应用框架的设计与实现——.NET平台(4.3 SAF代码分析.源码1)

普通的实现方式和作者的实现方式：

1.普通实现方式。

业务代码：Business.cs

using System;

namespace Business
...{
    public class biz1 : MarshalByRefObject
    ...{
        public string hi()
        ...{
            return "hello world! I'm biz1.";
        }
    }
    public class biz2 : MarshalByRefObject
    ...{
        public string hi()
        ...{
            return "hello world! I'm biz2.";
        }
    }
    public class biz3 : MarshalByRefObject
    ...{
        public string hi()
        ...{
            return "hello world! I'm biz3.";
        }
    }

    public class Demo1 : MarshalByRefObject
    ...{
        public string where()
        ...{
            return "Demo1: I'm here.";
        }
    }
    public class Demo2 : MarshalByRefObject
    ...{
        public string where()
        ...{
            return "Demo2: I'm here.";
        }
    }
    public class Demo3 : MarshalByRefObject
    ...{
        public string where()
        ...{
            return "Demo3: I'm here.";
        }
    }
}

远程对象服务：remotingserver.cs

using System;
using System.Runtime.Remoting;

namespace RemotingServer
...{
    public class Program
    ...{
        public static void Main()
        ...{
            RemotingConfiguration.Configure("Server.config");
            Console.WriteLine("service started.");
            Console.WriteLine("press any key to exit application.");
            Console.ReadLine();
        }
    }
}

服务器端配置文件：Server.Config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <system.runtime.remoting>
    <application name="remotingserver">
      <service>
        <wellknown mode="SingleCall" type="Business.biz1, Business"
           objectUri="biz1.rem" />
     <wellknown mode="SingleCall" type="Business.biz2, Business"
           objectUri="biz2.rem" />
     <wellknown mode="SingleCall" type="Business.biz3, Business"
           objectUri="biz3.rem" />
     <wellknown mode="SingleCall" type="Business.Demo1, Business"
           objectUri="Demo1.rem" />
     <wellknown mode="SingleCall" type="Business.Demo2, Business"
           objectUri="Demo2.rem" />
     <wellknown mode="SingleCall" type="Business.Demo3, Business"
           objectUri="Demo3.rem" />
      </service>
      <channels>
        <channel ref="http" port="8989"/>
      </channels>
    </application>
  </system.runtime.remoting>
</configuration>

客户端代码：Client.cs

using System;
using System.Runtime.Remoting;

using Business;

namespace Client
...{
    public class Client
    ...{
        public static void Main()
        ...{
            RemotingConfiguration.Configure("Client.config");
            biz1 biz1 = new biz1();
            biz2 biz2 = new biz2();
            biz3 biz3 = new biz3();
            Demo1 demo1 = new Demo1();
            Demo2 demo2 = new Demo2();
            Demo3 demo3 = new Demo3();

            Console.WriteLine(biz1.hi());
            Console.WriteLine(biz2.hi());
            Console.WriteLine(biz3.hi());
            Console.WriteLine(demo1.where());
            Console.WriteLine(demo2.where());
            Console.WriteLine(demo3.where());

            Console.ReadLine();
        }
    }
}

客户端配置文件：Client.Config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <system.runtime.remoting>
    <application name="Client">
      <client>
        <wellknown type="Business.biz1, Business"
                   url="http://localhost:8989/remotingserver/biz1.rem"/>
        <wellknown type="Business.biz2, Business"
                   url="http://localhost:8989/remotingserver/biz2.rem"/>
        <wellknown type="Business.biz3, Business"
                   url="http://localhost:8989/remotingserver/biz3.rem"/>

        <wellknown type="Business.Demo1, Business"
                   url="http://localhost:8989/remotingserver/Demo1.rem"/>
        <wellknown type="Business.Demo2, Business"
                   url="http://localhost:8989/remotingserver/Demo2.rem"/>
        <wellknown type="Business.Demo3, Business"
                   url="http://localhost:8989/remotingserver/Demo3.rem"/>
      </client>
    </application>
  </system.runtime.remoting>
</configuration>

2.作者的实现方式。

业务代码：Business.cs

using System;

