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  1. WildFly
  2. WFLY-20556

Json binding : fields after polymorphic field are null

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    • Icon: Bug Bug
    • Resolution: Done
    • Icon: Major Major
    • 34.0.0.Final
    • 29.0.1.Final
    • EE
    • None
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      To deserialize the text, one can use a servlet :
       

      @SuppressWarnings("serial")
@WebServlet("/test")
public class HelloWorldServlet3 extends HttpServlet {
 
@Override
protectedvoid doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
String s = "{\n"
+ " \"@type\": \"DataRequest\",\n"
+ " \"description\": \"Fetch yesterday prices\",\n"
+ " \"formatting\": {\n"
+ " \"@type\": \"MediaType\",\n"
+ " \"outputMediaType\": \"application/json\"\n"
+ " },\n"
+ " \"identifier\": \"uNrreFadSZPc\"\n"
+ "}";
Request request = JsonbBuilder.create().fromJson(s, Request.class);
resp.getWriter().append("identifier is: " + String.valueOf(request.getIdentifier()));
}

       

       

      {color:#000000}}

      Show
      To deserialize the text, one can use a servlet :   @SuppressWarnings( "serial" ) @WebServlet( "/test" ) public class HelloWorldServlet3 extends HttpServlet {   @Override protectedvoid doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { String s = "{\n" + " \" @type\ ": \" DataRequest\ ",\n" + " \" description\ ": \" Fetch yesterday prices\ ",\n" + " \" formatting\ ": {\n" + " \" @type\ ": \" MediaType\ ",\n" + " \" outputMediaType\ ": \" application/json\ "\n" + " },\n" + " \" identifier\ ": \" uNrreFadSZPc\ "\n" + "}" ; Request request = JsonbBuilder.create().fromJson(s, Request.class); resp.getWriter().append( "identifier is: " + String .valueOf(request.getIdentifier())); }     {color:#000000}}
    • Low
    • ---
    • ---

      Deserialization of this text leaves the field "identifier" null :

      String s = "{\n"
+ " \"@type\": \"DataRequest\",\n"
+ " \"description\": \"Fetch yesterday prices\",\n"
+ " \"formatting\": {\n"
+ " \"@type\": \"MediaType\",\n"
+ " \"outputMediaType\": \"application/json\"\n"
+ " },\n"
+ " \"identifier\": \"uNrreFadSZPc\"\n"
+ "}";
Request request = JsonbBuilder.create().fromJson(s, Request.class);

      But if I change the order and put "formatting" at the end, it works : identifier is not null.
       

      String s = "{\n"
+ " \"@type\": \"DataRequest\",\n"
+ " \"description\": \"Fetch yesterday prices\",\n"
+ " \"identifier\": \"uNrreFadSZPc\",\n"
+ " \"formatting\": {\n"
+ " \"@type\": \"MediaType\",\n"
+ " \"outputMediaType\": \"application/json\"\n"
+ " }\n"
+ "}";

       

      Here are my classes :

      @JsonbTypeInfo({
  @JsonbSubtype(alias = "DataRequest", type = RequestData.class)
})
public class Request {
	@JsonbProperty("description")
	private String description;
	@JsonbProperty("identifier")
	private String identifier;
	@JsonbProperty("formatting")
	private Formatting formatting;
//setter, getter
}

public class RequestData extends Request {
}

@JsonbTypeInfo({
  @JsonbSubtype(alias = "MediaType", type = FormattingMediaType.class)
})
public class Formatting {
}
public class FormattingMediaType extends Formatting {
	@JsonbProperty("outputMediaType")
	private String outputMediaType;
//public getter/setter
}

       

              jperkins-rhn James Perkins
              grigouille Frédéric Jean-Prost (Inactive)
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                Created:
                Updated:
                Resolved: