Entity not posting to restful service - jackson

Question

I'm having trouble posting a request to a restfull service.
It looks like my Entity is not getting converted into json correctly.
I get a 400 Bad request response.
I suspect it's the List of DateTimeRange objects causing the issue - as I have a very similar request that works but all the pojos properties are Strings.
Do I need to annotate my Entity to enable marshalling to/from json for Lists and my custom DateTimeRange?
String actionUrl = buildUrl( myResftullUrlTest );
Client client = ClientBuilder.newClient().register( JacksonJsonProvider.class );
Builder target = client.target( actionUrl ).request();
CreateWebinarRequest createWebinarRequest = new CreateWebinarRequest();
createWebinarRequest.setDescription("Test1 desc");
createWebinarRequest.setSubject("Test1 subject")
createWebinarRequest.setTimeZone("Europe/Dublin")
List<DateTimeRange> dateTimeRangeParam = new ArrayList<DateTimeRange>();
DateTimeRange dateTimeRange = new DateTimeRange();
dateTimeRange.setStartTime( "2016-11-03T08:34:12" );
dateTimeRange.setEndTime( "2016-11-03T09:34:12" );
dateTimeRangeParam.add( dateTimeRange );
createWebinarRequest.setTimes( dateTimeRangeParam );
Response response = null;
switch ( goToTrainingRequestData.getRequestType() ) {
case HTTP_POST :
response = target.buildPost( Entity.json(createWebinarRequest) ).invoke();
...
}
}
CreateWebinarRequest:
public class CreateWebinarRequest implements Serializable {
private String subject = null;
private String description = null;
private List<DateTimeRange> times = new ArrayList<DateTimeRange>();
private String timeZone = null;
public String getSubject() {
return subject;
}
public void setSubject( String subject ) {
this.subject = subject;
}
public String getDescription() {
return description;
}
public void setDescription( String description ) {
this.description = description;
}
public List<DateTimeRange> getTimes() {
return times;
}
public void setTimes( List<DateTimeRange> times ) {
this.times = times;
}
public String getTimeZone() {
return timeZone;
}
public void setTimeZone( String timeZone ) {
this.timeZone = timeZone;
}
}
DateTimeRange:
public class DateTimeRange {
private String startTime = null;
private String endTime = null;
public String getStartTime() {
return startTime;
}
public void setStartTime( String startTime ) {
this.startTime = startTime;
}
public String getEndTime() {
return endTime;
}
public void setEndTime( String endTime ) {
this.endTime = endTime;
}
}

Answer 1

Problem solved guys and gals!
Nothing wrong with any data marshalling, I got the detailed response from server with:
String error = response.readEntity( String.class );
And it was a boo boo on my behalf!
{"errorCode":"RequestValidationError","description":"Request contains invalid parameters. See validationErrorCodes for specific errors.","Details":"times cannot be in past","incident":"6100682426566883853","validationErrorCodes":[{"code":"requestStartTimeInPast","description":"times cannot be in past"}]}