| | |
| | | import io.netty.buffer.ByteBuf; |
| | | import io.netty.channel.ChannelHandlerContext; |
| | | import io.netty.handler.codec.MessageToByteEncoder; |
| | | import lombok.extern.slf4j.Slf4j; |
| | | |
| | | import java.util.Arrays; |
| | | |
| | | @Slf4j |
| | | public class MessageProtocolEncoder extends MessageToByteEncoder<BaseCommand> { |
| | | @Override |
| | | protected void encode(ChannelHandlerContext ctx, BaseCommand command, ByteBuf out) throws Exception { |
| | | out.writeShort(command.getDataHeader()); // 写入帧头 |
| | | out.writeShort(command.getDataLength()); // 写入数据长度 |
| | | out.writeByte(command.getCmdCode()); // 写入指令编号 |
| | | |
| | | command.encode(out); // 编码具体负载 |
| | | // 打印 |
| | | if(command.getCmdCode()!=0x02) { |
| | | printHex(out); |
| | | } |
| | | } |
| | | // 打印编码后的字节数组 |
| | | private void printHex(ByteBuf out) |
| | | { |
| | | // 打印编码后的字节数组 |
| | | byte[] encodedBytes = new byte[out.readableBytes()]; // 创建字节数组,大小为可读字节数 |
| | | out.getBytes(out.readerIndex(), encodedBytes); // 读取ByteBuf中的字节到字节数组中 |
| | | // log.warn("Encoded message bytes: {}", Arrays.toString(encodedBytes)); |
| | | // 将字节数组转换为十六进制格式 |
| | | StringBuilder hexString = new StringBuilder(); |
| | | for (byte b : encodedBytes) { |
| | | hexString.append(String.format("%02X ", b)); // 将每个字节转换为两位十六进制并加上空格 |
| | | } |
| | | |
| | | log.warn("Encoded message in hex: {}", hexString.toString().trim()); |
| | | } |
| | | } |