程序包 java.util.zip

类 GZIPOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

java.util.zip.DeflaterOutputStream

java.util.zip.GZIPOutputStream

所有已实现的接口:

Closeable, Flushable, AutoCloseable

public class GZIPOutputStream
extends DeflaterOutputStream

This class implements a stream filter for writing compressed data in the GZIP file format.

字段概要

字段

限定符和类型	字段	说明
protected CRC32	crc	CRC-32 of uncompressed data.

从类继承的字段 java.util.zip.DeflaterOutputStream

buf, def

从类继承的字段 java.io.FilterOutputStream

out

构造器概要

构造器

构造器	说明
GZIPOutputStream(OutputStream out)	Creates a new output stream with a default buffer size.
GZIPOutputStream(OutputStream out, boolean syncFlush)	Creates a new output stream with a default buffer size and the specified flush mode.
GZIPOutputStream(OutputStream out, int size)	Creates a new output stream with the specified buffer size.
GZIPOutputStream(OutputStream out, int size, boolean syncFlush)	Creates a new output stream with the specified buffer size and flush mode.

方法概要

限定符和类型	方法	说明
void	finish()	Finishes writing compressed data to the output stream without closing the underlying stream.
void	write(byte[] buf, int off, int len)	Writes array of bytes to the compressed output stream.

从类继承的方法 java.util.zip.DeflaterOutputStream

close, deflate, flush, write

从类继承的方法 java.io.FilterOutputStream

write

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

crc

protected CRC32 crc

CRC-32 of uncompressed data.

构造器详细资料

GZIPOutputStream

public GZIPOutputStream(OutputStream out,
                        int size)
                 throws IOException

Creates a new output stream with the specified buffer size.

The new output stream instance is created as if by invoking the 3-argument constructor GZIPOutputStream(out, size, false).

参数:

out - the output stream

size - the output buffer size

抛出:

IOException - If an I/O error has occurred.

IllegalArgumentException - if size <= 0

GZIPOutputStream

public GZIPOutputStream(OutputStream out,
                        int size,
                        boolean syncFlush)
                 throws IOException

Creates a new output stream with the specified buffer size and flush mode.

参数:

out - the output stream

size - the output buffer size

syncFlush - if true invocation of the inherited DeflaterOutputStream#flush() method of this instance flushes the compressor with flush mode Deflater#SYNC_FLUSH before flushing the output stream, otherwise only flushes the output stream

抛出:

IOException - If an I/O error has occurred.

IllegalArgumentException - if size <= 0

从以下版本开始:

1.7

GZIPOutputStream

public GZIPOutputStream(OutputStream out)
                 throws IOException

Creates a new output stream with a default buffer size.

The new output stream instance is created as if by invoking the 2-argument constructor GZIPOutputStream(out, false).

参数:

out - the output stream

抛出:

IOException - If an I/O error has occurred.

GZIPOutputStream

public GZIPOutputStream(OutputStream out,
                        boolean syncFlush)
                 throws IOException

Creates a new output stream with a default buffer size and the specified flush mode.

参数:

out - the output stream

syncFlush - if true invocation of the inherited DeflaterOutputStream#flush() method of this instance flushes the compressor with flush mode Deflater#SYNC_FLUSH before flushing the output stream, otherwise only flushes the output stream

抛出:

IOException - If an I/O error has occurred.

从以下版本开始:

1.7

方法详细资料

write

public void write(byte[] buf,
                  int off,
                  int len)
           throws IOException

Writes array of bytes to the compressed output stream. This method will block until all the bytes are written.

覆盖:

write 在类中 DeflaterOutputStream

参数:

buf - the data to be written

off - the start offset of the data

len - the length of the data

抛出:

IOException - If an I/O error has occurred.

另请参阅:

FilterOutputStream.write(int)

finish

public void finish()
            throws IOException

Finishes writing compressed data to the output stream without closing the underlying stream. Use this method when applying multiple filters in succession to the same output stream.

覆盖:

finish 在类中 DeflaterOutputStream

抛出:

IOException - if an I/O error has occurred