Oracle操作图片

王朝oracle·作者佚名  2008-05-31
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Oracle 操作图片

BloBTest.Java Created with JBuilderpackage 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

 
 
 
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