Castle.DynamicProxy的使用
2024-08-29 01:00:55
简单实现
通过继承实现
public interface ICoding
{
void DoSth();
}
public class Coding : ICoding
{
public virtual void DoSth()
{
Console.WriteLine("敲代码咯！");
}
}
public class ProjectDevelopment : Coding, ICoding
{
public override void DoSth()
{
before();
base.DoSth();
after();
} private void before()
{
Console.WriteLine("需求分析！");
}
private void after()
{
Console.WriteLine("测试！");
}
}
装饰者（由继承改作组合）
public interface ICoding
{
void DoSth();
}
public class Coding : ICoding
{
public virtual void DoSth()
{
Console.WriteLine("敲代码咯！");
}
}
public class ProjectDevelopment : ICoding
{
private ICoding coding;
public ProjectDevelopment(ICoding coding)
{
this.coding = coding;
}
public void DoSth()
{
before();
coding.DoSth();
after();
} private void before()
{
Console.WriteLine("需求分析！");
}
private void after()
{
Console.WriteLine("测试！");
}
}
ASP.NET MVC中的拦截器
public interface IAdditionalOp
{
void before();
void after();
}
public class AdditionalOp : Attribute, IAdditionalOp
{
public void before()
{
Console.WriteLine("需求分析！");
}
public void after()
{
Console.WriteLine("测试！");
}
} public class Coding
{
[AdditionalOp]
public void DoSth()
{
Console.WriteLine("敲代码咯！");
}
} public class ProjectDevelopment
{
public void Development()
{
var classUnder = typeof(Coding);
var allMethods = classUnder.GetMethods();
var methodUnder = allMethods.Where(m => m.Name == "DoSth"); foreach (MethodInfo methodInfo in methodUnder)
{
Attribute[] attributes = Attribute.GetCustomAttributes(methodInfo, typeof(AdditionalOp));
foreach (var item in attributes)
{
(item as AdditionalOp).before();
} Coding coding = new Coding();
coding.DoSth(); foreach (var item in attributes)
{
(item as AdditionalOp).after();
}
}
}
}
动态代理
动态代理，就是在运行时动态地产生代理类，进而产生代理对象。
项目中导入Castle.Core程序包
5种动态代理的生成模式
public interface ICoding
{
void DoSth();
}
public class Coding : ICoding
{
public virtual void DoSth()
{
Console.WriteLine("敲代码咯！");
}
}
public class Architecture : Coding
{
public override void DoSth()
{
Console.WriteLine("架构设计！");
base.DoSth();
}
}
public class MyInterceptor : IInterceptor
{
public void Intercept(IInvocation invocation)
{
before();
if (invocation.InvocationTarget != null)
{
invocation.Proceed();
}
after();
} private void before()
{
Console.WriteLine("需求分析！");
}
private void after()
{
Console.WriteLine("测试！");
}
} public class MyInterceptor2 : IInterceptor
{
public void Intercept(IInvocation invocation)
{
before();
if (invocation.InvocationTarget != null)
{
invocation.Proceed();
}
after();
} private void before()
{
Console.WriteLine("需求分析2！");
}
private void after()
{
Console.WriteLine("测试2！");
}
}
public interface IAddItem
{
void AddItem();
} public class AnotherItem : IAddItem
{
public void AddItem()
{
Console.WriteLine("另一个项目开始了！");
}
}
class Program
{
static void Main(string[] args)
{
ClassProxy();
ClassProxyWithTarget();
InterfaceProxyWithoutTarget();
InterfaceProxyWithTarget();
InterfaceProxyWithTargetInterface();
Mixin();
Mixin2();
Mixin3();
Mixin4();
Mixin5();
Console.ReadKey();
} static void ClassProxy()
{
Console.WriteLine("\n*************ClassProxy*************\n");
var generator = new ProxyGenerator();
var ProjectDevelopment = generator.CreateClassProxy<Coding>(
new MyInterceptor(),
new MyInterceptor2()
);
ProjectDevelopment.DoSth(); Print(ProjectDevelopment);
} static void ClassProxyWithTarget()
{
Console.WriteLine("\n*************ClassProxyWithTarget*************\n");
var generator = new ProxyGenerator();
var ProjectDevelopment = generator.CreateClassProxyWithTarget<Coding>(
new Architecture(),
new MyInterceptor(),
new MyInterceptor2()
);
ProjectDevelopment.DoSth(); Print(ProjectDevelopment);
} static void InterfaceProxyWithoutTarget()
{
Console.WriteLine("\n*************InterfaceProxyWithoutTarget*************\n");
var generator = new ProxyGenerator();
var ProjectDevelopment = generator.CreateInterfaceProxyWithoutTarget<ICoding>(
new MyInterceptor(),
new MyInterceptor2()
);
ProjectDevelopment.DoSth(); Print(ProjectDevelopment);
} static void InterfaceProxyWithTarget()
{
Console.WriteLine("\n*************InterfaceProxyWithTarget*************\n");
var generator = new ProxyGenerator();
var ProjectDevelopment = generator.CreateInterfaceProxyWithTarget<ICoding>(
new Architecture(),
new MyInterceptor(),
new MyInterceptor2()
);
ProjectDevelopment.DoSth(); Print(ProjectDevelopment);
