hibernate中delete()方法報錯處理方法
阿新 • • 發佈:2019-01-01
@Override
public void del(Picture picture) {
session.beginTransaction();
System.out.println(picture.getId());
session.delete(picture);
System.out.println("刪除資料");
session.getTransaction().commit();
public void del(Picture picture) {
session.beginTransaction();
System.out.println(picture.getId());
session.delete(picture);
System.out.println("刪除資料");
session.getTransaction().commit();
}
在執行時session.delete()出錯,
最後的解決辦法是:
新增一行程式碼: picture=(Picture)session.load(Picture.class, picture.getId());
@Override
public void del(Picture picture) {
session.beginTransaction();
System.out.println(picture.getId());
picture=(Picture)session.load(Picture.class, picture.getId());
session.delete(picture);
System.out.println("刪除資料");
session.getTransaction().commit();
}
最後就解決了,可以從資料庫刪除資料了