Thursday, September 6, 2012

resteasy-json-xml

This project aims to explain how to use RESTeasy 1.2.1.GA with JBoss EAP 5.1.2 when you deal with @Form and @FormParam.

Also you will find how to use URL-based content negotation to retrieve data in the format you like.

Soon I'll code the same project using RESTeasy 2.

What you need is:

Maven 2+
JDK 5+
JBoss EAP 5.1.2 or JBoss AS 6
The IDE you like, preferably a good one. Any IDEA out there? ;-)

Github

https://github.com/foogaro/resteasy-json-xml

What is it about?

In few words, about error you hit during test, which sometimes are not easy to fix - not because of you, but 'cause of the not clear stack trace.

Here they are

I'll show you just the stack trace, solution are reported and commented into the code.

org.jboss.resteasy.plugins.providers.jaxb.JAXBMarshalException: com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 1 counts of IllegalAnnotationExceptions

16:17:22,593 ERROR [org.jboss.resteasy.core.SynchronousDispatcher.handleFailure] Failed executing GET /library/books
org.jboss.resteasy.plugins.providers.jaxb.JAXBMarshalException: com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 1 counts of IllegalAnnotationExceptions
Invalid @XmlElementRef : Type "class com.foogaro.resteasy.model.DataWrapper" or any of its subclasses are not known to this context.
    this problem is related to the following location:
        at public com.foogaro.resteasy.model.DataWrapper com.foogaro.resteasy.model.Result.getData()
        at com.foogaro.resteasy.model.Result

org.jboss.resteasy.spi.WriterException: java.lang.IllegalStateException: Invalid JSON namespace: http://www.w3.org/2001/XMLSchema-instance

09:14:48,143 ERROR [org.jboss.resteasy.core.SynchronousDispatcher.handleFailure] Failed executing POST /library/authors.json
org.jboss.resteasy.spi.WriterException: java.lang.IllegalStateException: Invalid JSON namespace: http://www.w3.org/2001/XMLSchema-instance
 at org.jboss.resteasy.core.ServerResponse.writeTo(ServerResponse.java:197)
 at org.jboss.resteasy.core.SynchronousDispatcher.writeJaxrsResponse(SynchronousDispatcher.java:485)
 at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:422)
 at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:111)
 at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:217)
 at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:159)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:183)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:95)
 at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
 at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
 at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at org.jboss.web.tomcat.service.request.ActiveRequestResponseCacheValve.internalProcess(ActiveRequestResponseCacheValve.java:74)
 at org.jboss.web.tomcat.service.request.ActiveRequestResponseCacheValve.invoke(ActiveRequestResponseCacheValve.java:47)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:599)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:451)
 at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.IllegalStateException: Invalid JSON namespace: http://www.w3.org/2001/XMLSchema-instance
 at org.codehaus.jettison.mapped.MappedNamespaceConvention.getJSONNamespace(MappedNamespaceConvention.java:182)
 at org.codehaus.jettison.mapped.MappedNamespaceConvention.createAttributeKey(MappedNamespaceConvention.java:170)
 at org.codehaus.jettison.mapped.MappedXMLStreamWriter.writeAttribute(MappedXMLStreamWriter.java:90)
 at com.sun.xml.bind.v2.runtime.output.XMLStreamWriterOutput.attribute(XMLStreamWriterOutput.java:133)
 at com.sun.xml.bind.v2.runtime.XMLSerializer.attribute(XMLSerializer.java:435)
 at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsXsiType(XMLSerializer.java:685)
 at com.sun.xml.bind.v2.runtime.property.SingleElementNodeProperty.serializeBody(SingleElementNodeProperty.java:152)
 at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:332)
 at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsSoleContent(XMLSerializer.java:593)
 at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeRoot(ClassBeanInfoImpl.java:320)
 at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsRoot(XMLSerializer.java:494)
 at com.sun.xml.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:315)
 at com.sun.xml.bind.v2.runtime.MarshallerImpl.marshal(MarshallerImpl.java:172)
 at org.jboss.resteasy.plugins.providers.jaxb.json.JettisonMappedMarshaller.marshal(JettisonMappedMarshaller.java:71)
 at org.jboss.resteasy.plugins.providers.jaxb.BaseMarshaller.marshal(BaseMarshaller.java:24)
 at org.jboss.resteasy.plugins.providers.jaxb.AbstractJAXBProvider.writeTo(AbstractJAXBProvider.java:105)
 at org.jboss.resteasy.core.interception.MessageBodyWriterContextImpl.proceed(MessageBodyWriterContextImpl.java:117)
 at org.jboss.resteasy.plugins.interceptors.encoding.GZIPEncodingInterceptor.write(GZIPEncodingInterceptor.java:48)
 at org.jboss.resteasy.core.interception.MessageBodyWriterContextImpl.proceed(MessageBodyWriterContextImpl.java:123)
 at org.jboss.resteasy.core.ServerResponse.writeTo(ServerResponse.java:186)
 ... 28 more

Why am I sharing this?

I'm sure I'll need that sooner or later!

Hope, it helps!

Ciao, Foogaro

New github project - resteasy-json-xml