一、前言
如图所示：
目前代码实现了文件夹读取，缩略图展示这两个功能，剩余功能大家看界面也能猜到了，有生之年系列吧，下次想写再说吧。
二、准备
1.win10
2.eclipse
3.jdk 1.8.0_221
4.jar
下载链接：https://search.maven.org/artifact/net.coobird/thumbnailator/0.4.8/jar
三、结构
其中日志模块还没有写。
四、代码
1、启动main
package imageView.lyrics.main;
import java.awt.EventQueue;
import imageView.lyrics.ui.ImageViewFrameUI;
public class Main {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
new ImageViewFrameUI();
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
}
2、service
package imageView.lyrics.service;
import java.io.File;
import java.util.ArrayList;
import java.util.Locale;
import javax.swing.JFileChooser;
import javax.swing.filechooser.FileNameExtensionFilter;
import javax.swing.filechooser.FileSystemView;
import javax.swing.tree.DefaultMutableTreeNode;
import imageView.lyrics.ui.AlbumTreeUI;
import imageView.lyrics.ui.ImageUI;
import imageView.lyrics.util.ResizeImage;
public class AlbumService {
enum ImageType{
jpg,jpeg,png,CR2
}
private AlbumTreeUI albumTreeUI = AlbumTreeUI.getInstance();
private ImageUI imageUI = ImageUI.getInstance();
private String browseFolder() {
// 拿到文件系统
FileSystemView fsv = FileSystemView.getFileSystemView();
// 设置过滤器
FileNameExtensionFilter fileNameExtensionFilter = new FileNameExtensionFilter("Image File","jpg","jpeg","png");
// 修改为英文
JFileChooser.setDefaultLocale(Locale.US);
// 实例化
JFileChooser fileChooser = new JFileChooser();
// 设置当前工作目录为桌面
fileChooser.setCurrentDirectory(fsv.getHomeDirectory());
// 设置标头
fileChooser.setDialogTitle("select");
// 设置文件选择类型
fileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
// 移除所有文件过滤模式
fileChooser.removeChoosableFileFilter(fileChooser.getAcceptAllFileFilter());
// 添加文件过滤
fileChooser.setFileFilter(fileNameExtensionFilter);
// 拿到操作结果
int result = fileChooser.showOpenDialog(null);
// 判断操作结果
if(result == JFileChooser.APPROVE_OPTION) {
// 打印所选文件路径
return fileChooser.getSelectedFile().toString();
}
return null;
}
private void ergodicImage(String path,ArrayList<String> list) {
DefaultMutableTreeNode parent = albumTreeUI.addAlbum(path);
File file = new File(path);
File[] tempList = file.listFiles();
for (int i = 0; i < tempList.length; i++) {
String temp = tempList[i].toString();
if (tempList[i].isFile() && isImage(temp)) {
albumTreeUI.addImage(parent, temp);
String outPath = "thumbnail\\"+temp.substring(temp.lastIndexOf("\\")+1, temp.lastIndexOf("."))+"Temp.jpg";
ResizeImage.generateFixedSizeImage(temp, outPath);
imageUI.addImage(outPath);
}
if (tempList[i].isDirectory()) {
ergodicImage(tempList[i].getAbsolutePath(),list);
}
}
}
private boolean isImage(String name) {
String suffix = name.substring(name.lastIndexOf(".")+1);
for(ImageType type:ImageType.values()) {
if(suffix.equalsIgnoreCase(type.toString())) {
return true;
}
}
return false;
}
public boolean openFolder() {
String path = browseFolder();
if(path==null|| path.isEmpty()) {
return false;
}
ArrayList<String> arrayList = new ArrayList<String>();
ergodicImage(path,arrayList);
return true;
}
public static void main(String[] args) {
// TODO Auto-generated method stub
}
}
3、界面
AlbumTreeUI
package imageView.lyrics.ui;
import javax.swing.JPanel;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.util.HashMap;
import java.util.Map;
import javax.swing.JScrollPane;
public class AlbumTreeUI extends JPanel {
private static final long serialVersionUID = 1L;
