BLOB convertion into jpg

Question

Hello,
I have asked about this before but I still haven't got it to work. The problem is getting a BLOB from oracle and then converting it into a .jpg file. My program only returns an empty file. If someone knows what's wrong with my code please let me know!
import java.sql.*;
import oracle.jdbc.driver.*;
import oracle.sql.*;
import java.math.BigDecimal;
import java.util.Map;
import java.io.*;
class InsertImage {
public static void main (String args [])
throws SQLException, IOException {
String user, pass, snum, namer;
int enumber;
user = "xxx";
pass = "xxxxxx";
     // Connect using the jdbc driver.
     DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver ());
     //get the connection to the ccdb database.
     OracleConnection conn = (OracleConnection)
     DriverManager.getConnection("jdbc:oracle:thin:@cactus.prism.gatech.edu:1525:ccdb",user,pass);
conn.setAutoCommit(false);
Statement stmt = conn.createStatement ();
String cmd = "select * from ImageTable";
ResultSet rset = stmt.executeQuery(cmd);
System.out.println("Select statement executed");
FileOutputStream outFile=null;
while(rset.next()){
//get the Blob locator
System.out.println("Entering the loop ");
String count = ((OracleResultSet)rset).getString(1);
BLOB blob = ((OracleResultSet)rset).getBLOB(2);
outFile = new FileOutputStream("vaf.jpg");
//get ready to accept binary file
int chunk = blob.getChunkSize();
System.out.print("The chunk size is " + chunk);
byte buffer[]= new byte[chunk];
int length;
InputStream instream = blob.getBinaryStream();
// Fetch data
while ((length = instream.read(buffer)) != -1) {
     outFile.write(buffer, 0, length);
outFile.close();

Answer 1

Hi Pal...
Do something like this....
//assuming that you go the connection and PreparedStatement
String sQuery = "select picture_column from picture_table
where picture_id='photo1'";
pstmt = dbConnection.prepareStatement(sQuery);
rs = pstmt.executeQuery();
if(rs.next())
InputStream in= rs.getBinaryStream(1);
//assuming you are saving the picture on root directry of drive D
FileOutputStream FOS =new FileOutputStream("d:\\photo1.jpg");
int iChunk;
while((iChunk = in.read()) != -1)
FOS.write(iChunk);
FOS.flush();
FOS.close();
in.close();
That should work and you have to catch the nesesory SqlExceptions and IOExceptions