.Net學習之面向切面編程(AOP)

結合設計模式,經過代碼理解面向切面編程，

經過,結構型設計模式，裝飾器模式來實現AOP，代碼以下

/// <summary>
    /// 裝飾器模式實現靜態代理 /// AOP 在方法先後增長自定義的方法 /// </summary>
    public class DecoratorAOP { public static void Show() { User user = new User() { Name = "Eleven", Password = "123123123123" }; //直接調用
            IUserProcessor processor = new UserProcessor(); processor.RegUser(user); Console.WriteLine("***************"); //經過裝飾器模式,在方法執行先後添加功能
            processor = new UserProcessorDecorator(processor); processor.RegUser(user); } public interface IUserProcessor { void RegUser(User user); } public class UserProcessor : IUserProcessor { public void RegUser(User user) { Console.WriteLine("用戶已註冊。Name:{0},PassWord:{1}", user.Name, user.Password); } } /// <summary>
        /// 裝飾器的模式去提供一個AOP功能 /// </summary>
        public class UserProcessorDecorator : IUserProcessor { private IUserProcessor _UserProcessor { get; set; } public UserProcessorDecorator(IUserProcessor userprocessor) { this._UserProcessor = userprocessor; } public void RegUser(User user) { BeforeProceed(user); this._UserProcessor.RegUser(user); AfterProceed(user); } /// <summary>
            /// 業務邏輯以前 /// </summary>
            /// <param name="user"></param>
            private void BeforeProceed(User user) { Console.WriteLine("方法執行前"); } /// <summary>
            /// 業務邏輯以後 /// </summary>
            /// <param name="user"></param>
            private void AfterProceed(User user) { Console.WriteLine("方法執行後"); } } }

 

經過,結構型設計模式，代理模式來實現AOP，代碼以下

/// <summary>
    /// 代理模式實現靜態代理 /// AOP 在方法先後增長自定義的方法 /// </summary>
    public class ProxyAOP { public static void Show() { User user = new User() { Name = "Eleven", Password = "123123123123" }; IUserProcessor processor = new UserProcessor(); //直接調用方法
 processor.RegUser(user); Console.WriteLine("***************"); //實現AOP,在執行先後加其餘方法
            processor = new ProxyUserProcessor(); processor.RegUser(user); } public interface IUserProcessor { void RegUser(User user); } public class UserProcessor : IUserProcessor { public void RegUser(User user) { Console.WriteLine("用戶已註冊。Name:{0},PassWord:{1}", user.Name, user.Password); } } /// <summary>
        /// 代理模式去提供一個AOP功能 /// </summary>
        public class ProxyUserProcessor : IUserProcessor { private IUserProcessor _UserProcessor = new UserProcessor(); public void RegUser(User user) { BeforeProceed(user); this._UserProcessor.RegUser(user); AfterProceed(user); } /// <summary>
            /// 業務邏輯以前 /// </summary>
            /// <param name="user"></param>
            private void BeforeProceed(User user) { Console.WriteLine("方法執行前"); } /// <summary>
            /// 業務邏輯以後 /// </summary>
            /// <param name="user"></param>
            private void AfterProceed(User user) { Console.WriteLine("方法執行後"); } } }

 

 

經過Unity實現AOP,配置太複雜就不貼了。。。就一個實現類的代碼,能夠用於添加方法的日誌,異常處理,不用修改方法自己,不用挨個方法+Log.Info()了,經過Unity(IOC)建立的對象都能用，代碼以下

public class LogBeforeBehavior : IInterceptionBehavior { public IEnumerable<Type> GetRequiredInterfaces() { return Type.EmptyTypes; } public IMethodReturn Invoke(IMethodInvocation input, GetNextInterceptionBehaviorDelegate getNext) { Console.WriteLine("LogBeforeBehavior"); Console.WriteLine(input.MethodBase.Name); foreach (var item in input.Inputs) { Console.WriteLine(Newtonsoft.Json.JsonConvert.SerializeObject(item)); //反射&序列化獲取更多信息
 } return getNext().Invoke(input, getNext);//  } public bool WillExecute { get { return true; } } }

 再加一個Unity建立對象和調用的代碼吧,NuGet添加Unity的引用

public class UnityConfigAOP { public static void Show() { User user = new User() { Name = "Eleven", Password = "12345678934534643" }; //這個是代碼塊,好神奇的呦
 { //配置UnityContainer
                IUnityContainer container = new UnityContainer(); ExeConfigurationFileMap fileMap = new ExeConfigurationFileMap(); fileMap.ExeConfigFilename = Path.Combine(AppDomain.CurrentDomain.BaseDirectory + "CfgFiles\\Unity.Config"); Configuration configuration = ConfigurationManager.OpenMappedExeConfiguration(fileMap, ConfigurationUserLevel.None); UnityConfigurationSection configSection = (UnityConfigurationSection)configuration.GetSection(UnityConfigurationSection.SectionName); configSection.Configure(container, "aopContainer"); IUserProcessor processor = container.Resolve<IUserProcessor>(); processor.RegUser(user); } } }