public JT809HeaderPackage Deserialize(ref JT809MessagePackReader reader, IJT809Config config)
{
// 1. 验证校验码
if (!config.SkipCRCCode)
{
// 1.2. 验证校验码
if (!reader.CheckXorCodeVali)
{
throw new JT809Exception(JT809ErrorCode.CRC16CheckInvalid, $"{reader.CalculateCheckXorCode}!={reader.RealCheckXorCode}");
}
}
JT809HeaderPackage jT809Package = new JT809HeaderPackage
{
// 2.读取起始头
BeginFlag = reader.ReadStart()
};
// 3.初始化消息头
try
{
jT809Package.Header = JT809HeaderFormatter.Instance.Deserialize(ref reader, config);
}
catch (Exception ex)
{
throw new JT809Exception(JT809ErrorCode.HeaderParseError, $"offset>{reader.ReadCurrentRemainContentLength()}", ex);
}
// 5.数据体处理
// 5.1 判断是否有数据体（总长度-固定长度）> 0
if ((jT809Package.Header.MsgLength - JT809Package.FixedByteLength) > 0)
{
try
{
// 5.2 是否加密
switch (jT809Package.Header.EncryptFlag)
{
case JT809Header_Encrypt.None:
// 5.3 处理消息体
jT809Package.Bodies = reader.ReadContent().ToArray();
break;
case JT809Header_Encrypt.Common:
// 5.4. 处理加密消息体
byte[] bodiesData = config.Encrypt.Decrypt(reader.ReadContent(), config.EncryptOptions, jT809Package.Header.EncryptKey);
jT809Package.Bodies = bodiesData;
break;
}
}
catch (Exception ex)
{
throw new JT809Exception(JT809ErrorCode.BodiesParseError, $"offset>{reader.ReadCurrentRemainContentLength()}", ex);
}
}
jT809Package.CRCCode = reader.CalculateCheckXorCode;
jT809Package.EndFlag = reader.ReadEnd();
return(jT809Package);
}
public JT809Package Deserialize(ref JT809MessagePackReader reader, IJT809Config config)
{
// 1. 验证校验码
if (!config.SkipCRCCode)
{
// 1.2. 验证校验码
if (!reader.CheckXorCodeVali)
{
throw new JT809Exception(JT809ErrorCode.CRC16CheckInvalid, $"{reader.CalculateCheckXorCode.ToString()}!={reader.RealCheckXorCode.ToString()}");
}
}
JT809Package jT809Package = new JT809Package();
// 2.读取起始头
jT809Package.BeginFlag = reader.ReadStart();
// 3.初始化消息头
try
{
//todo:JT809HeaderFormatter
//jT809Package.Header = JT809HeaderFormatter.Instance.Deserialize(ref reader, config);
}
catch (Exception ex)
{
throw new JT809Exception(JT809ErrorCode.HeaderParseError, $"offset>{reader.ReadCurrentRemainContentLength().ToString()}", ex);
}
// 5.数据体处理
// 5.1 判断是否有数据体（总长度-固定长度）> 0
if ((jT809Package.Header.MsgLength - JT809Package.FixedByteLength) > 0)
{
try
{
Type jT809BodiesImplType = config.BusinessTypeFactory.GetBodiesImplTypeByBusinessType(jT809Package.Header.BusinessType, jT809Package.Header.MsgGNSSCENTERID);
if (jT809BodiesImplType != null)
{
// 5.2 是否加密
switch (jT809Package.Header.EncryptFlag)
{
case JT809Header_Encrypt.None:
// 5.3 处理消息体
jT809Package.Bodies = JT809MessagePackFormatterResolverExtensions.JT809DynamicDeserialize(
config.GetMessagePackFormatterByType(jT809BodiesImplType),
ref reader, config);
break;
case JT809Header_Encrypt.Common:
// 5.4. 处理加密消息体
byte[] bodiesData = config.Encrypt.Decrypt(reader.ReadContent(), config.EncryptOptions, jT809Package.Header.EncryptKey);
JT809MessagePackReader bodiesReader = new JT809MessagePackReader(bodiesData);
