RMI UnmarshalException
Hi Guys,
I currently have an application using RMI and every now and then receive the following error:
java.rmi.UnmarshalException: Error unmarshaling return; nested exception is:
java.net.SocketException: Connection reset
My RMI connection between the client and server is then disconnected. At the moment I have implemented
a heart beat type arrangement to know when the connection has died, and to reconnect it. This solution is just temporary until I am able to fix the real problem.
I have been doing alot of searching to try and find the problem but have been unsuccesful in finding the problem / solution. Seems many people get this kind of problem.
Can anyone help me out ?
Cheers ... Gregg.
Hi ,
Le' me give u some hints ................
@ Check the java.policy file for the permissions and make the changes.........where u need to add permissions....
permission java.net.SocketPermission "<hostname>:<portno>-", "listen, connect, accept, resolve";
and few more things.
@ An UnmarshalException can be thrown while unmarshalling the parameters or results of a remote method call if any of the following conditions occur: if an exception occurs while unmarshalling the call header if the protocol for the return value is invalid if a java.io.IOException occurs unmarshalling parameters (on the server side) or the return value (on the client side).
Did this solve ur problem.
Rave.
Similar Messages
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Java.rmi.UnmarshalException: skeleton class not found but required for clie
Hello everyone,
I am new to RMI and getting a strange exception. I am using Java 1.5.0_07 both on client and server. They are running on the same machine, the rmi registry is started inside the server application.
I am wondering why java complains about skeletons, I thought they are automatically created when using java 5.0?
Please have a look at the stacktrace below.
Thank you for your help.
Best Regards
Patric
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling call header; nested exception is:
java.rmi.UnmarshalException: skeleton class not found but required for client version
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javax.servlet.http.HttpServlet.service(HttpServlet.java:802)The full class path information that I can gather is as follows (some of the library path locations could be suspect...):
Class path: /edge/node3/hotfix::/edge/node3/current/lib/JMdsApi.jar:/edge/node3/current/lib/MemoryProfilingAgent.jar:/edge/node3/current/lib/T2common-2.6.0-SNAPSHOT.3200.jar:/edge/node3/current/lib/T2scripting-jython.jar:/edge/node3/current/lib/activation.jar:/edge/node3/current/lib/alib.jar:/edge/node3/current/lib/alibom.jar:/edge/node3/current/lib/ant.jar:/edge/node3/current/lib/authapi.jar:/edge/node3/current/lib/bbdlapi.jar:/edge/node3/current/lib/bcpg-jdk15-136.jar:/edge/node3/current/lib/bcprov-jdk15-136.jar:/edge/node3/current/lib/c3p0-0.9.1.2.jar:/edge/node3/current/lib/castor-1.1-codegen-anttask.jar:/edge/node3/current/lib/castor-1.1-codegen.jar:/edge/node3/current/lib/castor-1.1-xml.jar:/edge/node3/current/lib/castor-1.1.jar:/edge/node3/current/lib/colt-1.2.0.jar:/edge/node3/current/lib/common-annotations.jar:/edge/node3/current/lib/commons-beanutils.jar:/edge/node3/current/lib/commons-codec-1.3.jar:/edge/node3/current/lib/commons-collections-3.2.1.jar:/edge/node3/current/lib/commons-jexl-1.1.jar:/edge/node3/current/lib/commons-lang-2.3.jar:/edge/node3/current/lib/commons-logging-1.1.1.jar:/edge/node3/current/lib/commons-net-1.4.1.jar:/edge/node3/current/lib/dsn.jar:/edge/node3/current/lib/eagleapi.jar:/edge/node3/current/lib/ezmorph-1.0.3.jar:/edge/node3/current/lib/f2-loader-1.8.jar:/edge/node3/current/lib/fasttrade-boviewer-1.0.1.jar:/edge/node3/current/lib/hsqldb.jar:/edge/node3/current/lib/icu4j-3.4.4.jar:/edge/node3/current/lib/ivy.jar:/edge/node3/current/lib/janino.jar:/edge/node3/current/lib/janus-sdk-1.7.0.0.jar:/edge/node3/current/lib/jasypt-1.4.1.jar:/edge/node3/current/lib/javolution.jar:/edge/node3/current/lib/jcalendar-1.3.2.jar:/edge/node3/current/lib/jcl-over-slf4j-1.5.6.jar:/edge/node3/current/lib/jcommon-1.0.9.jar:/edge/node3/current/lib/jconn2.jar:/edge/node3/current/lib/jconn3-6.05-b26214.jar:/edge/node3/current/lib/jdom.jar:/edge/node3/current/lib/jfreechart-1.0.5.jar:/edge/node3/current/lib/jgroups-all.jar:/edge/node3/current/lib/jline.jar:/edge/node3/current/lib/jmkv123p1.jar:/edge/node3/current/lib/jna.jar:/edge/node3/current/lib/joda-time-1.5.2.jar:/edge/node3/current/lib/jscience.jar:/edge/node3/current/lib/json-lib-2.2.1-jdk15.jar:/edge/node3/current/lib/jul-to-slf4j-1.5.6.jar:/edge/node3/current/lib/junit.jar:/edge/node3/current/lib/jython.jar:/edge/node3/current/lib/log4j-1.2.15.jar:/edge/node3/current/lib/log4j-over-slf4j-1.5.6.jar:/edge/node3/current/lib/loggablePreparedStatement-1.6.jar:/edge/node3/current/lib/looks-2.1.4.jar:/edge/node3/current/lib/mailapi.jar:/edge/node3/current/lib/model-12021.jar:/edge/node3/current/lib/mysql-connector-java-5.1.7-bin.jar:/edge/node3/current/lib/opencsv-1.8.jar:/edge/node3/current/lib/rfa.jar:/edge/node3/current/lib/rspcore.jar:/edge/node3/current/lib/slf4j-api-1.5.6.jar:/edge/node3/current/lib/slf4j-log4j12-1.5.6.jar:/edge/node3/current/lib/smtp.jar:/edge/node3/current/lib/smtphandler-0.6.jar:/edge/node3/current/lib/spring-2.5.2.jar:/edge/node3/current/lib/statsvn.jar:/edge/node3/current/lib/swingx-0.9.3.jar:/edge/node3/current/lib/t2-12021.jar:/edge/node3/current/lib/testng-5.9-jdk15.jar:/edge/node3/current/lib/tibmsg.jar:/edge/node3/current/lib/tibrvj.jar:/edge/node3/current/lib/trove.jar:/edge/node3/current/lib/velocity-tools.jar:/edge/node3/current/lib/velocity.jar:/edge/node3/current/lib/xalan.jar:/edge/node3/current/lib/xerces.jar:/edge/node3/current/lib/patng/activeio-core-3.0.0-incubator.jar:/edge/node3/current/lib/patng/activemq-core-4.1.1.jar:/edge/node3/current/lib/patng/avalon-framework-4.1.3.jar:/edge/node3/current/lib/patng/backport-util-concurrent-2.2.jar:/edge/node3/current/lib/patng/binding-1.4.0.jar:/edge/node3/current/lib/patng/cglib-nodep-2.1_3.jar:/edge/node3/current/lib/patng/common-1.30.jar:/edge/node3/current/lib/patng/commons-cli-1.0.jar:/edge/node3/current/lib/patng/commons-configuration-1.2.jar:/edge/node3/current/lib/patng/commons-discovery-0.2.jar:/edge/node3/current/lib/patng/commons-math-1.1.jar:/edge/node3/current/lib/patng/concurrent-1.3.4.jar:/edge/node3/current/lib/patng/geronimo-j2ee-management_1.0_spec-1.0.jar:/edge/node3/current/lib/patng/geronimo-jms_1.1_spec-1.0.jar:/edge/node3/current/lib/patng/logkit-1.0.1.jar:/edge/node3/current/lib/patng/mina-core-1.0.1.jar:/edge/node3/current/lib/patng/mina-filter-ssl-1.0.1.jar:/edge/node3/current/lib/patng/mina-java5-1.0.1.jar:/edge/node3/current/lib/patng/mx4j-remote-3.0.1.jar:/edge/node3/current/lib/patng/mx4j-tools-3.0.1.jar:/edge/node3/current/lib/patng/org.apache.felix.framework-1.0.0.jar:/edge/node3/current/lib/patng/org.osgi.core-1.0.0.jar:/edge/node3/current/lib/patng/pat-dt-common-1.18.jar:/edge/node3/current/lib/patng/pat-sdt-1.18.jar:/edge/node3/current/lib/patng/patNg-api-1.27.1.jar:/edge/node3/current/lib/patng/patNg-server-aoc-1.21.jar:/edge/node3/current/lib/patng/patNg-server-common-1.21.jar:/edge/node3/current/lib/patng/patNg-server-session-manager-1.21.jar:/edge/node3/current/lib/patng/patNg-utils-1.27.1.jar:/edge/node3/current/lib/patng/qpid-b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Library path: /apps/jdk/1.6.0_13/linux/jre/lib/i386/server:/apps/jdk/1.6.0_13/linux/jre/lib/i386:/apps/jdk/1.6.0_13/linux/jre/../lib/i386::/edge/node3/current/lib:/home/eqdev/eqedgeuat/yourkit_7_5_11/yjp-7.5.11/bin/linux-x86-32:/edge/node3/current/lib:/home/eqdev/eqedgeuat/yourkit_7_5_11/yjp-7.5.11/bin/linux-x86-32:/usr/java/packages/lib/i386:/lib:/usr/lib -
RMI Problem -- java.rmi.UnmarshalException:
I am having a client and a server.... when i am trying to bring the client into server. but when i am doing it... i am getting an exception as below as...
