Oracle 操作图片
Blobtest.java Created with JBuilder
package testapp;
import java.sql.*;
import java.io.*;
public class Blobtest {
public Blobtest() {
}
public static void main (String args [])
throws SQLException, IOException
{
//write();
read();
}
static void read() throws SQLException, IOException {
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
// Connect to the database
// You can put a database name after the @ sign in the connection URL.
Connection conn =
DriverManager.getConnection ("jdbc:oracle:thin:@ebizser:1521:serverdb", "scott", "tiger");
// It's faster when you don't commit automatically
conn.setAutoCommit (false);
// Create a Statement
Statement stmt = conn.createStatement ();
// Do a query to get the row with NAME 'StreamExample'
ResultSet rset =
stmt.executeQuery ("select col2 from lobtest where userid=1");
// Get the first row
if (rset.next ())
{
// Get the data as a Stream from Oracle to the client
InputStream gif_data = rset.getBinaryStream (1);
// Open a file to store the gif data
FileOutputStream os = new FileOutputStream ("example.jpe");
// Loop, reading from the gif stream and writing to the file
int c;
while ((c = gif_data.read ()) != -1)
os.write (c);
// Close the file
os.close ();
}
// Close all the resources
if (rset != null)
rset.close();
if (stmt != null)
stmt.close();
if (conn != null)
conn.close();
}
static void write() throws SQLException, IOException {
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
// Connect to the database
// You can put a database name after the @ sign in the connection URL.
Connection conn =
//DriverManager.getConnection ("jdbc:oracle:thin:@ebizser:1521:serverdb", "scott", "tiger");
DriverManager.getConnection ("jdbc:oracle:oci8:@ebdb", "scott", "tiger");
// It's faster when you don't commit automatically
conn.setAutoCommit (false);
// Create a Statement
File file = new File("C:\\Documents and Settings\\gzb.ECOM\\My Documents\\My Pictures\\28-3-16933_jinxishan34s.jpe");
InputStream is = new FileInputStream ("C:\\Documents and Settings\\gzb.ECOM\\My Documents\\My Pictures\\28-3-16933_jinxishan34s.jpe");
PreparedStatement pstmt =
conn.prepareStatement ("insert into lobtest (userid, col2 ) values (?, ?)");
pstmt.setBinaryStream(2, is, (int)file.length ());
pstmt.setInt (1, 2);
pstmt.execute ();
if (pstmt != null)
pstmt.close();
if (conn != null)
conn.close();
}
}
Blobtest.javaCreated with JBuilder
