java复制目录工具类

public void copyDirectory(String file1,String file2)throws IOException {if (!new File(file2).exists()) {new File(file2).mkdirs();File[] files=new File(file1).listFiles();for (int i = 0; i < files.length; i++) {System.out.println(files[1].getName());if (files[i].isFile()) {FileInputStream inputStream =new FileInputStream(files[i]);FileOutputStream outputStream =new FileOutputStream(file2+"/"+files[i].getName());byte[] b=new byte[1024*5];int len;while ((len=inputStream.read(b))!=-1) {outputStream.write(b, 0, len);}outputStream.flush();outputStream.close();inputStream.close();}if (files[i].isDirectory()) {copyDirectory(file1+"/"+files[i].getName(), file2+"/"+files[i].getName());}}}}}