类 FileUtils

字段详细资料

• POI_FILES

  public static final String POI_FILES

  另请参阅:

  常量字段值

• EX_CACHE

  public static final String EX_CACHE

  另请参阅:

  常量字段值

方法详细资料

• readFileToByteArray

  public static byte[] readFileToByteArray(File file)
                                    throws IOException

  Reads the contents of a file into a byte array. * The file is always closed.

  参数:

  file -

  返回:

  抛出:

  IOException

• openInputStream

  public static FileInputStream openInputStream(File file)
                                         throws IOException

  Opens a FileInputStream for the specified file, providing better error messages than simply calling new FileInputStream(file).

  At the end of the method either the stream will be successfully opened, or an exception will have been thrown.

  An exception is thrown if the file does not exist. An exception is thrown if the file object exists but is a directory. An exception is thrown if the file exists but cannot be read.

  参数:

  file -

  返回:

  抛出:

  IOException

• writeToFile

  public static void writeToFile(File file,
                                 InputStream inputStream)

  Write inputStream to file

  参数:

  file - file

  inputStream - inputStream

• writeToFile

  public static void writeToFile(File file,
                                 InputStream inputStream,
                                 boolean closeInputStream)

  Write inputStream to file

  参数:

  file - file

  inputStream - inputStream

  closeInputStream - closeInputStream

• createPoiFilesDirectory

  public static void createPoiFilesDirectory()

• createCacheTmpFile

  public static File createCacheTmpFile()

• createTmpFile

  public static File createTmpFile(String fileName)

• delete

  public static void delete(File file)

  delete file

  参数:

  file -

• getTempFilePrefix

  public static String getTempFilePrefix()

• setTempFilePrefix

  public static void setTempFilePrefix(String tempFilePrefix)

• getPoiFilesPath

  public static String getPoiFilesPath()

• setPoiFilesPath

  public static void setPoiFilesPath(String poiFilesPath)

• getCachePath

  public static String getCachePath()

• setCachePath

  public static void setCachePath(String cachePath)