response.setCode(ResponseCode.SUCCESS_VALUE);
response.setRemark(null);
try {
FileRegion fileRegion =
new OneMessageTransfer(response.encodeHeader(selectMapedBufferResult.getSize()),
selectMapedBufferResult);
ctx.channel().writeAndFlush(fileRegion).addListener(new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
selectMapedBufferResult.release();