往数据库存取图片/视频

import java.io.*;

import java.sql.*;

public class LoadStoreBLOB {

public static void main(String[] args) {

DBConnection DB = new DBConnection(); //负责连接MySQl数据库的类

Connection con = null;

PreparedStatement ps = null;

ResultSet rs = null;

InputStream in = null;

try {

//从本地硬盘硬盘读取一张图片保存到数据库

con=DB.getConn();

in=new FileInputStream("sdf.png");

ps=con.prepareStatement("insert into test.phototest values(?,?)");

ps.setInt(1,2);

ps.setBinaryStream(2, in, in.available());

ps.executeUpdate();

in.close();

DB.closeConn(con);

//从数据库读取图片保存到本地硬盘

con=DB.getConn();

ps=con.prepareStatement("select * from test.phototest where id=?");

ps.setInt(1,2);

rs=ps.executeQuery();

rs.next(); //将光标指向第一行

in=rs.getBinaryStream("photo");

byte[] b=new byte[in.available()]; //新建保存图片数据的byte数组

in.read(b);

OutputStream out=new FileOutputStream("222.jpg");

out.write(b);

out.flush();

out.close();

DB.closeConn(con);

}

catch (Exception e) {

System.out.println("Error::"+e);

}

}

}