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From Isuru Suriarachchi <isur...@gmail.com>
Subject Re: Axis2 JSON support
Date Sat, 12 Nov 2011 03:14:21 GMT
You have to use the RawXMLInOutMessageReceiver in the services.xml of your
service. Refer [1] for services.xml syntax.

Thanks,
~Isuru

[1] http://wso2.org/library/2060

On Fri, Nov 11, 2011 at 11:16 AM, Public Network Services <
publicnetworkservices@gmail.com> wrote:

> Hi...
>
> I am trying to use Axis2 1.6.1 with Jetty for a RESTful web service in
> which I want data to travel back and forth serialized in JSON. Using the
> POJO deployment scenario, I am hitting the well-known issue 5158 (
> https://issues.apache.org/jira/browse/AXIS2-5158) with the "namespace
> mismatch" exception.
>
> Having a look at your relevant article (
> http://isurues.wordpress.com/2009/10/06/how-to-use-axis2-json/), I am not
> sure how to switch to the RawXMLInOutMessageReceiver. As a matter of fact,
> RawXMLInOnly and RawXMLInOut are the only message receivers that appear in
> my axis2.xml files, at both the client and the service sides, but the
> problem persists. I am using an RPCServiceClient  object, in which I run
> the invokeBlocking(qname, args, returnTypes) method, which works just fine
> with SOAP but not with JSON. Running the JSONIntegrationTest still produces
> the same error.
>
> Even with the simple RESTClient sample included in the Axis2 distribution,
> I get and exception if I switch to JSON:
>
> options.setProperty(Constants.Configuration.MESSAGE_TYPE,
> "application/json");
>
>
> Exception from Jetty:
>
> java.lang.NullPointerException
>         at
> org.apache.axiom.om.impl.llom.OMSourcedElementImpl.internalSerialize(OMSourcedElementImpl.java:695)
>         at
> org.apache.axiom.om.impl.llom.OMSourcedElementImpl.serializeAndConsume(OMSourcedElementImpl.java:758)
>         at
> org.apache.axis2.json.AbstractJSONMessageFormatter.writeTo(AbstractJSONMessageFormatter.java:174)
>         at
> org.apache.axis2.transport.http.CommonsHTTPTransportSender.sendUsingOutputStream(CommonsHTTPTransportSender.java:364)
>         at
> org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(CommonsHTTPTransportSender.java:241)
>         at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:443)
>         at
> org.apache.axis2.receivers.AbstractInOutSyncMessageReceiver.invokeBusinessLogic(AbstractInOutSyncMessageReceiver.java:45)
>         at
> org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:110)
>         at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
>         at
> org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:172)
>         at
> org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:146)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:755)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
>         at
> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:558)
>         at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:488)
>         at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
>         at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:483)
>         at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:233)
>         at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:973)
>         at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:417)
>         at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192)
>         at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:907)
>         at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
>         at
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250)
>          at
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149)
>         at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
>         at org.eclipse.jetty.server.Server.handle(Server.java:346)
>         at
> org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:442)
>         at
> org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:941)
>         at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:893)
>         at
> org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:224)
>         at
> org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:51)
>         at
> org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:586)
>         at
> org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:44)
>         at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598)
>         at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533)
>         at java.lang.Thread.run(Thread.java:662)
>
>


-- 
Technical Lead,
WSO2 Inc. http://wso2.org/
Blog : http://isurues.wordpress.com/

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