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HOW TO Upload files to db (postgres) using java/jdbc

 
e_poncedeleon
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Hi, I am new to this and i want to upload some files to my database but i simple can't figure out how to...can anyone give me an example on how to upload a file(binary data) using java and jdbc to my database...
Thank you
Eduardo
 
Jeanne Boyarsky
author & internet detective
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Eduardo,
Welcome to JavaRanch!

Uploading files to the database server is the same as uploading to any other machine. Then you can run the database import utility to get the files into the database.
 
Ulf Dittmer
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By "upload", do you mean to store it as a whole? If so, that's what BLOB type attribute are for. That's supported by the Statement and ResultSet classes, so if you have the file contents in your Java code, it shouldn't be too difficult. What do you have so far?

As an aside, storing binary file contents in a DB isn't always the best way to do it. Have you considered storing the file in the file system, and only keeping the path to the file in the DB?
 
Ramesh Etta
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Here is the sample code

import java.io.*;
import java.sql.*;
public class ImageStoreDatabase{
public static void main(String args[]){
try{
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection con=DriverManager.getConnection
("jdbcracle:thin:@localhost:1521:sid","scott","tiger");
PreparedStatement pstmt=con.prepareStatement("insert into image values
(?,?)");
FileInputStream fis=new FileInputStream("file name");
pstmt.setInt(1,21);
pstmt.setBinaryStream(2,fis,fis.available());
pstmt.executeUpdate();
}catch(Exception e){}
finally{
//pstmt.close();
}
}
}
and the table of the structure goes like this
create table image(id number(5),image blob);
 
It is sorta covered in the JavaRanch Style Guide.
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