Hi Arun,
please add a default public no-arg constructor to your States jaxb class.
It should help.
~Jakub
On Tue, Sep 04, 2007 at 11:12:09PM -0700, Arun Gupta wrote:
> I tried invoking the endpoint using ant's get task and got the following
> error:
>
> -- cut here --
> get:
> [get] Getting: http://localhost:9998/helloworld/json2
> [get] To: C:\workarea\samples\jersey\json\out
> [get] Error getting http://localhost:9998/helloworld/json2 to
> C:\workarea\
> samples\jersey\json\out
>
> BUILD FAILED
> C:\workarea\samples\jersey\json\build.xml:32: java.io.IOException:
> Premature EOF
>
> -- cut here --
>
> No error message is thrown on the server-side. Any further suggestions
> on debugging it ?
>
> -Arun
>
>
> Jakub Podlesak wrote:
> >Hi Arun,
> >
> >I have changed the produced content type to [application/xml]
> >for your [samples.HelloWorldResource#getStates] method
> >and it does not produce valid xml.
> >
> >I get following error message from firefox:
> >--cuthere--
> >XML Parsing Error: no element found
> >Location: http://localhost:9998/helloworld/json2
> >Line Number 1, Column 1:
> >--cuthere--
> >
> >My recommendation is to test your jaxb class first.
> >
> >I will look at it and let you know,
> >
> >~Jakub
> >
> >On Tue, Sep 04, 2007 at 10:30:46PM -0700, Arun Gupta wrote:
> >>I've attached a zip file that contains a really simple to demonstrate
> >>usage of JAXB. Steps to follow:
> >>
> >>1). Set jersey.home in build.xml appropriately
> >>2). Invoke "ant run"
> >>3). Access "http://localhost:9998/helloworld/json2" in browser
> >>
> >>The returned JSON is empty.
> >>
> >>What am I missing ?
> >>
> >>-Arun
> >>
> >>Arun Gupta wrote:
> >>>After removing the private directory, I'm getting the following error
> >>>during build time:
> >>>
> >>>-- cut here --
> >>>Created dir: C:\workarea\samples\JsonFromJaxb\build\web\WEB-INF\classes
> >>>Processing resource classes
> >>>Problem encountered during annotation processing;
> >>>see stacktrace below for more information.
> >>>java.lang.ClassFormatError: Illegal class modifiers in class
> >>>com/sun/ws/rest/tools/webapp/writer/package-info: 0x1600
> >>> at java.lang.ClassLoader.defineClass1(Native Method)
> >>> at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
> >>> at java.lang.ClassLoader.defineClass(ClassLoader.java:465)
> >>> at
> >>>com.sun.istack.tools.ParallelWorldClassLoader.findClass(ParallelWorldClassLoader.java:90)
> >>>
> >>> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> >>> at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
> >>> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
> >>> at java.lang.Class.forName0(Native Method)
> >>> at java.lang.Class.forName(Class.java:242)
> >>> at java.lang.Package.getPackageInfo(Package.java:350)
> >>> at java.lang.Package.getAnnotation(Package.java:361)
> >>> at com.sun.xml.txw2.TXW.getTagName(TXW.java:60)
> >>> at com.sun.xml.txw2.TXW.create(TXW.java:83)
> >>> at
> >>>com.sun.ws.rest.tools.webapp.writer.WebAppWriter.writeTo(WebAppWriter.java:58)
> >>>
> >>> at
> >>>com.sun.ws.rest.tools.webapp.writer.WebAppWriter.write(WebAppWriter.java:66)
> >>>
> >>> at
> >>>com.sun.ws.rest.tools.annotation.apt.UriTemplateProcessor.process(UriTemplateProcessor.java:214)
> >>>
> >>> at
> >>>com.sun.mirror.apt.AnnotationProcessors$CompositeAnnotationProcessor.process(AnnotationProcessors.java:60)
> >>>
> >>> at com.sun.tools.apt.comp.Apt.main(Apt.java:454)
> >>> at
> >>>com.sun.tools.apt.main.JavaCompiler.compile(JavaCompiler.java:448)
> >>> at com.sun.tools.apt.main.Main.compile(Main.java:1075)
> >>> at com.sun.tools.apt.main.Main.compile(Main.java:938)
> >>> at com.sun.tools.apt.Main.processing(Main.java:95)
> >>> at com.sun.tools.apt.Main.process(Main.java:85)
> >>> at com.sun.tools.apt.Main.process(Main.java:67)
> >>> at com.sun.ws.rest.tools.RsGenTool.run(RsGenTool.java:36)
> >>> 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:585)
> >>> at com.sun.ws.rest.tools.Invoker.invoke(Invoker.java:104)
> >>> at com.sun.ws.rest.tools.RsGen.main(RsGen.java:31)
> >>>-- cut here --
> >>>
> >>>and
> >>>
> >>>-- cut here --
> >>>Initializing Sun's JavaServer Faces implementation (1.2_04-b20-p03) for
> >>>context ''
> >>>"DPL8015: Invalid Deployment Descriptors in Deployment descriptor file
> >>>WEB-INF/web.xml in archive [web].
