Database Blob data type to String, blob Data Type string

Database Blob data type to String, blob Data Type string

Blob data is a large object for storage.Data Type, Generally stores binary data, so it is accessed in bytes.

First, judge whether the blob data is empty, and then read the data using the input stream. The specific code is as follows:

 

1 String content = null; 2 try {3 4 if (image! = Null) {5 InputStream is = image. getBinaryStream (); 6 byte [] B = new byte [is. available ()]; 7 is. read (B, 0, B. length); 8 content = new String (B); 9} 10 System. out. println (content); 11} catch (IOException e) {12 e. printStackTrace (); 13}