Java数据库BLOB到Java中的InputStream？

Question

I made a Java function that takes an InputStream as an input. I have a oracle.sql.BLOB instance to pass to that function. How can I convert it to a InputStream ?

Do I need to re-write my function using a BLOB parameter, instead?

Answer 1

您还没有真正说过如何从数据库中获取数据，但您可以使用ResultSet.getBinaryStream()来获取InputStream ，或者调用getBlob()来获取Blob ，然后使用Blob上的getBinaryStream()来获取一条小溪。

Answer 2

Declare your Java parameter of type oracle.sql.BLOB as per the "Mapping Datatypes" documentation . Then, you call getBinaryStream() on that BLOB object to obtain your InputStream .