嵌套删除多级目录, 删除单级目录, 创建多级目录, 复制文件

备一份自己用:

/**
 * 嵌套删除多级目录
 * 
 * @param[in] oPath 目录
 */
private static void deleteFolder(final File oPath)
{
final File[] dirs = oPath.listFiles();
if (dirs != null)
{
for (final File oSubPath : dirs)
{
if (oSubPath.isDirectory())
{
deleteFolder(oSubPath);
}
}
}
oPath.delete();
}

/**
 * 删除单级目录
 * 
 * @param[in] sPath 目录
 */
public static void deleteFolder(final String sPath)
{
final File oPath = new File(sPath);
if (!oPath.exists() || !oPath.isDirectory())
{
return;
}

deleteFolder(oPath);
}

/**
 * 创建多级目录
 * 
 * @param[in] sPath 目录
 * @return 是否创建成功
 */
public static boolean createFolder(final String sPath)
{
try
{
final File oPath = new File(sPath);
if (!oPath.exists())
{
oPath.mkdirs();
}
return true;
}
catch (final Exception e)
{
return false;
}
}

/**
 * 复制文件
 * 
 * @param[in] sFile1
 * @param[in] sFile2
 * @throws IOException
 */
public static void copyFile(final String sFile1, final String sFile2) throws IOException
{
final File oFile1 = new File(sFile1);
if (oFile1.exists())
{
final String sPath = sFile2.substring(0, sFile2.lastIndexOf('\\'));
createFolder(sPath); // 确保目标目录存在

final File oFile2 = new File(sFile2);
final RandomAccessFile inData = new RandomAccessFile(oFile1, "r");
final RandomAccessFile opData = new RandomAccessFile(oFile2, "rw");
final FileChannel inChannel = inData.getChannel();
final FileChannel opChannel = opData.getChannel();
inChannel.transferTo(0, inChannel.size(), opChannel);
//=========================上一行代码与下面的代码功能相同=========================
//final long size = inChannel.size();
//final MappedByteBuffer buf = inChannel.map(FileChannel.MapMode.READ_ONLY, 0, size);
//opChannel.write(buf);
//=================================================================
inChannel.close();
inData.close();
opChannel.close();
opData.close();
}
}