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Added in API level 1

Summary: Fields | Inherited Fields | Ctors | Methods | Protected Methods | Inherited Methods | [Expand All]

DeflaterOutputStream

public class DeflaterOutputStream
extends FilterOutputStream

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

Known Direct Subclasses

GZIPOutputStream, ZipOutputStream

Known Indirect Subclasses

JarOutputStream

该类实现了一个输出流过滤器，用于压缩“deflate”压缩格式的数据。它也被用作其他类型压缩过滤器的基础，例如GZIPOutputStream。

也可以看看：

Deflater

摘要(Summary)

Fields
`protected byte[]`	`buf` 输出缓冲区用于写入压缩数据。
`protected Deflater`	`def` 压缩机为这个流。

Inherited fields

From class java.io.FilterOutputStream

Public constructors
`DeflaterOutputStream(OutputStream out, Deflater def, int size, boolean syncFlush)` 用指定的压缩器，缓冲区大小和刷新模式创建一个新的输出流。
`DeflaterOutputStream(OutputStream out, Deflater def, int size)` 用指定的压缩器和缓冲区大小创建一个新的输出流。
`DeflaterOutputStream(OutputStream out, Deflater def, boolean syncFlush)` 用指定的压缩器，刷新模式和默认缓冲区大小创建新的输出流。
`DeflaterOutputStream(OutputStream out, Deflater def)` 用指定的压缩器和默认缓冲区大小创建一个新的输出流。
`DeflaterOutputStream(OutputStream out, boolean syncFlush)` 使用默认压缩器，默认缓冲区大小和指定的刷新模式创建新的输出流。
`DeflaterOutputStream(OutputStream out)` 用默认的压缩器和缓冲区大小创建一个新的输出流。

公共方法(Public methods)
`void`	`close()` 将剩余的压缩数据写入输出流并关闭基础流。
`void`	`finish()` 完成将压缩数据写入输出流而不关闭底层流。
`void`	`flush()` 刷新压缩的输出流。
`void`	`write(byte[] b, int off, int len)` 将一个字节数组写入压缩输出流。
`void`	`write(int b)` 将一个字节写入压缩的输出流。

Protected methods
`void`	`deflate()` 将下一个压缩数据块写入输出流。

继承方法(Inherited methods)

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

buf

Added in API level 1

byte[] buf

输出缓冲区用于写入压缩数据。

def

Added in API level 1

Deflater def

压缩机为这个流。

Public constructors

DeflaterOutputStream

Added in API level 19

DeflaterOutputStream (OutputStream out, 
                Deflater def, 
                int size, 
                boolean syncFlush)

用指定的压缩器，缓冲区大小和刷新模式创建一个新的输出流。

参数(Parameters)
`out`	`OutputStream`: the output stream
`def`	`Deflater`: the compressor ("deflater")
`size`	`int`: the output buffer size
`syncFlush`	`boolean`: if `true` the `flush()` method of this instance flushes the compressor with flush mode `SYNC_FLUSH` before flushing the output stream, otherwise only flushes the output stream

抛出异常(Throws)
`IllegalArgumentException`	if size is <= 0

DeflaterOutputStream

Added in API level 1

DeflaterOutputStream (OutputStream out, 
                Deflater def, 
                int size)

用指定的压缩器和缓冲区大小创建一个新的输出流。

通过调用4参数构造函数DeflaterOutputStream（out，def，size，false）来创建新的输出流实例。

参数(Parameters)
`out`	`OutputStream`: the output stream
`def`	`Deflater`: the compressor ("deflater")
`size`	`int`: the output buffer size

抛出异常(Throws)
`IllegalArgumentException`	if size is <= 0

DeflaterOutputStream

Added in API level 19

DeflaterOutputStream (OutputStream out, 
                Deflater def, 
                boolean syncFlush)

用指定的压缩器，刷新模式和默认缓冲区大小创建新的输出流。

参数(Parameters)
`out`	`OutputStream`: the output stream
`def`	`Deflater`: the compressor ("deflater")
`syncFlush`	`boolean`: if `true` the `flush()` method of this instance flushes the compressor with flush mode `SYNC_FLUSH` before flushing the output stream, otherwise only flushes the output stream

DeflaterOutputStream

Added in API level 1

DeflaterOutputStream (OutputStream out, 
                Deflater def)

用指定的压缩器和默认缓冲区大小创建一个新的输出流。

通过调用3参数的构造函数DeflaterOutputStream（out，def，false）来创建新的输出流实例。

参数(Parameters)
`out`	`OutputStream`: the output stream
`def`	`Deflater`: the compressor ("deflater")

DeflaterOutputStream

Added in API level 19

DeflaterOutputStream (OutputStream out, 
                boolean syncFlush)

使用默认压缩器，默认缓冲区大小和指定的刷新模式创建新的输出流。

参数(Parameters)
`out`	`OutputStream`: the output stream
`syncFlush`	`boolean`: if `true` the `flush()` method of this instance flushes the compressor with flush mode `SYNC_FLUSH` before flushing the output stream, otherwise only flushes the output stream

DeflaterOutputStream

Added in API level 1

DeflaterOutputStream (OutputStream out)

用默认的压缩器和缓冲区大小创建一个新的输出流。

通过调用双参数构造函数DeflaterOutputStream（out，false）来创建新的输出流实例。

参数(Parameters)
`out`	`OutputStream`: the output stream

公共方法(Public methods)

close

Added in API level 1

void close ()

将剩余的压缩数据写入输出流并关闭基础流。

抛出异常(Throws)
`IOException`	if an I/O error has occurred

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。

抛出异常(Throws)
`IOException`	if an I/O error has occurred

flush

Added in API level 1

void flush ()

刷新压缩的输出流。如果syncFlush是true这个压缩输出流构造时，这个方法首先刷新底层compressor与刷新模式SYNC_FLUSH强制所有未决数据刷新输出流，然后刷新输出流。否则，此方法仅刷新输出流而不刷新compressor 。

抛出异常(Throws)
`IOException`	if an I/O error has occurred

write

Added in API level 1

void write (byte[] b, 
                int off, 
                int len)

将一个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。

参数(Parameters)
`b`	`byte`: the data to be written
`off`	`int`: the start offset of the data
`len`	`int`: the length of the data

抛出异常(Throws)
`IOException`	if an I/O error has occurred

write

Added in API level 1

void write (int b)

将一个字节写入压缩的输出流。该方法将阻塞，直到可以写入字节。

参数(Parameters)
`b`	`int`: the byte to be written

抛出异常(Throws)
`IOException`	if an I/O error has occurred

Protected methods

deflate

Added in API level 1

void deflate ()

将下一个压缩数据块写入输出流。

抛出异常(Throws)
`IOException`	if an I/O error has occurred