package chat.server; import static cn.wildfirechat.common.ErrorCode.ERROR_CODE_SUCCESS; import java.io.UnsupportedEncodingException; import cn.wildfirechat.common.ErrorCode; import io.netty.buffer.ByteBuf; import io.netty.buffer.Unpooled; public class Test { public static void main(String[] args) throws UnsupportedEncodingException { ByteBuf ackPayload = Unpooled.buffer(1); ErrorCode errorCode = ERROR_CODE_SUCCESS; ackPayload.ensureWritable(1).writeByte(errorCode.getCode()); ackPayload.setByte(0, errorCode.getCode()); byte[] bytes = ackPayload.array(); String value = new String(bytes, "UTF-8"); System.out.println(value); } }