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Added in API level 1
Summary: Fields | Inherited Fields | Ctors | Methods | Inherited Methods | [Expand All]

GZIPOutputStream

public class GZIPOutputStream
extends DeflaterOutputStream

java.lang.Object
   ↳ java.io.OutputStream
     ↳ java.io.FilterOutputStream
       ↳ java.util.zip.DeflaterOutputStream
         ↳ java.util.zip.GZIPOutputStream

该类实现了用于以GZIP文件格式写入压缩数据的流过滤器。

Summary

Fields
protected CRC32 crc

未压缩数据的CRC-32。

Inherited fields
From class java.util.zip.DeflaterOutputStream
From class java.io.FilterOutputStream

Public constructors
GZIPOutputStream(OutputStream out, int size)

用指定的缓冲区大小创建一个新的输出流。
GZIPOutputStream(OutputStream out, int size, boolean syncFlush)

用指定的缓冲区大小和刷新模式创建新的输出流。
GZIPOutputStream(OutputStream out)

用默认缓冲区大小创建一个新的输出流。
GZIPOutputStream(OutputStream out, boolean syncFlush)

使用默认缓冲区大小和指定的刷新模式创建新的输出流。

Public methods
void finish()

完成将压缩数据写入输出流而不关闭底层流。
void write(byte[] buf, int off, int len)

将字节数组写入压缩输出流。

Inherited methods
From class java.util.zip.DeflaterOutputStream
From class java.io.FilterOutputStream
From class java.io.OutputStream
From class java.lang.Object
From interface java.io.Closeable
From interface java.io.Flushable
From interface java.lang.AutoCloseable

Fields

crc

Added in API level 1 
CRC32 crc

未压缩数据的CRC-32。

Public constructors

GZIPOutputStream

Added in API level 1 
GZIPOutputStream (OutputStream out, 
                int size)

用指定的缓冲区大小创建一个新的输出流。

通过调用3参数构造函数GZIPOutputStream（out，size，false）来创建新的输出流实例。

Parameters
out OutputStream: the output stream
size int: the output buffer size
Throws
IOException If an I/O error has occurred.
IllegalArgumentException if size is <= 0

GZIPOutputStream

Added in API level 19 
GZIPOutputStream (OutputStream out, 
                int size, 
                boolean syncFlush)

用指定的缓冲区大小和刷新模式创建新的输出流。

Parameters
out OutputStream: the output stream
size int: the output buffer size
syncFlush boolean: if true invocation of the inherited flush() method of this instance flushes the compressor with flush mode SYNC_FLUSH before flushing the output stream, otherwise only flushes the output stream
Throws
IOException If an I/O error has occurred.
IllegalArgumentException if size is <= 0

GZIPOutputStream

Added in API level 1 
GZIPOutputStream (OutputStream out)

用默认缓冲区大小创建一个新的输出流。

通过调用2参数的构造函数GZIPOutputStream（out，false）来创建新的输出流实例。

Parameters
out OutputStream: the output stream
Throws
IOException If an I/O error has occurred.

GZIPOutputStream

Added in API level 19 
GZIPOutputStream (OutputStream out, 
                boolean syncFlush)

使用默认缓冲区大小和指定的刷新模式创建新的输出流。

Parameters
out OutputStream: the output stream
syncFlush boolean: if true invocation of the inherited flush() method of this instance flushes the compressor with flush mode SYNC_FLUSH before flushing the output stream, otherwise only flushes the output stream
Throws
IOException If an I/O error has occurred.

Public methods

finish

Added in API level 1 
void finish ()

完成将压缩数据写入输出流而不关闭底层流。 连续应用多个过滤器到相同的输出流时使用此方法。

Throws
IOException if an I/O error has occurred

write

Added in API level 1 
void write (byte[] buf, 
                int off, 
                int len)

将字节数组写入压缩输出流。 该方法将阻塞，直到写入所有字节。

Parameters
buf byte: the data to be written
off int: the start offset of the data
len int: the length of the data
Throws
IOException If an I/O error has occurred.
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