使用DFS算法在Java中复制文件夹的实现 原创

使用DFS算法在Java中复制文件夹的实现

package com.nstc.aims.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.file.StandardCopyOption;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.io.File;
import java.io.IOException;

/**
* 使用DFS算法在Java中复制文件夹的实现
*/
public class FolderCopy {

private static int step = 1;

public static void main(String[] args) throws IOException {
String sourceFolder = "path/to/source/folder";
String destinationFolder = "path/to/destination/folder";
copyFolder(new File(sourceFolder), new File(destinationFolder));
}

public static void copyFolder(File sourceFolder, File destinationFolder) throws IOException {
print("sourceFolder="+sourceFolder.getAbsolutePath());
print("destinationFolder="+destinationFolder.getAbsolutePath());
// 如果源文件夹不存在，则无法复制它
if (!sourceFolder.exists()) {
return;
}
// 如果目标文件夹不存在，创建它
if (!destinationFolder.exists()) {
print(true, "目标文件夹不存在，创建:["+destinationFolder.getAbsolutePath()+"]");
destinationFolder.mkdirs();
}
// 遍历源文件夹中的所有文件和子文件夹
for (File file : sourceFolder.listFiles()) {
if (file.isDirectory()) {
print(true, "当前文件是文件夹:["+file.getAbsolutePath()+"]");
// 如果当前文件是文件夹，则递归调用此函数以复制该文件夹及其内容
String newSourceFolderPath = file.getAbsolutePath();
String newDestinationFolderPath = newSourceFolderPath.replace(sourceFolder.getAbsolutePath(), destinationFolder.getAbsolutePath());
File newSourceFolder = new File(newSourceFolderPath);
File newDestinationFolder = new File(newDestinationFolderPath);
copyFolder(newSourceFolder, newDestinationFolder);
} else {
// 如果当前文件是文件，则复制该文件到目标文件夹中
String newFilePath = file.getAbsolutePath().replace(sourceFolder.getAbsolutePath(), destinationFolder.getAbsolutePath());
File newFile = new File(newFilePath);
print(true,"当前文件不是文件夹:["+file.getAbsolutePath()+"]==>复制到目标文件中:["+newFile.getAbsolutePath()+"]");
java.nio.file.Files.copy(file.toPath(), newFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
}
}
}

private static void print(boolean printStep, String info){
if(printStep) {
System.out.println("========step=" + step++);
}
System.out.println(info);
}

private static void print(String info){
print(false, info);
}
}