Unable to find a constructor to use for type System.Security.Claims.Claim. A class should either have a default constructor

本文转载自查看原文 2019-02-12 16:19 835 C#

Newtonsoft.Json DeserializeObject 反序列化 IdentityServer4.Models Cliecnt

错误：

Newtonsoft.Json.JsonSerializationException:

Unable to find a constructor to use for type System.Security.Claims.Claim. A class should either have a default constructor, one constructor with arguments or a constructor marked with the JsonConstructor attribute. Path 'clients[0].Claims[0].Issuer', line 1, position 5373.

JsonConvert.DeserializeObject<T>(value);
//会抛出Newtonsoft.Json.JsonSerializationException异常

//解决方案：
JsonConvert.DeserializeObject<T>(value, new IdentityServer4.Stores.Serialization.ClaimConverter());

在IdentityServer4中，已经对System.Security.Claims.Claim做了处理。

使用IdentityServer4.Stores.Serialization.ClaimConverter()即可

在stackoverflow上有解决方案重载JsonConverter后写了ClaimConverter

详细请查看https://stackoverflow.com/questions/28155169/how-to-programmatically-choose-a-constructor-during-deserialization

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