I have a java non-web application that programmatically starts Jetty server to give API access to it. The communication between them are done via RMI. It all works fine until I start Tomcat that has no any relation to this project. If Tomcat is running, then I am getting the following exception while trying to start the application:
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: ua.cn.stu.datalink.rmi.AcmRemoteService (no security manager: RMI class loader disabled)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:420)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:268)
at sun.rmi.transport.Transport$1.run(Transport.java:200)
at sun.rmi.transport.Transport$1.run(Transport.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$254(TCPTransport.java:683)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$$Lambda$1/351702438.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:276)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:253)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:379)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at ua.cn.stu.datalink.acmserver.rmi.AcmRemoteServiceImpl.main(AcmRemoteServiceImpl.java:107)
at ua.cn.stu.datalink.acmserver.rmi.AcmRemoteServiceImpl$2.run(AcmRemoteServiceImpl.java:138)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: ua.cn.stu.datalink.rmi.AcmRemoteService (no security manager: RMI class loader disabled)
at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:410)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:268)
at sun.rmi.transport.Transport$1.run(Transport.java:200)
at sun.rmi.transport.Transport$1.run(Transport.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$254(TCPTransport.java:683)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$$Lambda$1/351702438.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
... 1 more
Caused by: java.lang.ClassNotFoundException: ua.cn.stu.datalink.rmi.AcmRemoteService (no security manager: RMI class loader disabled)
at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:556)
at java.rmi.server.RMIClassLoader$2.loadProxyClass(RMIClassLoader.java:646)
at java.rmi.server.RMIClassLoader.loadProxyClass(RMIClassLoader.java:311)
at sun.rmi.server.MarshalInputStream.resolveProxyClass(MarshalInputStream.java:255)
at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1559)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1515)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1774)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
... 16 more
It seems like the problem lies here - ua.cn.stu.datalink.rmi.AcmRemoteService (no security manager: RMI class loader disabled)
But why starting Tomcat disables RMI class loader?
You must be conditionally starting a registry, that doesn't start if one is running anyway, and Tomcat is starting its own. So when you bind, you're binding to Tomcat's registry, which doesn't have that class available, so it fails.
Related
I have a problem when I try to start my ofbiz-application. I ran ant configure and ant clean build. But when I try to execute the startofbiz.sh-script I get this exception:
2017-08-21 14:00:20,614 (main) [ GenericDispatcher.java:69 :INFO ] Creating new dispatcher [RMIDispatcher] (main)
org.ofbiz.base.start.StartupException: Cannot start() org.ofbiz.service.rmi.RmiServiceContainer (Unable to bind RMIDispatcher to RMI on //host[127.0.0.1]:port[1099]/name[RMIDispatcher] - with remote=RemoteDispatcherImpl[UnicastServerRef2 [liveRef: [endpoint:[10.202.100.143:53479,org.ofbiz.service.rmi.socket.ssl.SSLServerSocketFactory#28daffb4,org.ofbiz.service.rmi.socket.ssl.SSLClientSocketFactory#74485fa2](local),objID:[2a32fb17:15e04aa3f7e:-7fff, 5866446068611712226]]]] (RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: org.ofbiz.service.rmi.RemoteDispatcherImpl_Stub (no security manager: RMI class loader disabled)))
at org.ofbiz.base.container.ContainerLoader.start(ContainerLoader.java:232)
at org.ofbiz.base.start.Start.startStartLoaders(Start.java:363)
at org.ofbiz.base.start.Start.start(Start.java:338)
at org.ofbiz.base.start.Start.main(Start.java:140)
org.ofbiz.base.container.ContainerException: Unable to bind RMIDispatcher to RMI on //host[127.0.0.1]:port[1099]/name[RMIDispatcher] - with remote=RemoteDispatcherImpl[UnicastServerRef2 [liveRef: [endpoint:[10.202.100.143:53479,org.ofbiz.service.rmi.socket.ssl.SSLServerSocketFactory#28daffb4,org.ofbiz.service.rmi.socket.ssl.SSLClientSocketFactory#74485fa2](local),objID:[2a32fb17:15e04aa3f7e:-7fff, 5866446068611712226]]]] (RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: org.ofbiz.service.rmi.RemoteDispatcherImpl_Stub (no security manager: RMI class loader disabled))
at org.ofbiz.service.rmi.RmiServiceContainer.start(RmiServiceContainer.java:142)
at org.ofbiz.base.container.ContainerLoader.start(ContainerLoader.java:230)
at org.ofbiz.base.start.Start.startStartLoaders(Start.java:363)
at org.ofbiz.base.start.Start.start(Start.java:338)
at org.ofbiz.base.start.Start.main(Start.java:140)
Caused by: java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: org.ofbiz.service.rmi.RemoteDispatcherImpl_Stub (no security manager: RMI class loader disabled)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:419)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:267)
at sun.rmi.transport.Transport$2.run(Transport.java:202)
