无法在 JBoss 6.4 上查找远程 EJB3

Posted 2023-02-19

【中文标题】无法在 JBoss 6.4 上查找远程 EJB3

【英文标题】：Cannot lookup remote EJB3 on JBoss 6.4

【发布时间】：2018-04-08 00:52:45

【问题描述】：

我需要为我的本地 ejb 做一个 ejb 测试客户端，所以这是我的 ejb 应用程序详细信息：

这是我要查找的 bean：

ServiceFacadeRemote

@Remote
public interface ServiceFacadeRemote 

ServiceFacade

// ServiceFacade implementation class
@Stateless
public class ServiceFacade implements ServiceFacadeRemote,ServiceFacadeLocal

...

在 JBoss 6.4 面板的“部署”部分下，我还可以看到服务的 jndi 名称：ServiceFacade

还有部署耳朵的信息

ear name:   ecommerce.ear
ejb name:   ecommerce-ejb-0.0.1-SNAPSHOT.jar

我按照此链接上的指南进行操作：

https://docs.jboss.org/author/display/AS72/EJB+invocations+from+a+remote+client+using+JNDI

这是我的junit测试：

static Object lookupRemoteStatelessEjb(Class<?> clazz, Context context) throws NamingException 

    // The app name is the application name of the deployed EJBs. This is typically the ear name
    // without the .ear suffix. However, the application name could be overridden in the application.xml of the
    // EJB deployment on the server.
    // Since we haven't deployed the application as a .ear, the app name for us will be an empty string
    final String appName = "ecommerce";
    // This is the module name of the deployed EJBs on the server. This is typically the jar name of the
    // EJB deployment, without the .jar suffix, but can be overridden via the ejb-jar.xml
    // In this example, we have deployed the EJBs in a jboss-as-ejb-remote-app.jar, so the module name is
    // jboss-as-ejb-remote-app
    final String moduleName = "ecommerce-ejb-0.0.1-SNAPSHOT";
    // AS7 allows each deployment to have an (optional) distinct name. We haven't specified a distinct name for
    // our EJB deployment, so this is an empty string
    final String distinctName = "";
    // The EJB name which by default is the simple class name of the bean implementation class
    final String beanName = clazz.getSimpleName();
    // the remote view fully qualified class name
    final String viewClassName = clazz.getName();
    // let's do the lookup
    return context.lookup("ejb:" + appName + "/" + moduleName + "/" + distinctName + "/" + beanName + "!" + viewClassName);


@Test
public void readService() 

    final Hashtable<Object,Object> jndiProperties = new Hashtable<Object,Object>();  
    jndiProperties.put(InitialContext.INITIAL_CONTEXT_FACTORY, "org.jboss.naming.remote.client.InitialContextFactory");
    jndiProperties.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");
    jndiProperties.put(InitialContext.PROVIDER_URL, "remote://localhost:4447");
    jndiProperties.put("jboss.naming.client.ejb.context", true);

    Context ctx;

    try 
        ctx = new InitialContext(jndiProperties);

        ServiceFacadeRemote service = (ServiceFacadeRemote)lookupRemoteStatelessEjb(ServiceFacadeRemote.class, ctx);

        Assert.assertNotNull(service);

        Object output = service.readService(..)

        Assert.assertNotNull(output);

     catch (NamingException e) 
        Assert.fail(e.getMessage());            
    

上线：

Object output = service.readService(..)

我收到此错误：

java.lang.IllegalStateException: EJBCLIENT000025: 没有 EJB 接收器可用于处理 [appName:ecommerce-backend,...

更糟糕的是通过更改appName或moduleName，错误是一样的，所以我认为我正在做的事情有一个基本错误......

有什么办法吗？

更新

用这个改变调用：

ejb:ecommerce/ecommerce-ejb-0.0.1-SNAPSHOT//ServiceFacade!it.infocert.shop.facade.remote.ServiceFacadeRemote

但还是不行。

但是，下面的调用（没有 ejb: 前缀）似乎有效：

ecommerce/ecommerce-ejb-0.0.1-SNAPSHOT/ServiceFacade!it.infocert.shop.facade.remote.ServiceFacadeRemote

有什么意义？？？

【参考方案1】：

在lookupRemoteStatelessEjb()beanName默认是'bean实现的简单类名'

假设所有远程接口以FacadeRemote 结束，所有无状态类以Facade 结束，您可以编写代码

    final String beanName = clazz.getSimpleName().replaceAll("Remote$","");

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