论坛 › .net › C#的AOP（最经典实现）

飘柔 发表于 2024-4-11 15:53:17

C#的AOP（最经典实现）

(适用于.NET/.NET Core/.NET Framework)
【目录】
0.前言
1.第一个AOP程序
2.Aspect横切面编程
3.一个横切面程序拦截多个主程序
4.多个横切面程序拦截一个主程序
5.AOP的泛型处理（扩充）
6.AOP的异步处理（扩充）
7.优势总结
8.展望


0.前言
AOP（Aspect Oriented Programming）是“面向横切面编程”，主要是用来对程序/模块进行解耦。怎么理解？？
我们可以把一般的编程理解为“纵向编程”(主程序)，比如如下的一个示例代码：
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public string GetInfo(int i)
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    string s = "";

<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    if (i == 1)
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp><?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>s = "A";
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    else if (i == 2)
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp><?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>s = "B";
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    else if (i == 3)
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp><?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>s = "C";
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    else
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp><?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>s = "Z";

<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    return s;
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}试想一下，上述软件实际使用后，

[*]如果条件变量i有更多的判断值，我们是不是要在GetInfo()方法内部修改代码+重新编译？
[*]如果后续需要加个日志记录功能，我们是不是也要在GetInfo()方法内部加上日志函数+重新编译？
[*]如果...
[*]更多如果...
为了避免上述的这些麻烦并增加软件的灵活性，“横向编程”，也就是AOP被创造了出来，它就像是“横切一刀”，把相关功能塞进了主程序。
 
现行AOP的实现，主要是通过拦截方法(即拦截主程序)，并修改其参数+返回值来完成。
网上有很多相关方案，比如：特性注释拦截、动态代码生成、派遣代理模式、等。但这些方案要么实现的很复杂、要么耦合度没完全切断、逻辑有变化时还是需要修改代码重新编译。均不够理想。
而今天要隆重登场的主角-DeveloperSharp平台中的AOP技术，则提供了一种简便、快捷、彻底解耦的AOP实现。使用它，在程序逻辑有变化时，你只需要修改配置文件就行，而不再需要对主程序进行一丁丁点的代码修改！！
1.第一个AOP程序
制作一个AOP程序需要四个步骤：
（1）制作主程序
（2）制作横切面程序
（3）制作配置文件，让横切面程序拦截主程序
（4）调用主程序
下面，我们一步一步来实现上述四个步骤。
【第一步】：制作主程序
我们在Visual Studio中新建一个名为“School.Logic”的类库工程，并在该工程中新建一个名为PersonManage的类，该类中有一个名为GetInfo1的方法，代码如下：
//从NuGet引用DeveloperSharp包
using DeveloperSharp.Structure.Model;

namespace School.Logic
{
    //主程序必须继承自LogicLayer类
    public class PersonManage : LogicLayer
    {
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public string GetInfo1(string Name, int Num)
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    return $"共有{Name}{Num}人";
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}
    }
}以上，编写了一个非常简单的主程序。
 
【第二步】：制作横切面程序
我们再在Visual Studio中新建一个名为“School.Aspect”的类库工程，并在该工程中新建一个名为Interceptor1的类，代码如下：
//从NuGet引用DeveloperSharp包
using DeveloperSharp.Structure.Model.Aspect;

namespace School.Aspect
{
    //横切面程序必须继承自AspectModel类
    public class Interceptor1 : AspectModel
    {
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>//PreProcess方法先于主程序执行
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public override void PreProcess(object sender, AspectEventArgs e)
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    //把主程序的两个参数值改掉
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    e.MethodInfo.ParameterValues = "老师";
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    e.MethodInfo.ParameterValues = 20;
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}

<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>//PostProcess方法后于主程序执行
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public override void PostProcess(object sender, AspectEventArgs e)
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}
    }
} 以上，编写了一个横切面程序。它的主要功能是把主程序方法的两个参数值给改掉。
AspectModel基类中的PreProcess方法会在主程序方法执行之前被执行，而PostProcess方法会在主程序方法执行之后被执行。它两就是AOP横向拦截的核心要素。它两均需要被override重写覆盖掉。
 
