我使用SAPJco3.jar通过Java连接到SAP。然而，当我试图停止我的桥梁，我得到了一些错误。
断开连接的代码如下：
public void tearDown() {
log.info("tearDown() | Starting tear down ...");
log.info("tearDown() | Stopping {} JCO servers ...", jcoServerList.size());
System.out.printf("ntearDown()| Stopping %s JCO servers ...", jcoServerList.size());
System.out.println();
for (JCoServer jcoServer : jcoServerList.values()) {
try {
jcoServer.stop();
jcoServer.release();
} catch (Exception e) {
log.error("Failed to STOP JCO server {} e={}", jcoServer.getProgramID(), e.toString());
}
}
jcoServerDataManager.clearAllData();
jcoServerDataManager = null;
log.info("tearDown() | Done with tear down!");
}
我得到的错误JCO_ERROR_CONCURRENT_CALL是这样的：
2018-12-06 15:00:15,504|INFO ||||||SapSessionReferenceProvider| getCurrentSessionReference() | Retrieving current session reference ... 2018-12-06 15:00:15,504|INFO ||||||SapSessionReferenceProvider| getCurrentSessionReference() | Current session reference retrieved Ok (id: sap-session-Default:Test_Bridge_With_External_Test_SAP_JCO:Y3IV_3) 2018-12-06 15:00:15,504|INFO ||||||SapSessionReferenceProvider| getCurrentSessionReference() | Retrieving current session reference ... 2018-12-06 15:00:15,504|INFO ||||||SapSessionReferenceProvider| getCurrentSessionReference() | Current session reference retrieved Ok (id: sap-session-Default:Test_Bridge_With_External_Test_SAP_JCO:Y3IV_3) 2018-12-06 15:00:15,504|ERROR||||||SapConnectionManagerImpl| clearConnectionContext() | Failed to end SAP context: {} com.sap.conn.jco.JCoException: (132) JCO_ERROR_CONCURRENT_CALL: Concurrent call detected. Connection [13] currently used in another thread: pool-2-thread-1 [100] in execute since 7999 ms. Current thread: 22184429@qtp-6003181-5 [67], action: release. at com.sap.conn.jco.rt.ClientConnection.acquireBusyState(ClientConnection.java:185) at com.sap.conn.jco.rt.PoolingFactory.releaseClient(PoolingFactory.java:655) at com.sap.conn.jco.rt.ConnectionManager.releaseClient(ConnectionManager.java:234) at com.sap.conn.jco.rt.Context.endSequence(Context.java:497) at com.sap.conn.jco.rt.JCoRuntime.endSequence(JCoRuntime.java:805) at com.sap.conn.jco.JCoContext.end(JCoContext.java:97) at com.zetes.crystal.sap.io.impl.SapConnectionManagerImpl.clearConnectionContext(SapConnectionManagerImpl.java:258) at com.zetes.crystal.sap.io.impl.SapConnectionManagerImpl.closeSapConnection(SapConnectionManagerImpl.java:145) at com.zetes.crystal.sap.io.impl.SapConnectionManagerImpl.tearDown(SapConnectionManagerImpl.java:76) 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 org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:297) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeDestroyMethods(InitDestroyAnnotationBeanPostProcessor.java:270) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeDestruction(InitDestroyAnnotationBeanPostProcessor.java:162) at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:140) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean(DefaultSingletonBeanRegistry.java:487) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton(DefaultSingletonBeanRegistry.java:462) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean(DefaultSingletonBeanRegistry.java:480) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton(DefaultSingletonBeanRegistry.java:462) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:430) at org.springframework.context.support.AbstractApplicationContext.destroyBeans(AbstractApplicationContext.java:853) at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:831) at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:794) at com.zetes.crystal.setup.server.bridges.impl.BridgeManagementServiceImpl.stopBridge(BridgeManagementServiceImpl.java:614) at com.zetes.crystal.setup.server.bridges.impl.BridgeManagementServiceImpl.stopBridge(BridgeManagementServiceImpl.java:340) 