public class Startup
{
        private readonly IConfigurationRoot _appConfiguration;

        public Startup(IHostingEnvironment env)
        {
            _appConfiguration = env.GetAppConfiguration();
        }

        public IServiceProvider ConfigureServices(IServiceCollection services)
        {
            // MVC
            services.AddMvc()
　　　　　　  .AddJsonOptions(options =>
            {
                //配置tojson格式配置 DefaultContractResolver 為和后臺屬性名保持一致（即：后臺屬性名為OrderName，前端js獲得屬性名也為OrderName）
                options.SerializerSettings.ContractResolver = new DefaultContractResolver();
                //修改為CamelCasePropertyNamesContractResolver，為js的駝峰格式，即abp默認格式（即：后臺屬性名為OrderName，前端js獲得屬性名為orderName）
                //options.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
            });
　　　　  }
}

public class MyPropertyNamesContractResolver : DefaultContractResolver
{
        protected override string ResolvePropertyName(string propertyName)
        {
            //屬性名全部返回小寫
            return propertyName .ToLower();
        }
}

services.AddMvc()
.AddJsonOptions(options =>
{
     //配置tojson格式替換為自定義格式 MyPropertyNamesContractResolver （即：后臺屬性名為OrderName，前端js獲得屬性名為ordername）
     options.SerializerSettings.ContractResolver = new MyPropertyNamesContractResolver();
     options.SerializerSettings.DateFormatString = "yyyy'-'MM'-'dd' 'HH':'mm':'ss"; //返回給前臺的JSON數(shù)據(jù)中時間格式去掉T
});