java.rmi.UnmarshalException: Error unmarshaling return header; nested exception is:
java.io.EOFException
at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source)
at sun.rmi.server.UnicastRef.invoke(Unknown Source)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at java.rmi.Naming.lookup(Unknown Source)
at hsmsgui.rmtmgmt.RmtMgmtHandler.contactClient(RmtMgmtHandler.java:176)
at hsmsgui.display.AddClientWzd.onFinishBtnClicked(AddClientWzd.java:488)
at hsmsgui.display.AddClientWzd.actionPerformed(AddClientWzd.java:346)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.Dialog$1.run(Unknown Source)
at java.awt.Dialog$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Dialog.show(Unknown Source)
at hsmsgui.display.AddClientAction.actionPerformed(AddClientAction.java:38)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.io.EOFException
at java.io.DataInputStream.readByte(Unknown Source)
... 60 more
can any one help me out to solve this problem.......Thanks for ur reply...Now i' m getting the access denied problem..
I am able to create the rmi registry successfully on the server, Then Binding is also done successfully. but when i try to connect the client to the server the exception is thrown Please help me..
TEST - client PC name.
java.security.AccessControlException: access denied (java.net.SocketPermission TEST resolve)
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkConnect(Unknown Source)
at java.net.InetAddress.getAllByName0(Unknown Source)
at java.net.InetAddress.getAllByName0(Unknown Source)
at java.net.InetAddress.getAllByName(Unknown Source)
at java.net.InetAddress.getByName(Unknown Source)
at java.net.InetSocketAddress.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(Unknown Source)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(Unknown Source)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source)
at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source)
at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source)
at sun.rmi.server.UnicastRef.newCall(Unknown Source)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at java.rmi.Naming.lookup(Unknown Source)
at hsmsgui.rmtmgmt.RmtMgmtHandler.contactClient(RmtMgmtHandler.java:176)
at hsmsgui.display.AddClientWzd.onFinishBtnClicked(AddClientWzd.java:488)
at hsmsgui.display.AddClientWzd.actionPerformed(AddClientWzd.java:346)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.Dialog$1.run(Unknown Source)
at java.awt.Dialog$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Dialog.show(Unknown Source)
at hsmsgui.display.AddClientAction.actionPerformed(AddClientAction.java:38)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source) -
RMI UnmarshalException Occurs after some time
Hi,
I have a client server application that talks via rmi. My client saves data to a server or gets data by passing in parameters that include string, boolean and a Hashtable. The data is saved and retrieved many times. However, after some time, the RMI can't even find the method. That is, the client calls a method and I get a unmarshalling exception from the client, basically stating that it can't find the method.
Here is the method in my interface, the method in question is the override method, the getLast works fine all the time:
public interface Admin extends Remote
Hashtable getLast(Hashtable setLashtHash) throws RemoteException;
//override method can query or set a new data in the form of a hashtable. It return a Hashtable or null
Object override(boolean setNew, String ticker, boolean getOverrideHash,boolean getLast, boolean getPrevious,Hashtable newOverride) throws RemoteException;
Here's the implementation of override:
synchronized public Object override(boolean setNew, String ticker, boolean getOverrideHash,boolean getLast, boolean getPrevious,Hashtable newOverride) throws RemoteException
try{
if(setNew)
if(newOverride!=null)
System.out.println("Saving override hash, entries=" + newOverride.size());
overrideHash=newOverride;
else if(getOverrideHash)
if(overrideHash!=null)
System.out.println("Getting override hash entries=" + overrideHash.size());
return overrideHash;
else
if(getLast)
if(overrideHash==null)
System.out.println("override hash is null");
return null;
OverrideStruct os=(OverrideStruct)overrideHash.get(ticker);
if(os.last!=null)
System.out.println("Last price for ticker " + ticker + " is=" +os.last);
Float last=os.last;
return last;
return null;
else if(getPrevious)
if(overrideHash==null)
return null;
OverrideStruct os=(OverrideStruct)overrideHash.get(ticker);
if(os.previous!=null)
Float previous=os.previous;
return previous;
return null;
}catch(Exception e)
System.out.println("Unknown Exception caught in override function");
e.printStackTrace();
return null;
Here is the exception, please help.
java.rmi.ServerException: RemoteException occurred in server thread; nested exce
ption is:
java.rmi.UnmarshalException: invalid method hash
java.rmi.UnmarshalException: invalid method hash
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Unknow
n Source)
at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source)
at sun.rmi.server.UnicastRef.invoke(Unknown Source)
at AdminImpl_Stub.override(Unknown Source)
at StocksTable$12.run(stockstable.java:481)
Please help,
Thanks SteveBy the way, this is how my server calls the client:
Hashtable otable=(Hashtable)a1.override(false,new String(""),true,false,false,new Hashtable()); -
RMI: UnmarshalException, can't find method after some time.
Hi,
I have a client server application that talks via rmi. My client saves data to a server or gets data by passing in parameters that include string, boolean and a Hashtable. The data is saved and retrieved many times. However, after some time, the RMI can't even find the method. That is, the client calls a method and I get a unmarshalling exception from the client, basically stating that it can't find the method.