【第三步】：制作配置文件，让横切面程序拦截主程序
若是在.Net Core环境下，我们创建一个名为DeveloperSharp.json的配置文件，设置让Interceptor1拦截PersonManage中的GetInfo1方法。文件内容如下：
{
"DeveloperSharp":
{
   "AspectObject":
   [
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp> {
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   "name":"School.Aspect.Interceptor1",//横切面拦截器类
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   "scope":"School.Logic.PersonManage",//被拦截的主程序类
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   "method":"GetInfo1"<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp><?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   //被拦截的方法
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp> }
   ]
}
}若是在.Net Framework环境下，我们创建一个名为DeveloperSharp.xml的配置文件，设置让Interceptor1拦截PersonManage中的GetInfo1方法。文件内容如下：
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>注意：以上配置中所有的类名，都要用完全限定名。
 
【第四步】：调用主程序
最后，我们再在Visual Studio中创建一个控制台工程，让它来调用主程序中的GetInfo1方法，代码如下：
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>//需要引用School.Aspect、School.Logic、DeveloperSharp三项<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>static void Main(string[] args)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    var pm = new School.Logic.PersonManage();<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    //要用这种形式调用主程序中的方法，AOP功能才会生效<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    var str = pm.InvokeMethod("GetInfo1", "学生", 200);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    Console.WriteLine(str);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    Console.ReadLine();<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}附注：有人会觉得上述InvokeMethod这种调用方法不够优雅，但事实上ASP.NET Web Api也是被类似InvokeMethod这种方式包裹调用才实现了各种Filter拦截器的拦截（本质也是AOP），只不过它的这个InvokeMethod动作是在.NET自身的CLR管道运行时中进行的。而且，那些Filter拦截器还只能用于ASP.NET Web Api环境，而不能像本方案这样用于一般程序。

现在，为了让前面第三步创建的配置文件生效，我们此时还需要在此主调项目中对它进行链接：
若是在.Net Core环境下，我们只需要把DeveloperSharp.json文件放到程序执行目录中（即bin目录下与dll、exe等文件的同一目录中，放错了位置会报错）（注意：有些.Net Core版本在Visual Studio“调试”时，不会在bin目录下生成全部的dll、exe，此时需要把此配置文件放在应用程序的“根目录”下）。
若是在.Net Framework环境下，我们需要在工程配置文件App.config/Web.config中添加appSettings节点，节点内容如下：
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>此处需要设置为配置文件的“绝对路径”（使用“绝对路径”而不是“相对路径”，一是有利于安全性，二是有利于分布式部署）
 
一切准备完毕，运行，结果如下：
【控制台显示出】：共有老师20人
可见AOP已经拦截成功。
若此时，我们在配置文件DeveloperSharp.json/DeveloperSharp.xml中稍做修改，比如：把“GetInfo1”这个方法名改为“ABC”这样一个不存在的方法名，再运行，结果如下：
【控制台显示出】：共有学生200人
 
2.Aspect横切面编程
上面，第二步，制作的横切面程序，是通过修改主程序方法的参数值，而最终改变了主程序的返回值。
其实，我们也有办法直接修改主程序方法的返回值，比如把上面Interceptor1类的代码修改为如下：
//从NuGet引用DeveloperSharp包using DeveloperSharp.Structure.Model.Aspect;namespace School.Aspect{    //横切面程序必须继承自AspectModel类    public class Interceptor1 : AspectModel    {<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>//PreProcess方法先于主程序执行<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public override void PreProcess(object sender, AspectEventArgs e)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>//PostProcess方法后于主程序执行<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public override void PostProcess(object sender, AspectEventArgs e)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    //把主程序的返回值改掉<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    e.MethodInfo.ReturnValue = $"共有校长2人";<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}    }}运行，结果如下：
【控制台显示出】：共有校长2人
 
