Snappy-java 解压文件

snappy-java-1.1.2.6.jar 版本用的这个

public static JSONArray decompress() {

List<MapValue> list = new ArrayList<MapValue>();

try {

byte[] contents = Files.toByteArray(new File(

"F:/spz/20161028145900.9.ttr.pack.spz"));

SnappyFramedInputStream is = new SnappyFramedInputStream(

new ByteArrayInputStream(contents));

 

int unLen = Snappy.uncompressedLength(contents);

ByteArrayOutputStream os = new ByteArrayOutputStream(unLen);

is.transferTo(os);

os.close();

byte[] re = os.toByteArray();

MessageUnpacker unpacker = MessagePack.newDefaultUnpacker(re);

 

while (unpacker.hasNext()) {

Value v = unpacker.unpackValue();

switch (v.getValueType()) {

case MAP:

MapValue map = v.asMapValue();

list.add(map);

break;

}

 

}

 

is.close();

 

} catch (Exception e) {

e.printStackTrace();

}

 

if (list != null && !list.isEmpty()) {

return JSONArray.parseArray(list.toString());

} else {

return null;

}

 

}

 

到标红那里解压结束 ,后面是msgpack反序列化.msgpack我用的是源码 jar发现不好使