Question

我正在尝试使用JFileChooser获取用户选择的文件夹的备份程序，并将其复制到也使用相同方法选择的目标。

唯一的问题是它没有将所选文件夹的所有内容放入名为同一个目标的目标文件夹中，我真的不知道为什么。我做了一些谷歌搜索，我没有找到任何有用的东西。

以下是代码：

package main;

import java.io.File;
import java.util.ArrayList;

public class test {

BackgroundWorker bw;
static ArrayList bgWorker = new ArrayList();
ArrayList al = new ArrayList(); // this is the list of files selected to
                                // back up
String dir = ""; // this is the path to back everything up to selected by
                    static // the user
boolean bwInitiallized = false;

public void startBackup() throws Exception {
    Panel.txtArea.append("Starting Backup...\n");

    for (int i = 0; i < al.size(); i++) {
        /**
         * THIS IS WHERE I NEED TO CREATE THE FOLDER THAT EACH BACKUP FILE
         * WILL GO INTO EX: SC2 GOES INTO A FOLDER CALLED SC2 AND RIOT GOES
         * TO RIOT, ALL WITHIN THE DIRECTORY CHOSEN
         */
        File file = new File((String) al.get(i));
        File directory = new File(dir);

        // File dirFile = new File(dir + "\\" + file.getName());
        // if (!dirFile.exists())
        // dirFile.mkdir();

        bw = new BackgroundWorker(Panel.txtArea, file, directory);
        bgWorker.add(bw);
        bwInitiallized = true;
        bw.execute();

        /**
         * follows to the bottom of the txtarea
         */
        int x;
        Panel.txtArea.selectAll();
        x = Panel.txtArea.getSelectionEnd();
        Panel.txtArea.select(1, x);

    }
    clearList(); // method not included in this example that deletes all the
                    // contents of the al array list.
}

public static void cancel() {
    BackgroundWorker bg;
    if (bwInitiallized) {
        bwInitiallized = false;
        Panel.txtArea.append("Cancelling...\n");
        for (int i = 0; i < bgWorker.size(); i++) {
            // BackgroundWorker bg = (BackgroundWorker) bgWorker.get(i);
            bg = (BackgroundWorker) bgWorker.get(i);
            bg.cancel(true);
        }
        Panel.txtArea.append("Canceled backUp!\n");
    } else {
        Panel.txtArea.append("Cannot Cancel! Not Initiallized!\n");
    }
}
}

我认为问题是：我相信无论出于何种原因，目标文件路径需要包含所包含的文件夹的名称，但我尝试过它并没有帮助。

有谁知道我做错了什么？

这是制作JFileChooser的代码：

public void fileChooserToDestination() {
    LookAndFeel previousLF = UIManager.getLookAndFeel();
    try {
        UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
    } catch (Exception e) {
    }
    JFileChooser jfc = new JFileChooser();
    try {
        UIManager.setLookAndFeel(previousLF);
    } catch (UnsupportedLookAndFeelException e) {
    }

    jfc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);

    if (jfc.showDialog(null, "Select Directory") == JFileChooser.APPROVE_OPTION) {
        File file = jfc.getSelectedFile();
        dir = file.getPath();
        Panel.txtArea.append("User selected " + file.getPath()
                + " for the destination...\n");
        try {
            startBackup();
        } catch (Exception e) {
        }

    } else {
        Dialogs.msg("You canceled selecting a destination folder! Returning to main screen...");
        al.clear();
        Panel.txtArea.append("User cancelled the destination selection..."
                + "\n");
    }

    return;
}

Answer 1

我需要的部分代码丢失了。我无法看到你在决定如何将源文件附加到目标路径的位置，所以我写了这个快速的例子来说明这一点......

File sourcePath = new File("/path/to/be/backed/up");
File destPath = new File("X:/BackupHere");

// Get all the files from sourcePath
List<File> listFiles = getFilesFrom(sourcePath);

for (File toBackup : listFiles) {

    // Now we need to strip off the sourcePath
    // Get the name of the file
    String fileName = toBackup.getName();
    // Get parent folder's path
    String path = toBackup.getParent();
    // Remove the source path from file path
    path = path.substring(sourcePath.getPath().length());

    // Append the file name to the path
    path = path + File.separator + fileName;

    // Now we have the name of the back up file
    String backupFile = destPath + path;

    System.out.println("Backup to " + backupFile);

}

基本上，您需要删除“源路径”（要复制的目录）。然后，您可以使用结果值附加到“备份路径”值，然后您应该有一个合适的路径。

将文件夹复制到名为相同内容的目标

1 个答案: