title: Null params in method of web-service
body: <p>I use Jersey for WS.
  I have the following method:</p>
  
  <pre><code>@Path("...")
  @POST
  public Response updateConfigs(@Context HttpServletRequest request, ....
          ConfigurationItemList itemList) {
      ...
  }
  </code></pre>
  
  <p>Where itemList is POST param. When I try to call this method with empty POST params, I get an exception:</p>
  
  <pre><code>[#|2012-10-12T14:08:52.623+0200|SEVERE|glassfish3.1.1|com.sun.jersey.spi.container.ContainerResponse|_ThreadID=25;_ThreadName=Thread-2;|The exception contained within MappableContainerException could not be mapped to a response, re-throwing to the HTTP container
  java.io.EOFException: No content to map to Object due to end of input
         at org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.java:2173)
         at org.codehaus.jackson.map.ObjectMapper._readValue(ObjectMapper.java:2106)
         at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1004)
         ...
  |#]
  
  [#|2012-10-12T14:08:52.624+0200|WARNING|glassfish3.1.1|javax.enterprise.system.container.web.com.sun.enterprise.web|_ThreadID=25;_ThreadName=Thread-2;|StandardWrapperValve[...ApplicationConfig]: PWC1406: Servlet.service() for servlet ....ApplicationConfig threw exception
  java.io.EOFException: No content to map to Object due to end of input
         at org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.java:2173)
         at org.codehaus.jackson.map.ObjectMapper._readValue(ObjectMapper.java:2106)
         at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1004)
         at org.codehaus.jackson.jaxrs.JacksonJsonProvider.readFrom(JacksonJsonProvider.java:410)
         ....
  |#]
  </code></pre>