解析完成之前遇到 Stream End？

Question

我正在尝试反序列化流，但总是收到此错误“解析完成之前遇到流结束”？

这是代码：

        //Some code here
        BinaryFormatter b = new BinaryFormatter();
        return (myObject)b.Deserialize(s);//s---> is a Stream object that has been fill up with data some line over here

有人有想法吗？

Answer 1

尝试将流的位置设置为 0，并且不使用对象而是使用对象类型。

        BinaryFormatter b = new BinaryFormatter();
        s.Position = 0;
        return (YourObjectType)b.Deserialize(s);

Answer 2

确保序列化已完成，并且序列化类型与反序列化类型匹配（即，如果您使用 BinaryFormatter 进行反序列化，请确保使用 BinaryFormatter 进行序列化）。另外，请确保您序列化的流确实完成了序列化，使用 Stream.Flush() 或类似的方法。

Answer 3

我抛出了同样的异常，直到我将 [Serialized] 标签添加到我正在序列化的类中:)

然后一切都很完美。

Answer 4

就我而言，我使用：

stream.Seek(0, SeekOrigin.Begin);

在我序列化流之后，在我反序列化流之前，流工作的魅力。希望这有帮助！

Answer 5

我花了 5 个小时，遇到了流结束错误并丢失了数据（GzipStream 中没有明显的功能：您应该仅在刷新 GzipStream 之后才使用底层流）。

工作代码的完整示例：

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

namespace ConsoleApp3
{
    class Program
    {
        static void Main(string[] args)
        {
            string large = LargeJsonContent.GetBigObject();
            string base64;

            using (var readStream = new MemoryStream())
            using (var writeStream = new MemoryStream())
            {
                using (GZipStream compressor = new GZipStream(writeStream, CompressionMode.Compress, true)) //pay attention to leaveOpen = true
                {
                    var formatter = new BinaryFormatter();
                    formatter.Serialize(readStream, large);

                    Console.WriteLine($"After binary serialization of JsonString: {readStream.Length} bytes");

                    readStream.Position = 0;
                    readStream.CopyTo(compressor);
                }

                Console.WriteLine($"Compressed stream size: {writeStream.Length} bytes");

                writeStream.Position = 0;
                byte[] writeBytes = writeStream.ToArray();
                base64 = Convert.ToBase64String(writeBytes);
            }


            ////

            using (var stream = new MemoryStream())
            {
                var formatter = new BinaryFormatter();
                formatter.Serialize(stream, base64);
                Console.WriteLine($"Size of base64: {stream.Length} bytes");
            }

            Console.WriteLine("---------------------");
            ////

            string large2;

            var bytes = Convert.FromBase64String(base64);
            using (var readStream = new MemoryStream())
            {
                readStream.Write(bytes, 0, bytes.Length);
                readStream.Position = 0;
                Console.WriteLine($"Compressed stream size: {readStream.Length} bytes");
                using (var writeStream = new MemoryStream())
                {
                    using (GZipStream decompressor = new GZipStream(readStream, CompressionMode.Decompress, true)) //pay attention to leaveOpen = true
                    {
                        decompressor.CopyTo(writeStream);
                        writeStream.Position = 0;
                    }

                    var formatter = new BinaryFormatter();
                    large2 = (string)formatter.Deserialize(writeStream);
                }
            }

            Console.WriteLine(large == large2);
            Console.WriteLine($"large:{large.Length} | large2:{large2.Length}");
        }
    }
}

Answer 6

如果您没有执行以下操作，请检查您的发件人代码

NetworkStream strm = client.GetStream(); // the stream
formatter.Serialize(strm, status); // the serialization process
strm.Close();// Remove this code, this was the culprit in my case

Answer 7

您创建的类必须具有[Serialized]。

Answer 8

我也有同样的问题。如果我正在序列化的类中有其他自定义对象，我必须确保这些自定义对象也是[可序列化]的，以使二进制格式化程序序列化/反序列化工作时不会出现此错误。