at sun.rmi.transport.Transport$2.run(Transport.java:199)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:198)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:567)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.access$400(TCPTransport.java:619)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$1.run(TCPTransport.java:684)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$1.run(TCPTransport.java:681)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:681)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
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:359)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at java.rmi.Naming.rebind(Naming.java:160)
at org.ofbiz.service.rmi.RmiServiceContainer.start(RmiServiceContainer.java:140)
... 4 more
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: org.ofbiz.service.rmi.RemoteDispatcherImpl_Stub (no security manager: RMI class loader disabled)
at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:409)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:267)
at sun.rmi.transport.Transport$2.run(Transport.java:202)
at sun.rmi.transport.Transport$2.run(Transport.java:199)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:198)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:567)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.access$400(TCPTransport.java:619)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$1.run(TCPTransport.java:684)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$1.run(TCPTransport.java:681)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:681)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: org.ofbiz.service.rmi.RemoteDispatcherImpl_Stub (no security manager: RMI class loader disabled)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:393)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:185)
at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:637)
at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:264)
at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:214)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1612)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
... 17 more
org.ofbiz.base.container.ContainerException: Unable to bind RMIDispatcher to RMI on //host[127.0.0.1]:port[1099]/name[RMIDispatcher] - with remote=RemoteDispatcherImpl[UnicastServerRef2 [liveRef: [endpoint:[10.202.100.143:53479,org.ofbiz.service.rmi.socket.ssl.SSLServerSocketFactory#28daffb4,org.ofbiz.service.rmi.socket.ssl.SSLClientSocketFactory#74485fa2](local),objID:[2a32fb17:15e04aa3f7e:-7fff, 5866446068611712226]]]] (RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: org.ofbiz.service.rmi.RemoteDispatcherImpl_Stub (no security manager: RMI class loader disabled))
at org.ofbiz.service.rmi.RmiServiceContainer.start(RmiServiceContainer.java:142)
at org.ofbiz.base.container.ContainerLoader.start(ContainerLoader.java:230)
at org.ofbiz.base.start.Start.startStartLoaders(Start.java:363)
at org.ofbiz.base.start.Start.start(Start.java:338)
at org.ofbiz.base.start.Start.main(Start.java:140)
Caused by: java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: org.ofbiz.service.rmi.RemoteDispatcherImpl_Stub (no security manager: RMI class loader disabled)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:419)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:267)
at sun.rmi.transport.Transport$2.run(Transport.java:202)
at sun.rmi.transport.Transport$2.run(Transport.java:199)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:198)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:567)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.access$400(TCPTransport.java:619)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$1.run(TCPTransport.java:684)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$1.run(TCPTransport.java:681)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:681)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
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:359)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at java.rmi.Naming.rebind(Naming.java:160)
at org.ofbiz.service.rmi.RmiServiceContainer.start(RmiServiceContainer.java:140)
... 4 more
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: org.ofbiz.service.rmi.RemoteDispatcherImpl_Stub (no security manager: RMI class loader disabled)
at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:409)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:267)
at sun.rmi.transport.Transport$2.run(Transport.java:202)
at sun.rmi.transport.Transport$2.run(Transport.java:199)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:198)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:567)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.access$400(TCPTransport.java:619)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$1.run(TCPTransport.java:684)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$1.run(TCPTransport.java:681)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:681)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: org.ofbiz.service.rmi.RemoteDispatcherImpl_Stub (no security manager: RMI class loader disabled)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:393)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:185)
at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:637)
at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:264)
at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:214)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1612)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
... 17 more
java.lang.Exception: Error during start.
