使用 ejb 将 WAS 连接到 JRules

Question

我正在尝试从部署在 WAS (8.5) 实例上的 EAR 调用 RES 服务器 (v 7.1)。我能够从独立程序调用规则服务器并且它的工作没有任何问题。

但是我的主要问题是从部署在其他 WAS 实例上的另一个 EAR 远程调用部署在 RES 服务器上的 EJB。在这种情况下，我们无法远程查找 EJB。

根据下面的线程，我们应该绕过 EJB3 IlrSessionFactory API，并应该使用 Java EJB API 直接查找规则会话。

http://www-01.ibm.com/support/docview.wss?uid=swg21586621

IBM 的建议是使用标准 java api 进行 ejb 查找或升级到 Rule Server 7.5（最新 8.x）。

代码 sn-p

// Initialization
               Map<String, Object> outputParms = null;


               IlrStatelessSession session=null;
                IlrSessionResponse response=null;  

               // IlrSessionFactory factory = getFactory();

               try {

                         sessionFactory = JRulesInvoker.getFactory();

                         Hashtable<String, String> env = new Hashtable<String, String>();
                         env.put(Context.INITIAL_CONTEXT_FACTORY,"com.ibm.websphere.naming.WsnInitialContextFactory");
                         env.put(Context.PROVIDER_URL,"corbaloc:iiop:localhost:28004");
                         Context ctx = new InitialContext(env);

                         Object lookupResult = ctx.lookup("ilog.rules.res.session.impl.ejb3.IlrStatelessSessionRemote");

                         PortableRemoteObject aPortableRemoteObject = new PortableRemoteObject();
                         session = (IlrStatelessSession) aPortableRemoteObject.narrow(lookupResult, IlrStatelessSession.class);

                         IlrPath path = new IlrPath(ruleApp, ruleSet);



                         IlrSessionRequest request = sessionFactory.createRequest();

                         request.setRulesetPath(path);

                         request.setInputParameters(inputParms);


                         request.getTraceFilter().setInfoTotalRulesFired(true);
                         request.getTraceFilter().setInfoExecutionEvents(true); 
                         request.setTraceEnabled(true);

                         // session = sessionFactory.createStatelessSession();
                         System.out.println("created session " + IlrJNDIConstants.STATELESS_SESSION_EJB3_NAME);

                         response = session.execute(request);

                         System.out.println(response.getRulesetExecutionTrace().getTotalRulesFired() + " rule(s) fired.");
                         System.out.println("Execution output=" + response.getRulesetExecutionOutput());


                         // Return the result(s)
                         outputParms = response.getOutputParameters();

                         if (logger.isEnabledFor(Level.DEBUG)) {
                                  if (response.getRulesetExecutionOutput() != null) {
                                            logger.debug("RuleSet execution output: \n" + response.getRulesetExecutionOutput());
                                  }
                         }

               }catch (IlrSessionCreationException cx) {
                         if (logger.isEnabledFor(Level.ERROR)) {
                                  logger.error(cx.getMessage(), cx);
                         }        
               } catch (IlrSessionException e) {
                         if (logger.isEnabledFor(Level.ERROR)) {
                                  logger.error(e.getMessage(), e);
                         }
               } catch (NamingException e) {
                         if (logger.isEnabledFor(Level.ERROR)) {
                                  logger.error(e.getMessage(), e);
                         }
               } 

错误

Context: idewas/nodes/ide/servers/server1, name: ilog.rules.res.session.impl.ejb3.IlrStatelessSessionRemote: First component in name ilog.rules.res.session.impl.ejb3.IlrStatelessSessionRemote not found.
javax.naming.NameNotFoundException: Context: idewas/nodes/ide/servers/server1, name: ilog.rules.res.session.impl.ejb3.IlrStatelessSessionRemote: First component in name ilog.rules.res.session.impl.ejb3.IlrStatelessSessionRemote not found. [Root exception is org.omg.CosNaming.NamingContextPackage.NotFound: IDL:omg.org/CosNaming/NamingContext/NotFound:1.0]
at com.ibm.ws.naming.jndicos.CNContextImpl.mapNotFoundException(CNContextImpl.java:4563)
at com.ibm.ws.naming.jndicos.CNContextImpl.doLookup(CNContextImpl.java:1821)
at com.ibm.ws.naming.jndicos.CNContextImpl.doLookup(CNContextImpl.java:1776)
at com.ibm.ws.naming.jndicos.CNContextImpl.lookupExt(CNContextImpl.java:1433)
at com.ibm.ws.naming.jndicos.CNContextImpl.lookup(CNContextImpl.java:615)
at com.ibm.ws.naming.util.WsnInitCtx.lookup(WsnInitCtx.java:165)
at com.ibm.ws.naming.util.WsnInitCtx.lookup(WsnInitCtx.java:179)
at org.apache.aries.jndi.DelegateContext.lookup(DelegateContext.java:161)
at javax.naming.InitialContext.lookup(InitialContext.java:436)

Answer 1

在 RES 服务器的 SystemOut.log 中检查 EJB 的绑定名称是什么，因为看起来那里没有 ilog.rules.res.session.impl.ejb3.IlrStatelessSessionRemote。此外，如果您在同一主机上使用相同名称有两台服务器，例如server1 您可能有互操作性问题，需要将 JVM 属性 com.ibm.websphere.orb.uniqueServerName 设置为 true。更多详情请查看以下页面Application access problems