In order to use crud repository in spring boot, all you have to do is extend the crud repository which in turn extends the Repository interface as a result you will not need to implement your own methods.
Create a simple spring boot application which includes below dependency:
spring-boot-starter-data-jpa, spring-boot-starter-data-rest
And extend your repository interface as shown below :
package com.freetimelearning;
import java.util.List;
import org.springframework.data.repository.CrudRepository;
import org.springframework.data.rest.core.annotation.RepositoryRestResource;
@RepositoryRestResource
public interface GreatLearning extends CrudRepository<Candidate, Long>
{
public List<Candidate> findById(long id);
//@Query("select s from Candidate s where s.age <= ?")
public List<Candidate> findByAgeLessThanEqual (long age);
}