Here is the method in my interface, the method in question is the override method, the getLast works fine all the time:
public interface Admin extends Remote
Hashtable getLast(Hashtable setLashtHash) throws RemoteException;
//override method can query or set a new data in the form of a hashtable. It return a Hashtable or null
Object override(boolean setNew, String ticker, boolean getOverrideHash,boolean getLast, boolean getPrevious,Hashtable newOverride) throws RemoteException;
Here's the implementation of override:
synchronized public Object override(boolean setNew, String ticker, boolean getOverrideHash,boolean getLast, boolean getPrevious,Hashtable newOverride) throws RemoteException
try{
if(setNew)
if(newOverride!=null)
System.out.println("Saving override hash, entries=" + newOverride.size());
overrideHash=newOverride;
else if(getOverrideHash)
if(overrideHash!=null)
System.out.println("Getting override hash entries=" + overrideHash.size());
return overrideHash;
else
if(getLast)
if(overrideHash==null)
System.out.println("override hash is null");
return null;
OverrideStruct os=(OverrideStruct)overrideHash.get(ticker);
if(os.last!=null)
System.out.println("Last price for ticker " + ticker + " is=" +os.last);
Float last=os.last;
return last;
return null;
else if(getPrevious)
if(overrideHash==null)
return null;
OverrideStruct os=(OverrideStruct)overrideHash.get(ticker);
if(os.previous!=null)
Float previous=os.previous;
return previous;
return null;
}catch(Exception e)
System.out.println("Unknown Exception caught in override function");
e.printStackTrace();
return null;
Here is the exception, please help. Does anyone know why the exception is "invalid method hash"? I don't understand why it's saying that, I am calling method override(....).
java.rmi.ServerException: RemoteException occurred in server thread; nested exce
ption is:
java.rmi.UnmarshalException: invalid method hash
java.rmi.UnmarshalException: invalid method hash
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Unknow
n Source)
at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source)
at sun.rmi.server.UnicastRef.invoke(Unknown Source)
at AdminImpl_Stub.override(Unknown Source)
at StocksTable$12.run(stockstable.java:481)
Please help,
Thanks SteveBy the way, this is how my server calls the client:
Hashtable otable=(Hashtable)a1.override(false,new String(""),true,false,false,new Hashtable()); -
RMI "UnmarshalException" issue
Hi,
I am doing a sample RMI application in the following step by step process but in the *8th* step I am getting exception so please kindly resolve my issue.
Step-1: creating Service interface
AddServiceInterface.java
====================
import java.rmi.*;
public interface AddServiceInterface extends Remote
public int add(int a, int b) throws RemoteException;
Step-2: Compiling Service interface
D:\BAJI\Programs\JAVA\rmi\rmi_server>javac AddServiceInterface.java
D:\BAJI\Programs\JAVA\rmi\rmi_server>
Step-3: creating the Service interface implementation class
AddService.java
============
import java.rmi.*;
import java.rmi.server.*;
public class AddService extends UnicastRemoteObject implements AddServiceInterface
public AddService() throws Exception
public int add(int a, int b) throws RemoteException
return (a+b);
Step-4: Compiling the Service interface implementation class
D:\BAJI\Programs\JAVA\rmi\rmi_server>javac AddService.java
D:\BAJI\Programs\JAVA\rmi\rmi_server>
Step-5: Start the RMI service
1)openned a new command prompt and typed the following command
2)d:\> rmiregistry
Step-6: Create stub and skeleton classes
D:\BAJI\Programs\JAVA\rmi\rmi_server>rmic AddService
D:\BAJI\Programs\JAVA\rmi\rmi_server>
Step-7: Create RMI Server Application which export the Server object into Naming service
RMIServerApp.java
===============
import java.rmi.*;
public class RMIServerApp
public static void main(String[] args) throws Exception
AddServiceInterface asi = new AddService();
Naming.bind("rmi://localhost/as",asi);
System.out.println("\n\n***************** Registored into Naming Service ****************\n\n");
Step-8: Compiling & execute
D:\BAJI\Programs\JAVA\rmi\rmi_server>javac RMIServerApp.java
D:\BAJI\Programs\JAVA\rmi\rmi_server>java RMIServerApp
Exception in thread "main" java.rmi.ServerException: RemoteException occurred in
server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested excep
tion is:
java.lang.ClassNotFoundException: AddServiceInterface
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:385
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:240)
at sun.rmi.transport.Transport$1.run(Transport.java:153)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:4
66)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport
.java:707)
at java.lang.Thread.run(Thread.java:595)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Stream
RemoteCall.java:247)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:
223)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:343)
at sun.rmi.registry.RegistryImpl_Stub.bind(Unknown Source)
at java.rmi.Naming.bind(Naming.java:111)
at RMIServerApp.main(RMIServerApp.java:8)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested ex
ception is:
java.lang.ClassNotFoundException: AddServiceInterface
at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:375
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:240)
at sun.rmi.transport.Transport$1.run(Transport.java:153)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:4
66)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport
.java:707)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.ClassNotFoundException: AddServiceInterface
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
at sun.rmi.server.LoaderHandler.loadProxyInterfaces(LoaderHandler.java:7
07)
at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:651)
at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:588)
at java.rmi.server.RMIClassLoader$2.loadProxyClass(RMIClassLoader.java:6
28)
at java.rmi.server.RMIClassLoader.loadProxyClass(RMIClassLoader.java:294
at sun.rmi.server.MarshalInputStream.resolveProxyClass(MarshalInputStrea
m.java:238)
at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1500)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1463)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
699)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
... 9 more
Step-9: Create the client object file
RMIClient.java
===========
import java.rmi.*;
public class RMIClient
public static void main(String[] args) throws Exception
AddServiceInterface asi = (AddServiceInterface)Naming.lookup("rmi://localhost/as");
System.out.println(asi.add(10,20));
Thanks & Regards,
BSKThe registry cannot find the class named in the exception.
