curl -X POST -H "content-type: application/json" http://localhost:8081/api/post/book --data '{"aege":"aaegqE"}'
curl http://localhost:8081/api/get/books
curl http://localhost:8081/api/get/book/1
curl -X POST -H "content-type: application/json" http://localhost:8081/api/post/book --data '{"title":"aaegqE", "authorId": 1}'
curl -X PATCH -H "content-type: application/json" http://localhost:8081/api/update/book/2 --data '{"title":"abwbewe"}'