ByteBuf bodyBuf = ByteBufAllocator.DEFAULT.heapBuffer();
//* --------------------------------------------------------bytes =14
//* byte[2] servicesName-(attr-index) 远程服务名
bodyBuf.writeShort(reqMsg.getServiceName());
//* byte[2] servicesGroup-(attr-index) 远程服务分组
bodyBuf.writeShort(reqMsg.getServiceGroup());
//* byte[2] servicesVersion-(attr-index) 远程服务版本
bodyBuf.writeShort(reqMsg.getServiceVersion());
//* byte[2] servicesMethod-(attr-index) 远程服务方法名
bodyBuf.writeShort(reqMsg.getTargetMethod());
//* byte[2] serializeType-(attr-index) 序列化策略