com.alibaba.excel.util

Class FileUtils

java.lang.Object

com.alibaba.excel.util.FileUtils

public class FileUtils
extends Object

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Author:

Apache Software Foundation (ASF)

Field Summary

Fields

Modifier and Type	Field and Description
static String	EX_CACHE
static String	POI_FILES

Method Summary

Modifier and Type	Method and Description
static File	createCacheTmpFile()
static File	createDirectory(File directory)
static void	createPoiFilesDirectory()
static File	createTmpFile(String fileName)
static void	delete(File file) delete file
static String	getCachePath()
static String	getPoiFilesPath()
static String	getTempFilePrefix()
static FileInputStream	openInputStream(File file) Opens a FileInputStream for the specified file, providing better error messages than simply calling new FileInputStream(file).
static byte[]	readFileToByteArray(File file) Reads the contents of a file into a byte array.
static void	setCachePath(String cachePath)
static void	setPoiFilesPath(String poiFilesPath)
static void	setTempFilePrefix(String tempFilePrefix)
static void	writeToFile(File file, InputStream inputStream) Write inputStream to file
static void	writeToFile(File file, InputStream inputStream, boolean closeInputStream) Write inputStream to file

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

POI_FILES

public static final String POI_FILES

See Also:

Constant Field Values

EX_CACHE

public static final String EX_CACHE

See Also:

Constant Field Values

Method Detail

readFileToByteArray

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

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

Parameters:

file -

Returns:

Throws:

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.

Parameters:

file -

Returns:

Throws:

IOException

writeToFile

public static void writeToFile(File file,
                               InputStream inputStream)

Write inputStream to file

Parameters:

file - file

inputStream - inputStream

writeToFile

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

Write inputStream to file

Parameters:

file - file

inputStream - inputStream

closeInputStream - closeInputStream

createPoiFilesDirectory

public static void createPoiFilesDirectory()

createCacheTmpFile

public static File createCacheTmpFile()

createTmpFile

public static File createTmpFile(String fileName)

createDirectory

public static File createDirectory(File directory)

Parameters:

directory -

delete

public static void delete(File file)

delete file

Parameters:

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)