org.omg.CORBA.MARSHAL:服务器端异常:null [英] org.omg.CORBA.MARSHAL: Server-side Exception: null
问题描述
我正在尝试注册CORBA CosNotification服务.在我要连接的服务的文档中，它说我必须连接到CosNotifyComm::SequencePushConsumer对象，并将其附加到通知服务.我已经包含了我的代码，而我又得到了错误.
I'm trying to register to a CORBA CosNotification Service. In the documentation of the service I'm trying to connect to, it says I have to a CosNotifyComm::SequencePushConsumer object, and attach it to the notification service. I've included my code, and the error I'm getting back.
AlarmClient.java
import NotificationIRPSystem.*;
import org.omg.CosNotification.*;
import org.omg.CosNotifyComm.*;
import org.omg.CosNotifyChannelAdmin.*;
import org.omg.CosNotifyFilter.*;
import org.omg.CosNaming.*;
import org.omg.CosNaming.NamingContextPackage.*;
import org.omg.PortableServer.*;
public class AlarmClient
{
static _NotificationIRPOperations notiOp;
public static void main (String args [])
{
try{
org.omg.CORBA.ORB orb = org.omg.CORBA.ORB.init (args, null);
org.omg.CORBA.Object objRef =
orb.resolve_initial_references ("NameService");
System.out.println("IOR===> " + objRef);
NamingContextExt nc = NamingContextExtHelper.narrow(objRef);
String name = "com/ericsson/nms/cif/service/NMSNAConsumer";
String portal = "com/ericsson/nms/cif/service/NMSNAPortal";
org.omg.CORBA.Object notiObj = nc.resolve_str(name);
System.out.println(nc.resolve_str(portal));
System.out.println("noti---->" + notiObj);
_NotificationIRPOperations tt = _NotificationIRPOperationsHelper.narrow(notiObj);
IRPManager irpMan = new IRPManager();
POA poa = POAHelper.narrow(orb.resolve_initial_references("RootPOA"));
poa.the_POAManager().activate();
org.omg.CORBA.Object objNotiServer = poa.servant_to_reference(irpMan);
String manager_reference = orb.object_to_string(objNotiServer);
System.out.println("MANAGER REF: " + manager_reference);
System.out.println("OBJ NOTI SERVER: " + objNotiServer);
int time_tick = 15;
String filter = "";
String[] asd = {};
NotificationIRPConstDefs.EventTypesSetHolder e_list = new NotificationIRPConstDefs.EventTypesSetHolder();
NotificationIRPConstDefs.ExtendedEventTypesSetHolder ex_list = new NotificationIRPConstDefs.ExtendedEventTypesSet\
Holder();
String cats[] = tt.get_notification_categories(e_list, ex_list);
String res = tt.attach_push(manager_reference, time_tick, asd , filter);
// System.out.println("SUCCESS--->" + res);
// String[] ids = tt.get_subscription_ids(manager_reference);
System.out.println("ALARMIRPOPERATIONS_----> " + tt);
} catch (Exception e){
System.out.println ("ERROR: " + e);
e.printStackTrace (System.out);
}
}
}
IRPManager.java
import NotificationIRPSystem.*;
import org.omg.CosNotification.*;
import org.omg.CosNotifyComm.*;
import org.omg.CosNotifyChannelAdmin.*;
import org.omg.CosNotifyFilter.*;
import org.omg.CosNaming.*;
import org.omg.CosNaming.NamingContextPackage.*;
import org.omg.PortableServer.*;
public class IRPManager
extends SequencePushConsumerPOA
{
public void disconnect_sequence_push_consumer()
{
System.out.println("Disconnected!");
}
public void push_structured_events(org.omg.CosNotification.StructuredEvent[] notifications) throws org.omg.CosEvent\
Comm.Disconnected
{
System.out.println("Received Event");
}
public void offer_change(org.omg.CosNotification.EventType[] added, org.omg.CosNotification.EventType[] removed) th\
rows org.omg.CosNotifyComm.InvalidEventType
{
System.out.println("Offer Change!");
}
}
输出
14-Aug-2013 3:54:02 PM org.jacorb.orb.ORBSingleton <init>
INFO: created ORBSingleton
IOR===> IOR:000000000000001D49444C3A6F6D672E6F72672F434F5242412F4F626A6563743A312E3000000000000000010000000000000040000102000000000F3137322E33302E3132302E3135380000C06600000000000B4E616D655365727669636500000000010000000000000008000000004A414300
14-Aug-2013 3:54:03 PM org.jacorb.orb.giop.ClientConnectionManager getConnection
INFO: ClientConnectionManager: created new ClientGIOPConnection to 172.30.120.158:49254 (7bea5671)
14-Aug-2013 3:54:03 PM org.jacorb.orb.iiop.ClientIIOPConnection connect
INFO: Connected to 172.30.120.158:49254 from local port 57080
14-Aug-2013 3:54:03 PM org.jacorb.orb.iiop.ClientIIOPConnection close
INFO: Client-side TCP transport to 172.30.120.158:49254 closed.
