JDBC for Oracle - Herong's Tutorial Examples - v3.12, by Herong Yang
Inserting BLOB Values with setBinaryStream() Method
This section describes how to insert BLOB values with the PreparedStatement.setBinaryStream() method.
If you want to insert the entire content of a binary file into a BLOB column, you should create an InputStream object from this file, and use the PreparedStatement.setBinaryStream() method to pass the binary file content to the BLOB column through the InputStream object. There are 3 versions of the setBinaryStream() method, two of them were added as part of JDBC 4.0 (Java 1.6). Your JDBC driver may not support them:
To test those setBinaryStream() methods, wrote the following program:
/* OracleBlobSetBinaryStream.java * Copyright (c) HerongYang.com. All Rights Reserved. */ import java.io.*; import java.sql.*; public class OracleBlobSetBinaryStream { 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 setBinaryStream() methods"; Statement sta = con.createStatement(); sta.executeUpdate("DELETE FROM Image WHERE Subject = '" +subject+"'"); // Inserting CLOB value with a PreparedStatement PreparedStatement ps = con.prepareStatement( "INSERT INTO Image (ID, Subject, Body) VALUES (3,?,?)"); ps.setString(1, subject); InputStream bodyIn = new FileInputStream("OracleBlobSetBinaryStream.class"); // Test 1 - This will not work with JDBC 3.0 drivers // ps.setBinaryStream(2, bodyIn); // Test 2 - This will not work with JDBC 3.0 drivers // File fileIn = new File("OracleBlobSetBinaryStream.class"); // ps.setBinaryStream(2, bodyIn, fileIn.length()); // Test 3 - This works with JDBC 3.0 drivers File fileIn = new File("OracleBlobSetBinaryStream.class"); ps.setBinaryStream(2, bodyIn, (int) fileIn.length()); int count = ps.executeUpdate(); bodyIn.close(); ps.close(); // Retrieving BLOB value with getBytes() sta = con.createStatement(); 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"),0,32)); res.close(); sta.close(); con.close(); } catch (Exception e) { System.err.println("Exception: "+e.getMessage()); e.printStackTrace(); } } }
With new versions of JDBC drivers, all 3 tests are working:
herong> java -cp .;ojdbc11.jar OracleBlobSetBinaryStream The inserted record: Subject = Test of setBinaryStream() methods Body = -||+ 2 | ; H I ? J ? K
If you are using a JDBC 3.0 driver, setBinaryStream(int parameterIndex, InputStream x) will not work. Here is what I got with the "Test 1" section open in my program with ojdbc14.jar with JDK 1.6 and Oracle 10.2. Remember that ojdbc14.jar is a JDBC 3.0 driver.
herong> Progra~1\java\jdk1.6.0_2\bin\java \ -cp .;ojdbc14.jar OracleBlobSetBinaryStream Exception in thread "main" java.lang.AbstractMethodError: oracle.jdbc .driver.T4CPreparedStatement.setBinaryStream( ILjava/io/InputStream;)V at OracleBlobSetBinaryStream.main( OracleBlobSetBinaryStream.java:35)
If you are using a JDBC 3.0 driver, "Test 2" also failed for the same reason - fileIn.length() returns "long" and that setCharacterStream(int, InputStream, long) is JDBC 4.0 method:
herong> Progra~1\java\jdk1.6.0_2\bin\java \ -cp .;ojdbc14.jar OracleBlobSetBinaryStream Exception in thread "main" java.lang.AbstractMethodError: oracle.jdbc .driver.T4CPreparedStatement.setBinaryStream( ILjava/io/InputStream;J)V at OracleBlobSetBinaryStream.main( OracleBlobSetBinaryStream.java:39)
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