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();

  }

  }

 

1. private void copyFolder(File src, File dest) throws IOException {
2.  
   if (src.isDirectory()) {
3.  
   if (!dest.exists()) {
4.  
   dest.mkdir();
5.  
   }
6.  
   String files[] = src.list();
7.  
   for (String file : files) {
8.  
   File srcFile = new File(src, file);
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   File destFile = new File(dest, file);
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    // 递归复制
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    copyFolder(srcFile, destFile);
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    }
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    } else {
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    InputStream in = new FileInputStream(src);
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    OutputStream out = new FileOutputStream(dest);
16.  
     
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    byte[] buffer = new byte[1024];
18.  
     
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    int length;
20.  
     
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    while ((length = in.read(buffer)) > 0) {
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    out.write(buffer, 0, length);
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    }
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    in.close();
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    out.close();
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    }
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    }