at org.ofbiz.base.start.Start.start(Start.java:342)
at org.ofbiz.base.start.Start.main(Start.java:140)
The RemoteDispatcherImpl_Stub-class is not missing. I found it at the correct position, but I could not find a .java-file with the same name.
Building and configuring the project works just fine. Only when executing startpfbiz.sh errors occure.
I've been looking for a solution in many forums and nothing worked for me. Does anyone of you have any ideas what the problem is?
This is first time that I use RMI, and this the main that I wrote:
public class Main {
public static void main(String[] args)
{
try {
String name = "Server";
ServerInterface server = new ServerRMI(0,new Executor());
ServerInterface stub =
(ServerInterface) UnicastRemoteObject.exportObject(server, 0);
Registry registry = LocateRegistry.getRegistry();
registry.rebind(name, stub);
System.out.println("ServerRMI bound");
} catch (Exception e) {
System.err.println("ServerRMI exception:");
e.printStackTrace();
}
}
}
I already read this post where it is suggested to modify the codebase, so I set the VM options of Intellij as:
-Djava.rmi.server.codebase=file:/home/luca/Documents/PAD/RaftFS/target/
Where target contains RaftFS-1.0-SNAPSHOT.jar which is the jar produced by Maven (and so containing ServerInterface). Obviously, before lunch the Main program I execute rmiregistry on the shell. The CLASSHPATH variable is not set in my system environment.
Anyway these exception raise when I execute this program:
/usr/lib/jvm/java-1.7.0-openjdk-amd64/bin/java -Djava.rmi.server.codebase=file:/home/luca/Documents/PAD/RaftFS/target/ -Didea.launcher.port=7535 -Didea.launcher.bin.path=/home/luca/idea-IU-139.1117.1/bin -Dfile.encoding=UTF-8 -classpath /usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/compilefontconfig.jar:/usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/rt.jar:/usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/charsets.jar:/usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/rhino.jar:/usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/jsse.jar:/usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/jce.jar:/usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/resources.jar:/usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/management-agent.jar:/usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/javazic.jar:/usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/ext/sunjce_provider.jar:/usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/ext/dnsns.jar:/usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/ext/icedtea-sound.jar:/usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/ext/sunpkcs11.jar:/usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/ext/java-atk-wrapper.jar:/usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/ext/zipfs.jar:/usr/lib/jvm/java-1.7.0-openjdk-amd64/jre/lib/ext/localedata.jar:/home/luca/Documents/PAD/RaftFS/out/production/main:/home/luca/idea-IU-139.1117.1/lib/idea_rt.jar com.intellij.rt.execution.application.AppMain PAD.RaftFS.Server.Main
ServerRMI exception:
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: PAD.RaftFS.Server.ServerInterface
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:419)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:267)
at sun.rmi.transport.Transport$2.run(Transport.java:202)
at sun.rmi.transport.Transport$2.run(Transport.java:199)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:198)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:567)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.access$400(TCPTransport.java:619)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$1.run(TCPTransport.java:684)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$1.run(TCPTransport.java:681)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:681)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:275)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:252)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:378)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at PAD.RaftFS.Server.Main.main(Main.java:20)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: PAD.RaftFS.Server.ServerInterface
at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:409)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:267)
at sun.rmi.transport.Transport$2.run(Transport.java:202)
at sun.rmi.transport.Transport$2.run(Transport.java:199)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:198)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:567)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.access$400(TCPTransport.java:619)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$1.run(TCPTransport.java:684)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler$1.run(TCPTransport.java:681)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:681)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: PAD.RaftFS.Server.ServerInterface
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.rmi.server.LoaderHandler$Loader.loadClass(LoaderHandler.java:1206)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:274)
at sun.rmi.server.LoaderHandler.loadClassForName(LoaderHandler.java:1219)
at sun.rmi.server.LoaderHandler.loadProxyInterfaces(LoaderHandler.java:729)
at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:673)
at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:610)
at java.rmi.server.RMIClassLoader$2.loadProxyClass(RMIClassLoader.java:646)
at java.rmi.server.RMIClassLoader.loadProxyClass(RMIClassLoader.java:311)
at sun.rmi.server.MarshalInputStream.resolveProxyClass(MarshalInputStream.java:255)
at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1558)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1514)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
... 17 more
IMPORTANT UPDATE: if substitute Registry registry = LocateRegistry.getRegistry(); with Registry registry = LocateRegistry.createRegistry(1099); and avoiding to execute rmiregistry, then no exception is raised. Can I assume that with 0 parameter the register is bounded to an anonymous port? Why this happens? It actually solve the problem or not?
