java如何將圖片存入mysql數據庫




存入圖片

import java.sql.*;

import java.io.*;

public class InsertImg

{

public static void main(String args[])

{

try{

Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

Connection con=DriverManager.getConnection("jdbc:odbc:DBImg");

String sql = "insert into DBImg (p_w_picpath) values (?)";

PreparedStatement pstmt=con.prepareStatement(sql);

FileInputStream fi=new FileInputStream("./room.jpg");

pstmt.setBinaryStream(1,fi,fi.available());

pstmt.execute();

fi.close();

pstmt.close();

con.close();

}catch(Exception e){System.out.println(e.getMessage());}

}

}

把圖片取出輸出到文件

import java.io.*;

import java.sql.*;

 

public class ImgRead

{

public static void main(String args[])

{

try

{

Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");

String url="jdbc:microsoft:sqlserver://BILLGATES:1433";

Connection cn=DriverManager.getConnection(url,"sa","8310");

Statement st=cn.createStatement();

String str = "select img from test where id=1";

ResultSet rs=st.executeQuery(str);

rs.next();

InputStream in=rs.getBinaryStream(1);

 

FileOutputStream file = new FileOutputStream("./88.mp3");

byte c[] = new byte[1024];

 

int r = 0;

 

while ((r = in.read(c)) != -1){

file.write(c,0,r);

 

}

 

 

 

file.close();

in.close();

 

 

 

 

}

catch(Exception e)

{

e.printStackTrace();

}

}

}

把圖片輸出到JLabel控件

import java.awt.*;

import java.applet.*;

import java.awt.p_w_picpath.BufferedImage;

import com.sun.p_w_picpath.codec.jpeg.*;

import javax.swing.*;

import java.sql.*;

import java.io.*;

public class DisplayImg

{

public DisplayImg(){

Image img=null;

try{

Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

Connection con=DriverManager.getConnection("jdbc:odbc:DBImg");

Statement stmt=con.createStatement();

String sql = "select p_w_picpath from DBImg";

ResultSet rs=stmt.executeQuery(sql);

rs.next();

InputStream in = rs.getBinaryStream(1);

JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(in);

img=decoder.decodeAsBufferedImage();

rs.close();

con.close();

}catch(Exception e){System.out.println(e.getMessage());}

 

JFrame f=new JFrame();

JLabel label=new JLabel();

ImageIcon icon=new ImageIcon(img);

label.setIcon(icon);

JScrollPane jsp=new JScrollPane(label);

Container content=f.getContentPane();

content.add(jsp);

f.setSize(535,400);

f.setVisible(true);

 

}

 

public static void main(String args[]){

DisplayImg di=new DisplayImg();

}

}

 

上面的程序數據庫驅動不一致,自行修改一下.其中在Sqlserver中要存放圖片的字段應選"p_w_picpath"類型

源代碼來源：http://www.cnblogs.com/qixin622/archive/2010/09/01/1814658.html