Wildfly上的EJB从另一个Wildfly调用远程EJB

Question

我目前的问题一般是,我的机器上运行了两个Wildfly 8.2.0Final实例.我知道,有类似的问题,但它们都没有真正帮助解决我的问题.其中一个包含一个restful应用程序,SenderBean它在收到GET时触发无状态会话bean .之后,这个无状态会话bean应该从远程无状态会话bean调用一个方法,该bean PrintBean位于另一个wildfly实例上.

我将首先解释一下到目前为止我所做的事情(也许我错过了一些东西,我对Java EE和Wildfly来说很新).

我会打电话给Wildfly实例与SenderBean在Sender和一个用PrintBean了Receiver.

我创建了一个名为应用程序的用户Stefan使用密码stefan,属于组guest上Receiver.在Sender,在standalone-full.xml,我通过推出添加了一个安全领域

<security-realm name="ejb-security-realm">
  <server-identities>
    <secret value="c3R1ZmFu"/>
  </server-identities>
</security-realm>

进入该<security-realms>部分.我还通过put添加了一个outbound-socket-binding

<outbound-socket-binding name="remote-ejb">
  <remote-destination host="localhost" port="8080"/>
</outbound-socket-binding>

进入该<socket-binding-group ...>部分.最后,我通过put创建了一个出站连接

<outbound-connections>
  <remote-outbound-connection name="remote-ejb-connection" outbound-socket-binding-ref="remote-ejb" username="Stefan" security-realm="ejb-security-realm">
    <properties>
      <property name="SASL_POLICY_NOANONYMOUS" value="false"/>
      <property name="SSL_ENABLED" value="false"/>
    </properties>
  </remote-outbound-connection>
</outbound-connections>

进入该<subsystem xmlns="urn:jboss:domain:remoting:2.0">部分.

我Sender使用CLI命令standalone.bat -c standalone-full.xml -Djboss.socket.binding.port-offset=100 -Djboss.node.name=Sender和Receiverwith启动standalone.bat -c standalone-full.xml -Djboss.node.name=Receiver.

其上的Local Stateless Session Bean Sender称为SenderBean:

@Stateless
public class SenderBean implements SenderService {

  private static final Logger logger = Logger.getLogger(SenderBean.class.getSimpleName());

  public void send(){
    logger.info("Trying to invoke");
    this.invoke();
  }

  private void invoke() {
    Properties clientProperties = new Properties();
    clientProperties.put("remote.connections", "default");
    clientProperties.put("remote.connection.default.port", "8080");
    clientProperties.put("remote.connection.default.host", "localhost");

    Properties properties = new Properties();
    properties.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");        

    try {
        Context context = new InitialContext(properties);
        context = new InitialContext(properties);
        Object x = context.lookup("ejb:baseproject-ear-01.00.00-SNAPSHOT/testdomain-service-01.00.00-SNAPSHOT/Receiver/PrintBean!com.schubert.baseproject.testdomain.service.PrintService");
        logger.info("Obtained some object "+x.toString());
        logger.info("Trying to cast.");
        PrintService s = (PrintService) x;
        logger.info("Cast successful");
        logger.info("Printing using remote ejb: "+s.print("Markus"));
    } catch (NamingException e) {
        e.printStackTrace();
    }
  } 
}

并Receiver包含PrintBean:

@Stateless
@Remote(PrintService.class)
public class PrintBean implements PrintService {

  @Override
  public String print(String name) {
    return "Hello " + name;
  }
}

现在的问题是,我总是得到一个IllegalStateException说EJBCLIENT000025:没有EJB接收器可用于处理......

我可能做错了吗？我是EJB和Wildfly的新手.您可以在GitHub上找到项目设置.

Answer 1

您应该将文件 jboss-ejb-client.xml 添加到发送方 EAR（而不是 WAR）。将其放在 application.xml 旁边。

jboss-ejb-client.xml内容：

<jboss-ejb-client>
    <client-context>
        <ejb-receivers>
            <remoting-ejb-receiver outbound-connection-ref="remote-ejb-connection"/>
        </ejb-receivers>
    </client-context>
</jboss-ejb-client> 

在发送方 bean 中，两行就足够了：

Context context = new InitialContext();
Object x = context.lookup("ejb:baseproject-ear-01.00.00-SNAPSHOT/testdomain-service-01.00.00-SNAPSHOT/PrintBean!com.schubert.baseproject.testdomain.service.PrintService");

请注意，我从路径中删除了“Receiver/”。您可以在服务器日志中找到 JNDI 绑定。