public class HttpContentCompressor extends HttpContentEncoder
HttpMessage and an HttpChunk in gzip or
deflate encoding while respecting the "Accept-Encoding" header.
If there is no matching encoding, no compression is done. For more
information on how this handler modifies the message, please refer to
HttpContentEncoder.ChannelHandler.Sharable| 构造器和说明 |
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HttpContentCompressor()
Creates a new handler with the default compression level (6), default window size
() and default memory level ().
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HttpContentCompressor(int compressionLevel)
Creates a new handler with the specified compression level, default window size
() and default memory level ().
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HttpContentCompressor(int compressionLevel,
int windowBits,
int memLevel)
Creates a new handler with the specified compression level, window size, and memory level.
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| 限定符和类型 | 方法和说明 |
|---|---|
protected java.lang.String |
getTargetContentEncoding(java.lang.String acceptEncoding)
Returns the expected content encoding of the encoded content.
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protected EncoderEmbedder<ChannelBuffer> |
newContentEncoder(HttpMessage msg,
java.lang.String acceptEncoding)
Returns a new
EncoderEmbedder that encodes the HTTP message
content. |
afterAdd, afterRemove, beforeAdd, beforeRemove, channelClosed, messageReceived, writeRequestedbindRequested, channelBound, channelConnected, channelDisconnected, channelInterestChanged, channelOpen, channelUnbound, childChannelClosed, childChannelOpen, closeRequested, connectRequested, disconnectRequested, exceptionCaught, handleDownstream, handleUpstream, setInterestOpsRequested, unbindRequested, writeCompletepublic HttpContentCompressor()
public HttpContentCompressor(int compressionLevel)
compressionLevel - 1 yields the fastest compression and 9 yields the
best compression. 0 means no compression. The default
compression level is 6.public HttpContentCompressor(int compressionLevel,
int windowBits,
int memLevel)
compressionLevel - 1 yields the fastest compression and 9 yields the
best compression. 0 means no compression. The default
compression level is 6.windowBits - The base two logarithm of the size of the history buffer. The
value should be in the range 9 to 15 inclusive.
Larger values result in better compression at the expense of
memory usage. The default value is .memLevel - How much memory should be allocated for the internal compression
state. 1 uses minimum memory and 9 uses maximum
memory. Larger values result in better and faster compression
at the expense of memory usage. The default value is .protected EncoderEmbedder<ChannelBuffer> newContentEncoder(HttpMessage msg, java.lang.String acceptEncoding) throws java.lang.Exception
HttpContentEncoderEncoderEmbedder that encodes the HTTP message
content.newContentEncoder 在类中 HttpContentEncoderacceptEncoding - the value of the "Accept-Encoding" headerEncoderEmbedder if there is a supported encoding
in acceptEncoding. null otherwise.java.lang.Exceptionprotected java.lang.String getTargetContentEncoding(java.lang.String acceptEncoding)
throws java.lang.Exception
HttpContentEncodergetTargetContentEncoding 在类中 HttpContentEncoderacceptEncoding - the value of the "Accept-Encoding" headerjava.lang.Exception