public JT809_0x9300 Deserialize(ReadOnlySpan <byte> bytes, out int readSize) { int offset = 0; JT809_0x9300 jT809_0X9300 = new JT809_0x9300(); jT809_0X9300.SubBusinessType = (JT809SubBusinessType)JT809BinaryExtensions.ReadUInt16Little(bytes, ref offset); jT809_0X9300.DataLength = JT809BinaryExtensions.ReadUInt32Little(bytes, ref offset); //JT809.Protocol.Enums.JT809BusinessType 映射对应消息特性 JT809BodiesTypeAttribute jT809SubBodiesTypeAttribute = jT809_0X9300.SubBusinessType.GetAttribute <JT809BodiesTypeAttribute>(); if (jT809SubBodiesTypeAttribute == null) { throw new JT809Exception(JT809ErrorCode.GetAttributeError, $"JT809BodiesTypeAttribute Not Found>{jT809_0X9300.SubBusinessType.ToString()}"); } try { jT809_0X9300.SubBodies = JT809FormatterResolverExtensions.JT809DynamicDeserialize(JT809FormatterExtensions.GetFormatter(jT809SubBodiesTypeAttribute.JT809BodiesType), bytes.Slice(offset, (int)jT809_0X9300.DataLength), out readSize); } catch { throw new JT809Exception(JT809ErrorCode.SubBodiesParseError, $"SubBusinessType>{jT809_0X9300.SubBusinessType.ToString()}"); } readSize = offset; return(jT809_0X9300); }
public int Serialize(ref byte[] bytes, int offset, JT809_0x9300 value) { offset += JT809BinaryExtensions.WriteUInt16Little(bytes, offset, (ushort)value.SubBusinessType); //offset += JT809BinaryExtensions.WriteUInt32Little(memoryOwner, offset, value.DataLength); //JT809.Protocol.Enums.JT809BusinessType 映射对应消息特性 JT809BodiesTypeAttribute jT809SubBodiesTypeAttribute = value.SubBusinessType.GetAttribute <JT809BodiesTypeAttribute>(); if (jT809SubBodiesTypeAttribute == null) { throw new JT809Exception(JT809ErrorCode.GetAttributeError, $"JT809BodiesTypeAttribute Not Found>{value.SubBusinessType.ToString()}"); } try { // 先写入内容,然后在根据内容反写内容长度 offset = offset + 4; int contentOffset = JT809FormatterResolverExtensions.JT809DynamicSerialize(JT809FormatterExtensions.GetFormatter(jT809SubBodiesTypeAttribute.JT809BodiesType), ref bytes, offset, value.SubBodies); JT809BinaryExtensions.WriteUInt32Little(bytes, offset - 4, (uint)(contentOffset - offset)); offset = contentOffset; } catch { throw new JT809Exception(JT809ErrorCode.SubBodiesParseError, $"SubBusinessType>{value.SubBusinessType.ToString()}"); } return(offset); }
public int Serialize(ref byte[] bytes, int offset, JT809Package value) { // 1. 先序列化数据体,根据数据体的长度赋值给头部,在序列化头部。 int messageBodyOffset = 0; JT809BodiesTypeAttribute jT809BodiesTypeAttribute = value.Header.BusinessType.GetAttribute <JT809BodiesTypeAttribute>(); if (jT809BodiesTypeAttribute != null) { if (value.Bodies != null) { // 1.1 处理数据体 messageBodyOffset = JT809FormatterResolverExtensions.JT809DynamicSerialize(JT809FormatterExtensions.GetFormatter(jT809BodiesTypeAttribute.JT809BodiesType), ref bytes, messageBodyOffset, value.Bodies); } } byte[] messageBodyData = null; if (messageBodyOffset != 0) { messageBodyData = bytes.AsSpan(0, messageBodyOffset).ToArray(); // 1.2 数据加密 switch (value.Header.EncryptFlag) { case JT809Header_Encrypt.None: break; case JT809Header_Encrypt.Common: messageBodyData = JT809GlobalConfig.Instance.Encrypt.Encrypt(messageBodyData, value.Header.EncryptKey); break; } } // ------------------------------------开始组包 // 1.起始符 offset += JT809BinaryExtensions.WriteByteLittle(bytes, offset, value.BeginFlag); // 2.赋值头数据长度 if (messageBodyOffset != 0) { value.Header.MsgLength = (uint)(JT809Package.FixedByteLength + messageBodyData.Length); } else { value.Header.MsgLength = JT809Package.FixedByteLength; } // 2.1写入头部数据 offset = JT809FormatterExtensions.GetFormatter <JT809Header>().Serialize(ref bytes, offset, value.Header); if (messageBodyOffset != 0) { // 3. 写入数据体 Array.Copy(messageBodyData, 0, bytes, offset, messageBodyData.Length); offset += messageBodyData.Length; messageBodyData = null; } // 4.校验码 offset += JT809BinaryExtensions.WriteUInt16Little(bytes, offset, bytes.ToCRC16_CCITT(1, offset)); // 5.终止符 offset += JT809BinaryExtensions.WriteByteLittle(bytes, offset, value.EndFlag); // 6.转义 byte[] temp = JT809Escape(bytes.AsSpan(0, offset)); Array.Copy(temp, 0, bytes, 0, temp.Length); return(temp.Length); }