-
hai,
I am facing a problem in rmi , when running my RMI server program, I am a beginner to this area, earlier it was working and i got the output, i didnt change anything, i used three windows to test my program, one for rmiregistry, another for running the server and other for running the client.
But when i execute server, after two seconds i got the following error,
Trouble java.rmi.UnmarshalException: Error unmarshaling return; nested exception is:
java.net.SocketException: Connection reset
please help me to solve this.
rajesh kumarI am a beginner to this area, earlier
it was working and i got the output, i didnt change
anythingevidently, you did, or it would still be working -
RemoteException: java.rmi.UnmarshalException in jdk 1.4.2
i'm implementing an RMI over the jdk 1.4.2 (can't do it in the 1.5 or 1.6) i've seen this topic [http://forum.java.sun.com/thread.jspa?threadID=370196&messageID=1808449] but it didn't help me, or i'm doing something wrong...
i know the RMI code is ok because it runs on java 1.6 (with the automatic generation of stubs and skeletons) but when i change the platform to 1.4 it throws the exception:
RemoteException: java.rmi.UnmarshalException: error unmarshalling return; nested exception is:
java.lang.ClassNotFoundException: servidor.MensageiroImpl_Stub
the VM is configured to use the -Djava.security.policy=C:\Projecto\Policy\permissions.policy both in the client and server
please help me :S i've been burning my head with this for 3 days
i leave my code here:
The interface:
package rmiinterface;
import java.rmi.Remote;
import java.rmi.RemoteException;
public interface Mensageiro extends Remote {
public void sendMsg(String msg) throws RemoteException;
public String readMsg() throws RemoteException;
}the implementation:
package servidor;
import rmiinterface.Mensageiro;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
public class MensageiroImpl extends UnicastRemoteObject implements Mensageiro {
public MensageiroImpl() throws RemoteException {
super();
public void sendMsg(String msg) throws RemoteException {
System.out.println(msg);
public String readMsg() throws RemoteException {
return "This is not a Hello World! message";
}the server:
package servidor;
import rmiinterface.Mensageiro;
import java.rmi.Naming;
import java.rmi.RMISecurityManager;
public class MensageiroServer {
public MensageiroServer() {
System.setSecurityManager(new RMISecurityManager());
try {
Mensageiro m = new MensageiroImpl();
java.rmi.registry.LocateRegistry.createRegistry(1099);
System.out.println("RMI registry successfully initiated");
Naming.rebind("MensageiroService", m);
System.out.println("Servidor Online");
} catch (Exception e) {
System.out.println("Trouble: " + e.getMessage());
public static void main(String[] args) {
new MensageiroServer();
}and the client:
package cliente;
import rmiinterface.Mensageiro;
import java.rmi.RMISecurityManager;
import java.rmi.Naming;
import java.rmi.RemoteException;
import java.rmi.NotBoundException;
import java.net.MalformedURLException;
public class MensageiroClient {
public MensageiroClient() {
public static void main(String args[]) {
System.setSecurityManager(new RMISecurityManager());
try {
Mensageiro m = (Mensageiro) Naming.lookup("//localhost/MensageiroService");
System.out.println(m.readMsg());
m.sendMsg("Hello World!");
} catch (MalformedURLException e) {
System.out.println();
System.out.println("MalformedURLException: " + e.toString());
} catch (RemoteException e) {
System.out.println();
System.out.println("RemoteException: " + e.toString());
} catch (NotBoundException e) {
System.out.println();
System.out.println("NotBoundException: " + e.toString());
} catch (Exception e) {
System.out.println();
System.out.println("Exception: " + e.toString());
}NOTE: my IDE is Netbeans 6.1. and the client and server are in diffrent projects
thanks in advance
Best Regards,
Carlos Daniel Ribeirothe stub and the skeleton are being generated, and they are there, in the server project! i don't know why the class defs for the stub filearen't downloded by the client project...I don't know why you think they will be downloaded. They won't be, unless you're using the codebase feature. The client needs the remote interface and the stub on its classpath, and all classes that the remote interface depends on, and so on recursively until closure. You have to do something about that.