> >>>Line -1 Column -1 -- Premature end of file."
> >>>"DPL8005: Deployment Descriptor parsing failure : Premature end of file."
> >>>Exception occured in J2EEC Phaseorg.xml.sax.SAXParseException: Premature
> >>>end of file.
> >>>com.sun.enterprise.deployment.backend.IASDeploymentException: Error
> >>>loading deployment descriptors for module [JsonFromJaxb] Line -1 Column
> >>>-1 -- Deployment descriptor file WEB-INF/web.xml in archive [web].
> >>>Premature end of file.
> >>> at
> >>>com.sun.enterprise.deployment.backend.Deployer.loadDescriptors(Deployer.java:380)
> >>>
> >>> at
> >>>com.sun.enterprise.deployment.backend.ModuleDeployer.loadDescriptors(ModuleDeployer.java:423)
> >>>
> >>> at
> >>>com.sun.enterprise.deployment.backend.WebModuleDeployer.deploy(WebModuleDeployer.java:157)
> >>>
> >>>
> >>>-- cut here --
> >>>
> >>>during runtime.
> >>>
> >>>Any idea what might be wrong ?
> >>>
> >>>-Arun
> >>>Jakub Podlesak wrote:
> >>>>Hi Arun,
> >>>>
> >>>>The NetBeans project should use jar files from it's [lib]
> >>>>subdirectory. I have rewritten the dependencies. (If you look at the
> >>>>snapshot you will realize
> >>>>I run it from outside of Jersey dir structure)
> >>>>
> >>>>But you right, I forgot to remove [nbproject/private] directory, which
> >>>>keeps info about the files within my filesystem. It can probably cause
> >>>>issues.
> >>>>
> >>>>Could you please remove the [private] dir and try again?
> >>>>I will fix the issue and update the project on the web.
> >>>>
> >>>>Thanks,
> >>>>
> >>>>~Jakub
> >>>>
> >>>>On Fri, Aug 31, 2007 at 11:56:52AM -0700, Arun Gupta wrote:
> >>>>>Thanks Jakub.
> >>>>>
> >>>>>The NetBeans project seems to be using Jersey directory structure for
> >>>>>resolving libraries and that gives the error attached in the image. I
> >>>>>resolved the references but building the project gives the following
> >>>>>error:
> >>>>>
> >>>>>C:\workarea\samples\JsonFromJaxb\JsonFromJaxb\build.xml:22: taskdef
> >>>>>class com.sun.ws.rest.tools.ant.WebResourcesProcessorTask cannot be
> >>>>>found
> >>>>>
> >>>>>-Arun
> >>>>>
> >>>>>Jakub Podlesak wrote:
> >>>>>>Hi Arun,
> >>>>>>
> >>>>>>please look at the sample linked from:
> >>>>>>http://blogs.sun.com/japod/entry/json_representation_of_jaxb_object
> >>>>>>
> >>>>>>~Jakub
> >>>>>>
> >>>>>>On Fri, Aug 31, 2007 at 08:13:36AM -0700, Arun Gupta wrote:
> >>>>>>>>What you need to do is to create a JAXB bean with @XmlRootElement
> >>>>>>>>on the class. Write a JAX-RS bean with a method that returns the
> >>>>>>>>JAXB bean and is annotated with @ProduceMime("application/json")
> >>>>>>>>something like:
> >>>>>>>>
> >>>>>>>>@XmlRootElement
> >>>>>>>>public class States {
> >>>>>>>>...
> >>>>>>>>}
> >>>>>>>>
> >>>>>>>>@UriTemplate("states")
> >>>>>>>>public class StatesResource {
> >>>>>>>>
> >>>>>>>>@HttpMethod
> >>>>>>>>@ProduceMime("application/json")
> >>>>>>>>States getStates() {
> >>>>>>>> ...
> >>>>>>>>}
> >>>>>>>>}
> >>>>>>>>
> >>>>>>>>The JAXB provider will automagically convert the returned States
> >>>>>>>>class instance into JSON for you.
> >>>>>>>This is reasonable. I tried it exactly this way without looking at
> >>>>>>>the sample and got an empty response.
> >>>>>>>
> >>>>>>>>I'm sure Jakub's example will show this in more detail.
