大家看看这个程序请教为什么图片不出来的呢

R344java 2009-04-25 11:20:51

//package com.cn;

import javax.swing.*;
import java.awt.*;

public class MyMun {

/**
* @param args
*/
JLabel backlabel = null;
JFrame chuangkou = null;

public MyMun() {
chuangkou = new JFrame("企业管理系统");
// JPanel jpanel1=new JPanel();
// jpanel1.setBackground(Color.red);
backlabel = new JLabel();
backlabel.setVerticalAlignment(SwingConstants.TOP);
backlabel.setHorizontalAlignment(SwingConstants.CENTER);
uptupian();
JDesktopPane desktoppane = new JDesktopPane();
desktoppane.add(backlabel, new Integer(Integer.MIN_VALUE));
JPanel jpanel2 = new JPanel();
jpanel2.setBackground(Color.black);
//JPanel jpanel3 = new JPanel();
//jpanel3.setBackground(Color.blue);

Container conn = chuangkou.getContentPane();
conn.add(desktoppane);
// conn.add(jpanel1,BorderLayout.SOUTH);
conn.add(jpanel2, BorderLayout.NORTH);
//conn.add(jpanel3, BorderLayout.CENTER);
JMenuBar caidanlan = new JMenuBar();
// caidanlan.setBorderPainted(falsh);
JMenu caidan = new JMenu("基础信息管理");
JMenu caidan1 = new JMenu("进货管理");
JMenu caidan2 = new JMenu("销售管理");
JMenu caidan3 = new JMenu("查询统计");
JMenu caidan4 = new JMenu("库存管理");
JMenu caidan5 = new JMenu("系统管理");
caidanlan.add(caidan);
caidanlan.add(caidan1);
caidanlan.add(caidan2);
caidanlan.add(caidan3);
caidanlan.add(caidan4);
caidanlan.add(caidan5);
chuangkou.setJMenuBar(caidanlan);
chuangkou.setSize(800, 600);
chuangkou.setVisible(true);
}

public void uptupian() {
if (backlabel != null) {
int backw = MyMun.this.chuangkou.getWidth();
int backh = chuangkou.getHeight();
backlabel.setSize(backw, backh);
backlabel.setText("<html><body><image width='" + backw
+ "'height='" + (backh) + "'src="
+ MyMun.this.getClass().getResource("a.jpg")
+ "'></img></body></html>");
}

}
static {
try
{
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}catch(Exception e)
{e.printStackTrace();}
}
public static void main(String[] args) {
// TODO Auto-generated method stub

new MyMun();
}

}

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sunny936 2009-05-07

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和7楼的回帖一样。

jinxfei 2009-04-26

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package com.cn; 



import javax.swing.*;

import java.awt.*;



public class MyMun {



	/**

	 * @param args

	 */

	JLabel backlabel = null;



	JFrame chuangkou = null;



	public MyMun() {

		chuangkou = new JFrame("企业管理系统");

		// JPanel jpanel1=new JPanel();

		// jpanel1.setBackground(Color.red);



		uptupian();

		//JDesktopPane desktoppane = new JDesktopPane();

		//desktoppane.add(backlabel, new Integer(Integer.MIN_VALUE));

		JPanel jpanel2 = new JPanel();

		jpanel2.setBackground(Color.black);

		// JPanel jpanel3 = new JPanel();

		// jpanel3.setBackground(Color.blue);



		Container conn = chuangkou.getContentPane();

		conn.add(backlabel);

		// conn.add(jpanel1,BorderLayout.SOUTH);

		conn.add(jpanel2, BorderLayout.NORTH);

		// conn.add(jpanel3, BorderLayout.CENTER);

		JMenuBar caidanlan = new JMenuBar();

		// caidanlan.setBorderPainted(falsh);

		JMenu caidan = new JMenu("基础信息管理");

		JMenu caidan1 = new JMenu("进货管理");

		JMenu caidan2 = new JMenu("销售管理");

		JMenu caidan3 = new JMenu("查询统计");

		JMenu caidan4 = new JMenu("库存管理");

		JMenu caidan5 = new JMenu("系统管理");

		caidanlan.add(caidan);

		caidanlan.add(caidan1);

		caidanlan.add(caidan2);

		caidanlan.add(caidan3);

		caidanlan.add(caidan4);

		caidanlan.add(caidan5);

		chuangkou.setJMenuBar(caidanlan);

		chuangkou.setSize(800, 600);

		chuangkou.setVisible(true);

	}



	public void uptupian() {

		int backw = MyMun.this.chuangkou.getWidth();

		int backh = chuangkou.getHeight();

		

		backlabel = new JLabel(" <html> <body> <image width='" + backw

				+ "'height='" + (backh) + "'src="

				+ MyMun.this.getClass().getResource("a.jpg")

				+ "'> </img> </body> </html>");

		backlabel.setVerticalAlignment(SwingConstants.TOP);

		backlabel.setHorizontalAlignment(SwingConstants.CENTER);

		

		if (backlabel != null) {			

			backlabel.setSize(backw, backh);			

		}



	}



	static {

		try {

			UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

		} catch (Exception e) {

			e.printStackTrace();

		}

	}



	public static void main(String[] args) {

		// TODO Auto-generated method stub 



		new MyMun();

	}



}