It works under 1.6 because it doesn't need the stub at all. -
New @ RMI need help with java.rmi.UnmarshalException: error unmarshalling
Hi @ all out there,
I'm new with Java RMI and have to write a EventSystem for an college project where clients can subscribe to a topic and get notified when someone publishes a message to the subscribed topic.
At server-side I have a class called EventSystem that provides methods for subscribing and unsubscribing from topics, and also for posting messages (for publishers).
To subscribe i thought that the client must specify the topic and also itself ( means that a client calls in this way: obj.subscribe("mytopic", this).
The EventSystem handles a list of all clients, and whenever a new message is posted it goes trough all clients and invokes the handleMessage(String msg) method that all Clients have to provide.
On my local machine without RMi this concept works just great.
I now tried to get it working using RMI , but I get the following Exception when starting the client (the server starts fine) :
Looking up for rmiregistry at 138.232.248.22:1099
Subscriber exception:
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.io.InvalidClassException: SubscriberImpl; SubscriberImpl; class invalid for deserialization
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:336)
at sun.rmi.transport.Transport$1.run(Transport.java:159)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:255)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:233)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:142)
at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(RemoteObjectInvocationHandler.java:178)
at java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvocationHandler.java:132)
at $Proxy0.subscribe(Unknown Source)
at SubscriberImpl.main(SubscriberImpl.java:48)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.io.InvalidClassException: SubscriberImpl; SubscriberImpl; class invalid for deserialization
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:293)
at sun.rmi.transport.Transport$1.run(Transport.java:159)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.io.InvalidClassException: SubscriberImpl; SubscriberImpl; class invalid for deserialization
at java.io.ObjectStreamClass.checkDeserialize(ObjectStreamClass.java:713)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1733)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at sun.rmi.server.UnicastRef.unmarshalValue(UnicastRef.java:306)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:290)
... 9 more
Caused by: java.io.InvalidClassException: SubscriberImpl; class invalid for deserialization
at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:587)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1583)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732)
... 13 moreI googled now for 2 hours but can't resolve the problem alone. As far as I can understand I have to serialize Objects that I want to send to the server, right?
So how can i do this? I've never used serialization till now.
any ideas how to solve this problem?
greets from italy and sorry for my very weak english
bd_italyA class has been modified after deployment. Stop the Registry, clean, recompile, and redeploy.
-
JSP client in RMI system - java.rmi.UnmarshalException: error unmarshalling
Hi,
Im developing a login part for a distributed airline reservation system using JSP as the client but while executing the jsp, the error that is being catched is :
java.rmi.UnmarshalException: error unmarshalling return; nested exception is: java.lang.ClassNotFoundException: AirlineImpl_Stub (no security manager: RMI class loader disabled)
Here are my codes:
//Interface - Airline.java
package Air;
import java.rmi.*;
public interface Airline extends Remote
public int CheckUname(String username) throws RemoteException;
}//implementation - AirlineImpl.java
import java.net.*;
import java.io.*;
import java.sql.*;
import java.rmi.*;
import java.rmi.server.UnicastRemoteObject;
public class AirlineImpl extends UnicastRemoteObject implements Airline
public AirlineImpl() throws RemoteException
super();
public int CheckUname(String username) throws RemoteException
try
int UnameCount = 0;
String xxx = "eaglebeta";
if(username.equals(xxx)
UnameCount++;
return UnameCount;
catch (Exception e3)
System.out.println("Error: " + e3);
return 0;
}//Server - AirlineServer.java
import java.rmi.*;
import java.rmi.server.UnicastRemoteObject;
public class AirlineServer
public static void main(String arg[])
try
Airline myAirline = new AirlineImpl();
Naming.rebind("Airline", myAirline);
System.out.println();
System.out.println("************************************");
System.out.println(" >>> Airline Reservation System <<< ");
System.out.println(" >>> Server is Listening! <<< ");
System.out.println("************************************");
System.out.println();
catch (RemoteException e)
//System.out.println("Error: " + e);
System.out.println("RMI Registry is not active!");
System.out.println("Activate RMI Registry and retry!");
System.out.println("Bye bye, exiting...");
catch (java.net.MalformedURLException e)
//System.out.println("URL Error: "+ e);
System.out.println("URL Malformed!");
System.out.println("Bye bye, exiting...");
}//JSP client - newuser.jsp
<%@ page contentType="text/html; charset=iso-8859-1" language="java" import="java.sql.*" errorPage="" %>
<%@ page import="java.rmi.*, javax.servlet.*" %>
<%@ page import="java.util.*, java.lang.*, java.io.*, Air.Airline" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body bgcolor="#99CCFF">
<%
Object Airline = null;
try
Airline Air = (Airline)Naming.lookup("rmi://localhost/Airline");
String Name = "eaglebeta";
if(Air.CheckUname(Name)>0)
%>
Username already exists, choose another name
<%
else
%>
<%=Name%>
<%
catch (Exception e1)
%>
<%=e1%>
<%
%>
</body>
</html>The server, implementation, interface and stub are in a folder named "Airline Server" located on my desktop.
