C# Autofac 的 BeanFactory

using Autofac;
using Microsoft.Practices.ServiceLocation;

namespace Core.Common
{
    /// <summary>
    /// 获取被Autofac注入的实例BeanFactory
    /// </summary>
    public class BeanFactory
    {
        /// <summary>
        /// 获取Bean
        /// </summary>
        /// <typeparam name="T">获取的实例类型</typeparam>
        /// <returns>获取的实例</returns>
        public static T GetBean<T>()
        {
            try
            {
                if (System.Web.HttpContext.Current != null)
                {
                    ILifetimeScope scope = System.Web.HttpContext.Current.Items[typeof(ILifetimeScope)] as ILifetimeScope;
                    if (scope != null)
                    {
                        return scope.Resolve<T>();
                    }
                }
            }
            catch
            {
            }

            return ServiceLocator.Current.GetInstance<T>();
        }

        /// <summary>
        /// 获取Bean
        /// </summary>
        /// <param name="type"></param>
        /// <returns></returns>
        public static object GetBean(System.Type type) 
        {
            try
            {
                if (System.Web.HttpContext.Current != null)
                {
                    ILifetimeScope scope = System.Web.HttpContext.Current.Items[typeof(ILifetimeScope)] as ILifetimeScope;
                    if (scope != null)
                    {
                        return scope.Resolve(type);
                    }
                }
            }
            catch
            {
            }

            return ServiceLocator.Current.GetInstance (type) ;
        }
    }
}