设置JsonConvert.DefaultSettings ASP Net Core 2.0无法按预期工作 [英] Setting JsonConvert.DefaultSettings asp net core 2.0 not working as expected

问题描述

我在Startup.cs中有以下代码，希望它能覆盖默认的序列化选项.我希望它覆盖整个ASP Net Core 2.0项目中的每个序列化，但是动作返回值不正确，我认为此全局属性在Core 2.0中不起作用

I have following code inside Startup.cs and expecting it to override default serialization options. I want it to override every single serialization throughout my asp net core 2.0 project, but action return value that is not correct, I think this global property is not working in core 2.0

我把它写在了app.UseMvc()之前的Configure中

I have it written inside Configure exactly before app.UseMvc();

JsonConvert.DefaultSettings = () => new JsonSerializerSettings
            {
                Formatting = Formatting.Indented,
                TypeNameHandling = TypeNameHandling.Objects,
                ContractResolver = new CamelCasePropertyNamesContractResolver(),
                Converters = new List<JsonConverter> { new StringEnumConverter() }
            };

推荐答案

在ASP.NET Core中，当在Startup.ConfigureServices中的应用程序上连接服务时进行配置. AddMvc()扩展名返回的IMvcBuilder流利的AddJsonOptions(Action<MvcJsonOptions>)扩展名. MvcJsonOptions公开一个SerializerSettings属性，您可以在操作代码中对其进行配置.

In ASP.NET Core, this is configured when wiring up the services on the application in Startup.ConfigureServices. There is an fluent AddJsonOptions(Action<MvcJsonOptions>) extension to the IMvcBuilder returned by the AddMvc() extension. MvcJsonOptions exposes a SerializerSettings property which you can configure in your action code.

因此，它不是在注册MVC之前进行一次配置，而是作为MVC注册的一部分完成的.

So instead of configuring once before registering MVC, it's done as part of the MVC registration.

包含您的设置的示例:

services.AddMvc()
  .AddJsonOptions( options =>
  {
    options.SerializerSettings.Formatting = Formatting.Indented;
    options.SerializerSettings.TypeNameHandling = TypeNameHandling.Objects;
    options.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
    options.SerializerSettings.Converters.Add(new StringEnumConverter());
  });

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