The interface and stub again are in another folder named "Air" located in the "classes\Air" directory which is located in the tomcat 5.5 installation directory!
The JSP client is located in the "Root" folder in the tomcat 5.5 installation derectory!
1. I start the registry in the "Airline Server" folder by typing rmiregistry
2. Load the Airline Server - java AirlineServer
3. Call the jsp - http://localhost/newuser.jsp
And i get the following error:
java.rmi.UnmarshalException: error unmarshalling return; nested exception is: java.lang.ClassNotFoundException: AirlineImpl_Stub (no security manager: RMI class loader disabled)
Please help me to solve this problem!When I am including security manager in my JSP code, the browser just get blank without any display
if(System.getSecurityManager() == null)
System.setProperty("java.security.policy", "java.policy");
System.setSecurityManager(new RMISecurityManager());
}Please, someone solve my problem! Im realy stuck and I don't know how to proceed! Provide me with a solution or any tutorial that would help me... -
Java.rmi.UnmarshalException: Error unmarshaling return header
Hi,
We are running an RMI server instance to serve data ( from memory) to clients. It works fine if fewer number of inquiries goes in. But when the number of inquiries are larger, I am getting some exceptions at the client side. The server crashes without throwing any exceptions. Following are the exceptions received at client side:
java.rmi.UnmarshalException: Error unmarshaling return header; nested exception is:
java.net.SocketException: Connection reset
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:203)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:133)
at com.emf1.dataserver.KeyFrequencyKeeper_Stub.getDUNSCounts(Unknown Source)
at com..match.KeyFrequencyKeeperProxy.getKeyKQSs(KeyFrequencyKeeperProxy.java:307)
at com.emf1.match.KeyGenerator.generateKeys(KeyGenerator.java:453)
at com.emf1.match.InquiryProcessor.run(InquiryProcessor.java:870)
at java.lang.Thread.run(Thread.java:534)
Caused by: java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:168)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:183)
at java.io.BufferedInputStream.read(BufferedInputStream.java:201)
at java.io.DataInputStream.readByte(DataInputStream.java:331)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:189)
... 6 more
The period of time, the server keeps on running (before it crashes) is also not the same. Sometimes it works fine without any problem. But most of the time the server crashes after processing some records.
I don't know why this is happening.
Please help...
Thanks in advance..I have this error too when I running my rmi server site program.
I am running it in Linux Environment.
Anyone got any idea about this? -
"java.rmi.UnmarshalException: error unmarshalling" at Applet with RMI comm.
Hello,
I am trying to make an Applet work with an RMI server, but i keep getting the same exception again and again whatever i do.
More specifically, i get the following :
java.rmi.UnmarshalException: error unmarshalling return; nested exception is:
java.net.MalformedURLException: unknown protocol: c
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at server.ClientDemo.initGUI(ClientDemo.java:100)
at server.ClientDemo.<init>(ClientDemo.java:85)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at sun.applet.AppletPanel.createApplet(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.net.MalformedURLException: unknown protocol: c
at java.net.URL.<init>(Unknown Source)
at java.net.URL.<init>(Unknown Source)
at java.net.URL.<init>(Unknown Source)
at sun.rmi.server.LoaderHandler.pathToURLs(Unknown Source)
at sun.rmi.server.LoaderHandler.loadProxyClass(Unknown Source)
at java.rmi.server.RMIClassLoader$2.loadProxyClass(Unknown Source)
at java.rmi.server.RMIClassLoader.loadProxyClass(Unknown Source)
at sun.rmi.server.MarshalInputStream.resolveProxyClass(Unknown Source)
at java.io.ObjectInputStream.readProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
... 13 more
The exeption is thrown at the following line :
remoteReference = (RMIServer) registry.lookup(RMIServer.REGISTRY_NAME);
This is the code of the server which seems to be running ok:
if(System.getSecurityManager()==null)
System.setSecurityManager(new SecurityManager());
registry = LocateRegistry.createRegistry(1099);
RMIServer sr=(RMIServer) UnicastRemoteObject.exportObject(new ServerDemo(),1099);
registry.rebind(RMIServer.REGISTRY_NAME, sr);
and the client:
registry = LocateRegistry.getRegistry("localhost");
remoteReference = (RMIServer) registry.lookup(RMIServer.REGISTRY_NAME);
Thank you in advance
Alex
Forgot to mention that i am setting the security policy and codebase programmatically:
System.setProperty("java.security.policy","C:\\Users\\Alex\\workspace\\Demo\\grantall.policy");
System.setProperty("java.rmi.server.codebase","C:\\Users\\Alex\\workspace\\Demo\\bin");
Edited by: Alkon on May 15, 2008 4:31 PMI edited the code that sets the security and i am now getting the following error, again at the lookup:
java.rmi.UnmarshalException: Error unmarshaling return header; nested exception is:
java.io.EOFException
at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source)
at sun.rmi.server.UnicastRef.invoke(Unknown Source)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at server.ClientDemo.initGUI(ClientDemo.java:101)
at server.ClientDemo.<init>(ClientDemo.java:91)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at sun.applet.AppletPanel.createApplet(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.EOFException
at java.io.DataInputStream.readByte(Unknown Source)
... 15 more -
Java.rmi.UnmarshalException:error
hi,
A rmi program does not work on my pc but it worked on others pc there are three programs ie RMIServer.java which is the server application ,RMIClient.java which is the client application and RMIInterface.java which has two methods which are remote all these programs gets compiled but while running it from the dos prompt it gives these errors:
RemoteException occured in serverthread;nested exception is:java.rmi.UnmarshalException:error unmarshalling arguments;nested exception is:java.lang.ClassNotFoundException:RMIServer_stub
what is the problem how does it work on others pc and not on mine how should i handle these exception what are the reasons for its occurrance please helpIt might help to start the rmiregistry from the directory where your class files are stored.
