spring-boot+jpa 主外键关联查询

 public @interface OneToOne {

    
     Class targetEntity() default void.class;
    
  
    
     CascadeType[] cascade() default {};
    
  
    
     FetchType fetch() default FetchType.EAGER;
    
  
    
     boolean optional() default true;
    
  
    
     String mappedBy() default "";
    
  
    
     boolean orphanRemoval() default false;
    
 }
    
    
    
    

 public @interface JoinColumn {

    
  
    
     String name() default "";
    
     Stri