Question

我有三个班级：

[ProtoContract]
public class Message
{
    [ProtoMember(1)]
    public int MethodId { set; get; }
    [ProtoMember(2)]
    public CustomArgs Arguments { set; get; }
}

[ProtoContract]
public class CustomArgs
{
    [ProtoMember(1)]
    public int IntVal { set; get; }
    [ProtoMember(2)]
    public string StrVal { set; get; }
    [ProtoMember(3)]
    public CycleData Cd { set; get; }
}

[ProtoContract]
public class CycleData
{
[ProtoMember(1)]
public int Id { set; get; }
[ProtoMember(2, AsReference = true)]
public CycleData Owner { set; get; }}

因此，当我创建对象然后序列化和反序列化Arguments属性保持null但是orignal对象具有值。示例代码为：

static void Main(string[] args)
{
    CycleData cd = new CycleData()
    {
        Id = 5
    };
    cd.Owner = cd;

    CustomArgs a = new CustomArgs()
    {
        IntVal = 5,
        StrVal = "string",
        Cd = cd
    };

    Message oldMsg = new Message()
    {
        MethodId = 3,
        Arguments = a
    };

    Stream st = new MemoryStream();
    ProtoBuf.Serializer.Serialize(st, oldMsg);
    var newMsg = ProtoBuf.Serializer.Deserialize<Message>(st);

}

反序列化后newMsg.Arguments为空。我做错了什么？

Answer 1

你有一个简单的错误。序列化/写入memstream后，.Pointer将保留在流的末尾。在同一个流上使用后立即反序列化失败，因为在该点之后没有任何内容可读。只需重置它：

using (Stream st = new MemoryStream())
{ 
    ProtoBuf.Serializer.Serialize(st, oldMsg);
    st.Position = 0;          // point to start of stream
    var newMsg = ProtoBuf.Serializer.Deserialize<Message>(st);
}

我还将流放入使用块中进行处理。

protobuf不会严重反序列化对象

1 个答案: