public void Serialize(ref JT809MessagePackWriter writer, TJT809Bodies value, IJT809Config config)
{
writer.WriteStringPadRight(value.VehicleNo, 21);
writer.WriteByte((byte)value.VehicleColor);
writer.WriteUInt16(value.SubBusinessType);
try
{
// 先写入内容，然后在根据内容反写内容长度
writer.Skip(4, out int subContentLengthPosition);
if (value.SubBodies != null)
{
JT809MessagePackFormatterResolverExtensions.JT809DynamicSerialize(
config.GetMessagePackFormatterByType(value.SubBodies.GetType()),
ref writer, value.SubBodies,
config);
}
writer.WriteInt32Return(writer.GetCurrentPosition() - subContentLengthPosition - 4, subContentLengthPosition);
}
catch
{
throw new JT809Exception(JT809ErrorCode.SubBodiesParseError, $"SubBusinessType>{value.SubBusinessType.ToString()}");
}
}
public void Serialize(ref JT809MessagePackWriter writer, JT809_0x1400_0x1403 value, IJT809Config config)
{
if (config.Version == JT809Version.JTT2011)
{
writer.WriteUInt32(value.InfoID);
writer.WriteByte((byte)value.Result);
}
else
{
writer.WriteBigNumber(value.SourcePlatformId, 11);
writer.WriteUInt16((ushort)value.WarnType);
writer.WriteUTCDateTime(value.WarnTime);
writer.WriteUTCDateTime(value.StartTime);
writer.WriteUTCDateTime(value.EndTime);
writer.WriteStringPadRight(value.VehicleNo, 21);
writer.WriteByte((byte)value.VehicleColor);
writer.WriteBigNumber(value.DestinationPlatformId, 11);
writer.WriteUInt32(value.DRVLineId);
// 先计算内容长度（汉字为两个字节）
writer.Skip(4, out int lengthPosition);
writer.WriteString(value.InfoContent);
writer.WriteInt32Return(writer.GetCurrentPosition() - lengthPosition - 4, lengthPosition);
}
}
public void Serialize(ref JT809MessagePackWriter writer, JT809_0x9300 value, IJT809Config config)
{
writer.WriteUInt16(value.SubBusinessType);
try
{
// 先写入内容，然后在根据内容反写内容长度
writer.Skip(4, out int subContentLengthPosition);
if (value.SubBodies != null)
{
if (!value.SubBodies.SkipSerialization)
{
JT809MessagePackFormatterResolverExtensions.JT809DynamicSerialize(
value.SubBodies,
ref writer, value.SubBodies,
config);
}
}
writer.WriteInt32Return(writer.GetCurrentPosition() - subContentLengthPosition - 4, subContentLengthPosition);
}
catch
{
throw new JT809Exception(JT809ErrorCode.SubBodiesParseError, $"SubBusinessType>{value.SubBusinessType.ToString()}");
}
}
public void Serialize(ref JT809MessagePackWriter writer, JT809Package value, IJT809Config config)
{
// -----------开始组包----------
// 1.起始符
writer.WriteByte(value.BeginFlag);
// 2.写入头部数据
// 2.1.跳过数据长度的写入
writer.Skip(4, out int lengthPosition);
// 2.2.报文序列号
value.Header.MsgSN = value.Header.MsgSN > 0 ? value.Header.MsgSN : config.MsgSNDistributed.Increment();
writer.WriteUInt32(value.Header.MsgSN);
// 2.3.业务数据类型
writer.WriteUInt16(value.Header.BusinessType);
// 2.4.下级平台接入码
writer.WriteUInt32(value.Header.MsgGNSSCENTERID);
// 2.5.版本号
writer.WriteArray(value.Header.Version.Buffer);
// 2.6.报文加密
writer.WriteByte((byte)value.Header.EncryptFlag);
// 2.7.数据加密密钥
writer.WriteUInt32(value.Header.EncryptKey);
// 3.写入数据体
// 3.1.记录当前开始位置
int startIndex = writer.GetCurrentPosition();
// 3.2.写入数据对应数据体
if (value.Bodies != null)
{
JT809MessagePackFormatterResolverExtensions.JT809DynamicSerialize(
config.GetMessagePackFormatterByType(value.Bodies.GetType()),
ref writer, value.Bodies,
config);
}
// 3.3.记录当前结束位置
int endIndex = writer.GetCurrentPosition();
int contentLength = endIndex - startIndex;
if (contentLength > 0)
{
// 3.4. 数据加密
switch (value.Header.EncryptFlag)
{
case JT809Header_Encrypt.None:
break;
case JT809Header_Encrypt.Common:
// 3.5. 提取数据体并进行加密处理
byte[] messageBodyDatEncrypted = config.Encrypt.Encrypt(writer.Extract(startIndex), config.EncryptOptions, value.Header.EncryptKey);
int flagLength = messageBodyDatEncrypted.Length - contentLength;
if (flagLength == 0)
{
// 相等复制
writer.CopyTo(messageBodyDatEncrypted, startIndex);
}
else if (flagLength > 0)
{
// 扩容
writer.Skip(flagLength, out _);
writer.CopyTo(messageBodyDatEncrypted, startIndex);
}
else
{
// 缩减
writer.CopyTo(messageBodyDatEncrypted, startIndex);
writer.Shrink(-flagLength);
}
break;
}
}
// 4.计算内容的总长度(校验码2+终止符1=3)
writer.WriteInt32Return(writer.GetCurrentPosition() + 3, lengthPosition);
// 5.校验码
writer.WriteCRC16();
// 6.终止符
writer.WriteByte(value.EndFlag);
// 7.转义
writer.WriteEncode();
// -----------组包完成----------
}