asp.net core 批量依赖注入服务

看园子里netcore的文章都是简单的注入几个服务的例子,在项目中肯定不会一行一行的写注册服务的代码，参考网上，找到一些解决方案，根据自己实际需求进行更改，特记录下来。

 

先创建一个 Startup.cs 扩展类，对IServiceCollection进行扩展

 public static class IServiceCollectionExtenions
    {
        /// <summary>
        /// 获取程序集中的类
        /// </summary>
        /// <param name="assemblyName">程序集名</param>
        /// <returns></returns>
        private static Dictionary<Type, Type> GetClassName(string assemblyName)
        {
            var result = new Dictionary<Type, Type>();
            if (!string.IsNullOrWhiteSpace(assemblyName))
            {
                //排除程序程序集中的接口、私有类、抽象类
                Assembly assembly = Assembly.Load(assemblyName);
                var typeList = assembly.GetTypes().Where(t => !t.IsInterface && !t.IsSealed && !t.IsAbstract).ToList();
                //历遍程序集中的类
                foreach (var item in typeList)
                {
                    //查找当前类继承且包含当前类名的接口
                    var interfaceType = item.GetInterfaces().Where(o => o.Name.Contains(item.Name)).FirstOrDefault();
                    if (interfaceType != null)
                    {
                        //把当前类和继承接口加入Dictionary
                        result.Add(item, interfaceType);
                    }
                }
            }
            return result;
        }
        /// <summary>
        /// 批量注册
        /// </summary>
        /// <param name="services"></param>
        /// <param name="assemblyName">程序集名</param>
        /// <param name="lifetime">服务生命周期</param>
        public static void BatchRegisterService(this IServiceCollection services, string assemblyName, ServiceLifetime lifetime = ServiceLifetime.Scoped)
        {
            foreach (var item in GetClassName(assemblyName))
            {
                //根据生命周期注册
                switch (lifetime)
                {
                    case ServiceLifetime.Scoped:
                        services.AddScoped(item.Value, item.Key);
                        break;
                    case ServiceLifetime.Singleton:
                        services.AddSingleton(item.Value, item.Key);
                        break;
                    case ServiceLifetime.Transient:
                        services.AddTransient(item.Value, item.Key);
                        break;
                }
            }
        }
    } 

然后在 Startup.cs 中服务注册

  public void ConfigureServices(IServiceCollection services)
  {
        services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
        #region 依赖注册
        //泛型注册
        services.AddScoped(typeof(IRepository<>), typeof(Repository<>));
        services.AddScoped<IRepositoryFactory, RepositoryFactory>();
        //按程序集名称批量注册
        services.BatchRegisterService("Com.Service");
        #endregion
  }

 经测试 ，使用扩展批量注册的方式注册的服务类正常工作