C#开源的AOP框架--KingAOP基础

3 Login类

该类必须实现IDynamicMetaObjectProvider的GetMetaObject方法,同时在需要切面的方法上用属性[LoggingAspect]进行标注,LoggingAspect属性也就是我们上面定义的LoggingAspect切片处理类.

using System.Dynamic;
using System.Linq.Expressions;
using KingAOP;
namespace AOPDemo.Logging
{
 /// <summary>
 /// 登录逻辑处理,只需添加一个LoggingAspect即可实现日志功能,达到逻辑和通用处理的逻辑分离
 /// </summary>
 internal class Login : IDynamicMetaObjectProvider
 {
  //添加登录切面
  [LoggingAspect] 
  public void LoginValdate(User entity)
  {
   //只需进行业务逻辑处理,无需进行日志处理
   if (entity.Name == "jack" && entity.Pwd == "wang")
   {
    entity.State = "Logged";
   }
   else
   {
    entity.State = "Error";
   }
   

  }
  /// <summary>
  /// IDynamicMetaObjectProvider的实现
  /// </summary>
  /// <param name="parameter"></param>
  /// <returns></returns>
  public DynamicMetaObject GetMetaObject(Expression parameter)
  {
   //need for AOP weaving
   return new AspectWeaver(parameter, this);
  }
 }
}

//测试感觉KingAOP必须有一个dynamic才能切面
Logging.Login test = new Logging.Login();
dynamic entity = new Logging.User { Name = "Jon", ID = 99,Pwd="wang",State="",LoginTime=System.DateTime.Now};
test.LoginValdate(entity);