Question

我是初次使用数据jpa并尝试使用它但面临org.springframework.data.mapping.PropertyReferenceException的问题：找不到类型User的属性名称！有人可以告诉我可以做些什么吗？我正在努力但无法找到解决方案

**Service**
public interface UserService {
        Page<User> findAllUsers(); 
    }

**Service Impl** where I am trying to implement the service methods            
@Service("userService")
@Transactional
public class UserServiceImpl implements UserService{
    /*@Autowired*/
    @Qualifier("userDao")
    private  final UserDao dao;

        @Autowired
        public UserServiceImpl(UserDao dao) {
            this.dao = dao;
        }
        private static final AtomicLong counter = new AtomicLong();

        private static List<User> users;
                public Page<User> findAllUsers() {
                        return dao.findAll(pageRequest);
                }

**DAO**
public interface UserDao extends JpaRepository<User, Long>  {
}

**User**    

      @Entity
            @Table(name="USERAG")
            public class User implements Serializable {
                @Id
                @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "users_seq")
                        private long id;

                @Column(name = "NAME", nullable = true)
                private String username;

                @Column(name = "ADDRESS", nullable = true)
                private String address;

                @Column(name = "EMAIL", nullable = true)
                private String email;

Answer 1

我认为您删除了DAO方法。我好像记得你订购了＃34; name＆＃34;。您的实体没有＆＃34; name＆＃34;而不是＆＃34; username＆＃34;。简而言之，它正在寻找＆＃34; name＆＃34;你的实体（你没有）

jpa的属性引用异常

1 个答案: