hibernate-jpa

问题 In the code I have shared here Exception in thread "restartedMain" java.lang.reflect.InvocationTargetException Caused by: java.lang.NullPointerException I am getting new error. Could you please help me with this. org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'springLogging3Application': Unsatisfied dependency expressed through field 'factory'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating

问题 I am using Spring JPA. I have three entities Student, ClassRoom and School like below @Entity public class Student implements Serializable { private static final long serialVersionUID = 1L; @Id @Column(name="id") private int id; @Column(name="name") private String name; @Column(name="name") private int age; ... } @Entity public class ClassRoom implements Serializable { private static final long serialVersionUID = 1L; @Id @Column(name="id") private int id; @Column(name="name") private String

问题 my entity class is mentioned below:- public class ExportOrderInfo implements Serializable { private static final long serialVersionUID = 1L; @Id @Column(name = "CURRENT_ORDER_NUMBER") private Integer currentOrderNumber; @Id @Column(name = "ORG_CODE") private Integer orgCode; @Id @Column(name = "STIR_CD") private Integer stirCd; @Id @Column(name = "EXPIRE_DATE") private Date expireDate; @Column(name = "ENTERPRISE_CODE", insertable = false, updatable = false) private Integer enterpriseCode;