JPA @Query java.lang.IllegalArgumentException：

Question

这段代码有问题

public interface CharityRepository extends CrudRepository<Charity,Long> {

  @Query("select sum(sponsorSum) from Charity")
  Integer totalCharitySum();
}

抛出异常

org.springframework.beans.factory.UnsatisfiedDependencyException：创建文件 [D:\IdeaProjects\maraphonskills(3)\target\classes\com\maraphon\maraphonskills\controllers\AdminController.class 中定义的名称为“adminController”的 bean 时出错]：通过构造函数参数0表示的不满足的依赖关系；嵌套异常是 org.springframework.beans.factory.UnsatisfiedDependencyException: Error Creating bean with name 'charityServiceImpl' defined in file [D:\IdeaProjects\maraphonskills(3)\target\classes\com\maraphon\maraphonskills\service\CharityServiceImpl.class ]：通过构造函数参数0表示的不满足的依赖关系；嵌套异常是 org.springframework.beans.factory.BeanCreationException：创建名为 'charityRepository' 的 bean 时出错：调用 init 方法失败；嵌套异常是 java.lang.IllegalArgumentException: Validation failed for query for public abstract java.lang.Short com.maraphon.maraphonskills.repository.CharityRepository.totalCharitySum()！

原因： org.springframework.beans.factory.UnsatisfiedDependencyException： 创建文件中定义的名称为“charityServiceImpl”的 bean 时出错 [D:\IdeaProjects\maraphonskills(3)\target\classes\com\maraphon\maraphonskills\service\CharityServiceImpl.class]： 通过构造函数参数 0 表示的不满足的依赖关系； 嵌套异常是 org.springframework.beans.factory.BeanCreationException：错误 创建名为 'charityRepository' 的 bean：调用 init 方法 失败的;嵌套异常是 java.lang.IllegalArgumentException： 查询方法 public abstract java.lang.Short 的验证失败 com.maraphon.maraphonskills.repository.CharityRepository.totalCharitySum()！

原因：org.springframework.beans.factory.BeanCreationException：创建名为“charityRepository”的bean时出错：调用init方法失败；嵌套异常是 java.lang.IllegalArgumentException: Validation failed for query for public abstract java.lang.Short com.maraphon.maraphonskills.repository.CharityRepository.totalCharitySum()！

原因：java.lang.IllegalArgumentException：查询方法 public abstract java.lang.Short com.maraphon.maraphonskills.repository.CharityRepository.totalCharitySum() 验证失败！

原因：java.lang.NullPointerException: null

但是这段代码运行良好

public interface CharityRepository extends CrudRepository<Charity,Long> {
  @Query("select sum(sponsorTarget) from Registration")
  Short totalSum();
}

@Modifying 没有帮助。可能是什么问题？

慈善守则

 @Entity
@EqualsAndHashCode(exclude = "registrations")
@Data
public class Charity {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String name;
    @Lob
    private String description;
    private String fileName;
    private Short SponsorSum;

    @OneToMany(mappedBy = "charity")
    public Set<Registration> registrations = new HashSet<>();
    }

注册码

    @Entity
@EqualsAndHashCode(exclude = "sponsorShips")
@Data
public class Registration {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @ManyToOne
    public Runner runner;
    private String registrationDateTime;
    @ManyToOne
    public Charity charity;
    @ManyToOne
    public RaceKitOption raceKitOption;
    @ManyToOne
    public RegistrationStatus registrationStatus;

    private Short sponsorTarget;
    @OneToMany(mappedBy = "registration")
    public Set<SponsorShip> sponsorShips = new HashSet<>();
   // public RegistrationEvent registrationEvent;
}

Answer 1

提示：Java 区分大小写。

问题在于您的 CharityRepository 界面中使用小写赞助商Sum：

@Query("select sum(sponsorSum) from Charity")

Charity 类中的大写字母：

private Short SponsorSum;

在两者中使用相同的案例，它会解决您的问题。