com.sun.xml.ws.client.ClientTransportException: HTTP transport error: java.lang.ClassCastException

Question

I am currently trying to call a JAX-WS from a Weblogic 12c and Java 7 environment. I've generated the client stubs using the weblogic client generator plugin from maven, specifically:

<b>groupId:com.oracle.weblogic</b><br>
<b>artifactId:weblogic-maven-plugin</b>

client jars seem to generate fine. I am able to generate the client stub in java, but when the actual API is called through the stub that will send the SOAP message to the service, I get the following strange exception:

<b>com.sun.xml.ws.client.ClientTransportException: HTTP transport error: java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Integer
com.sun.xml.ws.client.ClientTransportException: HTTP transport error: java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Integer
 at com.sun.xml.ws.transport.http.client.HttpClientTransport.getOutput(HttpClientTransport.java:131)
 at com.sun.xml.ws.transport.http.client.HttpTransportPipe.process(HttpTransportPipe.java:219)
 at com.sun.xml.ws.transport.http.client.HttpTransportPipe.processRequest(HttpTransportPipe.java:143)
 at com.sun.xml.ws.transport.DeferredTransportPipe.processRequest(DeferredTransportPipe.java:138)
 at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:892)
 at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:841)
 at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:804)
 at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:706)
 at com.sun.xml.ws.client.Stub.process(Stub.java:385)
 at com.sun.xml.ws.client.sei.SEIStub.doProcess(SEIStub.java:189)
 at com.sun.xml.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:119)
 at com.sun.xml.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:102)
 at com.sun.xml.ws.client.sei.SEIStub.invoke(SEIStub.java:172)
 at $Proxy130.getSearchResults(Unknown Source)
 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:601)
 at weblogic.wsee.jaxws.spi.ClientInstanceInvocationHandler.invoke(ClientInstanceInvocationHandler.java:84)</b>

I saw this same question being posted under a glassfish setup Here

But with no solution.

Now i've tried SOAP UI, the service responds fine from here, i've tried using weblogic 11g, and same error is produced. I am logging the actual SOAP message that is going out before the exception is produced, and the xml is accurate and works when run from SOAP UI.

What could be causing this?

Thanks

Answer 1

It took me couple of hours to fix the problem. I was using the wrong BindingProviderProperties interface.

The BindingProviderProperties interface exists in two different packages. (for different Java/JAX-WS versions)

If you are getting ClassCastException most probably you need import different package in your soap service class.

change

import com.sun.xml.ws.client.BindingProviderProperties;

to

import com.sun.xml.internal.ws.client.BindingProviderProperties;

• Martin Devillers: This definitely send me in the right direction. I was setting BindingProviderProperties for timeouts using string-values, rather than integer-values (e.g. "5000" versus 5000). Thanks!
• Raphael Mäder: @MartinDevillers Thank you! I had the same problem with Long values, had to cast return value of Duration.toMillis() to Integer.
• albciff: If you change the package of the property, the error goes away because internally the implementation use the other property. The correct thing to do to avoid the problem and to really set a timeout is to pass the property value as int.

Answer 2

The problem is that you're setting timeout properties using String value, however internally the class HttpClientTransport in createHttpConnection() method is expecting an integer for this property:

...
Integer reqTimeout = (Integer)context.invocationProperties.get(BindingProviderProperties.REQUEST_TIMEOUT);
if (reqTimeout != null) {
 httpConnection.setReadTimeout(reqTimeout);
}
...

Then if you're passing the property as String, it throws the ClassCastException. So I suppose you've something like:

String timeoutInMillis = "30000";
dispatcher.getRequestContext().put(BindingProviderProperties.REQUEST_TIMEOUT, timeoutInMillis);
dispatcher.getRequestContext().put(BindingProviderProperties.CONNECT_TIMEOUT, timeoutInMillis);

Instead of you must set the property value as int for example using Integer.valueOf(String value):

String timeoutInMillis = "30000";
dispatcher.getRequestContext().put(BindingProviderProperties.REQUEST_TIMEOUT, Integer.valueOf(timeoutInMillis));
dispatcher.getRequestContext().put(BindingProviderProperties.CONNECT_TIMEOUT, Integer.valueOf(timeoutInMillis));

Or alternatively you can also define the timeout as int:

int timeoutInMillis = 30000;
dispatcher.getRequestContext().put(BindingProviderProperties.REQUEST_TIMEOUT, timeoutInMillis);
dispatcher.getRequestContext().put(BindingProviderProperties.CONNECT_TIMEOUT, timeoutInMillis);