In this case the rmiregistry adds its working directory to its codebase.
Just keep in mind that the rmiregistry works in a similar fashion to the javac compiler & needs to be able to find the _Stub & _Skel class files. -
Java.rmi.UnmarshalException: error unmarshalling arguments;
Hi!
I'm a newbe with rmi, and I try to use a test program, from Thinking in Java:
ITiempoPerfecto.java
package c15.rmi;
import java.rmi.*;
interface ITiempoPerfecto extends Remote {
long obtenerTiempoPerfecto() throws RemoteException;
TiempoPerfecto.java
package c15.rmi;
import java.rmi.*;
import java.rmi.server.*;
import java.rmi.registry.*;
import java.net.*;
public class TiempoPerfecto extends UnicastRemoteObject implements ITiempoPerfecto {
public long obtenerTiempoPerfecto () throws RemoteException {
return System.currentTimeMillis();
public TiempoPerfecto() throws RemoteException {
super();
public static void main(String[] args) throws Exception {
System.setSecurityManager(new RMISecurityManager());
TiempoPerfecto tp=new TiempoPerfecto();
Naming.bind("//localhost/TiempoPerfecto",tp);
System.out.println("Preparado para dar la hora");
}and
MostrarTiempoPerfecto.java
package c15.rmi;
import java.rmi.*;
import java.rmi.registry.*;
public class MostrarTiempoPerfecto {
public static void main(String[] args) throws Exception {
System.setSecurityManager( new RMISecurityManager());
ITiempoPerfecto t=(ITiempoPerfecto)Naming.lookup("//localhost/TiempoPerfecto");
for (int i=0;i<10;i++)
System.out.println("Tiempo perfecto: "+t.obtenerTiempoPerfecto());
}I compile all the files normally.
Later I do:
rmiregistry &
rmic c15.rmi.TiempoPerfecto(This only generate the file TiempoPerfecto_Stub.class, it's ok?)
Without warnings or errors. But when I try to create a server object
java c15/rmi/TiempoPerfectoI obtain this:
Exception in thread "main" java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: c15.rmi.TiempoPerfecto_Stub
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:385)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:240)
at sun.rmi.transport.Transport$1.run(Transport.java:153)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
at java.lang.Thread.run(Thread.java:595)
.......What is the mistake? What may I do to run this programs?
Thank you!You must change your current directory to your class path (EX: java c15/rmi/TiempoPerfecto) then execute command remiregistry.
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Calling a service through the EJB results in java.rmi.UnmarshalException
I have created a service on WLAI that does a simple query against a table (inventory
count by product ID). I have also created a command line class to call this service,
provide the correct XML schema input, and wait for a returning XML response.
The class compiles fine, but at runtime I am hitting a java.rmi.UnmarshalException,
with a nested exception of a java.lang.ClassNotFoundException on the class com.bea.wlai.client.bean.ApplicationViewBeanEOImpl_WLStub.
However, I am positive this class is in the classpath on the remote computer
running WLAI in the %INTEGRATION_HOME%\applinteg\lib\WLAIlib.jar file.
I have been told that RMI calls run off a separate classpath, and that may be
why this class cannot be found. However, I am not familiar with such situations.
Any ideas or thoughts would be greatly appreciated. Please respond to this thread
with any thoughts or if you need any more information. Thanks.
Dan KimMaybe u must cast appMod to the generated class 'TestbcModuleEJBClient', in the automatically generated client project, instead of 'TestbcModule', that's only an interface. In this way appMod should find the implementation of your methods, and not only the declaration. That is:
appMod = (TestbcModuleEJBClient) home.create ();
Christian T.
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