jT809Package.Bodies = JT809MessagePackFormatterResolverExtensions.JT809DynamicDeserialize(
config.GetMessagePackFormatterByType(jT809BodiesImplType),
ref bodiesReader, config);
break;
}
}
}
catch (Exception ex)
{
throw new JT809Exception(JT809ErrorCode.BodiesParseError, $"offset>{reader.ReadCurrentRemainContentLength().ToString()}", ex);
}
}
jT809Package.CRCCode = reader.CalculateCheckXorCode;
jT809Package.EndFlag = reader.ReadEnd();
return(jT809Package);
}
public JT809Package Deserialize(ref JT809MessagePackReader reader, IJT809Config config)
{
// 1. 验证校验码
if (!config.SkipCRCCode)
{
// 1.2. 验证校验码
if (!reader.CheckXorCodeVali)
{
throw new JT809Exception(JT809ErrorCode.CRC16CheckInvalid, $"{reader.CalculateCheckXorCode}!={reader.RealCheckXorCode}");
}
}
JT809Package jT809Package = new JT809Package();
// 2.读取起始头
jT809Package.BeginFlag = reader.ReadStart();
// 3.初始化消息头
try
{
jT809Package.Header = config.GetMessagePackFormatter <JT809Header>().Deserialize(ref reader, config);
}
catch (Exception ex)
{
throw new JT809Exception(JT809ErrorCode.HeaderParseError, $"offset>{reader.ReadCurrentRemainContentLength()}", ex);
}
// 5.数据体处理
// 5.1 判断是否有数据体（总长度-固定长度）> 0
int fixedByteLength = config.Version == JT809Version.JTT2019 ? FixedByteLength_2019 : FixedByteLength;
if ((jT809Package.Header.MsgLength - fixedByteLength) > 0)
{
if (config.BusinessTypeFactory.TryGetValue(jT809Package.Header.BusinessType, config.Version, out object instance))
{
try
{
// 5.2 是否加密
switch (jT809Package.Header.EncryptFlag)
{
case JT809Header_Encrypt.None:
// 5.3 处理消息体
jT809Package.Bodies = JT809MessagePackFormatterResolverExtensions.JT809DynamicDeserialize(instance, ref reader, config);
break;
case JT809Header_Encrypt.Common:
// 5.4. 处理加密消息体
byte[] bodiesData = config.Encrypt.Decrypt(reader.ReadContent(), config.EncryptOptions, jT809Package.Header.EncryptKey);
JT809MessagePackReader bodiesReader = new JT809MessagePackReader(bodiesData);
jT809Package.Bodies = JT809MessagePackFormatterResolverExtensions.JT809DynamicDeserialize(instance, ref bodiesReader, config);
break;
}
}
catch (Exception ex)
{
throw new JT809Exception(JT809ErrorCode.BodiesParseError, $"offset>{reader.ReadCurrentRemainContentLength().ToString()}", ex);
}
}
}
jT809Package.CRCCode = reader.CalculateCheckXorCode;
jT809Package.EndFlag = reader.ReadEnd();
return(jT809Package);
}
public void Analyze(ref JT809MessagePackReader reader, Utf8JsonWriter writer, IJT809Config config)
{
JT809Package jT809Package = new JT809Package();
writer.WriteStartObject();
// 2.读取起始头
jT809Package.BeginFlag = reader.ReadStart();
writer.WriteNumber($"[{jT809Package.BeginFlag.ReadNumber()}]起始标识", jT809Package.BeginFlag);
// 3.初始化消息头
JT809Header jT809Header = new JT809Header();
writer.WriteStartObject("消息头");
try
{
jT809Header.MsgLength = reader.ReadUInt32();
writer.WriteNumber($"[{jT809Header.MsgLength.ReadNumber()}]数据长度", jT809Header.MsgLength);
jT809Header.MsgSN = reader.ReadUInt32();