private DefaultMutableTreeNode root;
public JTree tree;
private Map<DefaultMutableTreeNode,String> map = new HashMap<>();
private static final AlbumTreeUI instance = new AlbumTreeUI();
public Map<DefaultMutableTreeNode,String> getMap() {
return map;
}
public static AlbumTreeUI getInstance() {
return instance;
}
private AlbumTreeUI() {
root = new DefaultMutableTreeNode("Album");
DefaultTreeModel model = new DefaultTreeModel(root);
setLayout(new BorderLayout(0, 0));
JPanel panel = new JPanel();
add(panel, BorderLayout.CENTER);
panel.setLayout(new BorderLayout(0, 0));
JScrollPane scrollPane = new JScrollPane();
panel.add(scrollPane);
panel.setPreferredSize(new Dimension(80,520));
tree = new JTree();
scrollPane.setViewportView(tree);
tree.setModel(model);
}
public DefaultMutableTreeNode addAlbum(String path) {
String name = path.substring(path.lastIndexOf("\\"));
DefaultMutableTreeNode parent = new DefaultMutableTreeNode(name);
root.add(parent);
return parent;
}
public void addImage(DefaultMutableTreeNode parent, String path) {
DefaultMutableTreeNode defaultMutableTreeNode = new DefaultMutableTreeNode(path.substring(path.lastIndexOf("\\")+1));
getMap().put(defaultMutableTreeNode, path);
parent.add(defaultMutableTreeNode);
}
public void deleteImage() {
DefaultMutableTreeNode selectNode = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
if ((selectNode == null) || (selectNode.isRoot())) {
return;
}
DefaultTreeModel model = (DefaultTreeModel) tree.getModel();
model.removeNodeFromParent(selectNode);
tree.repaint();
}
public String openImage() {
DefaultMutableTreeNode selectNode = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
if ((selectNode == null) || (selectNode.isRoot())) {
return null;
}
String path = map.get(selectNode);
return path;
}
}
ImageDispalyUI
package imageView.lyrics.ui;
import javax.swing.JPanel;
import java.awt.BorderLayout;
import javax.swing.ImageIcon;
import javax.swing.JButton;
public class ImageDispalyUI extends JPanel {
private static final long serialVersionUID = 1L;
public JButton btnNewButton;
private ImageIcon imageIcon;
public ImageDispalyUI(String imagePath) {
imageIcon = new ImageIcon(imagePath);
setSize(imageIcon.getIconWidth(),imageIcon.getIconHeight());
setLayout(new BorderLayout(0, 0));
btnNewButton = new JButton("");
btnNewButton.setIcon(imageIcon);
add(btnNewButton);
}
public ImageIcon getImageIcon() {
return imageIcon;
}
}
ImageUI
package imageView.lyrics.ui;
import java.awt.Dimension;
import javax.swing.JPanel;
public class ImageUI extends JPanel {
private static final long serialVersionUID = 1L;
private static final ImageUI instance = new ImageUI();
private int positionX = 5;
private int positionY = 5;
public static ImageUI getInstance() {
return instance;
}
private ImageUI() {
setLayout(null);
}
public void addImage(String path) {
ImageDispalyUI imageDispalyUI = new ImageDispalyUI(path);
int width = this.getWidth()-80;
int height = this.getHeight()-80;
int imageWidth = imageDispalyUI.getWidth();
int imageHeight = imageDispalyUI.getHeight();
imageDispalyUI.setBounds(positionX, positionY, imageWidth,imageHeight);
int x = imageWidth+positionX;
int y = imageHeight+positionY;
if(x<width && y<height) {
positionX += imageWidth+5;
}
if(x>width && y<height) {
positionX = 5;
positionY += imageHeight+5;
}
