Java 简易电子相册（一）

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; } /** * Create the panel. */ 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; /** * Create the panel. */ 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; } /** * Create the panel. */ 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(); /** * Create the application. */ public ImageViewFrameUI() { initialize(); addListener(); leftPanelListener(); } /** * Initialize the contents of the frame. */ 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"); } /** * 使用给定的图片生成指定大小的图片 */ 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