGetString() throws RemoteException {
                 assertEquals("Test",dossier.getTest());
          }

but the problem is that this client fails with the error :

      javax.naming.CommunicationException: Could not obtain connection to any of these  
      urls: localhost:1199 and discovery failed with error :  
      javax.naming.CommunicationException: Receive timed out [Root Exception is 
      java.net.SocketTimeoutException: Receive timed out][Root exception is  
      javax.naming.CommunicationException: Failed to connect to server localhost:1199 
      ....


      at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1416)

....

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

后eg是否自 2024-08-14 04:38:29

正如其他人已经指出的那样，JBoss 命名服务器默认侦听端口 1099。所以，除非您在 conf/jboss-service.xml 中更改此值（服务名称 jboss:service=Naming），您应该这样写：

env.put(Context.PROVIDER_URL,"jnp://localhost:1099);

话虽如此，我通常更喜欢提供 JNDI jndi.properties 文件（放置在类路径中）中的环境设置。在您的情况下，具有以下内容：

java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces
java.naming.provider.url=localhost:1099

并使用空参数构造函数 InitiatContext()：

Context context = new InitialContext();

这使得代码可移植（在测试环境中可能不是问题，好吧，我更喜欢不硬编码这样的东西）。

As other already pointed out, JBoss naming server listens by default on port 1099. So, unless you changed this value in conf/jboss-service.xml (service name jboss:service=Naming), you should write:

env.put(Context.PROVIDER_URL,"jnp://localhost:1099);

That being said, I usually prefer to provide the JNDI environment settings in a jndi.properties file (that you put on the classpath). In your case, with the following content:

java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces
java.naming.provider.url=localhost:1099

And use the empty parameter constructor InitiatContext():