Error returning custom object via GET method - rest

Question

I am trying to run a simple example in Jersey which has a GET method and returns a Custom object.
on calling GET I am getting following error
MessageBodyWriter not found for media type=text/plain
I have looked into few answers on stackoverflow where they are suggesting it to put a default constructor and jackson dependency in pom.xml. I have already done that but no luck. Can some one please suggest what I am doing wrong.
Resource Class
#Path("customdatatyperesource")
public class CustomDataTypeResource {
#GET
public CustomResource1 get(#Context UriInfo ui) {
return new CustomResource1();
}
}
Custom Class
#XmlRootElement
public class CustomResource1 {
#XmlElement
String res;
public CustomResource1() { }
#Override
public String toString(){
return "Custom : "+res;
}
}
pom.xml
Thanks

Answer 1

So I figured out that error is not in the code but in the request sent.
When I send the request with header accept: text/plain
I am getting the error MessageBodyWriter not found for media type=text/plain
The resolution is accept header needs to match with what resource can produce.
In this case our resource is capable of producing XML or JSON
A better and more comprehensive way to write this code would be to put produce annotation on the methods.
#Produces(MediaType.TEXT_XML)
and put correct accept header such as
accept: application/json