14-Aug-2013 3:54:03 PM org.jacorb.orb.giop.ClientConnectionManager getConnection
INFO: ClientConnectionManager: created new ClientGIOPConnection to 10.20.0.4:49254 (58a17083)
14-Aug-2013 3:54:03 PM org.jacorb.orb.iiop.ClientIIOPConnection connect
INFO: Connected to 10.20.0.4:49254 from local port 52574
IOR:000000000000001849444C3A506F7274616C2F53657276696365733A312E300000000001000000000000007C000102000000000A31302E32302E302E3800C27B0000002000504D43000000040000000C2F466163746F7279504F4100000000040000000000000003564953030000000500070801FF000000000000000000000800000000564953000000000100000018000000000001000100000001050100010001010900000000
noti---->IOR:000000000000004449444C3A336770707361352E6F72672F4E6F74696669636174696F6E49525053797374656D2F4E6F74696669636174696F6E4952504F7065726174696F6E733A312E3000000000010000000000000088000102000000000A31302E32302E302E3800C27B0000002C00504D43000000040000000C2F466163746F7279504F4100000000104E4D534E41436F6E73756D6572322E3300000003564953030000000500070801FF000000000000000000000800000000564953000000000100000018000000000001000100000001050100010001010900000000
14-Aug-2013 3:54:03 PM org.jacorb.poa.AOM add
INFO: oid: 00 40 46 20 4B 4D 29 05 2A 07 10 06 30 46 38 14 14 1B 48 4C .@F KM).*...0F8...HL1B .object is activated
14-Aug-2013 3:54:03 PM org.jacorb.poa.POA getImplName
INFO: Using server ID (8624227886) for transient POA
MANAGER REF: IOR:000000000000003349444C3A6F6D672E6F72672F436F734E6F74696679436F6D6D2F53657175656E636550757368436F6E73756D65723A312E300000000000010000000000000050000102000000000E3137322E31362E32342E31353200B91900000020383632343232373838362F004046204B4D29052A07100630463814141B484C1B000000010000000000000008000000004A414300
OBJ NOTI SERVER: IOR:000000000000003349444C3A6F6D672E6F72672F436F734E6F74696679436F6D6D2F53657175656E636550757368436F6E73756D65723A312E300000000000010000000000000050000102000000000E3137322E31362E32342E31353200B91900000020383632343232373838362F004046204B4D29052A07100630463814141B484C1B000000010000000000000008000000004A414300
14-Aug-2013 3:54:03 PM org.jacorb.orb.giop.ClientConnectionManager getConnection
INFO: ClientConnectionManager: created new ClientGIOPConnection to 10.20.0.8:49787 (68e6ff0d)
14-Aug-2013 3:54:03 PM org.jacorb.orb.iiop.ClientIIOPConnection connect
INFO: Connected to 10.20.0.8:49787 from local port 35910
**************************************************************************org.jacorb.orb.giop.RequestOutputStream@1be1a408
14-Aug-2013 3:54:04 PM org.jacorb.orb.iiop.ClientIIOPConnection close
INFO: Client-side TCP transport to 10.20.0.8:49787 closed.
org.omg.CORBA.MARSHAL: Server-side Exception: null
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
at org.jacorb.orb.SystemExceptionHelper.read(SystemExceptionHelper.java:222)
at org.jacorb.orb.ReplyReceiver.getReply(ReplyReceiver.java:456)
at org.jacorb.orb.Delegate._invoke_internal(Delegate.java:1418)
at org.jacorb.orb.Delegate.invoke_internal(Delegate.java:1187)
at org.jacorb.orb.Delegate.invoke(Delegate.java:1175)
at org.omg.CORBA.portable.ObjectImpl._invoke(ObjectImpl.java:80)
at NotificationIRPSystem.__NotificationIRPOperationsStub.attach_push(__NotificationIRPOperationsStub.java:288)
at AlarmClient.main(AlarmClient.java:43)
我不太确定发生了什么.我认为也许我要整理的对象与服务器所期望的不同?希望有人能提供帮助，如果您需要更多信息或我错过了什么，请告诉我.
I'm not really sure what's happening. I think maybe that the object I'm trying to marshal is different from what the server expects? I hope someone can help, let me know if you need more information or if I missed something.
更新 这是_NotificationIRPOperationsStub代码，其中包含attach_push
UPDATE This is the _NotificationIRPOperationsStub code which contains attach_push
public java.lang.String attach_push(java.lang.String manager_reference, int time_tick, java.lang.String[] notification_category_set, java.lang.String filter) throws NotificationIRPSystem.AlreadySubscribed,NotificationIRPSystem.Attach,NotificationIRPSystem.AtLeast\
OneNotificationCategoryNotSupported,NotificationIRPSystem.ParameterNotSupported,NotificationIRPSystem.InvalidParameter
{
while(true)
{
if(! this._is_local())
{
org.omg.CORBA.portable.InputStream _is = null;
org.omg.CORBA.portable.OutputStream _os = null;
try
{
_os = _request( "attach_push", true);
java.lang.String tmpResult10 = manager_reference;
_os.write_string( tmpResult10 );
_os.write_ulong(time_tick);
NotificationIRPConstDefs.NotificationCategorySetHelper.write(_os,notification_category_set);
java.lang.String tmpResult11 = filter;
_os.write_string( tmpResult11 );
System.out.println("**************************************************************************" + _os.toString());
_is = _invoke(_os);
java.lang.String _result = _is.read_string();
return _result;
}
catch( org.omg.CORBA.MARSHAL m){
m.printStackTrace();
return m.getStackTrace().getClassName();
}
catch( org.omg.CORBA.portable.RemarshalException _rx )
{
continue;
}
catch( org.omg.CORBA.portable.ApplicationException _ax )
{
String _id = _ax.getId();
try
{
if( _id.equals("IDL:3gppsa5.org/NotificationIRPSystem/AlreadySubscribed:1.0"))
{
throw NotificationIRPSystem.AlreadySubscribedHelper.read(_ax.getInputStream());
}
else
if( _id.equals("IDL:3gppsa5.org/NotificationIRPSystem/Attach:1.0"))
{
throw NotificationIRPSystem.AttachHelper.read(_ax.getInputStream());
}
else
if( _id.equals("IDL:3gppsa5.org/NotificationIRPSystem/AtLeastOneNotificationCategoryNotSupported:1.0"))
{
throw NotificationIRPSystem.AtLeastOneNotificationCategoryNotSupportedHelper.read(_ax.getInputStream());
}
else
if( _id.equals("IDL:3gppsa5.org/NotificationIRPSystem/ParameterNotSupported:1.0"))
{
throw NotificationIRPSystem.ParameterNotSupportedHelper.read(_ax.getInputStream());
}
else
if( _id.equals("IDL:3gppsa5.org/NotificationIRPSystem/InvalidParameter:1.0"))
{
throw NotificationIRPSystem.InvalidParameterHelper.read(_ax.getInputStream());
}
else{
throw new RuntimeException("Unexpected exception " + _id );
}
}
finally
{
try
{
_ax.getInputStream().close();
}
catch (java.io.IOException e)
{
throw new RuntimeException("Unexpected exception " + e.toString() );
}
}
}
finally
{
if (_os != null)
{
try
{
_os.close();
}
catch (java.io.IOException e)
{
throw new RuntimeException("Unexpected exception " + e.toString() );
}
}
this._releaseReply(_is);
}
}
else
{
org.omg.CORBA.portable.ServantObject _so = _servant_preinvoke( "attach_push", _opsClass );
if( _so == null )
continue;
_NotificationIRPOperationsOperations _localServant = (_NotificationIRPOperationsOperations)_so.servant;
java.lang.String _result;
try
{
_result = _localServant.attach_push(manager_reference,time_tick,notification_category_set,filter);
if ( _so instanceof org.omg.CORBA.portable.ServantObjectExt)
((org.omg.CORBA.portable.ServantObjectExt)_so).normalCompletion();
return _result;
}
catch (NotificationIRPSystem.AlreadySubscribed ex)
{
if ( _so instanceof org.omg.CORBA.portable.ServantObjectExt)
((org.omg.CORBA.portable.ServantObjectExt)_so).exceptionalCompletion(ex);
throw ex;
}
catch (NotificationIRPSystem.Attach ex)
{
if ( _so instanceof org.omg.CORBA.portable.ServantObjectExt)
((org.omg.CORBA.portable.ServantObjectExt)_so).exceptionalCompletion(ex);
throw ex;
}
catch (NotificationIRPSystem.AtLeastOneNotificationCategoryNotSupported ex)
{
if ( _so instanceof org.omg.CORBA.portable.ServantObjectExt)
((org.omg.CORBA.portable.ServantObjectExt)_so).exceptionalCompletion(ex);
throw ex;
}
catch (NotificationIRPSystem.ParameterNotSupported ex)
{
if ( _so instanceof org.omg.CORBA.portable.ServantObjectExt)
((org.omg.CORBA.portable.ServantObjectExt)_so).exceptionalCompletion(ex);
throw ex;
}
catch (NotificationIRPSystem.InvalidParameter ex)
{
if ( _so instanceof org.omg.CORBA.portable.ServantObjectExt)
((org.omg.CORBA.portable.ServantObjectExt)_so).exceptionalCompletion(ex);
throw ex;
}
catch (RuntimeException re)
{
if ( _so instanceof org.omg.CORBA.portable.ServantObjectExt)
((org.omg.CORBA.portable.ServantObjectExt)_so).exceptionalCompletion(re);
throw re;
}
catch (java.lang.Error err)
{
if ( _so instanceof org.omg.CORBA.portable.ServantObjectExt)
((org.omg.CORBA.portable.ServantObjectExt)_so).exceptionalCompletion(err);
throw err;
}
finally
{
_servant_postinvoke(_so);
}
}
}
}
谢谢.