To answer your actual question, the Registry didn't have the class mentioned available on its CLASSPATH. Using the codebase feature is one solution to that, but it's complex. A simpler solution is to start the registry in the server JVM with LocateRegistry.createRegistry().
You can use port zero for that, which does indeed indicate an anonymous port, but it's completely pointless to do so. It has no bearing on the original problem and it just makes your Registry impossible for the client to find.
Another solution is to specifics the CLASSPATH when starting the registry, with
rmiregistry -J-classpath=...
This question already has an answer here:
Is it necessary/important to set a classpath in the RMI registry?
(1 answer)
Closed 8 years ago.
I am trying lo learn RMI by following the Oracle documentation for RMI
I have created the classes for server side and client side, the class details are as follows:
compute.Compute -- Remote interface
compute.Task -- Normal interface
engine.ComputeEngine -- Class that implements remote interface
The code details can be seem from the document at these links:
http://docs.oracle.com/javase/tutorial/rmi/designing.html
http://docs.oracle.com/javase/tutorial/rmi/implementing.html
I have followed the steps given in below link to compile the code, all I am doing these are on my machine which has Ubuntu OS.
http://docs.oracle.com/javase/tutorial/rmi/compiling.html
Now as per below link I have placed the policy files for client and server at path : /home/user/public_html
http://docs.oracle.com/javase/tutorial/rmi/running.html
one more difference is I have tomcat server so I placed the class files under Tomcat webapps and under my web application, so I am running the class using the command:
java -cp /home/user/src:. -Djava.rmi.server.codebase=http://myipaddress:8080/myapp/classes/compute.jar -Djava.rmi.server.hostname=myipaddress -Djava.security.policy=server.policy engine.ComputeEngine
Now when I run this application I am getting exception as:
ComputeEngine exception:
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: compute.Compute
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:419)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:267)
at sun.rmi.transport.Transport$1.run(Transport.java:177)
at sun.rmi.transport.Transport$1.run(Transport.java:174)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:173)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:556)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:811)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:670)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:275)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:252)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:378)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at engine.ComputeEngine.main(ComputeEngine.java:31)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: compute.Compute
at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:409)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:267)
at sun.rmi.transport.Transport$1.run(Transport.java:177)
at sun.rmi.transport.Transport$1.run(Transport.java:174)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:173)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:556)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:811)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:670)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: compute.Compute
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.rmi.server.LoaderHandler$Loader.loadClass(LoaderHandler.java:1206)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:270)
at sun.rmi.server.LoaderHandler.loadClassForName(LoaderHandler.java:1219)
at sun.rmi.server.LoaderHandler.loadProxyInterfaces(LoaderHandler.java:729)
at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:673)
at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:610)
at java.rmi.server.RMIClassLoader$2.loadProxyClass(RMIClassLoader.java:646)
at java.rmi.server.RMIClassLoader.loadProxyClass(RMIClassLoader.java:311)
at sun.rmi.server.MarshalInputStream.resolveProxyClass(MarshalInputStream.java:255)
at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1558)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1e exce514)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
... 13 more
The exception says java.lang.ClassNotFoundException: compute.Compute. But I have the class file in compute.jar that is located at my path /home/user/src and also I can download it using URL at http://myipaddress:8080/myapp/classes/compute.jar
Also FYI, I am doing all the steps on my machine only without any separate client and server machines.
