Loading Image from MS SQL

Question

Dear All, i got problem when i get an image from MS SQL and tried to output it to jsp page. See anyone would help!
Code segment for retrieve the image from MS SQL
String a = "SELECT POSTER FROM PP WHERE IMDB='111'";
ResultSet j = db1.executeQuery(a);
InputStream in =null;
while(j.next())
  in = j.getBinaryStream("POSTER");
ServletOutputStream out = resp.getOutputStream();
byte[] buf = new byte[1024];
int len =0;
while((len=in.read(buf))>=0)
    out.write(buf,0,len);
in.close();
out.close();
j.close();
db1.closeStatement();
db1.closeConnection();1.when the program reach
"in.read(buf)", it throws exception as below
***[SQLServer 2000 Driver for JDBC]Object has been closed.
2. i debug the programe and observed the valuable "in" after
code segment " in = j.getBinaryStream("POSTER");", i got this outline for the valuable "in"
"in"=BaseInoutStreamWrapper(id=896204)
~ closed =false
~ isOutputStream=true
~ maxBytesReturn=2147483647
~numBytesReturn= 0
~numTotalBytesInStream=-1
i was wondering the meaning for "numTotalBytesInStream=-1" is could not getting anything of the image from MS SQL ?
Is anyone got idea about this?
Many thanks for your attention.

Answer 1

With any resultSet, it scrolls until calling next() returns false.
At this point you are past the end of the record set - you have moved past the current record, and are not able to access it.
You need to move your image processing code into the first while loop.
In fact, I think you need to change that while loop to an if statement - there is only one record returned from this query?
Conncetion con = null;
Statment db1 = null;
ResultSet j = null;
try{
  String a = "SELECT POSTER FROM PP WHERE IMDB='111'";
  con = getConnectionFromSomewhere();
  db1 = con.createStatement();
  j = db1.executeQuery(a);
  // assume only one record is returned.               
  if (j.next()) {
    InputStream in = j.getBinaryStream("POSTER");
    ServletOutputStream out = resp.getOutputStream();
    byte[] buf = new byte[1024];
    int len =0;
    while((len=in.read(buf))>=0) {
      out.write(buf,0,len);
    in.close();
    out.close();
finally{               
  if (j!= null) j.close();
  if (db1!= null) db1.closeStatement();
  if (con!= null) con.closeConnection();
}