writer.WriteNumber($"[{jT809Header.MsgSN.ReadNumber()}]报文序列号", jT809Header.MsgSN);
jT809Header.BusinessType = reader.ReadUInt16();
writer.WriteString($"[{jT809Header.BusinessType.ReadNumber()}]业务类型标识", ((JT809BusinessType)jT809Header.BusinessType).ToString());
jT809Header.MsgGNSSCENTERID = reader.ReadUInt32();
writer.WriteNumber($"[{jT809Header.MsgGNSSCENTERID.ReadNumber()}]下级平台接入码", jT809Header.MsgGNSSCENTERID);
var virtualHex = reader.ReadVirtualArray(JT809Header_Version.FixedByteLength);
jT809Header.Version = new JT809Header_Version(reader.ReadArray(JT809Header_Version.FixedByteLength));
writer.WriteString($"[{virtualHex.ToArray().ToHexString()}]协议版本号标识", jT809Header.Version.ToString());
jT809Header.EncryptFlag = (JT809Header_Encrypt)reader.ReadByte();
writer.WriteString($"[{ jT809Header.EncryptFlag.ToByteValue()}]报文加密标识位", jT809Header.EncryptFlag.ToString());
jT809Header.EncryptKey = reader.ReadUInt32();
writer.WriteNumber($"[{jT809Header.EncryptKey.ReadNumber()}]数据加密的密匙", jT809Header.EncryptKey);
if (config.Version == JT809Version.JTT2019)
{
virtualHex = reader.ReadVirtualArray(8);
jT809Header.Time = reader.ReadUTCDateTime();
writer.WriteString($"[{virtualHex.ToArray().ToHexString()}]发送消息时的系统UTC时间", jT809Header.Time);
}
}
catch (Exception ex)
{
writer.WriteString($"[{(int)JT809ErrorCode.HeaderParseError}]消息头异常", $"offset>{reader.ReadCurrentRemainContentLength()},异常消息：{ex.Message}");
}
writer.WriteEndObject();
writer.WriteStartObject("消息体");
// 5.数据体处理
// 5.1 判断是否有数据体（总长度-固定长度）> 0
int fixedByteLength = config.Version == JT809Version.JTT2019 ? FixedByteLength_2019 : FixedByteLength;
if ((jT809Header.MsgLength - fixedByteLength) > 0)
{
if (config.BusinessTypeFactory.TryGetValue(jT809Header.BusinessType, config.Version, out object instance))
{
try
{
// 5.2 是否加密
switch (jT809Header.EncryptFlag)
{
case JT809Header_Encrypt.None:
// 5.3 处理消息体
instance.Analyze(ref reader, writer, config);
break;
case JT809Header_Encrypt.Common:
// 5.4. 处理加密消息体
byte[] bodiesData = config.Encrypt.Decrypt(reader.ReadContent(), config.EncryptOptions, jT809Header.EncryptKey);
JT809MessagePackReader bodiesReader = new JT809MessagePackReader(bodiesData);
instance.Analyze(ref bodiesReader, writer, config);
break;
}
}
catch (Exception ex)
{
writer.WriteString($"[{(int)JT809ErrorCode.BodiesParseError}]消息体异常", $"offset>{reader.ReadCurrentRemainContentLength()},异常消息：{ex.Message}");
}
}
}
writer.WriteEndObject();
jT809Package.CRCCode = reader.ReadUInt16();
writer.WriteNumber($"[{jT809Package.CRCCode.ReadNumber()}]校验码", jT809Package.CRCCode);
// 1. 验证校验码
if (!config.SkipCRCCode)
{
// 1.2. 验证校验码
if (!reader.CheckXorCodeVali)
{
writer.WriteString($"[{(int)JT809ErrorCode.CRC16CheckInvalid}]校验码异常", $"{reader.CalculateCheckXorCode}!={reader.RealCheckXorCode}");
}
}
jT809Package.EndFlag = reader.ReadEnd();
writer.WriteNumber($"[{jT809Package.EndFlag.ReadNumber()}]结束标识", jT809Package.EndFlag);
writer.WriteEndObject();
}