更新#2
感谢Brian发布该版本的文档.我从那里拿走IDL，稍加调整便可以用objNotiServer调用attach_push.我的下一个问题是关于如何设置AlarmClient来接收这些通知.我的假设是可以调用orb.run()，然后在收到通知时，将在IRPManager对象中接收通知，对吗?
Thanks to Brian for posting that version of the document. I took the IDL from there, and with a minor adjustment I was able to call attach_push with my objNotiServer. My next question is about how I can set my AlarmClient up to receive these notifications. My assumption is that I can call orb.run() and then when notifications come in, I will receive them in my IRPManager object, is that right?
推荐答案
CORBA :: MARSHAL异常通常是由于以下原因之一而发生的:
CORBA::MARSHAL exceptions usually occur because of one of these reasons:
- 客户端和服务器之间的IDL不匹配(导致意外的有效负载差异)
- 不知道如何正确编组复杂但有效的有效载荷的糟糕ORB产品
由于ORB已经足够成熟，因此很少发生这种情况，因此如今#2的可能性确实很小.只要您在本世纪构建的客户端和服务器端都使用ORB产品，您可能就可以了.这就是原因1.
Reason #2 is really unlikely nowadays, as ORBs have matured enough that this rarely happens. As long as you're using ORB products on both the client and server side that were built in this century then you're probably ok. That leaves reason #1.
您正在调用的方法的IDL是(我认为)来自此文档，如下所示:
The IDL for the method you're calling is (I believe) from this document, and looks like this:
interface NotificationIRPOperations {
NotificationIRPConstDefs::SubscriptionId attach_push (
in Object manager_reference,
in long time_tick,
in NotificationCategorySet notification_category_set,
in string filter
)
raises (Attach, ParameterNotSupported, InvalidParameter, AlreadySubscribed,
AtLeastOneNotificationCategoryNotSupported);
请注意第一个参数，其类型为Object.但是，在您的代码中，您正在传递字符串.但是，IDL类型Object在Java中映射为org.omg.CORBA.Object，而不是String.我本来希望看到您通过objNotiServer代替该参数.
Note the first parameter, it's of type Object. However in your code, you're passing a string. However the IDL type Object maps to org.omg.CORBA.Object in Java, not to a String. I would have expected to see you pass objNotiServer instead for this parameter.
因此，或者您的IDL与服务器期望的不匹配(可能)，或者您的IDL编译器没有遵循基本的IDL到Java映射规则(不太可能).
So either your IDL is mismatched with what your server is expecting (likely), or your IDL compiler isn't following the basic IDL-to-Java mapping rules (unlikely).
无论哪种方式，那里都有难闻的气味.我不认为ORB会为您隐式调用ORB.string_to_object()，这样当服务器实际上期望使用字符串化的Object引用时，这将导致在网络上发送常规字符串.差别很细微，但这可能是服务器向您扔回MARSHAL的原因.
Either way, something smells bad there. I don't believe that the ORB will implicitly call ORB.string_to_object() for you, so that would lead to a regular string being sent on the network when the server is actually expecting a stringified Object reference. The difference is subtle but it might be the reason why the server is throwing a MARSHAL back at you.
因此，第一个调用端口应该是对用于构建客户端的IDL文件的检查.确保您要尝试调用的服务器具有正确的IDL.如果根本不匹配，则会发生MARSHAL异常，并且发生很多.
So your first port of call should be a check on the IDL file that you're using to build your client. Make sure that you've got the exact and correct IDL for the server you're trying to call. If there's any mismatch at all then MARSHAL exceptions will happen, and happen a lot.
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