程序包 com.walker.infrastructure.utils

类 FileCopyUtils

java.lang.Object

com.walker.infrastructure.utils.FileCopyUtils

public abstract class FileCopyUtils
extends Object

Simple utility methods for file and stream copying. All copy methods use a block size of 4096 bytes, and close all affected streams when done.

Mainly for use within the framework, but also useful for application code.

从以下版本开始:

06.10.2003

作者:

Juergen Hoeller

字段概要

字段

修饰符和类型	字段	说明
static final int	BUFFER_SIZE

构造器概要

构造器

构造器	说明
FileCopyUtils()

方法概要

修饰符和类型	方法	说明
static void	copy(byte[] in, File out)	Copy the contents of the given byte array to the given output File.
static void	copy(byte[] in, OutputStream out)	Copy the contents of the given byte array to the given OutputStream.
static long	copy(File in, File out)	Copy the contents of the given input File to the given output File.
static long	copy(InputStream in, OutputStream out)
static long	copy(InputStream in, OutputStream out, boolean closeOutput)	Copy the contents of the given InputStream to the given OutputStream.
static int	copy(Reader in, Writer out)	Copy the contents of the given Reader to the given Writer.
static void	copy(String in, Writer out)	Copy the contents of the given String to the given output Writer.
static byte[]	copyToByteArray(File in)	Copy the contents of the given input File into a new byte array.
static byte[]	copyToByteArray(InputStream in)	Copy the contents of the given InputStream into a new byte array.
static String	copyToString(Reader in)	Copy the contents of the given Reader into a String.

从类继承的方法 java.lang.Object

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

字段详细资料

BUFFER_SIZE

public static final int BUFFER_SIZE

另请参阅:

• 常量字段值

构造器详细资料

FileCopyUtils

public FileCopyUtils()

方法详细资料

copy

public static long copy(File in,
 File out)
                 throws IOException

Copy the contents of the given input File to the given output File.

参数:

in - the file to copy from

out - the file to copy to

返回:

the number of bytes copied

抛出:

IOException - in case of I/O errors

copy

public static void copy(byte[] in,
 File out)
                 throws IOException

Copy the contents of the given byte array to the given output File.

参数:

in - the byte array to copy from

out - the file to copy to

抛出:

IOException - in case of I/O errors

copyToByteArray

public static byte[] copyToByteArray(File in)
                              throws IOException

Copy the contents of the given input File into a new byte array.

参数:

in - the file to copy from

返回:

the new byte array that has been copied to

抛出:

IOException - in case of I/O errors

copy

public static long copy(InputStream in,
 OutputStream out,
 boolean closeOutput)
                 throws IOException

Copy the contents of the given InputStream to the given OutputStream. Closes both streams when done.

参数:

in - 输入流

out - 要拷贝的输出流

closeOutput - 是否立即关闭输出流

返回:

the number of bytes copied

抛出:

IOException - in case of I/O errors

copy

public static long copy(InputStream in,
 OutputStream out)
                 throws IOException

抛出:

IOException

copy

public static void copy(byte[] in,
 OutputStream out)
                 throws IOException

Copy the contents of the given byte array to the given OutputStream. Closes the stream when done.

参数:

in - the byte array to copy from

out - the OutputStream to copy to

抛出:

IOException - in case of I/O errors

copyToByteArray

public static byte[] copyToByteArray(InputStream in)
                              throws IOException

Copy the contents of the given InputStream into a new byte array. Closes the stream when done.

参数:

in - the stream to copy from

返回:

the new byte array that has been copied to

抛出:

IOException - in case of I/O errors

copy

public static int copy(Reader in,
 Writer out)
                throws IOException

Copy the contents of the given Reader to the given Writer. Closes both when done.

参数:

in - the Reader to copy from

out - the Writer to copy to

返回:

the number of characters copied

抛出:

IOException - in case of I/O errors

copy

public static void copy(String in,
 Writer out)
                 throws IOException

Copy the contents of the given String to the given output Writer. Closes the write when done.

参数:

in - the String to copy from

out - the Writer to copy to

抛出:

IOException - in case of I/O errors

copyToString

public static String copyToString(Reader in)
                           throws IOException

Copy the contents of the given Reader into a String. Closes the reader when done.

参数:

in - the reader to copy from

返回:

the String that has been copied to

抛出:

IOException - in case of I/O errors