} static void InterfaceProxyWithTargetInterface()
{
Console.WriteLine("\n*************InterfaceProxyWithTargetInterface*************\n");
var generator = new ProxyGenerator();
var ProjectDevelopment = generator.CreateInterfaceProxyWithTargetInterface<ICoding>(
new Architecture(),
new MyInterceptor(),
new MyInterceptor2()
);
ProjectDevelopment.DoSth(); Print(ProjectDevelopment);
}
static void Print(object o)
{
Console.WriteLine();
Console.WriteLine("GetType()：".PadRight(30) + o.GetType());
Console.WriteLine("GetType().BaseType：".PadRight(30) + o.GetType().BaseType); var compositeField = o.GetType().GetField("__target");
Console.WriteLine("__target：".PadRight(30) + compositeField?.FieldType + ", " + compositeField?.Name); foreach (var interfaceType in o.GetType().GetInterfaces())
{
Console.WriteLine("GetType().GetInterfaces()：".PadRight(30) + interfaceType);
} foreach (var a in (o as IProxyTargetAccessor).GetInterceptors())
{
Console.WriteLine("GetInterceptors()：".PadRight(30) + a);
}
} static void Print2(object o)
{
Console.WriteLine();
Console.WriteLine("GetType()：".PadRight(30) + o.GetType());
Console.WriteLine("GetType().BaseType：".PadRight(30) + o.GetType().BaseType); var compositeField = o.GetType().GetField("__target");
Console.WriteLine("__target：".PadRight(30) + compositeField?.FieldType + ", " + compositeField?.Name); foreach (var field in o.GetType().GetFields())
{
if (field.Name.StartsWith("__mixin"))
{
Console.WriteLine("GetType().GetFields()：".PadRight(30) + field?.FieldType + ", " + field?.Name);
}
} foreach (var interfaceType in o.GetType().GetInterfaces())
{
Console.WriteLine("GetType().GetInterfaces()：".PadRight(30) + interfaceType);
} foreach (var a in (o as IProxyTargetAccessor).GetInterceptors())
{
Console.WriteLine("GetInterceptors()：".PadRight(30) + a);
}
} static void Mixin()
{
Console.WriteLine("\n*************CreateClassProxy Mixin*************\n");
var generator = new ProxyGenerator();
var options = new ProxyGenerationOptions();
options.AddMixinInstance(new AnotherItem()); var ProjectDevelopment = generator.CreateClassProxy<Coding>(
options,
new MyInterceptor(),
new MyInterceptor2()
);
ProjectDevelopment.DoSth();
Console.WriteLine("\n");
(ProjectDevelopment as IAddItem).AddItem(); Print2(ProjectDevelopment);
} static void Mixin2()
{
Console.WriteLine("\n*************CreateClassProxyWithTarget Mixin*************\n");
var generator = new ProxyGenerator();
var options = new ProxyGenerationOptions();
options.AddMixinInstance(new AnotherItem()); var ProjectDevelopment = generator.CreateClassProxyWithTarget<Coding>(
new Architecture(),
options,
new MyInterceptor(),
new MyInterceptor2()
); ProjectDevelopment.DoSth();
Console.WriteLine("\n");
(ProjectDevelopment as IAddItem).AddItem(); Print2(ProjectDevelopment);
} static void Mixin3()
{
Console.WriteLine("\n*************CreateInterfaceProxyWithoutTarget Mixin*************\n");
var generator = new ProxyGenerator();
var options = new ProxyGenerationOptions();
options.AddMixinInstance(new AnotherItem()); var ProjectDevelopment = generator.CreateInterfaceProxyWithoutTarget<ICoding>(
options,
new MyInterceptor(),
new MyInterceptor2()
); ProjectDevelopment.DoSth();
Console.WriteLine("\n");
(ProjectDevelopment as IAddItem).AddItem(); Print2(ProjectDevelopment);
} static void Mixin4()
{
Console.WriteLine("\n*************CreateClassProxyWithTarget Mixin*************\n");
var generator = new ProxyGenerator();
var options = new ProxyGenerationOptions();
options.AddMixinInstance(new AnotherItem()); var ProjectDevelopment = generator.CreateClassProxyWithTarget<Coding>(
new Architecture(),
options,
new MyInterceptor(),
new MyInterceptor2()
); ProjectDevelopment.DoSth();
Console.WriteLine("\n");
(ProjectDevelopment as IAddItem).AddItem(); Print2(ProjectDevelopment);
} static void Mixin5()
{
Console.WriteLine("\n*************CreateInterfaceProxyWithTargetInterface Mixin*************\n");
var generator = new ProxyGenerator();
var options = new ProxyGenerationOptions();
options.AddMixinInstance(new AnotherItem()); var ProjectDevelopment = generator.CreateInterfaceProxyWithTargetInterface<ICoding>(
new Architecture(),
options,
new MyInterceptor(),
new MyInterceptor2()
); ProjectDevelopment.DoSth();
Console.WriteLine("\n");
(ProjectDevelopment as IAddItem).AddItem(); Print2(ProjectDevelopment);
}
}
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