Hi Paul,
comments inline...
Paul Sandoz wrote:
> Hi Ayub,
>
> The example does not work because the Jersey runtime currently does
> not support the injection of references to EJBs, hence the
> FlowerService2Resource.ejbRef field is null.
>
> I don't want to implement all the EE compliant support in Jersey and
> instead want to defer to an IoC framework like Spring, Guice or
> WebBeans for such support where such support can be plugged in and
> Jersey does not bind to a particular IoC framework.
I have seen your blog earlier on integration jersey with spring
(
http://blogs.sun.com/sandoz/entry/integrating_jersey_and_spring_take), and
also marc's blog
(
http://weblogs.java.net/blog/mhadley/archive/2007/09/integrating_jer.html).
I will try it.
>
> BTW if you want to improve the example for returning an image you
> could write your own message body writer that supports writing of the
> Image class.
>
> @GET
> @ProduceMime("image/png")
> public String getImage(String name) throws IOException {
> byte[] bytes = ejbRef.getFlower(name);
> return getImage(bytes, false);
> }
>
> The Mandel example in the Jersey distribution has a message body
> writer that does just that.
>
> In fact i would write the RESTful service differently to that of the
> FlowerService Web service, and would return a list of links for the
> request of the list of the thumbnail images maybe as HTML and XML, or
> if you want to embed the list of images i would use multipart mime, or
> you can do all three :-)
Excellent!
>
> Paul.
Thanks
Ayub
>
>
> Ayub Khan wrote:
>> Hi Paul,
>>
>> Using NB6.1 m1 (jersey 0.5), I created a JAX-WS service that talks to
>> a Session EJB, following the tutorial (steps 1-3, ie till testing the
>> app)
>>
>> http://www.netbeans.org/kb/60/websvc/ejb.html#Exercise_3.
>>
>> Found JAX-WS to EJB working fine.
>>
>> So now I wanted to test the scenario with a J2EE app
>> 'FlowerApplication' containing EJB module 'FlowerAlbum' and REST web
>> project 'FlowerService2'.
>>
>> Steps
>> 1. I created a web app 'FlowerService2' with a single Resource as
>> follows.
>> 2. Also added library reference to the EJB module FlowerAlbum.
>> 3. Created a new J2EE app 'FlowerApplication2' , then wrapped EJB
>> module 'FlowerAlbum' with 'FlowerService2' REST web project.
>> 4. Deployed J2EE app.
>> 5. Test the url
>> 'http://localhost:8080/FlowerService2/resources/flowerService2/
>>
>> I got a NPE at line 'byte[] bytes = ejbRef.getFlower(name);', in the
>> getImage REST method, what
>> could be the problem.
>>
>> flower.album.FlowerService2Resource.java
>> =====================================
>>
>> @Path("flowerService2")
>> public class FlowerService2Resource {
>> @HttpContext
>> private UriInfo context;
>> @EJB
>> private FlowerRemote ejbRef;
>>
>> /** Creates a new instance of FlowerService2Resource */
>> public FlowerService2Resource() {
>> }
>>
>> /**
>> * Retrieves representation of an instance of
>> flower.album.FlowerService2Resource
>> * @return an instance of java.lang.String
>> */
>> @GET
>> @ProduceMime("text/html")
>> public String getImage(String name) {
>> try {
>> byte[] bytes = ejbRef.getFlower(name);
>> Image img = getImage(bytes, false);
>> return img.getSource().toString();
>> } catch (IOException ex) {
>>
>> Logger.getLogger(FlowerService2Resource.class.getName()).log(Level.SEVERE,
>> null, ex);
>> }
>> return null;
>> }
>> private Image getImage(byte[] bytes, boolean isThumbnail) throws
>> IOException {
>> ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
>> Iterator readers = ImageIO.getImageReadersByFormatName("png");
>> ImageReader reader = (ImageReader) readers.next();
>> Object source = bis; // File or InputStream
>> ImageInputStream iis = ImageIO.createImageInputStream(source);
>> reader.setInput(iis, true);
>> ImageReadParam param = reader.getDefaultReadParam();
>> if (isThumbnail) {
>> param.setSourceSubsampling(4, 4, 0, 0);
>> }
>> return reader.read(0, param);
>> }
>> }
>> =================================
>>
>> Thanks
>> Ayub
>>
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>
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