到目前为止，我们已经知道了如何通过“Aspect横切面程序”修改主程序方法的参数值、返回值。
如果我们想进一步获取主程序的“命名空间”、“类名”、“方法名”、“参数名”、“参数类型”、“返回值类型”，则可以通过如下代码获取：
e.MethodInfo.NamespaceName<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp><?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>       //命名空间e.MethodInfo.ClassName<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp><?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp><?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   //类名e.MethodInfo.MethodName<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp><?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp><?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>//方法名e.MethodInfo.ParameterInfos.Name<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>      //参数名（第一个参数）e.MethodInfo.ParameterInfos.ParameterType   //参数类型（第一个参数）e.MethodInfo.ReturnValue.GetType()<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>       //返回值类型 
有时候，在某些特殊情况下，我们希望主程序方法不运行，此时则可以通过在PreProcess方法里把e.Continue设置为false来完成。
接前面的“第一个AOP程序”，比如：我们希望当人数大于10000时，主程序方法就不再运行，则可以通过把Interceptor1类的代码修改为如下样式来实现：
//从NuGet引用DeveloperSharp包using DeveloperSharp.Structure.Model.Aspect;namespace School.Aspect{    //横切面程序必须继承自AspectModel类    public class Interceptor1 : AspectModel    {<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>//PreProcess方法先于主程序执行<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public override void PreProcess(object sender, AspectEventArgs e)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    //当人数大于10000时，主程序方法就不再运行<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    if (Convert.ToInt32(e.MethodInfo.ParameterValues) > 10000)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp><?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>e.Continue = false;<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>//PostProcess方法后于主程序执行<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public override void PostProcess(object sender, AspectEventArgs e)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}    }}现在的这个示例是一个Aspect横切面程序拦截一个主程序。在后续将要讲解的“多个Aspect横切面程序拦截一个主程序”的情况中，只要有一个e.Continue=false被设置，主程序方法就不会运行（在此事先提点）。
 
3.一个横切面程序拦截多个主程序
为了演示这部分的内容，我们首先在前面“第一个AOP程序”的基础上，把主程序进行扩充。采取的动作是：
（1）在PersonManage类中增加一个GetInfo2方法
（2）再新增一个主程序类SystemManage，该类中有一个名为GetMessage1的方法。代码如下：
PersonManage类：
//从NuGet引用DeveloperSharp包using DeveloperSharp.Structure.Model;namespace School.Logic{    //主程序必须继承自LogicLayer类    public class PersonManage : LogicLayer    {<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public string GetInfo1(string Name, int Num)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    return $"共有{Name}{Num}人";<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public string GetInfo2(string Name, int Num)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    return $"学校共有{Name}{Num}人";<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}    }}SystemManage类：
//从NuGet引用DeveloperSharp包using DeveloperSharp.Structure.Model;namespace School.Logic{    //主程序必须继承自LogicLayer类    public class SystemManage : LogicLayer    {<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public string GetMessage1(string Name1, int Num1, string Name2, int Num2)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    return $"第一组共有{Name1}{Num1}人，第二组共有{Name2}{Num2}人";<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}    }}如此一来，现在就有了3个主程序方法。
 
接下来，我们修改配置文件，让Interceptor1去拦截上述的3个主程序方法。
若是在.Net Core环境下，DeveloperSharp.json文件的内容修改为如下：
{"DeveloperSharp":{   "AspectObject":   [<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp> {<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   "name":"School.Aspect.Interceptor1",<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    "scope":"School.Logic.PersonManage",<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   "method":"*"   //星号*代表该作用域下的全部方法<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp> },<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp> {<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   "name":"School.Aspect.Interceptor1",<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    "scope":"School.Logic.SystemManage",<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   "method":"GetMessage1"<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp> }   ]}}若是在.Net Framework环境下，DeveloperSharp.xml文件的内容修改为如下：
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>     
 最后，我们把控制台启动程序修改为如下：
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>//需要引用School.Aspect、School.Logic、DeveloperSharp三项<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>static void Main(string[] args)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    var pm = new School.Logic.PersonManage();<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    var sm = new School.Logic.SystemManage();<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    //要用这种形式调用主程序中的方法，AOP功能才会生效<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    var str1 = pm.InvokeMethod("GetInfo1", "学生", 200);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    var str2 = pm.InvokeMethod("GetInfo2", "学生", 200);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    var str3 = sm.InvokeMethod("GetMessage1", "学生", 200, "院士", 10);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    Console.WriteLine(str1);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    Console.WriteLine(str2);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    Console.WriteLine(str3);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    Console.ReadLine();<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}运行结果如下：
【控制台显示出】：
共有老师20人
学校共有老师20人
第一组共有老师20人，第二组共有院士10人
可见AOP所有拦截均已成功！
 
