mirror of
https://gitee.com/san-bing/JChargePointProtocol
synced 2026-05-05 18:39:56 +08:00
224 lines
8.4 KiB
Java
224 lines
8.4 KiB
Java
/**
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* 开源代码，仅供学习和交流研究使用，商用请联系三丙
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* 微信：mohan_88888
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* 抖音：程序员三丙
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* 付费课程知识星球：https://t.zsxq.com/aKtXo
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*/
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package sanbing.jcpp.protocol.yunkuaichong;
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import cn.hutool.core.text.CharSequenceUtil;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.Unpooled;
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import org.apache.commons.lang3.StringUtils;
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import sanbing.jcpp.infrastructure.util.codec.BCDUtil;
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import sanbing.jcpp.proto.gen.ProtocolProto;
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import sanbing.jcpp.protocol.listener.tcp.TcpSession;
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import sanbing.jcpp.protocol.listener.tcp.enums.SequenceNumberLength;
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import sanbing.jcpp.protocol.yunkuaichong.enums.YunKuaiChongDownlinkCmdEnum;
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import java.math.BigDecimal;
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import java.math.RoundingMode;
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import java.nio.charset.StandardCharsets;
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import java.text.DecimalFormat;
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import java.time.LocalTime;
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import java.util.List;
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import static sanbing.jcpp.infrastructure.util.codec.ByteUtil.crcSum;
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import static sanbing.jcpp.infrastructure.util.codec.ByteUtil.toBytes;
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/**
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* @author baigod
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*/
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public class AbstractYunKuaiChongCmdExe {
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private static final byte TOP_BYTE = 0x00;
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private static final byte PEAK_BYTE = 0x01;
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private static final byte FLAT_BYTE = 0x02;
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private static final byte VALLEY_BYTE = 0x03;
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protected static final byte YUNKUAICHONG_HEAD = 0x68;
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protected static final int YUNKUAICHONG_NORMAL_ENCRYPTION_FLAG = 0;
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private static final DecimalFormat PRICING_ID_DECIMAL_FORMAT = new DecimalFormat("0000");
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protected static String decodeTradeNo(byte[] tradeNo) {
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String tradeNoStr = BCDUtil.toString(tradeNo);
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return CharSequenceUtil.strip(tradeNoStr, "0", null);
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}
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protected byte[] encodePricingId(long pricingId) {
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return BCDUtil.toBytes(PRICING_ID_DECIMAL_FORMAT.format(pricingId % 10000));
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}
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protected static byte getFlagForCurrentTime(List<ProtocolProto.PeriodProto> periodList, LocalTime currentTime) {
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for (ProtocolProto.PeriodProto period : periodList) {
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LocalTime beginLt = LocalTime.parse(period.getBegin());
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LocalTime endLt = "00:00".equals(period.getEnd()) ? LocalTime.MAX : LocalTime.parse(period.getEnd());
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if ((currentTime.equals(beginLt) || currentTime.isAfter(beginLt)) && currentTime.isBefore(endLt)) {
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switch (period.getFlag()) {
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case TOP:
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return TOP_BYTE;
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case PEAK:
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return PEAK_BYTE;
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case VALLEY:
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return VALLEY_BYTE;
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default:
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return FLAT_BYTE;
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}
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}
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}
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return FLAT_BYTE; // 默认情况下返回平价
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}
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protected static byte[] encodePileCode(String pileCode) {
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if (StringUtils.length(pileCode) > 32) {
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throw new IllegalArgumentException("云快充可接受最大桩编号为14位");
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}
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String pileCodeStr = StringUtils.leftPad(pileCode, 14, '0');
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return BCDUtil.toBytes(pileCodeStr);
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}
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protected static byte[] encodeGunCode(String gunCode) {
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if (StringUtils.length(gunCode) > 2) {
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throw new IllegalArgumentException("云快充可接受最大枪编号为2位");
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}
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String gunCodeStr = StringUtils.leftPad(gunCode, 2, '0');
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return BCDUtil.toBytes(gunCodeStr);
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}
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protected static byte[] encodeTradeNo(String tradeNo) {
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if (StringUtils.length(tradeNo) > 32) {
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throw new IllegalArgumentException("云快充1.5可接受最大交易流水号为32位");
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}
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String tradeNoStr = StringUtils.leftPad(tradeNo, 32, '0');
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return BCDUtil.toBytes(tradeNoStr);
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}
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protected byte[] encode(YunKuaiChongDownlinkCmdEnum downlinkCmd,
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int seqNo,
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int encryptionFlag,
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ByteBuf msgBody) {
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int msgBodyLength = msgBody.readableBytes();
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ByteBuf response = Unpooled.buffer(msgBodyLength + 6);
