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c# - 如何在 Python 中反序列化序列化的 C# 二进制文件？

问题描述

我想反序列化在 Visual Studio 2017 中用 C# 制作的二进制文件。

一个程序（C#）序列化structs不同类型的arrays文件，另一个程序（C#）反序列化文件。我想知道如何在 Python 中做同样的工作。

// ClassTickStruct.dll
namespace ClassTickStruct
{
    [Serializable]
    public struct struct_tick
    {
        public uint[] arr_currentIndex;
        public string[] arr_currentType;
        public DateTime[] arr_currentTime;
 
        public struct_tick(byte size_index, byte size_type, byte size_time)
        {
            arr_currentIndex = new uint[size_index];
            arr_currentType = new string[size_type];
            arr_currentTime = new DateTime[size_time];
        }
    }
}

// How one program(C#) serializes structs
using (var fileStream = new FileStream(file.bin, FileMode.Append))
{
    var bFormatter = new BinaryFormatter();

    bFormatter.Serialize(fileStream, obj_struct);
}

// How the other program(C#) deserializes the file
List<struct_tick> list_read = new List<struct_tick>();
using (var fileStream = new FileStream("file.bin", FileMode.Open))
{
    var bFormatter = new BinaryFormatter();
    //bFormatter.Binder = new AllowAllAssemblyVersionsDeserializationBinder();

    while (fileStream.Position != fileStream.Length)
    {
        list_read.Add((struct_tick)bFormatter.Deserialize(fileStream));
    }
}

我提到了有没有办法将 C# 序列化对象读入 Python？并尝试了 DirtyLittleHelper 的代码，但出现错误：

    data = serializer.Deserialize(reader)
System.Runtime.Serialization.SerializationException: 'tickReceiver, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' Assembly can't be found
   location: System.Runtime.Serialization.Formatters.Binary.BinaryAssemblyInfo.GetAssembly()
   location: System.Runtime.Serialization.Formatters.Binary.ObjectReader.GetType(BinaryAssemblyInfo assemblyInfo, String name)
   location: System.Runtime.Serialization.Formatters.Binary.ObjectMap..ctor(String objectName, String[] memberNames, BinaryTypeEnum[] binaryTypeEnumA, Object[] typeInformationA, Int32[] memberAssemIds, ObjectReader objectReader, Int32 objectId, BinaryAssemblyInfo assemblyInfo, SizedArray assemIdToAssemblyTable)
   location: System.Runtime.Serialization.Formatters.Binary.__BinaryParser.ReadObjectWithMapTyped(BinaryObjectWithMapTyped record)
   location: System.Runtime.Serialization.Formatters.Binary.__BinaryParser.ReadObjectWithMapTyped(BinaryHeaderEnum binaryHeaderEnum)
   location: System.Runtime.Serialization.Formatters.Binary.__BinaryParser.Run()
   location: System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler handler, __BinaryParser serParser, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
   location: System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream, HeaderHandler handler, Boolean fCheck, Boolean isCrossAppDomain, IMethodCallMessage methodCallMessage)
   location: System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream serializationStream)

Assembly can't be found当 C# 程序不共享结构的 dll 时，我遇到了同样的错误。然后我只是制作了一个包含结构的类库（dll），并让程序引用它，它们可以正常工作。

# the whole Python code to deserialize the file
import clr
import System
#requires pythonnet installed -> pip install pythonnet 
clr.AddReference(r"C:\Users\null\Desktop\RECEIVER\ClassTickStruct.dll")

from System.Runtime.Serialization.Formatters.Binary import BinaryFormatter
from System.IO import FileStream,FileMode,FileAccess,FileShare

filepath = "file.bin"
serializer = BinaryFormatter()
reader = FileStream(filepath, FileMode.Open, FileAccess.Read)
data = serializer.Deserialize(reader)

我认为不同之处在于它(struct_tick)bFormatter.Deserialize(fileStream)在 C# 中，而它只是serializer.Deserialize(reader)在 Python 中。也许它需要对 dll 中的结构进行一些工作？

标签： c#pythonserializationdeserializationpython.net

解决方案

我想要做的实际上可以使用 protobuf。

// WRITE
using (var fileStream = new FileStream("file.bin", FileMode.Append))
{
    Serializer.Serialize(fileStream, OBJ_struct);
}

// READ
using (var fileStream = new FileStream("file.bin", FileMode.Open))
{
    struct_obj str = Serializer.Deserialize<struct_obj >(fileStream);

    for (int num=0;  num < str.arr_currentIndex.Length; num++)
    {
        listBox1.Items.Add(str.arr_currentIndex[num]);
    }

}

谢谢推荐protobuf的人！

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