4.多个横切面程序拦截一个主程序
为了演示这部分的内容，我们还是要先回到前面的“第一个AOP程序”，在它的基础上，我们新增一个名为Interceptor2的Aspect横切面类，代码如下：
//从NuGet引用DeveloperSharp包using DeveloperSharp.Structure.Model.Aspect;namespace School.Aspect{    //横切面程序必须继承自AspectModel类    public class Interceptor2 : AspectModel    {<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>//PreProcess方法先于主程序执行<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public override void PreProcess(object sender, AspectEventArgs e)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    //把主程序的两个参数值改掉<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    e.MethodInfo.ParameterValues = "辅导员";<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    e.MethodInfo.ParameterValues = 40;<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>//PostProcess方法后于主程序执行<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public override void PostProcess(object sender, AspectEventArgs e)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}    }}如此一来，我们就有了2个Aspect横切面程序Interceptor1与Interceptor2。
 
接下来，我们修改配置文件，让Interceptor1、Interceptor2都去拦截主程序方法GetInfo1。
若是在.Net Core环境下，DeveloperSharp.json文件的内容修改为如下：
{"DeveloperSharp":{   "AspectObject":   [<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp> {<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   "name":"School.Aspect.Interceptor1",<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    "scope":"School.Logic.PersonManage",<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   "method":"GetInfo1"<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp> },<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp> {<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   "name":"School.Aspect.Interceptor2",<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    "scope":"School.Logic.PersonManage",<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   "method":"GetInfo1"<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp> }   ]}}若是在.Net Framework环境下，DeveloperSharp.xml文件的内容修改为如下：
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>     
上述修改完毕，运行控制台主调程序，结果如下：
【控制台显示出】：共有辅导员40人
从上述运行结果，我们大致可以推断出：Interceptor1、Interceptor2这两个Aspect横切面拦截器是按配置顺序执行的。其中，Interceptor1先把GetInfo1方法的两个参数值改为了("老师",20)，接着，Interceptor2又把GetInfo1方法的两个参数值改为了("辅导员",40)，所以最终GetInfo1方法的参数值变为了("辅导员",40)。
 
5.AOP的泛型处理
如果我们的主程序是泛型方法，则需要用InvokeMethod这种方式来进行调用。

比如，现有如下的主程序代码：
//从NuGet引用DeveloperSharp包using DeveloperSharp.Structure.Model;namespace Test4Logic{    //主程序必须继承自LogicLayer类    public class Calculate : LogicLayer    {<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public int add(int i, int j)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    return i + j;<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public int add(int i, int j, int k)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    return i + j + k;<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public string add(T i, T j, T k)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    return "T" + i.ToString() + j.ToString() + k.ToString();<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public string add(T i, T j, V k)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    return "TTV" + i.ToString() + j.ToString() + k.ToString();<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public string add(T i, V j, V k)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    return "TVV" + i.ToString() + j.ToString() + k.ToString();<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}    }} 
对应的Aspect横切面类代码如下：
//从NuGet引用DeveloperSharp包using DeveloperSharp.Structure.Model.Aspect;namespace Test4Aspect{    //横切面程序必须继承自AspectModel类    public class Interceptor : AspectModel    {<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>//PreProcess方法先于主程序执行<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public override void PreProcess(object sender, AspectEventArgs e)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    //把主程序的第一个参数值改掉<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    e.MethodInfo.ParameterValues = 8;<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>//PostProcess方法后于主程序执行<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public override void PostProcess(object sender, AspectEventArgs e)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}    }} 
对应的配置文件如下：
若是在.Net Core环境下，DeveloperSharp.json文件的内容如下：
{"DeveloperSharp":{   "AspectObject":   [<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp> {<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   "name":"Test4Aspect.Interceptor",//横切面拦截器类<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   "scope":"Test4Logic.Calculate",    //被拦截的主程序类<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   "method":"add"<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp><?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>   //被拦截的方法<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp> }   ]}}若是在.Net Framework环境下，DeveloperSharp.xml文件的内容如下：
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp> 
控制台主调程序代码如下： 
<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>//需要引用Test4Aspect、Test4Logic、DeveloperSharp三项<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>static void Main(string[] args)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>      var cal = new Test4Logic.Calculate();<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>      //要用这种形式调用主程序中的方法，AOP功能才会生效<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>      var r1 = cal.InvokeMethod("add", 1, 2);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>      var r2 = cal.InvokeMethod("add", 1, 2, 3);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>      var r3 = cal.InvokeMethod("add", 1, 2, 3);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>      var r4 = cal.InvokeMethod("add", 1, 2, (float)3);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>      var r5 = cal.InvokeMethod("add", 1, (float)2, (float)3);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>      Console.WriteLine(r1);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>      Console.WriteLine(r2);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>      Console.WriteLine(r3);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>      Console.WriteLine(r4);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>      Console.WriteLine(r5);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>      Console.ReadLine();<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>} 
运行上述控制台主调程序，结果如下：
【控制台显示出】：
10
13
T823
TTV823
TVV823
主程序中每个泛型方法的对应调用一目了然。
 
