Jersey returns 500 when trying to return an XML response

Question

I\'m trying to create my own RESTful WS application using Jersey 2.12 based from this article. I want to return an XML representation of a class depending on the id been pas

Answer 1

This happens when you don't provide a default no arg constructor to your JAXB bean. So in your case you should amend the class by adding one:

  public TestRestModel(){

    }

This is due to a requirement in the JSR-222:

existing types, authored by users, are required to provide a no arg constructor. The no arg constructor is used by an unmarshaller during unmarshalling to create an instance of the type.