.net Core 3.1里的api，使用JObject当做接收参数的教程

一、引用nuget

Microsoft.AspNetCore.Mvc.NewtonsoftJson

二、在StartUp里增加代码

        public void ConfigureServices(IServiceCollection services)
        {
            services.AddCors(options =>
            {
                options.AddPolicy("default", policy =>
                {
                    policy.WithOrigins("*")
                        .AllowAnyHeader()
                        .AllowAnyMethod();
                });
            });
            services.AddControllers().AddNewtonsoftJson(options =>
            {
                options.SerializerSettings.ContractResolver = new DefaultContractResolver(); });
            JwtSecurityTokenHandler.DefaultInboundClaimTypeMap.Clear();
            services.AddAuthorization();
        }

三、项目里使用

        [HttpPost]
        public ReturnResult AddUser([FromBody] JObject value)
        {
            var returnResult = new ReturnResult();
            returnResult = _userLogic.Add(value);
            return returnResult;
        }