通过nuget重新安装newtonsoft包不适合我。 我必须手动调用JsonConvert。反序列化对象以绕过此问题

我改变了

HttpResponseMessage response = await client.GetAsync(url));
response.EnsureSuccessStatusCode();
MyObject data = await response.Content.ReadAsAsync<MyObject>();

For

HttpResponseMessage response = await client.GetAsync(url));
response.EnsureSuccessStatusCode();
string jsonStr = await response.Content.ReadAsStringAsync();
MyObject data = JsonConvert.DeserializeObject<MyObject>(jsonStr);

我也有同样的问题，当我试图创建MassTransit队列时，我得到了异常:

"Exception: System.TypeInitializationException: The type initializer for 'MassTransit.Serialization.JsonMessageSerializer' threw an exception. ---> System.IO.FileLoadException: Could not load file or assembly 'Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)"

对我有效的解决方案(在花了几天时间恢复了几次提交后):

We had a windows service solution that has .Service project and .XUnitTests project. Both of them were using a common nuget that has dependency on Newtonsoft.Json.dll. There was no explicit reference to Newtonsoft.Json nuget package in both projects (but we were using 'using Newtonsoft.Json;' namespace in our classes), so the common nuget was using version 9 of Newtonsoft.Json by default. As soon as I installed the Newtonsoft.Json nuget in both .Service and .XUnitTests projects, the common nuget package started using the latest v12 Newtonsoft and that fixed my issue.

如果能节省大家宝贵的时间，就贴在这里吧。

对于一个最简单的解决方案，你可以设置你的项目文件自动生成绑定重定向:

<PropertyGroup>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
</PropertyGroup>

https://learn.microsoft.com/en-us/dotnet/framework/configure-apps/how-to-enable-and-disable-automatic-binding-redirection

将正确的版本部署到CI机器

这是在告诉你，程序集加载器找到了一个不同版本的Newtonsoft。Json程序集，它与您在项目中创建的引用不匹配。要正确加载程序集，必须将程序集与已编译的代码并排部署，或者在目标计算机(即GAC)中安装程序集的正确版本。

替代方案:确保配置在正确的文件中

如果要保留当前解决方案，并加载具有不同版本的程序集，请确保您发布的配置位于正确的.config文件中。请记住，没有xpto.dll。config，应用程序加载的DLL总是使用运行应用程序的配置文件。

致所有使用牛顿软体有问题的人。Json v4.5版本尝试在web中使用这个。Config或app.config:

<runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
       <dependentAssembly>
           <assemblyIdentity name="Newtonsoft.Json"
               publicKeyToken="30AD4FE6B2A6AEED" culture="neutral"/>
           <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0"/>
       </dependentAssembly>
    </assemblyBinding>
</runtime>

重要提示:检查配置文件的配置标记是否没有命名空间属性(如https://stackoverflow.com/a/12011221/150370中建议的那样)。否则，assemblyBinding标记将被忽略。

你可以从引用中的属性中找到你的库的安装版本。对于我的情况，我安装了8.0.0.0。错误提示无法加载文件或程序集'Newtonsoft。Json，版本=6.0.0.0，文化=中性，PublicKeyToken=30ad4fe6b2a6aeed'或其依赖项之一。

所以我必须在web.config中手动添加以下内容

  <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" />
        <bindingRedirect oldVersion="6.0.0.0-8.0.0.0" newVersion="8.0.0.0" />
      </dependentAssembly>