将ArrayPool对象提供给JsonOutputFormatter构造函数

Question

从.net RC2升级到RTM后,我发现需要为从ArrayPool派生的JsonOutputFormatter的构造函数提供参数.我如何获得这个对象？我正在手动创建JsonOutputFormatter,因为我需要配置ReferenceLoopHandling.

我能找到的其他相关信息是这样的:https: //github.com/aspnet/Mvc/issues/4562

    public IServiceProvider ConfigureServices(IServiceCollection services)
    {
        // Add framework services.
        services.AddMemoryCache();
        services.AddSession();
        services.AddMvc();
        var formatterSettings = JsonSerializerSettingsProvider.CreateSerializerSettings();
        formatterSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore;
        JsonOutputFormatter formatter = new JsonOutputFormatter(formatterSettings, ???);

        services.Configure<MvcOptions>(options =>
        {
            options.OutputFormatters.RemoveType<JsonOutputFormatter>();
            options.OutputFormatters.Insert(0, formatter);
        });

        //etc...
    }    

Answer 1

var formatter = new JsonOutputFormatter(formatterSettings, ArrayPool<Char>.Shared);

资源

在评论中:

JsonOutputFormatter在创建时需要ArrayPool,您可以传入ArrayPool.Shared.

我还注意到ArrayPool上有一个.Create()方法.

var formatter = new JsonOutputFormatter(formatterSettings, ArrayPool<Char>.Create());