我在顯示從JFrame的數據庫檢索的圖像時遇到問題.這是我將要使用的

??????……

try

{

Class.forName("com.mysql.jdbc.Driver");

Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306/studio","root","");

Statement st=con.createStatement();

ResultSet rs = st.executeQuery( "select image from photo_instn where cust_id='2'") ;

while(rs.next())

{

byte[] imagedata = rs.getBytes("image") ;

Image img = Toolkit.getDefaultToolkit().createImage(imagedata);

ImageIcon icon =new ImageIcon(img);

JLabel lPhoto = new JLabel(icon) ;

setLayout(null); // BYTES TO IMAGE

System.out.println("Inside");

System.out.println(lPhoto);

this.add(lPhoto) ;

lPhoto.setBounds(200,20,300,400);

}

}

此代碼沒有問題.但是圖像未顯示在框架上…

請幫助我解決這個問題….

最佳答案

import java.awt.*;

import java.sql.*;

import javax.swing.*;

public class DisplayImage extends JFrame {

Connection connection = null;

PreparedStatement statement = null;

ResultSet result;

public DisplayImage() {

super("Image Display");

setSize(600, 600);

connection = getConnection();

try { // table name:image and second image is field name

statement = connection

.prepareStatement("select image from image where id = 1");

result = statement.executeQuery();

byte[] image = null;

while (result.next()) {

image = result.getBytes("image");

}

Image img = Toolkit.getDefaultToolkit().createImage(image);

ImageIcon icon = new ImageIcon(img);

JLabel lPhoto = new JLabel();

lPhoto.setIcon(icon);

add(lPhoto);

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

setVisible(true);

}

public Connection getConnection() {

Connection connection = null;

try {

Class.forName("com.mysql.jdbc.Driver");

connection = DriverManager.getConnection(

// user name:root and password:blank

"jdbc:mysql://localhost:3306/insertRetriveImages", "root",

"");

} catch (Exception e) {

System.out.println("Error Occured While Getting the Connection: - "

+ e);

}

return connection;

}

public static void main(String[] args) {

new DisplayImage();

}

}

總結

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