问题描述
我目前正在考虑使用 .NET Core 2.0，以便我可以在多个平台上运行我的应用程序.
I am currently looking at using .NET Core 2.0 so that I can run my app on multiple platforms.
我需要做的一件事是获取传入的字符串并将其反序列化为一个对象.例如
One thing I need to do is take an incoming string and deseralise it into an object. e.g.
var resultingObject = JsonConvert.DeserializeObject<MyDataContract>(request);
在完整的 .NET 中，这将运行并返回我的对象.但是在 .NET Core 2.0 中我得到以下异常
In full .NET, this would run and return me my object. However in .NET Core 2.0 I get the following exception
Could not load file or assembly 'System.Security.Permissions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified.
at Newtonsoft.Json.Serialization.JsonTypeReflector.get_DynamicCodeGeneration()
at Newtonsoft.Json.Serialization.JsonTypeReflector.get_ReflectionDelegateFactory()
at Newtonsoft.Json.Serialization.DefaultContractResolver.GetDefaultCreator(Type createdType)
at Newtonsoft.Json.Serialization.DefaultContractResolver.InitializeContract(JsonContract contract)
at Newtonsoft.Json.Serialization.DefaultContractResolver.CreateObjectContract(Type objectType)
at Newtonsoft.Json.Serialization.DefaultContractResolver.CreateContract(Type objectType)
at Newtonsoft.Json.Serialization.DefaultContractResolver.ResolveContract(Type type)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)
at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonSerializerSettings settings)
经过一番阅读后，我在 StackOverflow 上发现了这个，这表明 .NET Core 中不允许这种操作 https://stackoverflow.com/a/38385774/1211743
After some reading around I found this on StackOverflow which suggests that this kind of operation is not permitted in .NET Core https://stackoverflow.com/a/38385774/1211743
有没有人有任何见解?
推荐答案
这是由于对 .NET Core 的工作原理缺乏了解.我打开了 csproj 并添加了对所需文件System.Security.Permissions"的引用并重新加载了项目.至此，nuget解决了.Json.NET 现在按预期工作.
This was due to a lack of understanding of how .NET Core works. I opened up the csproj and added a reference to the required file 'System.Security.Permissions' and reloaded the project. At this point, nuget resolved it. Json.NET now works as expected.
这篇关于调用 JsonConvert.DeserializeObject<T> 时缺少 System.Security.Permissions在 .NET Core 2.0 中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！