java - 覆盖 Pageable findAll 以在 Spring Data Rest 中选择更少的列

Question

如何覆盖 spring 数据存储库以在转到从 spring data rest 中的/api 页面发现的页面时仅选择选定的列。

我添加了 findAll 如下 -

public interface UserRepository extends BaseRepository<User, Integer>, UserRepositoryCustom {

    @Query("select u from User u where email = :email and password = :password")
    @Cacheable(value = "user-cache", key = "#user.login")
    @RestResource(exported = false)
    public User findUserByEmailAndPassword(@Param("email") String email, @Param("password") String password);

    @RestResource(rel = "byEmail", path = "byEmail")
    public User findUserByEmail(@Param("email") String email);

    @RestResource(rel = "byPhone", path = "byPhone")
    public User findUserByPhone(@Param("phone") String phone);

     @Override 
     @Query("select u.id,u.email,u.phone from User u ")
     public Page<User> findAll(Pageable pageable);
}

/api/users 出现错误 -

{"cause":null,"message":"PersistentEntity must not be null!"}

Answer 1

我在与 User 相同的包中创建了一个 UserSummaryProjection 类

@Projection(name = "summary", types = User.class)
public interface UserSummaryProjection {

    Integer getId();

    String getEmail();

}

然后，访问 /api/users 或 /users/3?projection=summary 可以在不更改存储库的情况下获得所需的结果。