I am deploying my RESTful web application on jBoss EAP 6.1 (7.2.1Final) with Wink 1.2 and getting following exception on all the request;
<b>JBWEB000070: exception</b>
<pre>java.lang.NullPointerException
org.apache.wink.common.internal.http.Accept.valueOf(Accept.java:139)
org.apache.wink.server.internal.contexts.HttpHeadersImpl.getAcceptHeader(HttpHeadersImpl.java:152)
org.apache.wink.server.internal.contexts.HttpHeadersImpl.getAcceptableMediaTypes(HttpHeadersImpl.java:106)
org.apache.wink.server.internal.registry.ResourceRegistry.filterByProduces(ResourceRegistry.java:558)
org.apache.wink.server.internal.registry.ResourceRegistry.filterDispatchMethods(ResourceRegistry.java:482)
org.apache.wink.server.internal.registry.ResourceRegistry.findMethod(ResourceRegistry.java:359)
org.apache.wink.server.internal.handlers.FindResourceMethodHandler.handleResourceMethod(FindResourceMethodHandler.java:138)
org.apache.wink.server.internal.handlers.FindResourceMethodHandler.handleRequest(FindResourceMethodHandler.java:65)
org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:63)
org.apache.wink.server.internal.handlers.FindRootResourceHandler.handleRequest(FindRootResourceHandler.java:95)
org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:63)
The same application works OK on previous versions of jBoss like EAP 5.1 and old.
I have also captured the posted request using tcpmon and getting following information in headers;
GET /hothouse-iris/Hothouse.svc/ HTTP/1.1
Host: 127.0.0.1:9090
Connection: keep-alive
Authorization: Basic U1NPVVNFUjE6MTIzNDU2
Cache-Control: no-cache
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.69 Safari/537.36
Content-Type: application/atom+xml
Accept: */*
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-GB,en-US;q=0.8,en;q=0.6
Cookie: JSESSIONID=8D9FE5379FE7576610BB4B78A431AD10; __utma=96992031.2145502422.1381922298.1382004674.1382006170.4; __utmc=96992031; __utmz=96992031.1381922298.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)
I am using Chrome extension POSTMan to request my service and it works.
The problem is that initialization of Accept class does not actually happen, and the delegate field is null.
The RuntimeDelegate is an interface whose implementation should be specified in META-INF/service/javax.ws.rs.ext.RuntimeDelegate file which is searched on the class path.
wink-common.jar contains such a service file with the correct class name of the implementation but if some other service file with the same name is found on class path (on of the jars) before the correct one, we will have such a weird behavior.