Spring引导,hibernate将表数据持久化到db中
我创建了一个包含复合键的可嵌入类Spring引导,hibernate将表数据持久化到db中,hibernate,spring-boot,Hibernate,Spring Boot,我创建了一个包含复合键的可嵌入类 @Embeddable public class TaskCategoryPK implements Serializable{ @Column(name = "Task_taskId") private Long taskid; @Column(name = "Category_categoryId") private Long categoryid; public TaskCategoryPK() {} public TaskCategoryPK(L
@Embeddable
public class TaskCategoryPK implements Serializable{
@Column(name = "Task_taskId")
private Long taskid;
@Column(name = "Category_categoryId")
private Long categoryid;
public TaskCategoryPK() {}
public TaskCategoryPK(Long taskid,Long categoryid) {
this.taskid = taskid;
this.categoryid = categoryid;
}
public void setTaskid(Long taskid) {
this.taskid = taskid;
}
public void setCategoryid(Long categoryid) {
this.categoryid = categoryid;
}
public Long getTaskid() {
return taskid;
}
public Long getCategoryid() {
return categoryid;
}
}
我创建了映射到此复合键类的实体类
@Entity
@Table(name = "TaskCategoryMapping")
public class TaskCategoryMapping {
@EmbeddedId
private TaskCategoryPK taskcategorypk;
public TaskCategoryPK getTaskCategoryPK() {
return taskcategorypk;
}
public void setTaskCategoryPK(TaskCategoryPK taskCategoryPK) {
this.taskcategorypk = taskCategoryPK;
}
}
在控制器中,我试图通过资源将数据持久化到数据库中,但它引发了空指针异常。控制器处理
TaskCategoryPK taskCategoryPK = new TaskCategoryPK(1L,2L);
TaskCategoryMapping taskCategoryMapping = new TaskCategoryMapping();
taskCategoryMapping.setTaskCategoryPK(taskCategoryPK);
taskCategoryResource.save(taskCategoryMapping);
但我得到以下例外
您能添加BootController代码吗?嗨@rick,我没有将autowired添加到该存储库,这是导致问题的原因。Thnx。