字节数组到Java中的Blob

Question

I have a database in mysql. In this I have a table which is storing image in blob format. From my Java program I want to insert a new image into the table. But When I tried to convert a byte[] to blob using

java.sql.Blob blob=null;
blob.setBytes(1, myByte );

I am getting null pointer exception.

Again tried by converting:

 Blob blob = Hibernate.createBlob(bytes);

But here also got exception wrong format.

Answer 1

if you use this code:

java.sql.Blob blob=null;
blob.setBytes(1, myByte );

blob is null. You have to create a new Blob Object like:

Blob blob = new SerialBlob(myByte );

and then you can store it.