Question

此代码有问题

public interface CharityRepository extends CrudRepository<Charity,Long> {

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

抛出异常

org.springframework.beans.factory.UnsatisfiedDependencyException：在文件[D：\ IdeaProjects \ maraphonskills（3）\ target \ classes \ com \ maraphon \ maraphonskills \ controllers \ AdminController.class中定义名称为'adminController'的bean创建错误]：通过构造函数参数0表示不满意的依赖关系；嵌套的异常是org.springframework.beans.factory.UnsatisfiedDependencyException：在文件[D：\ IdeaProjects \ maraphonskills（3）\ target \ classes \ com \ maraphon \ maraphonskills \ service \ CharityServiceImpl.class中创建名称为'charityServiceImpl'的bean时出错]：通过构造函数参数0表示不满意的依赖关系；嵌套的异常是org.springframework.beans.factory.BeanCreationException：创建名称为'charityRepository'的bean时出错：调用init方法失败；嵌套的异常是java.lang.IllegalArgumentException：方法公共抽象java.lang.Short com.maraphon.maraphonskills.repository.CharityRepository.totalCharitySum（）的查询验证失败！

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；   嵌套异常为   org.springframework.beans.factory.BeanCreationException：错误   创建名称为'charityRepository'的bean：初始化方法的调用   失败嵌套的异常是java.lang.IllegalArgumentException：   验证方法公共抽象java.lang.Short的查询失败   com.maraphon.maraphonskills.repository.CharityRepository.totalCharitySum（）！

由以下原因引起：org.springframework.beans.factory.BeanCreationException：创建名称为'charityRepository'的bean时出错：调用init方法失败；嵌套的异常是java.lang.IllegalArgumentException：方法公共抽象java.lang.Short com.maraphon.maraphonskills.repository.CharityRepository.totalCharitySum（）的查询验证失败！

原因：java.lang.IllegalArgumentException：方法公共抽象java.lang.Short com.maraphon.maraphonskills.repository.CharityRepository.totalCharitySum（）的查询验证失败！

原因：java.lang.NullPointerException：空

但是此代码可以正常工作

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

@修改无济于事，这可能是什么问题？

慈善机构代码

 @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<>();
    }

注册代码

    @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。

问题出在 CharityRepository 界面中使用小写的SponsorSum之间：

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

慈善类中的大写字母：

private Short SponsorSum;

在两种情况下都使用相同的情况，它将解决您的问题。

JPA @Query java.lang.IllegalArgumentException：

1 个答案: