import java.io.InputStream;
import java.sql.Blob;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class Main {
public static void main(String[] argv) throws Exception {
String driverName = "com.jnetdirect.jsql.JSQLDriver";
Class.forName(driverName);
String serverName = "127.0.0.1";
String portNumber = "1433";
String mydatabase = serverName + ":" + portNumber;
String url = "jdbc:JSQLConnect://" + mydatabase;
String username = "username";
String password = "password";
Connection connection = DriverManager.getConnection(url, username, password);
Statement stmt = connection.createStatement();
ResultSet rs = stmt.executeQuery("SELECT col_blob FROM mysql_all_table");
if (rs.next()) {
Blob blob = rs.getBlob("col_blob");
long blobLength = blob.length();
int pos = 1; // position is 1-based
int len = 10;
byte[] bytes = blob.getBytes(pos, len);
InputStream is = blob.getBinaryStream();
int b = is.read();
}
}
}