JDBC for Oracle - Herong's Tutorial Examples - v3.13, by Herong Yang
Inserting BLOB Values with setBytes() Method
This section describes how to insert BLOB values with the PreparedStatement.setBytes() method.
Another way to insert a binary string into a BLOB column is to create a PreparedStatement object and use the setBytes() method. See the sample program below:
/* OracleBlobSetBytes.java * Copyright (c) HerongYang.com. All Rights Reserved. */ import java.sql.*; public class OracleBlobSetBytes { public static void main(String [] args) { Connection con = null; try { oracle.jdbc.pool.OracleDataSource ds = new oracle.jdbc.pool.OracleDataSource(); ds.setDriverType("thin"); ds.setServerName("localhost"); ds.setPortNumber(1521); ds.setDatabaseName("XE"); ds.setUser("Herong"); ds.setPassword("TopSecret"); con = ds.getConnection(); // Deleting the record for re-testing String subject = "Test of the setBytes() method"; Statement sta = con.createStatement(); sta.executeUpdate("DELETE FROM Image WHERE Subject = '" +subject+"'"); // Inserting CLOB value with PreparedStatement.setBytes() PreparedStatement ps = con.prepareStatement( "INSERT INTO Image (ID, Subject, Body) VALUES (2,?,?)"); ps.setString(1, subject); byte[] bodyIn = {(byte)0xC9, (byte)0xCB, (byte)0xBB, (byte)0xCC, (byte)0xCE, (byte)0xB9, (byte)0xC8, (byte)0xCA, (byte)0xBC, (byte)0xCC, (byte)0xCE, (byte)0xB9, (byte)0xC9, (byte)0xCB, (byte)0xBB}; ps.setBytes(2, bodyIn); int count = ps.executeUpdate(); ps.close(); // Retrieving BLOB value with getBytes() ResultSet res = sta.executeQuery( "SELECT * FROM Image WHERE Subject = '"+subject+"'"); res.next(); System.out.println("The inserted record: "); System.out.println(" Subject = "+res.getString("Subject")); System.out.println(" Body = " +new String(res.getBytes("Body"))); res.close(); sta.close(); con.close(); } catch (Exception e) { e.printStackTrace(); } } }
Compilation and execution of this program is below. The output confirms that the binary string value, stored in a byte array, was correctly inserted into the CLOB column:
herong> java -cp .;ojdbc11.jar OracleBlobSetBytes
The inserted record:
Subject = Test on INSERT statement
Body = ╔╦╗╠╬╣╚╩╝╠╬╣╔╦╗
Table of Contents
JDBC (Java Database Connectivity) Introduction
Oracle Express Edition Installation on Windows
Oracle - Reference Implementation of JdbcRowSet
Oracle - JBDC CallableStatement
Oracle CLOB (Character Large Object) - TEXT
►Oracle BLOB (Binary Large Object) - BLOB
Overview of BLOB (Binary Large Object)
Create Tables with CLOB Columns
Inserting BLOB Values with SQL INSERT Statements
►Inserting BLOB Values with setBytes() Method
Inserting BLOB Values with setBinaryStream() Method
Closing InputStream Too Early on setBinaryStream()
Retrieving BLOB Values with getBytes() Method
Retrieving BLOB Values with getBinaryStream() Method
Retrieving BLOB Values with getBlob() Method
Inserting BLOB Values with setBlob() Method
Copying BLOB Values to New Rows