private void InitMap() { foreach (var item in Enum.GetNames(typeof(JT809SubBusinessType))) { JT809SubBusinessType subBusinessType = item.ToEnum <JT809SubBusinessType>(); if (!map.ContainsKey((ushort)subBusinessType)) { JT809BodiesTypeAttribute jT809BodiesTypeAttribute = subBusinessType.GetAttribute <JT809BodiesTypeAttribute>(); if (jT809BodiesTypeAttribute != null) { map.Add((ushort)subBusinessType, jT809BodiesTypeAttribute.JT809BodiesType); } } } }
public void Test1() { var types = Enum.GetNames(typeof(JT809SubBusinessType)); foreach (var item in types) { JT809SubBusinessType jT809SubBusinessType = item.ToEnum <JT809SubBusinessType>(); JT809BodiesTypeAttribute jT809SubBodiesTypeAttribute = jT809SubBusinessType.GetAttribute <JT809BodiesTypeAttribute>(); JT809SubBusinessTypeDescriptionAttribute jT809SubBusinessTypeDescriptionAttribute = jT809SubBusinessType.GetAttribute <JT809SubBusinessTypeDescriptionAttribute>(); if (jT809SubBusinessType == JT809SubBusinessType.None) { Assert.Null(jT809SubBodiesTypeAttribute); Assert.Null(jT809SubBusinessTypeDescriptionAttribute); continue; } Assert.NotNull(jT809SubBusinessTypeDescriptionAttribute.Code); Assert.NotNull(jT809SubBusinessTypeDescriptionAttribute.Name); } }
public void Test6() { JT809BodiesTypeAttribute jT809BodiesTypeAttribute = JT809BusinessType.接收车辆定位信息数量通知消息.GetAttribute <JT809BodiesTypeAttribute>(); JT809BodiesTypeAttribute jT809BodiesTypeAttribute1 = JT809BusinessType.发送车辆定位信息数据量通知消息_2019.GetAttribute <JT809BodiesTypeAttribute>(); }
public JT809Package Deserialize(ReadOnlySpan <byte> bytes, out int readSize) { int offset = 0; JT809Package jT809Package = new JT809Package(); // 转义还原——>验证校验码——>解析消息 // 1. 解码(转义还原) ReadOnlySpan <byte> buffer = JT809DeEscape(bytes); // 2. 验证校验码 // 2.1. 获取校验位索引 int checkIndex = buffer.Length - 3; // 2.2. 获取校验码 int crcCodeOffset = 0; jT809Package.CRCCode = JT809BinaryExtensions.ReadUInt16Little(buffer.Slice(checkIndex, 2), ref crcCodeOffset); if (!JT809GlobalConfig.Instance.SkipCRCCode) { // 2.3. 从消息头到校验码前一个字节 ushort checkCode = buffer.ToCRC16_CCITT(1, checkIndex); // 2.4. 验证校验码 if (jT809Package.CRCCode != checkCode) { throw new JT809Exception(JT809ErrorCode.CRC16CheckInvalid, $"{jT809Package.CRCCode.ToString()}!={checkCode.ToString()}"); } } jT809Package.BeginFlag = JT809BinaryExtensions.ReadByteLittle(buffer, ref offset); // 3.初始化消息头 try { jT809Package.Header = JT809FormatterExtensions.GetFormatter <JT809Header>().Deserialize(buffer.Slice(offset, JT809Header.FixedByteLength), out readSize); } catch (Exception ex) { throw new JT809Exception(JT809ErrorCode.HeaderParseError, $"offset>{offset.ToString()}", ex); } offset += readSize; // 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) { //JT809.Protocol.JT809Enums.JT809BusinessType 映射对应消息特性 JT809BodiesTypeAttribute jT809BodiesTypeAttribute = jT809Package.Header.BusinessType.GetAttribute <JT809BodiesTypeAttribute>(); if (jT809BodiesTypeAttribute != null) { try { // 5.2 是否加密 switch (jT809Package.Header.EncryptFlag) { case JT809Header_Encrypt.None: //5.3 处理消息体 jT809Package.Bodies = JT809FormatterResolverExtensions.JT809DynamicDeserialize(JT809FormatterExtensions.GetFormatter(jT809BodiesTypeAttribute.JT809BodiesType), buffer.Slice(offset, checkIndex - offset), out readSize); break; case JT809Header_Encrypt.Common: byte[] bodiesData = JT809GlobalConfig.Instance.Encrypt.Decrypt(buffer.Slice(offset, checkIndex - offset).ToArray(), jT809Package.Header.EncryptKey); jT809Package.Bodies = JT809FormatterResolverExtensions.JT809DynamicDeserialize(JT809FormatterExtensions.GetFormatter(jT809BodiesTypeAttribute.JT809BodiesType), bodiesData, out readSize); break; } } catch (Exception ex) { throw new JT809Exception(JT809ErrorCode.BodiesParseError, $"offset>{offset.ToString()}", ex); } } } jT809Package.EndFlag = buffer[buffer.Length - 1]; readSize = buffer.Length; return(jT809Package); }