无法使用JPA将java.sql.BLOB持久化到Oracle BLOB中

Question

I am trying to persist the image as a blob in oracle database(11g) using JPA(2.0)

Below is my entity class

@Entity
@Table(name="MyTable")
public class MyEntity implements Serializable {

@Column(name="IMAGE_BLOB")
private  Blob imageBlob;

public void setImageBlob(Blob imageBlob) {
this.imageBlob = imageBlob;
}

public Blob getImageBlob() {
return imageBlob;
}

}

Below is my code where am trying to set the blob

InputSteram fis = new FileInputStream("C://folder1/folder2/image1.jpg");
byte[] imageByteArray= IOUtils.toByteArray(fis);

Blob imageBlob = new SerialBlob(imageByteArray);

MyEntity myEntity = new MyEntity();
myEntity.setImageBlob(imageBlob ).

when i run the above code snippet and persist MyEntity into the database, I see all the values get properly persisted in the database except the IMAGE_BLOB column value which shows null, It dint throw any exception. I also verified that the imageBlob am trying to set is not null.

Could any one please help me with this issue.

Answer 1

@LOB  
@Column(name="IMAGE_BLOB")  
private  byte[] imageBlob;

It works well and I done it in Oracle DB also. So if you get the ClassCastException then there will be a problem in your Java code.