时间戳

首页 > 解决方案 > C# BinaryFormatter.Deserialize 失败并出现异常

c# - C# BinaryFormatter.Deserialize 失败并出现异常

问题描述

我尝试了 BinaryFormatter.Deserialize Method中的示例代码，当我在 Visual Studio 中调试时，结果符合预期。当我直接在调试文件夹中执行exe文件时，它会得到“解析完成前遇到流结束”异常。

这只发生在我将项目目标框架设置为“.NET Framework 4.8”或 4.7 版本时。如下所示： 在此处输入图像描述 错误信息： 在此处输入图像描述

更奇怪的是，只有在使用.net 4.7 和 4.8 版本时才会出现这种情况。如果我换成.net 4.0版本，这个问题就会消失，甚至切换回.net 4.7和4.8。它不会再发生了。

看起来“BinaryFormatter.Deserialize”的更高 .net 版本中缺少一些依赖项？.net 框架的错误？任何人都知道如何解决这个问题？

还为此问题录制视频： https ://www.screencast.com/t/nC38Sm3q3pVQ

代码如下：

using System;
using System.IO;
using System.Collections;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization;

public class App 
{
[STAThread]
static void Main() 
{
    Serialize();
    Deserialize();

    Console.WriteLine("Press any key to exit.");
    Console.ReadKey();
}

static void Serialize() 
{
    // Create a hashtable of values that will eventually be serialized.
    Hashtable addresses = new Hashtable();
    addresses.Add("Jeff", "123 Main Street, Redmond, WA 98052");
    addresses.Add("Fred", "987 Pine Road, Phila., PA 19116");
    addresses.Add("Mary", "PO Box 112233, Palo Alto, CA 94301");

    // To serialize the hashtable and its key/value pairs,  
    // you must first open a stream for writing. 
    // In this case, use a file stream.
    FileStream fs = new FileStream("DataFile.dat", FileMode.Create);

    // Construct a BinaryFormatter and use it to serialize the data to the stream.
    BinaryFormatter formatter = new BinaryFormatter();
    try 
    {
        formatter.Serialize(fs, addresses);
    }
    catch (SerializationException e) 
    {
        Console.WriteLine("Failed to serialize. Reason: " + e.Message);
        throw;
    }
    finally 
    {
        fs.Close();
    }
}


static void Deserialize() 
{
    // Declare the hashtable reference.
    Hashtable addresses  = null;

    // Open the file containing the data that you want to deserialize.
    FileStream fs = new FileStream("DataFile.dat", FileMode.Open);
    try 
    {
        BinaryFormatter formatter = new BinaryFormatter();

        // Deserialize the hashtable from the file and 
        // assign the reference to the local variable.
        addresses = (Hashtable) formatter.Deserialize(fs);
    }
    catch (SerializationException e) 
    {
        Console.WriteLine("Failed to deserialize. Reason: " + e.Message);
        throw;
    }
    finally 
    {
        fs.Close();
    }

    // To prove that the table deserialized correctly, 
    // display the key/value pairs.
    foreach (DictionaryEntry de in addresses) 
    {
        Console.WriteLine("{0} lives at {1}.", de.Key, de.Value);
    }
}
}

谢谢，

标签： c#serializationdeserialization

解决方案

这是我作为控制台应用程序运行的代码。唯一的区别是我添加了一个 console.readkey 以便我可以查看输出。这是 vs2019 中的 4.8，用于配置的 AnyCpu。正如我所说，它以调试模式运行，并且独立于文件夹。

using System;
using System.Collections;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;

namespace ConsoleApp1
{
 class Program
 {
    [STAThread]
    static void Main()
    {
        Serialize();
        Deserialize();

        Console.ReadKey();
    }

    static void Serialize()
    {
        // Create a hashtable of values that will eventually be serialized.
        Hashtable addresses = new Hashtable();
        addresses.Add("Jeff", "123 Main Street, Redmond, WA 98052");
        addresses.Add("Fred", "987 Pine Road, Phila., PA 19116");
        addresses.Add("Mary", "PO Box 112233, Palo Alto, CA 94301");

        // To serialize the hashtable and its key/value pairs,  
        // you must first open a stream for writing. 
        // In this case, use a file stream.
        FileStream fs = new FileStream("DataFile.dat", FileMode.Create);

        // Construct a BinaryFormatter and use it to serialize the data to the stream.
        BinaryFormatter formatter = new BinaryFormatter();
        try
        {
            formatter.Serialize(fs, addresses);
        }
        catch (SerializationException e)
        {
            Console.WriteLine("Failed to serialize. Reason: " + e.Message);
            throw;
        }
        finally
        {
            fs.Close();
        }
    }


    static void Deserialize()
    {
        // Declare the hashtable reference.
        Hashtable addresses = null;

        // Open the file containing the data that you want to deserialize.
        FileStream fs = new FileStream("DataFile.dat", FileMode.Open);
        try
        {
            BinaryFormatter formatter = new BinaryFormatter();

            // Deserialize the hashtable from the file and 
            // assign the reference to the local variable.
            addresses = (Hashtable)formatter.Deserialize(fs);
        }
        catch (SerializationException e)
        {
            Console.WriteLine("Failed to deserialize. Reason: " + e.Message);
            throw;
        }
        finally
        {
            fs.Close();
        }

        // To prove that the table deserialized correctly, 
        // display the key/value pairs.
        foreach (DictionaryEntry de in addresses)
        {
            Console.WriteLine("{0} lives at {1}.", de.Key, de.Value);
        }
    }
 }
}

推荐阅读