在java swing中需要为容器添加图片，或者背景图片。

提供两种简单的解决方案，一种利用JPanel，另一种利用JLabel

1.JPanel(源代码)

package oo;

import java.awt.Graphics;

import java.awt.Image;

import java.io.File;

import javax.swing.ImageIcon;

import javax.swing.JFrame;

import javax.swing.JPanel;

public class Drawing {

JFrame jframe = new JFrame();

public static JPanel GImage = null;

public Drawing() {

initFrame();

}

// 初始化窗口

public void initFrame() {

// 利用JPanel添加背景图片

GImage = new JPanel() {

protected void paintComponent(Graphics g) {

ImageIcon icon = new ImageIcon("image\\benbenla.jpg");

Image img = icon.getImage();

g.drawImage(img, 0, 0, icon.getIconWidth(),

icon.getIconHeight(), icon.getImageObserver());

jframe.setSize(icon.getIconWidth(), icon.getIconHeight());

}

};

jframe.setTitle("测试背景图片");

jframe.add(GImage);

jframe.pack();

jframe.setVisible(true);

jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

public static void main(String[] args) {

new Drawing();

}

}

2.JLabel源代码

package swing.draw;

import java.awt.Image;

import javax.swing.ImageIcon;

import javax.swing.JFrame;

import javax.swing.JLabel;

/** 利用JLabel来构建图片 */

public class Drawing2 {

JLabel jlpic = new JLabel();

JFrame jframe = new JFrame();

public Drawing2() {

init1Frame();

}

public void init1Frame() {

ImageIcon icon = new ImageIcon("image\\benbenla.jpg");

icon.setImage(icon.getImage().getScaledInstance(icon.getIconWidth(),

icon.getIconHeight(), Image.SCALE_DEFAULT));

System.out.println(icon.getIconHeight() + "" + icon.getIconWidth());

jlpic.setBounds(0, 0, 1366, 768);

jlpic.setHorizontalAlignment(0);

jlpic.setIcon(icon);

jframe.setSize(1366, 768);

jframe.add(jlpic);

jframe.pack();

jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

jframe.setVisible(true);

}

public static void main(String args[]) {

new Drawing2();

}

}