> >>>>>>>This sample is not configured to run by default:
> >>>>>>>
> >>>>>>>-- cut here --
> >>>>>>>init:
> >>>>>>>deps-jar:
> >>>>>>>Processing resource classes
> >>>>>>>compile:
> >>>>>>>run:
> >>>>>>>Exception in thread "main" java.lang.IllegalArgumentException
> >>>>>>> at
> >>>>>>>com.sun.ws.rest.samples.storageservice.Main.main(Main.java:85)
> >>>>>>>Java Result: 1
> >>>>>>>BUILD SUCCESSFUL (total time: 4 seconds)
> >>>>>>>-- cut here --
> >>>>>>>
> >>>>>>>A default command-line argument is missing.
> >>>>>>>
> >>>>>>>-Arun
> >>>>>>>>Marc.
> >>>>>>>>
> >>>>>>>>>>>use. You might not be able to get the exact JSON format you
> >>>>>>>>>>>show below but I'd bet you could get close just using some of
> >>>>>>>>>>>the JAXB annotations.
> >>>>>>>>>>>
> >>>>>>>>>>>Marc.
> >>>>>>>>>>>
> >>>>>>>>>>>On Aug 30, 2007, at 2:33 PM, Arun Gupta wrote:
> >>>>>>>>>>>
> >>>>>>>>>>>>In order to return a JSON array like:
> >>>>>>>>>>>>
> >>>>>>>>>>>>[{"name":"California","value":"California"},{"name":"New
> >>>>>>>>>>>>York","value":"New York"},{"name":"Alabama"
> >>>>>>>>>>>>,"value":"Alabama"}, {"name":"Texas","value":"Texas"}]
> >>>>>>>>>>>>
> >>>>>>>>>>>>I have to write the following code:
> >>>>>>>>>>>>
> >>>>>>>>>>>>-- cut here --
> >>>>>>>>>>>>@HttpMethod("GET")
> >>>>>>>>>>>>@ProduceMime("application/json")
> >>>>>>>>>>>>public JSONArray getMessage() throws JSONException {
> >>>>>>>>>>>> String[] states = { "California", "New York", "Alabama",
> >>>>>>>>>>>>"Texas"};
> >>>>>>>>>>>> JSONArray array = new JSONArray();
> >>>>>>>>>>>> for (String s : states) {
> >>>>>>>>>>>> JSONObject item = new JSONObject();
> >>>>>>>>>>>> item.put("name", s).put("value", s);
> >>>>>>>>>>>> array.put(item);
> >>>>>>>>>>>> }
> >>>>>>>>>>>>
> >>>>>>>>>>>> return array;
> >>>>>>>>>>>>}
> >>>>>>>>>>>>-- cut here --
> >>>>>>>>>>>>
> >>>>>>>>>>>>I think this is too involving and low-level. Can the code be
> >>>>>>>>>>>>something like the following ?
> >>>>>>>>>>>>
> >>>>>>>>>>>>-- cut here --
> >>>>>>>>>>>>@JSONObject
> >>>>>>>>>>>>ItemBean {
> >>>>>>>>>>>>ItemBean(String name, String value) { ... }
> >>>>>>>>>>>>
> >>>>>>>>>>>>@JSONObjectKey
> >>>>>>>>>>>>public String getName() { ... }
> >>>>>>>>>>>>
> >>>>>>>>>>>>@JSONObjectValue("value")
> >>>>>>>>>>>>public String getNameValue() { ... }
> >>>>>>>>>>>>}
> >>>>>>>>>>>>
> >>>>>>>>>>>>@HttpMethod("GET")
> >>>>>>>>>>>>@ProduceMime("application/json")
> >>>>>>>>>>>>public List<ItemBean> getMessage() {
> >>>>>>>>>>>> String[] states = { "California", "New York", "Alabama",
> >>>>>>>>>>>>"Texas"};
> >>>>>>>>>>>> List<ItemBean> list = new ArrayList<ItemBean>();
> >>>>>>>>>>>> for (String s : states) {
> >>>>>>>>>>>> ItemBean bean = new ItemBean(s, s);
> >>>>>>>>>>>> list.add(bean);
> >>>>>>>>>>>> }
> >>>>>>>>>>>>
> >>>>>>>>>>>> return list;
> >>>>>>>>>>>>}
> >>>>>>>>>>>>-- cut here --
> >>>>>>>>>>>>
> >>>>>>>>>>>>This will require defining new annotations JSONObject,
> >>>>>>>>>>>>JSONObjectKey & JSONObjectValue. I think this is more natural
> >>>>>>>>>>>>to a Java developer.
> >>>>>>>>>>>>
> >>>>>>>>>>>>-Arun
> >>>>>>>>>>>>--
> >>>>>>>>>>>>Web Technologies and Standards
> >>>>>>>>>>>>Sun Microsystems, Inc.
> >>>>>>>>>>>>Blog: http://blogs.sun.com/arungupta
> >>>>>>>>>>>>
> >>>>>>>>>>>>---------------------------------------------------------------------
> >>>>>>>>>>>>
> >>>>>>>>>>>>To unsubscribe, e-mail: users-unsubscribe_at_jersey.dev.java.net
> >>>>>>>>>>>>For additional commands, e-mail: users-help_at_jersey.dev.java.net
> >>>>>>>>>>>>
> >>>>>>>>>>>---
> >>>>>>>>>>>Marc Hadley <marc.hadley at sun.com>
> >>>>>>>>>>>CTO Office, Sun Microsystems.
> >>>>>>>>>>>
> >>>>>>>>>>>
> >>>>>>>>>>>---------------------------------------------------------------------
> >>>>>>>>>>>
> >>>>>>>>>>>To unsubscribe, e-mail: users-unsubscribe_at_jersey.dev.java.net
> >>>>>>>>>>>For additional commands, e-mail: users-help_at_jersey.dev.java.net
> >>>>>>>>>>>
> >>>>>>>>>>---------------------------------------------------------------------
> >>>>>>>>>>
> >>>>>>>>>>To unsubscribe, e-mail: users-unsubscribe_at_jersey.dev.java.net
> >>>>>>>>>>For additional commands, e-mail: users-help_at_jersey.dev.java.net
> >>>>>>>>>--
> >>>>>>>>>Web Technologies and Standards
> >>>>>>>>>Sun Microsystems, Inc.
> >>>>>>>>>Blog: http://blogs.sun.com/arungupta
> >>>>>>>>>
> >>>>>>>>>---------------------------------------------------------------------
> >>>>>>>>>
> >>>>>>>>>To unsubscribe, e-mail: users-unsubscribe_at_jersey.dev.java.net
> >>>>>>>>>For additional commands, e-mail: users-help_at_jersey.dev.java.net
> >>>>>>>>>
> >>>>>>>>---
> >>>>>>>>Marc Hadley <marc.hadley at sun.com>
> >>>>>>>>CTO Office, Sun Microsystems.
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>---------------------------------------------------------------------
> >>>>>>>>To unsubscribe, e-mail: users-unsubscribe_at_jersey.dev.java.net
> >>>>>>>>For additional commands, e-mail: users-help_at_jersey.dev.java.net
> >>>>>>>>
> >>>>>>>--
> >>>>>>>Web Technologies and Standards
> >>>>>>>Sun Microsystems, Inc.
> >>>>>>>Blog: http://blogs.sun.com/arungupta
> >>>>>>>
> >>>>>>>---------------------------------------------------------------------
> >>>>>>>To unsubscribe, e-mail: users-unsubscribe_at_jersey.dev.java.net
> >>>>>>>For additional commands, e-mail: users-help_at_jersey.dev.java.net
> >>>>>>>
> >>>>>>---------------------------------------------------------------------
> >>>>>>To unsubscribe, e-mail: users-unsubscribe_at_jersey.dev.java.net
> >>>>>>For additional commands, e-mail: users-help_at_jersey.dev.java.net
> >>>>>>
> >>>>>--
> >>>>>Web Technologies and Standards
> >>>>>Sun Microsystems, Inc.
> >>>>>Blog: http://blogs.sun.com/arungupta
> >>>>
> >>>>>---------------------------------------------------------------------
> >>>>>To unsubscribe, e-mail: users-unsubscribe_at_jersey.dev.java.net
> >>>>>For additional commands, e-mail: users-help_at_jersey.dev.java.net
> >>>>---------------------------------------------------------------------
> >>>>To unsubscribe, e-mail: users-unsubscribe_at_jersey.dev.java.net
> >>>>For additional commands, e-mail: users-help_at_jersey.dev.java.net
> >>>>
> >>--
> >>Web Technologies and Standards
> >>Sun Microsystems, Inc.
> >>Blog: http://blogs.sun.com/arungupta
> >
> >
> >>---------------------------------------------------------------------
> >>To unsubscribe, e-mail: users-unsubscribe_at_jersey.dev.java.net
> >>For additional commands, e-mail: users-help_at_jersey.dev.java.net
> >
> >---------------------------------------------------------------------
> >To unsubscribe, e-mail: users-unsubscribe_at_jersey.dev.java.net
> >For additional commands, e-mail: users-help_at_jersey.dev.java.net
> >
>
> --
> Web Technologies and Standards
> Sun Microsystems, Inc.
> Blog: http://blogs.sun.com/arungupta
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe_at_jersey.dev.java.net
> For additional commands, e-mail: users-help_at_jersey.dev.java.net
>