Java 目录和文件的复制

1.复制一个目录及其子目录、文件到另外一个目录

//复制一个目录及其子目录、文件到另外一个目录

public void copyFolder(File src, File dest) throws IOException {

  if (src.isDirectory()) {

  if (!dest.exists()) {

  dest.mkdir();

  }

  String files[] = src.list();

  for (String file : files) {

  File srcFile = new File(src, file);

  File destFile = new File(dest, file);

  // 递归复制

  copyFolder(srcFile, destFile);

  }

  } else {

  InputStream in = new FileInputStream(src);

  OutputStream out = new FileOutputStream(dest);

   

  byte[] buffer = new byte[1024];

   

  int length;

  while ((length = in.read(buffer)) > 0) {

  out.write(buffer, 0, length);

  }

  in.close();

  out.close();

  }

  }

private void copyFolder(File src, File dest) throws IOException {
if (src.isDirectory()) {
if (!dest.exists()) {
dest.mkdir();
}
String files[] = src.list();
for (String file : files) {
File srcFile = new File(src, file);
File destFile = new File(dest, file);
// 递归复制
copyFolder(srcFile, destFile);
}
} else {
InputStream in = new FileInputStream(src);
OutputStream out = new FileOutputStream(dest);

byte[] buffer = new byte[ 1024];

int length;

while ((length = in.read(buffer)) > 0) {
out.write(buffer, 0, length);
}
in.close();
out.close();
}
}