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
- application/x-zip-compressed attachment: json.zip