在API层加了全局配置不生效 需要在 APPlication层增加不适用ABP的类
public class ABPTemplateApiModule : AbpModule
    {
        public override void ConfigureServices(ServiceConfigurationContext context)
        {
            
            //Json格式化全局处理
            context.Services.Configure<MvcNewtonsoftJsonOptions>(options =>
            {
                options.SerializerSettings.ContractResolver = new Newtonsoft.Json.Serialization.CamelCasePropertyNamesContractResolver();//.DefaultContractResolver();
                options.SerializerSettings.Converters.Add(new DateTimeJsonConverter("yyyy-MM-dd HH:mm:ss"));
                options.SerializerSettings.Converters.Add(new LongJsonConverter());
            });
解决方案如下 增加代码：

PreConfigure<AbpJsonOptions>(options =>
{
options.UseHybridSerializer = false;
});

}