看了下面的程序就知道了
如果有问题请回：cgguo@163.net
import java.io.*;
import java.util.*;
import java.sql.*;
import oracle.jdbc.driver.*;
import java.text.*;
//
// @author: guo chang guo
// @time: 2003 08 17
//
// this program shows how to put a very big bytes array into oracle table(long raw)
// you can not use PreparedStatement's method setBytes, because setBytes can not
// support very big bytes array, you must use PreparedStatement's method setBinaryStream.
// if you want to use this method, you must transfer your bytes array into inputstream,
// in this example, we use ByteArrayInputStream which can be constructed by a bytes array.
//
// @copyright(R) cvicse
//
//
//the definition of the oracle table :CREATE TABLE bin_data (name VARCHAR(30),data long raw ).
//you can not define the table: CREATE TABLE bin_data (name VARCHAR(30),data blob )
//
//
//we have test this program in oracle 9.2 the file size is 31M
//
public class test
{
public static void main(String args[]) throws java.io.IOException,java.sql.SQLException
{
try
{
Class.forName("oracle.jdbc.driver.OracleDriver");
}
catch (java.lang.ClassNotFoundException e)
{
System.err.print("ClassNotFoundException: " + e.getMessage());
}
try
{
//open a file, put the content of file into a bytes array
File files = new File("c:\\temp\\jdk140.chm");
FileInputStream fis=new FileInputStream(files);
System.out.println(files.getName());
System.out.println((int)files.length());
byte[] fl = new byte[(int)files.length()];
System.out.println(fl.length);
fis.read(fl);
//use this bytes array to construct a InputStream
ByteArrayInputStream kk = new ByteArrayInputStream(fl) ;
//connect the oracle database
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@eaiserver01:1521:orcl", "system", "admin");
PreparedStatement ps = conn.prepareStatement("INSERT INTO bin_data (name,data)" +"VALUES (?, ?)");
//set parameters
ps.setString(1,files.getName());
ps.setBinaryStream(2, kk,(int)files.length());
//execute
ps.executeUpdate();
fis.close();
ps.close();
// read from the table
int bytesRead = 0;
int byteSum = 0;
byte[] buffer = new byte[8 * 1924];
FileOutputStream fis2 = new FileOutputStream("c:\\temp\\hi.chm");
PreparedStatement ps2 = conn.prepareStatement( "select data from bin_data");
ResultSet rs = ps2.executeQuery();
if (rs != null)
{
while(rs.next())
{
InputStream is = rs.getBinaryStream(1);
while ((bytesRead = is.read(buffer)) != -1)
{
byteSum += bytesRead;
fis2.write(buffer, 0, bytesRead);
}
fis2.close( );
}
rs.close( );
}
ps2.close( );
}
catch(Exception e)
{
System.out.println("errror :"+e.toString() );
e.printStackTrace();
}
}
}
