昨天写了个图片浏览器，很简单，主要就是用一个JFileChooser导入一个文件，然后在文件父目录下导入下一个 或者上一个图像。 东西做好了，但是还有一个问题，就是我界面图片的路径设置有问题，在打成Jar包后就不能正常显示我的UI图片了。留着以后再解决吧。

 

package ImageScanner;import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.HeadlessException;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.filechooser.FileFilter;public class ImageScanner extends JFrame {/*** */private static final long serialVersionUID = 1L;/*** @param args*/public static void main(String[] args) {// TODO Auto-generated method stubnew ImageScanner();}private JLabel ImageLabel;private JPanel mainPanel;private JPanel btnPanel;private JButton PrevImagebtn;private JButton InsertImagebtn;private JButton NextImagebtn;private JFileChooser fc = new JFileChooser();;private File file = null;private File[] parentfiles;private int ImageIndex = 0; ImageIcon img1 = new ImageIcon("src\\Image\\BACKGROUNDS_GE_1.png");ImageIcon Jimg = new ImageIcon(img1.getImage().getScaledInstance(800, 600, 4));public ImageScanner() throws HeadlessException {super();Toolkit tk = Toolkit.getDefaultToolkit();this.setLocation((tk.getScreenSize().width - 800) / 2, (tk.getScreenSize().height - 750) / 2);this.setSize(800, 700); this.getContentPane().setLayout(null);this.setTitle("图片浏览器");this.setVisible(true);this.setDefaultCloseOperation(EXIT_ON_CLOSE);btnPanelInit(); PanelInit();this.add(mainPanel); this.add(btnPanel);  }private void PanelInit() {mainPanel = new JPanel();mainPanel.setBounds(0, 0, 800, 600); mainPanel.setLayout(null);ImageLabel = new JLabel();ImageLabel.setIcon(Jimg);   ImageLabel.setBounds(0, 0, 800, 600);mainPanel.add(ImageLabel);}private void btnPanelInit() {btnPanel=new JPanel() {  /*** */private static final long serialVersionUID = 1L;@Overridepublic void paint(Graphics g) { ImageIcon icon=new ImageIcon("src\\Image\\BACKGROUNDS_MAIN_1.png");g.drawImage(icon.getImage(),0,0,800,90,null);super.paint(g);}};btnPanel.setOpaque(false);btnPanel.setLayout(new FlowLayout());  btnPanel.setBounds(0, 600, 800, 100);PrevImagebtn=new JButton("前一张");  InsertImagebtn = new JButton("打开图片");NextImagebtn = new JButton("下一张"); PrevImagebtn.setIcon(new ImageIcon("src\\Image\\prev.png"));NextImagebtn.setIcon(new ImageIcon("src\\Image\\next.png"));btnPanel.add(PrevImagebtn);btnPanel.add(InsertImagebtn);btnPanel.add(NextImagebtn); InsertImagebtn.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent arg0) {fc.setAcceptAllFileFilterUsed(false);fc.setCurrentDirectory(new File("D:\\Picture"));fc.addChoosableFileFilter(new FileFilter() {@Overridepublic boolean accept(File f) {return Filefiteraccept(f);}@Overridepublic String getDescription() {return "JPG ,PNG or GIF Images";}});int returnVal = fc.showOpenDialog(null);if (returnVal == JFileChooser.APPROVE_OPTION) {file = fc.getSelectedFile();if (file != null) {InsertImage(file);setTitle(file.getName());}}}});NextImagebtn.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {if (file != null) {if (file.getParentFile() != null)parentfiles = file.getParentFile().listFiles(new java.io.FileFilter() {@Overridepublic boolean accept(File pathname) {return Filefiteraccept(pathname);}});for (int i = 0; i < parentfiles.length - 1; i++) {if (parentfiles[i].getName().equalsIgnoreCase(file.getName()))ImageIndex = i + 1;}InsertImage(parentfiles[ImageIndex]);setTitle(parentfiles[ImageIndex].getName());file = parentfiles[ImageIndex];if (ImageIndex == parentfiles.length-2){JOptionPane.showMessageDialog(null, "没有下一张了", "提示",JOptionPane.ERROR_MESSAGE);setTitle("图片浏览器");}}}});PrevImagebtn.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {if (file != null) {if (ImageIndex == -1){JOptionPane.showMessageDialog(null, "这是第一张了", "提示",JOptionPane.ERROR_MESSAGE);setTitle("图片浏览器");}else if (file.getParentFile() != null)parentfiles = file.getParentFile().listFiles(new java.io.FileFilter() {@Overridepublic boolean accept(File pathname) {return Filefiteraccept(pathname);}});for (int i = 0; i < parentfiles.length - 1; i++) {if (parentfiles[i].getName().equalsIgnoreCase(file.getName()))ImageIndex = i - 1;}InsertImage(parentfiles[ImageIndex]);setTitle(parentfiles[ImageIndex].getName());file = parentfiles[ImageIndex]; }}});}public void InsertImage(File f) {ImageIcon img = new ImageIcon(f.getAbsolutePath());ImageIcon JLabelimg = new ImageIcon(img.getImage().getScaledInstance(800, 600, 4));ImageLabel.setIcon(JLabelimg);}public boolean Filefiteraccept(File f) {int index = 0;for (int i = 0; i < f.getName().length(); i++)if (f.getName().charAt(i) == '.')index = i;String type = f.getName().substring(index);if (type.equals(".jpg"))return true;else if (type.equals(".png"))return true;else if (type.equals(".gif"))return true;else if (f.isDirectory())return true;elsereturn false;}
} 

 

 

昨天又听说 打包需要个fat插件。。回头找找再试试。。。