6.AOP的异步处理
如果我们的主程序是异步方法，还是使用InvokeMethod来进行调用。下面给出一个代码样式示例（代码做了简化处理）：
//主程序    //主程序必须继承自LogicLayer类    public class UserService : LogicLayer    {<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public async Task GetUser(string Id, int Age, string Name)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>      //...相关代码...<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public async Task GetUser(string Id, int Age, string Name) where T : User, new()<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>      //...相关代码...<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}    }----------------------------------------------------------------------//主调程序       var us = new UserService();       //要用这种形式调用主程序中的方法，AOP功能才会生效       var worker = await us.InvokeMethod("GetUser", "C007", 26, "alex");       var user = await us.InvokeMethod("GetUser", "A002", 46, "kevin");       Console.WriteLine(worker.Name);       Console.WriteLine(user?.Name); 
即然主程序可以是异步的，那Aspect横截面拦截程序能不能也是异步的了？答案是肯定的。你可以把PreProcess与PostProcess中的至少一个改为异步方法，实现单个Aspect类的同步异步混用，其代码结构与原先的同步Aspect类一致，这点连.NET/微软自身都还没有实现...
下面给出一个示例代码：
    //横切面程序必须继承自AspectModel类    public class UserInterceptor : AspectModel    {<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>//PreProcess方法先于主程序执行<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public override void PreProcess(object sender, AspectEventArgs e)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>//PostProcess方法后于主程序执行<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>public override async void PostProcess(object sender, AspectEventArgs e)<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>{<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    await Task.Run(() =><?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    {<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp><?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>Thread.Sleep(10000);<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp><?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>File.AppendAllText("D:/zzz.txt", "耗时操作");<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>    });<?xml version="1.0" encoding="utf-8" ?>
<DeveloperSharp>
<AspectObject>
    <Ao name="School.Aspect.Interceptor1" scope="School.Logic.PersonManage" method="GetInfo1"/>
</AspectObject>
</DeveloperSharp>}    }  
7.优势总结
本文所讲述的，是全网唯一实现AOP彻底解耦的技术方案。使用它，当你需要给主程序增加Aspect横切面拦截器时，无论是增加一个还是多个，都不再需要修改&重新编译主程序。这实现了不同功能构件之间的0依赖拼装/拆卸开发方式，随之而来的也会对研发团队的管理模式产生重大影响，意义深远...
 
8.展望
AOP对于程序代码的解耦、业务模块的拆分与拼装组合，有着巨大的作用。正确的使用AOP，甚至能对传统的软件架构设计，产生颠覆性的影响，如超级战士出场一般，让所有人刮目相看，完全耳目一新！！
为了让读者能直观感知AOP的上述神奇魅力，下面给出一个业务案例：
有一批货品要录入数据库，货品包含长、宽、高、颜色、类型等属性。现在有业务需求如下，
（1）当货品长度大于10厘米时，它在数据库中标记为A类；当货品长度大于20厘米时，标记为B类。
（2）当货品颜色无法分辨时，统一在数据库中默认标记为白色。
（3）每个货品录入数据库后，还要在另一个财务数据库中录入该货品的价格信息，同时把该货品的操作员名字记入日志文件。
这样的一个业务案例，你以前会怎么设计这个程序？今天学了AOP后你又会怎么设计程序？你会创建几个Aspect横切面了...?
 
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向大佬学习，探行业内幕，享时代机遇。


来源:https://www.cnblogs.com/dotnet-college/p/18128903
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