Android Retrofit return status 500 internal server error

Question

I am using Retrofit like this to get all the books and delete all the books.

 @GET(\"/books\")
    BookListResponse getAllBooks();
    @DELETE(\"/clean\")
           


        

Answer 1

Update
In Retrofit 2.1 the request builder has changed so you have to specify header in the retrofit interface methods

@Headers("Accept: application/json") @GET("products") Call getAllProducts();