Insertingand retrieving images in database using jdbc

Question

i am new to jsp.i have to store and retrieve image files using oracle 8i.Then i have to display it using jsp.
my code for storing image is
package sample;
import oracle.jdbc.driver.*;
import oracle.sql.*;
import java.sql.*;
import java.io.*;
import java.awt.image.*;
import java.awt.*;
public class storephoto{
public static void main(String[] args){
String filename = "C:/Documents and Settings/user/Desktop/five.gif";
Connection conn = null;
try{
Class.forName("oracle.jdbc.driver.OracleDriver");
conn=DriverManager.getConnection("jdbc:oracle:thin:@10.1.4.228:1521:data","system","manager");
conn.setAutoCommit(false);
Statement st = conn.createStatement();
int b= st.executeUpdate("insert into bfiles values('"+filename+"', empty_blob())");
ResultSet rs= st.executeQuery("select * from bfiles for update");
rs.next();
BLOB blob=((oracle.jdbc.driver.OracleResultSet)rs).getBLOB(2);
FileInputStream instream = new FileInputStream(filename);
System.out.println("instream="+instream);
OutputStream outstream = blob.getBinaryOutputStream();
System.out.println("outstream="+outstream);
int chunk = blob.getChunkSize();
System.out.println("chunk="+chunk);
byte[] buff = new byte[chunk];
int le;
while( (le=instream.read(buff)) !=-1)
System.out.println(le);
outstream.write(buff,0,le);
System.out.println(buff);
instream.close();
outstream.close();
conn.commit();
conn.close();
conn = null;
System.out.println("Inserted.....");
catch(Exception e){
System.out.println("exception"+e.getMessage());
e.printStackTrace();
}//catch
This code works fine & something gets stored in the buffer.but while rereiving nothing gets retreived.i cannot retrieve the image file
my code for retreiving is
package sample;
import java.sql.*;
import java.io.*;
import java.awt.*;
import oracle.sql.BLOB;
public class retphoto
public static void main(String a[])
String fileName ="C:/Documents and Settings/user/Desktop/five.gif";
try
Driver driver = new oracle.jdbc.driver.OracleDriver();
DriverManager.registerDriver(driver);
Connection con = DriverManager.getConnection("jdbc:oracle:thin:@10.1.4.228:1521:data", "system", "manager");
File file = new File("C:/Documents and Settings/user/Desktop/sa1.gif");
FileOutputStream targetFile= new FileOutputStream(file); // define the output stream
PreparedStatement pstmt = con.prepareStatement("select filecontent from bfiles where filename= ?");
pstmt.setString(1, fileName);
ResultSet rs1 = pstmt.executeQuery();
rs1.next();
InputStream is = rs1.getBinaryStream(1);
System.out.println(is);
byte[] buff = new byte[1024];
int i = 0;
while ((i = is.read(buff)) != -1) {
System.out.println("hai");
System.out.println(i);
targetFile.write(buff, 0, i);
System.out.println("Completed...");
rs1.close();
is.close();
targetFile.close();
pstmt.close();
con.close();
catch(Exception e)
System.out.println(e);
}

Answer 1

Thanks for ur help:
another Q:
in my GUI i have a button called Insert. but can't update my database table unless i create textField(e.g Firstname, Surname..ect..), so that when I click Insert button in actionEvent it will bring up popup which have field name in which i am going to insert new records.
so what iam trying to say is, how iam going to tell the actionEvent to trigger this.
the following is my code
public void actionPerformed(ActionEvent event)
ExamResults exam= new ExamResults ();      
String studentId = studentTextField.getText();
if (event.getSource() == insert) //if insert is clicked
Thanks