Unable to consume RestFul web service using jersey client - web-services

Question

My service side code is implemented using Resteasy
#GET
#Path("/ad-details/{query}")
#Produces("application/json")
public String getAdDetails(#PathParam("query") String id)
{
//Validator v = ESAPI.encoder().encodeForHTML(id);
//String id1 = ;
//System.out.println(ESAPI.encoder().encodeForHTML(ESAPI.encoder().canonicalize(id1)));
String adDetailsResult = "";
System.out.println("reached Service");
AdServiceProvider ad = new AdServiceProviderImpl();
AdDetails details = ad.getAdDetailsById(Long.parseLong(id.trim()));
adDetailsResult = gson.toJson(details);
//System.out.println(adDetailsResult);
//adDetailsResult = ESAPI.encoder().encodeForHTML(ESAPI.encoder().canonicalize(adDetailsResult));
System.out.println(adDetailsResult);
return adDetailsResult;
}
and my client side code consuming this service is using jersey api
and the code is as mentioned below.
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
System.out.println("reached servlet");
response.setContentType("application/json");
String adId = request.getParameter("adId");
System.out.println(adId);
Client client = Client.create();
WebResource wr = client.resource("http://localhost:8080/com.pandora.services/service");
String adDetailsResult = wr.path("ad-details").path(adId).get(String.class);
PrintWriter out = response.getWriter();
out.print(adDetailsResult);
}'`
however when i make a call i am getting the following error
WARN org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher Failed to parse request.
java.lang.IllegalArgumentException: Error parsing media type '*; q=.2'
at com.sun.jersey.core.impl.provider.header.MediaTypeProvider.fromString(MediaTypeProvider.java:80)
at com.sun.jersey.core.impl.provider.header.MediaTypeProvider.fromString(MediaTypeProvider.java:53)
at javax.ws.rs.core.MediaType.valueOf(MediaType.java:173)
at org.jboss.resteasy.util.MediaTypeHelper.parseHeader(MediaTypeHelper.java:204)
at org.jboss.resteasy.plugins.server.servlet.ServletUtil.extractAccepts(ServletUtil.java:119)
at org.jboss.resteasy.plugins.server.servlet.ServletUtil.extractHttpHeaders(ServletUtil.java:82)
at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:186)
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:55)
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:50)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)
Caused by: java.text.ParseException: Expected separator '/' instead of ';'
at com.sun.jersey.core.header.reader.HttpHeaderReader.nextSeparator(HttpHeaderReader.java:117)
at com.sun.jersey.core.impl.provider.header.MediaTypeProvider.valueOf(MediaTypeProvider.java:91)
at com.sun.jersey.core.impl.provider.header.MediaTypeProvider.fromString(MediaTypeProvider.java:78)
... 21 more
May 10, 2011 7:14:50 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet Resteasy threw exception
java.lang.NullPointerException
at org.jboss.resteasy.plugins.server.servlet.HttpServletInputMessage.(HttpServletInputMessage.java:60)
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.createHttpRequest(HttpServletDispatcher.java:71)
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.createResteasyHttpRequest(HttpServletDispatcher.java:60)
at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:197)
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:55)
at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:50)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)
May 10, 2011 7:14:50 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet AdDetailsServlet threw exception
com.sun.jersey.api.client.UniformInterfaceException: GET http://localhost:8080/com.pandora.services/service/ad-details/1 returned a response status of 500
at com.sun.jersey.api.client.WebResource.handle(WebResource.java:565)
at com.sun.jersey.api.client.WebResource.get(WebResource.java:182)
at com.pandora.client.servlets.AdDetailsServlet.doPost(AdDetailsServlet.java:48)
at com.pandora.client.servlets.AdDetailsServlet.doGet(AdDetailsServlet.java:34)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)
where am i making the mistake ??
Thanks

Answer 1

The error message is this:
Error parsing media type '*; q=.2'
Which makes me think I should be looking for problems with some sort of media-type-related header of the request from the client. Perhaps you should specify a MIME type for the response. It looks like you expect the service to return JSON, so how about specifying the Accept header in the request?
Client client = Client.create();
WebResource wr =
client.resource("http://localhost:8080/com.pandora.services/service");
String adDetailsResult = wr.path("ad-details").path(adId)
.accept(MediaType.APPLICATION_JSON).get(String.class);