Can someone please help me how can I fix this issue? Please let me know if you need any further details so I can provide them.
Update:
I followed the asnwer given by #EJP at this post - Is it necessary/important to set a classpath in the RMI registry?
then I started rmiregistry from directory where I have the jar file that has Compute.class and then ran the below command:
java -cp /home/user/src:/home/user/public_html/classes/compute.jar -Djava.rmi.server.codebase=http://myipaddress:8080/myapp/classes/compute.jar -Djava.rmi.server.hostname=myipaddress -Djava.security.policy=server.policy engine.ComputeEngine
But still I am getting same exception.
That class isn't on the Registry's CLASSPATH.
i'm doing this tutorial : http://www.youtube.com/watch?v=vkw275ptI3E
it's a java rmi tutorial (client, server)
but he try this on Local and it dosen't work on my Computer
When i try to activate my server in local i got this message :
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: simple.rmi.server.MyServer_Stub
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:400)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:248)
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:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:680)
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:359)
at sun.rmi.registry.RegistryImpl_Stub.bind(Unknown Source)
at simple.rmi.server.MyServer.main(MyServer.java:33)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: simple.rmi.server.MyServer_Stub
at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:390)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:248)
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:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.ClassNotFoundException: simple.rmi.server.MyServer_Stub
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.rmi.server.LoaderHandler$Loader.loadClass(LoaderHandler.java:1185)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:249)
at sun.rmi.server.LoaderHandler.loadClassForName(LoaderHandler.java:1198)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:433)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:164)
at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:620)
at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:247)
at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:201)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1589)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1494)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1748)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1327)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:349)
... 12 more
What can i do ?
Some incompatible changes have been made in recent JDK versions that cause old RMI tutorials not to work. In particular, JDK 7u21 now requires you to set the codebase property on the client and the registry as well as on the server. The screencast only shows the setting on the server.
The screencast (or perhaps the Eclipse plugin) is also out of date in that it shows the generation of stubs. It's not necessary to use any tool such as rmic or an Eclipse plugin to generate stubs, since stubs have been generated automatically by RMI since Java SE 5 (which was released in 2002).
I am trying to develop a chat app, using java RMI, where multiple clients can interact with each other. The issue is, the codes are working well, atleast so far, in eclipse but when I try it from terminal using the standard procedures following rmic, start rmiregistry and initiate server and then client, its throwing a long list of ChatServer_stub.class ClassNotFoundException. ChatServer_stub.class is there, I mean I cant initiate a server without creating stub using rmic. anyideas??? I dont think this issue is anywhere related with the codes since it working with eclipse, so I am pasting just the errors here.
just in case..here are the codes : https://github.com/kumarsaurabh20/Programming_Test/tree/master/network_prog_Java/RMIChatApp/src
Registry is created..
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: ChatServer_Stub
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:419)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:267)
at sun.rmi.transport.Transport$1.run(Transport.java:177)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:173)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:553)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:808)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:667)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:679)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:273)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:251)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:377)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at java.rmi.Naming.rebind(Naming.java:177)
at ChatServer.rebindChatServer(ChatServer.java:47)
at ChatServer.main(ChatServer.java:98)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: ChatServer_Stub
at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:409)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:267)
at sun.rmi.transport.Transport$1.run(Transport.java:177)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:173)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:553)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:808)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:667)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:679)
Caused by: java.lang.ClassNotFoundException: ChatServer_Stub
at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:266)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:451)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:182)
at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:637)
at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:264)
at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:220)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1609)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1514)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1768)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
... 12 more
I guess the answe lies here: http://docs.oracle.com/javase/6/docs/technotes/guides/rmi/codebase.html
Found a similar question in this post with a well explained solution:
running rmi server, classnotfound
thanx A. Levy
The Registry doesn't have the stub on its CLASSPATH. Either start the Registry such that it does, or use the codebase feature.