Caused by: org.hibernate.AnnotationException: No identifier specified for entity
2018-01-14 13:30
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今天在测试 jpa 读取数据库时出现这错误，指示没有实体标识符
Caused by: org.hibernate.AnnotationException: No identifier specified for entity
根据Hinbernate的规范，一定要为实体类添加唯一的标识符，即主键id。在私有变量或set方法之上添加注解即可。
Caused by: org.hibernate.AnnotationException: No identifier specified for entity
根据Hinbernate的规范，一定要为实体类添加唯一的标识符，即主键id。在私有变量或set方法之上添加注解即可。
@Id @GeneratedValue private Integer categoryId;
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