SavePicture.java :

public class SavePicture {

public static void main(String[] args) {

Connection conn=null;

PreparedStatement pstmt=null;

String sql="insert into student(id,name,photo) values(?,?,?)";

try {

Class.forName("oracle.jdbc.driver.OracleDriver");

conn=DriverManager.

getConnection("jdbc:oracle:thin:@localhost:1521:orcl","scott","tiger");

pstmt=conn.prepareStatement(sql);

pstmt.setInt(1,1);

pstmt.setString(2,"tom");

//以下为重点部分

File f=new File("src\\coder.jpg");

FileInputStream fis=new FileInputStream(f);

pstmt.setBinaryStream(3,fis,(int)f.length());

int n=pstmt.executeUpdate();

System.out.println(n+"条记录被插入");

} catch (ClassNotFoundException e) {

e.printStackTrace();

} catch (SQLException e) {

e.printStackTrace();

} catch (FileNotFoundException e) {

e.printStackTrace();

}finally{

//关闭资源

}

}

}

GetPicture.java :

public class GetPicture {

public static void main(String[] args) {

Connection conn=null;

PreparedStatement pstmt=null;

ResultSet rs=null;

String sql="select id,name,photo from student where id=?";

try {

Class.forName("oracle.jdbc.driver.OracleDriver");

conn=DriverManager.

getConnection("jdbc:oracle:thin:@localhost:1521:orcl","scott","tiger");

pstmt=conn.prepareStatement(sql);

pstmt.setInt(1,1);

rs=pstmt.executeQuery();

if(rs.next()){

//重点开始

InputStream is=rs.getBinaryStream("photo");

FileOutputStream fos=new FileOutputStream(new File("abc.jpg"));

byte[] buffer=new byte[1024];

int len=0;

while((len=is.read(buffer))!=-1){

fos.write(buffer,0,len);

}

fos.close();

is.close();

}

} catch (ClassNotFoundException e) {

e.printStackTrace();

} catch (SQLException e) {

e.printStackTrace();

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}finally{

//关闭资源

}

}

}运行程序，刷新工程，得到：

可以看到abc.jpg和coder.jpg是相同的图片。