title: Java SOAP - Product Advertising API - Response Empty
body: <p>I've created a Search-Request to the amazon product API but it's response is empty.
  Can you give me a hint what's wrong with my code?</p>
  
  <p>Code:</p>
  
  <pre><code>String awsAccessKeyID = "&lt;AWS-KEY&gt;";
  String test = "&lt;ASSOCIATE-TAG&gt;"; 
  
  AWSECommerceService service = new AWSECommerceService();
  service.setHandlerResolver(new AwsHandlerResolver("&lt;SECRET-KEY&gt;"));
  
  AWSECommerceServicePortType port = service.getAWSECommerceServicePort();
  
  ItemSearch ItemSearch = new ItemSearch();
  
  ItemSearch.setAWSAccessKeyId(awsAccessKeyID);
  ItemSearch.setAssociateTag(test);
  
  ItemSearchRequest SearchRequest = new ItemSearchRequest();
  
  java.util.List&lt;ItemSearchRequest&gt; list = ItemSearch.getRequest();
  
  list.add(SearchRequest);
  
  SearchRequest.setSearchIndex("All");
  
  
  SearchRequest.setKeywords("nas");
  
  ItemSearch.getRequest().add(SearchRequest);
  ItemSearch.setMarketplaceDomain("https://ecs.amazonaws.de/onca/xml?Service=AWSECommerceService");
  
  
  SearchRequest.getResponseGroup().add("Large");
  
  Holder&lt;OperationRequest&gt; operationrequest = new Holder&lt;OperationRequest&gt;();
  
  Holder&lt;java.util.List&lt;Items&gt;&gt; items = new Holder&lt;java.util.List&lt;Items&gt;&gt;();
  
  port.itemSearch(ItemSearch.getMarketplaceDomain(), ItemSearch.getAWSAccessKeyId(), ItemSearch.getAssociateTag(), ItemSearch.getXMLEscaping(), "True", ItemSearch.getShared(), ItemSearch.getRequest(), operationrequest, items);
  
  java.util.List&lt;Items&gt; result = items.value;
  System.out.println(result);
  </code></pre>
  
  <p>The ResultSet is still empty but no errors occured....</p>