Cannot deserialize OutputStream

[compost]

Hi,

I have a problem with spring remoting. I deployed a remote service in jboss and I am able to call simple methods from its interface which return a string. But what I want to do is to call a method which returns an java.io.OutputStream. But when I invoke the remote method I get the following exception:

junit.framework.AssertionFailedError: Cannot deserialize result from HTTP invoker remote service [http://localhost:80/remote/AdministrationServiceSpring]; nested exception is java.lang.ClassNotFoundException: [Ljava.lang.StackTraceElement;
	at junit.framework.Assert.fail(Assert.java:47)
	at de.juwimm.cms.client.test.AdministrationServiceClientTest.testExportXlsPersonData(AdministrationServiceClientTest.java:25)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at junit.framework.TestCase.runTest(TestCase.java:154)
	at junit.framework.TestCase.runBare(TestCase.java:127)
	at org.springframework.test.ConditionalTestCase.runBare(ConditionalTestCase.java:69)
	at junit.framework.TestResult$1.protect(TestResult.java:106)
	at junit.framework.TestResult.runProtected(TestResult.java:124)
	at junit.framework.TestResult.run(TestResult.java:109)
	at junit.framework.TestCase.run(TestCase.java:118)
	at junit.framework.TestSuite.runTest(TestSuite.java:208)
	at junit.framework.TestSuite.run(TestSuite.java:203)
	at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:128)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)

The client and the server are running under java 1.5.

Does anyone have an idea?
Thanks,
Jens

[dejanp]

Well, OutputStream is not serializable. What would it mean to serialize a stream pointing to the local file system?

[compost]

Yeah your are right. It is a probably a bad idea . The remoting technology is maybe not made to transfer large files. Although I found this:

http://opensource.atlassian.com/proj...rowse/SPR-1223

I will try to find a different solution then. Thanks for the reply anyway.

Cheers,
Jens