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 org.gwtwidgets.server.spring.GWTRPCServiceExporter.invokeMethodOnService(GWTRPCServiceExporter.java:148) at org.gwtwidgets.server.spring.GWTRPCServiceExporter.processCall(GWTRPCServiceExporter.java:298) at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248) at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62) at org.gwtwidgets.server.spring.GWTRPCServiceExporter.handleRequest(GWTRPCServiceExporter.java:363) at org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle(HttpRequestHandlerAdapter.java:49) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:511) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:390) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418) at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230) at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:536) at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:930) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:747) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:405) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) 2018-12-06 15:00:15,504|INFO ||||||SapUserManagementServiceImpl| SAP user <Y3IV_3> has been released 2018-12-06 15:00:15,504|INFO ||||||SapConnectionManagerImpl| tearDown() | Done with SAP connection manager tear down! 2018-12-06 15:00:15,504|INFO ||||||JcoServerConnectionFactory| tearDown() | Starting tear down ... 2018-12-06 15:00:15,504|INFO ||||||JcoServerConnectionFactory| tearDown() | Stopping 1 JCO servers ... 2018-12-06 15:00:15,504|DEBUG||||||JcoServerConnectionFactory| >> STATUS = ALIVE 2018-12-06 15:00:15,504|DEBUG||||||JcoServerConnectionFactory| >> Stopping JCO Server :: 3IV_ZE9_CLNT_890_001 2018-12-06 15:00:15,504|INFO ||||||JcoServerConnectionFactory| JCO Server ProgID: 3IV_ZE9_CLNT_890_001 [10] ALIVE -> STOPPING 2018-12-06 15:00:15,504|INFO ||||||JcoServerConnectionFactory| tearDown() | Done with tear down! 2018-12-06 15:00:15,520|INFO ||||||CockpitServiceImpl| Cockpit harvester of the bridge [Default:Test_Bridge_With_External_Test_SAP_JCO] has been un-registered from Cockpit manager 2018-12-06 15:00:15,520|INFO ||||||BridgeManagementServiceImpl| bridge [Test_Bridge_With_External_Test_SAP_JCO] from site [Default] has been stopped OK 2018-12-06 15:00:15,520|DEBUG||||||SimpleThreadPool| WorkerThread is shutting down 2018-12-06 15:00:15,520|INFO ||||||BridgeConfigurationPersiterImpl| Configuration for the bridge [Test_Bridge_With_External_Test_SAP_JCO] in site [Default] has been persisted OK 2018-12-06 15:00:15,520|DEBUG||||||BridgeManagementServiceImpl| onApplicationEvent() | begin 2018-12-06 15:00:15,536|DEBUG||||||SimpleThreadPool| WorkerThread is shutting down 2018-12-06 15:00:15,567|DEBUG||||||SimpleThreadPool| WorkerThread is shutting down 2018-12-06 15:00:15,567|DEBUG||||||SimpleThreadPool| WorkerThread is shutting down 2018-12-06 15:00:15,583|DEBUG||||||SimpleThreadPool| WorkerThread is shutting down 2018-12-06 15:00:15,676|DEBUG||||||SimpleThreadPool| WorkerThread is shutting down 2018-12-06 15:00:15,676|DEBUG||||||SimpleThreadPool| WorkerThread is shutting down 2018-12-06 15:00:15,676|DEBUG||||||SimpleThreadPool| WorkerThread is shutting down 2018-12-06 15:00:15,692|DEBUG||||||SimpleThreadPool| WorkerThread is shutting down 2018-12-06 15:00:15,739|DEBUG||||||SimpleThreadPool| WorkerThread is shutting down
当我试图停止网桥时，该网桥已经有一些连接处于活动状态，并且jcoserver的状态从alive->停止，它永远不会变成STOPPED。如果没有连接到服务器，则会进入STOPPED状态，不会出现任何问题。
谁能为这个问题提供指导吗？我有什么办法可以强行阻止这座桥吗？
谢谢！
您的自定义SessionReferenceProvider实现似乎有一个错误，即在多个线程中同时返回相同的会话ID。你真的需要自己的SessionReferenceProvider吗？或者JCo的默认版本可能已经足够了吗？也许您可以在不注册自己的SessionReferenceProvider实例的情况下测试您的场景，看看它是否有效。
如果还没有使用最新的JCo补丁级别，我还建议更新它，以排除JCo中已经修复的与此相关的错误。SAP刚刚发布了JCo 3.0.19。看见https://support.sap.com/jco。