Not able to create query findByUserId(Long userId) I have tried findByUserId(Long user_id) findByuser_id(Long user_id) findByUser_id(Long user_id)

CodePudding user response：

Your JPA method, as currently named, expects a user ID variable name of userId, in camel case. Use this definition:

@Column(name="user_id")
private Long userId;

Then use findByUserId(Long userId) as the JPA repo method name as you were already doing. Note that the @Column annotation directs JPA/Hibernate to create the table column with the name user_id.