程序包 java.util.zip

类 GZIPInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

java.util.zip.InflaterInputStream

java.util.zip.GZIPInputStream

所有已实现的接口:

Closeable, AutoCloseable

public class GZIPInputStream
extends InflaterInputStream

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

另请参阅:

InflaterInputStream

字段概要

字段

限定符和类型	字段	说明
protected CRC32	crc	CRC-32 for uncompressed data.
protected boolean	eos	Indicates end of input stream.
static int	GZIP_MAGIC	GZIP header magic number.

从类继承的字段 java.io.FilterInputStream

in

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

buf, inf, len

构造器概要

构造器

构造器	说明
GZIPInputStream(InputStream in)	Creates a new input stream with a default buffer size.
GZIPInputStream(InputStream in, int size)	Creates a new input stream with the specified buffer size.

方法概要

限定符和类型	方法	说明
void	close()	Closes this input stream and releases any system resources associated with the stream.
int	read(byte[] buf, int off, int len)	Reads uncompressed data into an array of bytes.

从类继承的方法 java.io.FilterInputStream

read

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

available, fill, mark, markSupported, read, reset, skip

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

GZIP_MAGIC

public static final int GZIP_MAGIC

GZIP header magic number.

另请参阅:

常量字段值

crc

protected CRC32 crc

CRC-32 for uncompressed data.

eos

protected boolean eos

Indicates end of input stream.

构造器详细资料

GZIPInputStream

public GZIPInputStream(InputStream in,
                       int size)
                throws IOException

Creates a new input stream with the specified buffer size.

参数:

in - the input stream

size - the input buffer size

抛出:

ZipException - if a GZIP format error has occurred or the compression method used is unsupported

IOException - if an I/O error has occurred

IllegalArgumentException - if size <= 0

GZIPInputStream

public GZIPInputStream(InputStream in)
                throws IOException

Creates a new input stream with a default buffer size.

参数:

in - the input stream

抛出:

ZipException - if a GZIP format error has occurred or the compression method used is unsupported

IOException - if an I/O error has occurred

方法详细资料

read

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

Reads uncompressed data into an array of bytes. If len is not zero, the method will block until some input can be decompressed; otherwise, no bytes are read and 0 is returned.

覆盖:

read 在类中 InflaterInputStream

参数:

buf - the buffer into which the data is read

off - the start offset in the destination array b

len - the maximum number of bytes read

返回:

the actual number of bytes read, or -1 if the end of the compressed input stream is reached

抛出:

NullPointerException - If buf is null.

IndexOutOfBoundsException - If off is negative, len is negative, or len is greater than buf.length - off

ZipException - if the compressed input data is corrupt.

IOException - if an I/O error has occurred.

另请参阅:

FilterInputStream.in

close

public void close()
           throws IOException

Closes this input stream and releases any system resources associated with the stream.

指定者:

close 在接口中 AutoCloseable

指定者:

close 在接口中 Closeable

覆盖:

close 在类中 InflaterInputStream

抛出:

IOException - if an I/O error has occurred

另请参阅:

FilterInputStream.in