namespace Business
...{
    // bizFactory
    public class bizFactory : MarshalByRefObject
    ...{
        public Biz getbiz1()
        ...{
            return new Biz1();
        }
        public Biz getbiz2()
        ...{
            return new Biz2();
        }
        public Biz getbiz3()
        ...{
            return new Biz3();
        }
    }
    // abstruct class Biz
    public abstract class Biz : MarshalByRefObject
    ...{
        public Biz()
        ...{
            Console.WriteLine("biz construct.");
        }
        ~Biz()
        ...{
            Console.WriteLine("biz destory.");
        }
        public abstract string hi();
    }
    public class Biz1 : Biz
    ...{
        public override string hi()
        ...{
            return "hello world! I'm biz1.";
        }
    }
    public class Biz2 : Biz
    ...{
        public override string hi()
        ...{
            return "hello world! I'm biz2.";
        }
    }
    public class Biz3 : Biz
    ...{
        public override string hi()
        ...{
            return "hello world! I'm biz3.";
        }
    }
    // DemoFactory
    public class DemoFactory : MarshalByRefObject
    ...{
        public Demo getDemo1()
        ...{
            return new Demo1();
        }
        public Demo getDemo2()
        ...{
            return new Demo2();
        }
        public Demo getDemo3()
        ...{
            return new Demo3();
        }
    }
    // abstruct class Demo
    public abstract class Demo : MarshalByRefObject
    ...{
        public Demo()
        ...{
            Console.WriteLine("Demo construct.");
        }
        ~Demo()
        ...{
            Console.WriteLine("Demo destory.");
        }
        public abstract string where();
    }
    public class Demo1 : Demo
    ...{
        public override string where()
        ...{
            return "Demo1: I'm here.";
        }
    }
    public class Demo2 : Demo
    ...{
        public override string where()
        ...{
            return "Demo2: I'm here.";
        }
    }
    public class Demo3 : Demo
    ...{
        public override string where()
        ...{
            return "Demo3: I'm here.";
        }
    }
}

远程对象服务： remotingserver.cs

using System;
using System.Runtime.Remoting;

namespace RemotingServer
...{
    public class Program
    ...{
        public static void Main()
        ...{
            RemotingConfiguration.Configure("Server.config");
            Console.WriteLine("service started.");
            Console.WriteLine("press any key to exit application.");
            Console.ReadLine();
        }
    }
}

服务端配置文件：Server.Config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <system.runtime.remoting>
    <application name="remotingserver">
      <service>
        <wellknown mode="SingleCall" type="Business.bizFactory, Business"
           objectUri="bizFactory.rem" />

     <wellknown mode="SingleCall" type="Business.DemoFactory, Business"
           objectUri="DemoFactory.rem" />
      </service>
      <channels>
        <channel ref="http" port="8989"/>
      </channels>
    </application>
  </system.runtime.remoting>
</configuration>

客户端类工厂：ClassFactory.cs

using System;
using System.Xml;
using System.Configuration;

using SAF.Configuration;

namespace ClassService
...{
    public class ClassFactory
    ...{
        public static object GetFactory(string factoryName)
        ...{
            object factory = null;
            SAF.Configuration.ConfigurationManager cm = (SAF.Configuration.ConfigurationManager)ConfigurationSettings.GetConfig("Framework");
            ClassFactoryConfiguration cf = cm.ClassFactoryConfig;
            XmlNode classFactoryData = cf.GetFactoryData(factoryName);

            //obtain the type information
            string type = classFactoryData.Attributes["type"].Value;
            Type t = System.Type.GetType(type);
            string location = classFactoryData.Attributes["location"].Value;
            factory = Activator.GetObject(t,location);
            return factory;
        }
    }
}

客户端代码：Client.cs

using System;
using System.Runtime.Remoting;

using ClassService;
using Business;

namespace Client
...{
    public class Client
    ...{
        public static void Main()
        ...{
            bizFactory bizFactory = (bizFactory)ClassFactory.GetFactory("bizFactory");
            DemoFactory demoFactory= (DemoFactory)ClassFactory.GetFactory("DemoFactory");

            Biz biz1 = bizFactory.getbiz1();
            Biz biz2 = bizFactory.getbiz2();
            Biz biz3 = bizFactory.getbiz3();
            Demo demo1 = demoFactory.getDemo1();
            Demo demo2 = demoFactory.getDemo2();
            Demo demo3 = demoFactory.getDemo3();

            Console.WriteLine(biz1.hi());
            Console.WriteLine(biz2.hi());
            Console.WriteLine(biz3.hi());
            Console.WriteLine(demo1.where());
            Console.WriteLine(demo2.where());
            Console.WriteLine(demo3.where());

            Console.ReadLine();
        }
    }
}

客户端配置文件：Client.exe.Config
调试了一天，发现配置文件名竟然错了。应该是（配置文件名＝应用程序名＋.config）

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <configSections>
        <section name="Framework" type="SAF.Configuration.ConfigurationHandler,SAF.Configuration" />
    </configSections>
    <Framework type="SAF.Configuration.ConfigurationManager,SAF.Configuration">
        <SAF.ClassFactory>
            <Class name="bizFactory" location="http://localhost:8989/remotingserver/bizFactory.rem" type="Business.bizFactory, Business" />
            <Class name="DemoFactory" location="http://localhost:8989/remotingserver/DemoFactory.rem" type="Business.DemoFactory, Business" />
        </SAF.ClassFactory>
    </Framework>
</configuration>