import com.jcraft.jzlib.Deflater; //导入依赖的package包/类
public SpdyHeaderBlockZlibCompressor(int version, int compressionLevel) throws GZIPException {
    if (version < SPDY_MIN_VERSION || version > SPDY_MAX_VERSION) {
        throw new IllegalArgumentException(
                "unsupported version: " + version);
    }
    if (compressionLevel < 0 || compressionLevel > 9) {
        throw new IllegalArgumentException(
                "compressionLevel: " + compressionLevel + " (expected: 0-9)");
    }
    compressor = new Deflater(compressionLevel);
    if (version < 3) {
        compressor.setDictionary(SPDY2_DICT, SPDY2_DICT.length);
    } else {
        compressor.setDictionary(SPDY_DICT, SPDY_DICT.length);
    }
}
 

import com.jcraft.jzlib.Deflater; //导入依赖的package包/类
public TDeflater(int level, boolean noHeader) {
    super();
    if (level < DEFAULT_COMPRESSION || level > BEST_COMPRESSION) {
        throw new IllegalArgumentException();
    }
    compressLevel = level;
    try {
        impl = new Deflater(compressLevel, strategy, noHeader);
    } catch (GZIPException e) {
        // do nothing
    }
    nowrap = noHeader;
}
 

import com.jcraft.jzlib.Deflater; //导入依赖的package包/类
private static byte[] compressBuffer(byte[] rawBuffer) throws IOException {
	Deflater deflater = new Deflater();
	deflater.init(JZlib.Z_DEFAULT_COMPRESSION, 27, 9);
	ByteArrayOutputStream out = new ByteArrayOutputStream();
	DeflaterOutputStream dos = new DeflaterOutputStream(out, deflater);
	dos.write(rawBuffer);
	dos.flush();
	dos.close();
	return out.toByteArray();
}
 

import com.jcraft.jzlib.Deflater; //导入依赖的package包/类
static void fail(Deflater z, String message, int resultCode) {
    throw deflaterException(z, message, resultCode);
}
 

import com.jcraft.jzlib.Deflater; //导入依赖的package包/类
static CompressionException deflaterException(Deflater z, String message, int resultCode) {
    return new CompressionException(message + " (" + resultCode + ')' + (z.msg != null? ": " + z.msg : ""));
}