记录自己使用.net6

首先依赖注入 懒得下载autofac了 直接用程序集进行批量注入

 private static WebApplicationBuilder builder;
        internal static void Load(WebApplicationBuilder web)
        {
            builder = web;
            builder.Services.Configure<ApiBehaviorOptions>(options => options.SuppressModelStateInvalidFilter = true);
             Assembly.Load("TestApplication").ExportedTypes.LoadImp();
            builder.Services.AddSingleton(typeof(ITestGren<>), typeof(TestGren<>));
        }
        private static void LoadImp(this IEnumerable<Type> type)
        {
           type= type.Where(d => d.IsClass&&!d.IsAbstract);
            foreach (var item in type)
            {   ///检查是不是泛型类
                if (item.GetGenericArguments().Length is 0) item.GetInterfaces().LoadInter(item);
            }
        }
        private static void LoadInter(this Type[] type,Type ImpType)
        {
            foreach (var item in type)
            {
               if (item.GetGenericArguments().Length is 0) builder.Services.AddSingleton(item,ImpType);
            }
        }

可惜泛型类不能直接注入 需要自己写，反正自己也不怎么写泛型类

然后我们的接口要验签就创建一个类来继承ValidationAttribute特性

 [CheckSgValidation(ErrorMessage ="签名错误")]
    public class TestModel
    {
        public string Sg { get; set; }
    }
    public class CsModel:TestModel
    {
        public int MyProperty { get; set; }
    }
    [AttributeUsage(AttributeTargets.Class )]
    public class CheckSgValidation: ValidationAttribute
    {
        private string SgName = "Sg";
        public CheckSgValidation(string sgName)
        {
            this.SgName = sgName;
        }
        public CheckSgValidation() { }
        public override bool IsValid(object? value)
        {
            StringBuilder sb = new StringBuilder();
            foreach (var item in value.GetType().GetProperties())
            {
                if (item.Name == SgName) continue;
                sb.Append(item.GetValue(value));
            }
            return sb.ToString() == value.GetType().GetProperty(SgName).GetValue(value).ToString();
        }
    }

我是用单独一个类来写上我们自定义的特性, 尝试过用表达式树进行验证的 可惜参数为object就不行 不知道怎么处理这个问题

这样用反射确实可以用