C# net5 netcore api Json序列化避免循环引用

1、安装库

install-package Microsoft.AspNetCore.Mvc.NewtonsoftJson

这个库很重要，默认是没有安装的。需要安装

2、配置

services.AddControllersWithViews()

    .AddNewtonsoftJson(options=>    {

        options.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver(); //序列化时key为驼峰样式        options.SerializerSettings.DateTimeZoneHandling = DateTimeZoneHandling.Local;

        options.SerializerSettings.DateFormatString = "yyyy-MM-dd HH:mm:ss";

        options.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;//忽略循环引用    });