Retrieve all books :
localhost:8080/books
Retrieve book by id :
localhost:8080/books/{id}
Add book :
localhost:8080/books
Update book :
localhost:8080/books
Delete book :
localhost:8080/books/{id}
Retrieve all members :
localhost:8080/members
Retrieve member by id :
localhost:8080/members/{id}
Add member :
localhost:8080/members
Update member :
localhost:8080/members
Delete member :
localhost:8080/members/{id}