if(x>width && y>height) {
positionY += imageHeight;
this.setPreferredSize(new Dimension(positionX,positionY));
}
this.add(imageDispalyUI);
this.updateUI();
}
}
ImageViewFrameUI
package imageView.lyrics.ui;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JFrame;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import java.awt.BorderLayout;
import java.awt.Dimension;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import imageView.lyrics.service.AlbumService;
public class ImageViewFrameUI {
private JFrame frame;
private JMenuItem mntmOpenfolder;
private AlbumService albumService = new AlbumService();
private AlbumTreeUI albumTreeUI = AlbumTreeUI.getInstance();
public ImageViewFrameUI() {
initialize();
addListener();
leftPanelListener();
}
private void initialize() {
frame = new JFrame();
frame.setVisible(true);
frame.setTitle("Image View");
frame.setBounds(100, 100, 800, 600);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JMenuBar menuBar = new JMenuBar();
frame.setJMenuBar(menuBar);
JMenu mnFile = new JMenu("File");
menuBar.add(mnFile);
JMenuItem mntmOpenFile = new JMenuItem("open file");
mnFile.add(mntmOpenFile);
mntmOpenfolder = new JMenuItem("open folder");
mnFile.add(mntmOpenfolder);
JMenu mnEdit = new JMenu("Edit");
menuBar.add(mnEdit);
JMenuItem mntmAdd = new JMenuItem("add");
mnEdit.add(mntmAdd);
JMenuItem mntmModify = new JMenuItem("modify");
mnEdit.add(mntmModify);
JMenuItem mntmRemove = new JMenuItem("remove");
mnEdit.add(mntmRemove);
JMenu mnView = new JMenu("View");
menuBar.add(mnView);
JMenuItem mntmFind = new JMenuItem("find");
mnView.add(mntmFind);
JMenu mnHelp = new JMenu("Help");
menuBar.add(mnHelp);
JMenuItem mntmAbout = new JMenuItem("About");
mnHelp.add(mntmAbout);
frame.getContentPane().setLayout(new BorderLayout(0, 0));
JScrollPane scrollPane = new JScrollPane();
frame.getContentPane().add(scrollPane);
JPanel panel = new JPanel();
scrollPane.setViewportView(panel);
panel.setPreferredSize(new Dimension(760,520));
panel.setLayout(new BorderLayout(0, 0));
JSplitPane splitPane = new JSplitPane();
splitPane.setOneTouchExpandable(true);
splitPane.setResizeWeight(0.2);
panel.add(splitPane);
AlbumTreeUI albumTreeUI = AlbumTreeUI.getInstance();
splitPane.setLeftComponent(albumTreeUI);
ImageUI imageUI = ImageUI.getInstance();
splitPane.setRightComponent(imageUI);
}
private void addListener() {
mntmOpenfolder.addActionListener(event -> {
albumService.openFolder();
});
}
private void leftPanelListener() {
MouseAdapter mouseAdapter = new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
String imagePath = albumTreeUI.openImage();
System.out.println(imagePath);
}
};
albumTreeUI.tree.addMouseListener(mouseAdapter);
}
}
4.util
package imageView.lyrics.util;
import net.coobird.thumbnailator.Thumbnails;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
public class ResizeImage {
public static void main(String[] args) {
ResizeImage.generateFixedSizeImage("D:\\download\\毕业图片\\IMG_3303.CR2","thumbnail\\3.jpg");
}
public static String generateFixedSizeImage(String inputPath,String outputPath){
try {
InputStream inputStream = new FileInputStream(inputPath);
Thumbnails.of(inputStream).size(80,80).toFile(outputPath);
return outputPath;
} catch (IOException e) {
System.out.println("原因: " + e.getMessage());
}
return "";
}
}
五、效果
初始界面
六、晚安
困了困了，晚安，代码写的不好，大家多多包涵
