当尝试使用由反射加载的proto序列化程序序列化层次结构类型时,它似乎有一些奇怪的行为并且似乎无法正常工作。
这是代码:
[ProtoContract]
[ProtoInclude(10, typeof(Derived))]
class Base
{
[ProtoMember(1)]
public string BaseFirstProperty { get; set; }
[ProtoMember(2)]
public string BaseSecProperty { get; set; }
}
[ProtoContract]
class Derived : Base
{
[ProtoMember(1)]
public string DerivedFirstProperty { get; set; }
}
static void Main(string[] args)
{
var assembly = Assembly.LoadFile(@"c:\protobuf-net.dll");
var derived = new Derived()
{
BaseFirstProperty = "BaseFirst",
BaseSecProperty = "BaseSec",
DerivedFirstProperty = "DerivedFirst"
};
var reflectionSerializer = assembly.GetType("ProtoBuf.Serializer");
var getTypeSerializer = typeof(Serializer);
var reflectionMethods = reflectionSerializer.GetMethods(BindingFlags.Static | BindingFlags.Public);
var reflectionGenericMethodInfo = reflectionMethods.First<MethodInfo>(method => method.Name == "SerializeWithLengthPrefix");
var reflectionSpecificMethodInfo = reflectionGenericMethodInfo.MakeGenericMethod(new Type[] { derived.GetType() });
var getTypeMethods = getTypeSerializer.GetMethods(BindingFlags.Static | BindingFlags.Public);
var getTypeGenericMethodInfo = getTypeMethods.First<MethodInfo>(method => method.Name == "SerializeWithLengthPrefix");
var getTypeSpecificMethodInfo = getTypeGenericMethodInfo.MakeGenericMethod(new Type[] { derived.GetType() });
var reflectionStream = new MemoryStream();
var getTypeStream = new MemoryStream();
reflectionSpecificMethodInfo.Invoke(null, new object[] { reflectionStream, derived, PrefixStyle.Base128 });
getTypeSpecificMethodInfo.Invoke(null, new object[] { getTypeStream, derived, PrefixStyle.Base128 });
Console.WriteLine(reflectionStream.ToArray().Length); // Prints out 15
Console.WriteLine(getTypeStream.ToArray().Length); // Prints out 37
}
据我所知,它的工作方式应该相同......我做错了什么? 请注意,我使用的是Proto-buf 2.0.0.431。 谢谢,
答案 0 :(得分:0)
订购错误
[ProtoContract]
[ProtoInclude(10, typeof(Derived))]
class Base
{
[ProtoMember(1)]
public string BaseFirstProperty { get; set; }
[ProtoMember(2)]
public string BaseSecProperty { get; set; }
}
[ProtoContract]
class Derived : Base
{
[ProtoMember(3)]
public string DerivedFirstProperty { get; set; }
}
答案 1 :(得分:0)
确定;我通过当前的中继代码运行它;我最初得到一个错误处理ImplicitFields
,但我已在本地更正了。然后运行它,我得到:
37
37
这告诉我,如果最后一个(625-431)= 194提交,问题已经解决了。别问我哪一个!我建议您尝试使用r625,看看情况如何,我还没有部署,但protobuf-net项目应该构建,或者让我知道您是否希望我通过电子邮件发送给您。
另外:您可能会发现使用非通用API更容易,而不是MakeGenericMethod
;那是ProtoBuf.Serializer.NonGeneric
或ProtoBuf.RuntimeTypeModel.Default
(基本上,通用 Serializer
API现在只转发到非通用 API,因为v2核心删除了所有通用代码;除了方便之外,使用通用API绝对没有优势 - 使用反射时没有这种优势。