mysql 图片的存取

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http://www.cnblogs.com/xudong-bupt/p/3758529.html

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);
        }
    }
}


http://blog.sina.com.cn/s/blog_6a9d14ec0100l8y1.html