十五天精通WCF——第一天 三种Binding让你KO80%的业务

  

  转眼wcf技术已经出现很多年了,也在.net界混的风生水起,同时.net也是一个高度封装的框架,作为在wcf食物链最顶端的我们所能做的任务已经简单的不能再简单了,

再简单的话马路上的大妈也能写wcf了,好了,wcf最基本的概念我们放在后面慢慢分析,下面我们来看看神奇的3个binding如何KO我们实际场景中的80%的业务场景。

 

一:basicHttpBinding

  作为入门第一篇,也就不深入谈谈basic中的信道栈中那些啥东西了,你只需要知道有ABC三个要素,注意不是姨妈巾哦,如果需要详细了解,可以观赏我以前的系列。在

这里我就不多说了,太简单的东西没意思,先看个例子简单感受了,你只需知道的是basic走的是http协议就好了,传输消息为soap。

1. 契约

 1 using System.Runtime.Serialization;
 2 using System.ServiceModel;
 3 
 4 namespace MyService
 5 {
 6     [ServiceContract]
 7     public interface IHomeService
 8     {
 9         [OperationContract]
10         int GetLength(string name);
11     }
12 }

2. 实现类

 1 using System;
 2 using System.Messaging;
 3 using System.Threading;
 4 
 5 namespace MyService
 6 {
 7     public class HomeService : IHomeService
 8     {
 9         public int GetLength(string name)
10         {
11             return name.Length;
12         }
13     }
14 }

3. 服务启动

 1 using System;
 2 using System.ServiceModel;
 3 
 4 namespace MyService
 5 {
 6     class Program
 7     {
 8         static void Main(string[] args)
 9         {
10             using (ServiceHost host = new ServiceHost(typeof(HomeService)))
11             {
12                 try
13                 {
14                     host.Open();
15 
16                     Console.WriteLine("服务开启!");
17 
18                     Console.Read();
19                 }
20                 catch (Exception e)
21                 {
22                     Console.WriteLine(e.Message);
23                 }
24             }
25         }
26     }
27 }

4. 配置config文件

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <system.serviceModel>
    <bindings>
      <netTcpBinding>
        <binding name="IHomeServiceBinding" />
      </netTcpBinding>
    </bindings>

    <behaviors>
      <serviceBehaviors>
        <behavior name="">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
        </behavior>
      </serviceBehaviors>
    </behaviors>

    <services>
      <service name="MyService.HomeService">
        <endpoint address="http://127.0.0.1:1920/HomeService" binding="basicHttpBinding" contract="MyService.IHomeService">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>

        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
        <host>
          <baseAddresses>
            <add baseAddress="http://127.0.0.1:1920"/>
          </baseAddresses>
        </host>
      </service>
    </services>

  </system.serviceModel>
</configuration>

5. 然后通过 servicehost 启动服务端

using System;
using System.ServiceModel;

namespace MyService
{
    class Program
    {
        static void Main(string[] args)
        {
            using (ServiceHost host = new ServiceHost(typeof(HomeService)))
            {
                try
                {
                    host.Open();

                    Console.WriteLine("服务开启!");

                    Console.Read();
                }
                catch (Exception e)
                {
                    Console.WriteLine(e.Message);
                }
            }
        }
    }
}

 

好了,到现在为止,服务端全部开启完毕,接下来我们通过“添加服务引用”,来添加对客户端的引用

 1 using System;
 2 
 3 namespace ConsoleApplication1
 4 {
 5     class Program
 6     {
 7         static void Main(string[] args)
 8         {
 9             HomeServiceReference.HomeServiceClient client = new HomeServiceReference.HomeServiceClient();
10 
11             var s = client.GetLength("12345");
12 
13             Console.WriteLine("长度为:{0}", s);
14 
15             Console.Read();
16         }
17     }
18 }

 

麻蛋,就这么简单,是的,就这样简单的五步,基于http的通信就这样被不小心的完成了,真不好意思。

 

二:netTcpBinding

  有了basic的代码,现在我们要改成tcp通信,这会通信走的是字节流,很简单,改一下服务端的config文件就好了,大家也知道这种性能要比basic好。

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior name="mxbehavior">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
        </behavior>
      </serviceBehaviors>
    </behaviors>

    <services>
      <service name="MyService.HomeService" behaviorConfiguration="mxbehavior">
        <endpoint address="net.tcp://localhost:19200/HomeService" binding="netTcpBinding" contract="MyService.IHomeService">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>

        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:1920/HomeService"/>
          </baseAddresses>
        </host>
      </service>
    </services>

  </system.serviceModel>
</configuration>

 

三:netMsmqBinding

  msmq这个玩意,我想大家都清楚,一个物理上的文件,好处呢,你也明白,就是client和service的所有通信都要经过它的手,这样任何一方出了问题,只要

它在就没问题了。同样我们把tcp改成msmq也是非常简单的,不过要注意,msmqbinding中是不可以让契约方法有返回值的。所以我们加上isoneway就好了。

using System.Runtime.Serialization;
using System.ServiceModel;

namespace MyService
{
    [ServiceContract]
    public interface IHomeService
    {
        [OperationContract(IsOneWay = true)]
        void GetLength(string name);
    }
}

然后我在mmc上新建一个消息队列,如下:

然后我们再改动以下配置文件

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior name="mxbehavior">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <bindings>
      <netMsmqBinding>
        <binding name="msmqbinding">
          <security mode="None"/>
        </binding>
      </netMsmqBinding>
    </bindings>
    <services>
      <service name="MyService.HomeService" behaviorConfiguration="mxbehavior">
        <endpoint address="net.msmq://localhost/private/homequeue" binding="netMsmqBinding"
                  contract="MyService.IHomeService" bindingConfiguration="msmqbinding">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>

        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:19200/HomeService"/>
          </baseAddresses>
        </host>
      </service>
    </services>

  </system.serviceModel>
</configuration>

 

纵观上面的三种binding,配置起来何其简单,底层的各种通讯协议貌似对我来说都是透明的,其实呢???wcf在底层做了何其多的事情,而我却没有挖掘。。。

这对码农里说也是一种悲哀啊。。。出了问题就只能祷告上天。。。下一篇我会开始深入剖析。

 

posted @ 2015-06-07 17:22  一线码农  阅读(...)  评论(...编辑  收藏