错误:org.hibernate.InstantiationException: No default constructor for entity: : com.springboot.jpa.entity.User
解决方案:
在相应的实体类中,创建一个无参数的构造方法即可。
@Entity @Table(name = "tb_users") public class User { @Id @GeneratedValue(strategy = GenerationType.IDENTITY)// 自增主键 private Integer id; @Column(name = "name") private String name; @Column(name = "age") private Integer age; @Column(name = "sex") private String gender;
//解决方案:
public User() { }