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response.writeByte(YUNKUAICHONG_HEAD);
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response.writeByte(msgBodyLength + 4);
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response.writeShortLE(seqNo);
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response.writeByte(encryptionFlag);
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response.writeByte(downlinkCmd.getCmd());
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response.writeBytes(msgBody);
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// 帧校验域：从序列号域到数据域的 CRC 校验，校验多项式为 0x180D,低字节在前，高字节在后
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byte[] checkArr = new byte[msgBodyLength + 4];
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System.arraycopy(response.array(), 2, checkArr, 0, checkArr.length);
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response.writeShortLE(crcSum(checkArr));
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return toBytes(response);
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}
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protected void encodeAndWriteFlush(YunKuaiChongDownlinkCmdEnum downlinkCmd,
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int seqNo,
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int encryptionFlag,
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ByteBuf msgBody,
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TcpSession tcpSession) {
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byte[] encode = encode(downlinkCmd, seqNo, encryptionFlag, msgBody);
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tcpSession.writeAndFlush(Unpooled.copiedBuffer(encode));
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}
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protected void encodeAndWriteFlush(YunKuaiChongDownlinkCmdEnum downlinkCmd,
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ByteBuf msgBody,
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TcpSession tcpSession) {
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byte[] encode = encode(downlinkCmd,
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tcpSession.nextSeqNo(SequenceNumberLength.SHORT),
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YUNKUAICHONG_NORMAL_ENCRYPTION_FLAG,
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msgBody);
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tcpSession.writeAndFlush(Unpooled.copiedBuffer(encode));
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}
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protected static BigDecimal reduceMagnification(long value, int magnification) {
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return new BigDecimal(value).divide(new BigDecimal(magnification), 4, RoundingMode.HALF_UP);
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}
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protected static BigDecimal reduceMagnification(long value, int magnification, int scale) {
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return new BigDecimal(value).divide(new BigDecimal(magnification), scale, RoundingMode.HALF_UP);
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}
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/**
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* 高性能版本：直接写入目标ByteBuf，避免创建中间ByteBuf对象
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* 将字符串参数写入ByteBuf，不足指定长度用0填充（右侧填充）
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* 使用ASCII编码，适用于协议中的字符串字段
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*
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* @param target 目标ByteBuf
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* @param param 要写入的字符串参数，可以为null
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* @param maxLength 目标长度（字节数）
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* @throws IllegalArgumentException 如果参数字节长度超过maxLength
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*/
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protected static void writeParamFillZero(ByteBuf target, String param, int maxLength) {
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if (maxLength <= 0) {
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throw new IllegalArgumentException("maxLength must be positive");
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}
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if (param == null) {
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param = "";
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}
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// 使用ASCII编码，适用于协议字段
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byte[] paramBytes = param.getBytes(StandardCharsets.US_ASCII);
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// 检查长度
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if (paramBytes.length > maxLength) {
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throw new IllegalArgumentException(
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String.format("云快充1.5.0 参数: %s 字节长度 %d 超过最大长度 %d",
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param, paramBytes.length, maxLength));
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}
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// 确保目标ByteBuf有足够的写入空间
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target.ensureWritable(maxLength);
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// 写入数据
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target.writeBytes(paramBytes);
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// 填充剩余空间
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int remainingBytes = maxLength - paramBytes.length;
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if (remainingBytes > 0) {
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target.writeZero(remainingBytes);
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}
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}
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/**
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* 高性能版本：将整数参数作为字节值直接写入ByteBuf，不足指定长度用0填充（右侧填充）
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*
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* @param target 目标ByteBuf
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* @param param 要写入的整数参数（将作为字节值写入，只使用低8位）
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* @param maxLength 目标长度（字节数）
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*/
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protected static void writeParamFillZero(ByteBuf target, int param, int maxLength) {
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if (maxLength <= 0) {
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throw new IllegalArgumentException("maxLength must be positive");
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}
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// 确保目标ByteBuf有足够的写入空间
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target.ensureWritable(maxLength);
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// 将整数作为字节值写入（只使用低8位）
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target.writeByte(param & 0xFF);
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// 计算剩余空间并填充0
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int remainingBytes = maxLength - 1; // 已经写入了1个字节
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if (remainingBytes > 0) {
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target.writeZero(remainingBytes);
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}
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}
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} |