现在.NET Core貌似很火，与其他.NET开发者交流不说上几句.NET Core都感觉自己落伍了一样。但是冷静背后我们要也看到.NET Core目前还有太多不足，别的不多说，与自家的服务框架WCF集成起来就不咋地，从最初不支持，到现在有个笨笨咔咔的Web Service Reference Provider，生成的代理类简直不堪入目，还特别的慢。所以本人本着为将来框架的兼容性做准备，就着手研究了下能不能不通过代理类访问WCF，好在微软开源了一部分WCF代码。
WCF的开发者一定很熟悉，WCF的所有配置都是可以通过代码和配置文件两种方式，而大多数开发者都会选择配置文件，但是从.NET Core开始，微软干掉了Web/App.config，不知道别人怎么样，反正我是非常之不习惯。干掉Web/App.config的后果，就是开源支持.NET Core的那部分Client Side没有配置文件的支持，翻看源码后发现，只要是读取配置文件的地方，都是这样的代码 —— PlatformNotSupported。
protected void InitializeEndpoint(string configurationName, EndpointAddress address){ ???????????_serviceEndpoint = this.CreateDescription(); ???????????ServiceEndpoint serviceEndpointFromConfig = null; ???????????// Project N and K do not support System.Configuration, but this method is part of Windows Store contract. ???????????// The configurationName==null path occurs in normal use. ???????????if (configurationName != null) ???????????{ ???????????????throw ExceptionHelper.PlatformNotSupported(); ???????????????// serviceEndpointFromConfig = ConfigLoader.LookupEndpoint(configurationName, address, this.serviceEndpoint.Contract);
}
}但是好在微软又推出了System.Configuration.ConfigurationManager的NuGet包，所以本人仿照WCF原生的配置文件，自己实现一套配置，经过两个晚上的战斗，已经成功。好了，废话不多说，上代码了。
先看看最终的效果是什么样的，WCF服务端的代码结构如下：
采用标准的WCF分层方式，用控制台做宿主，其中IAppService项目版本为.NET Standard 2.0，每个终结点同时使用BasicHttpBinding与NetTcpBinding双重绑定，配置文件如下：
<?xml version="1.0" encoding="utf-8"?><configuration> ?<!--WCF配置--> ?<system.serviceModel> ???<!--WCF服务配置，手动增加service节点--> ???<services> ?????<!--产品服务配置--> ?????<service behaviorConfiguration="DefaultBehavior" name="WCF.AppService.Implements.ProductService"> ???????<host> ?????????<baseAddresses> ???????????<add baseAddress="http://localhost:8098/Hosts/ProductService.svc" /> ???????????<add baseAddress="net.tcp://localhost:8099/Hosts/ProductService.svc" /> ?????????</baseAddresses> ???????</host> ???????<endpoint binding="basicHttpBinding" bindingConfiguration="basicBinding" contract="WCF.IAppService.Interfaces.IProductService" /> ???????<endpoint binding="netTcpBinding" bindingConfiguration="tcpBinding" contract="WCF.IAppService.Interfaces.IProductService" /> ?????</service> ?????<!--订单服务配置--> ?????<service behaviorConfiguration="DefaultBehavior" name="WCF.AppService.Implements.OrderService"> ???????<host> ?????????<baseAddresses> ???????????<add baseAddress="http://localhost:8098/Hosts/OrderService.svc" /> ???????????<add baseAddress="net.tcp://localhost:8099/Hosts/OrderService.svc" /> ?????????</baseAddresses> ???????</host> ???????<endpoint binding="basicHttpBinding" bindingConfiguration="basicBinding" contract="WCF.IAppService.Interfaces.IOrderService" /> ???????<endpoint binding="netTcpBinding" bindingConfiguration="tcpBinding" contract="WCF.IAppService.Interfaces.IOrderService" /> ?????</service> ?????<!--集成服务配置--> ?????<service behaviorConfiguration="DefaultBehavior" name="WCF.AppService.Implements.IntegrationService"> ???????<host> ?????????<baseAddresses> ???????????<add baseAddress="http://localhost:8098/Hosts/IntegrationService.svc" /> ???????????<add baseAddress="net.tcp://localhost:8099/Hosts/IntegrationService.svc" /> ?????????</baseAddresses> ???????</host> ???????<endpoint binding="basicHttpBinding" bindingConfiguration="basicBinding" contract="WCF.IAppService.Interfaces.IIntegrationService" /> ???????<endpoint binding="netTcpBinding" bindingConfiguration="tcpBinding" contract="WCF.IAppService.Interfaces.IIntegrationService" /> ?????</service> ???</services> ???<!--WCF行为配置，配置好无需修改--> ???<behaviors> ?????<serviceBehaviors> ???????<behavior name="DefaultBehavior"> ?????????<!--是否允许get请求访问--> ?????????<serviceMetadata httpGetEnabled="true" /> ?????????<!--允许从请求消息头中检索元数据地址信息--> ?????????<useRequestHeadersForMetadataAddress /> ?????????<!--是否显示异常信息--> ?????????<serviceDebug includeExceptionDetailInFaults="true" /> ?????????<!--最大序列化的对象个数--> ?????????<dataContractSerializer maxItemsInObjectGraph="2147483647" /> ???????</behavior> ?????</serviceBehaviors> ???</behaviors> ???<!--WCF绑定配置，配置好无需修改--> ???<bindings> ?????<netTcpBinding> ???????<binding name="tcpBinding" maxBufferPoolSize="2147483647" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647" closeTimeout="00:10:00" openTimeout="00:10:00" receiveTimeout="00:10:00" sendTimeout="00:10:00" /> ?????</netTcpBinding> ?????<basicHttpBinding> ???????<binding name="basicBinding" maxBufferPoolSize="2147483647" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647" closeTimeout="00:10:00" openTimeout="00:10:00" receiveTimeout="00:10:00" sendTimeout="00:10:00" /> ?????</basicHttpBinding> ???</bindings> ???<!--WCF多宿主绑定配置--> ???<serviceHostingEnvironment multipleSiteBindingsEnabled="true" /> ?</system.serviceModel></configuration>
运行测试没问题，服务端不多说，重点是客户端，因为IAppService是.NET Standard 2.0的类库版本，所以.NET Core客户端是可以正常引用的，新建.NET Core控制台，并引用上述IAppService项目。
客户端项目结构如下：
客户端配置文件如下：
<?xml version="1.0" encoding="utf-8" ?><configuration> ?<configSections> ???<!--WCF配置节点--> ???<section name="system.serviceModel" type="System.ServiceModel.ServiceModelSection, System.ServiceModel.Toolkits" /> ?</configSections> ?<!--WCF配置--> ?<system.serviceModel> ???<!--WCF客户端配置，手动增加endpoint节点--> ???<client> ?????<!--商品服务契约配置--> ?????<endpoint address="net.tcp://localhost:8099/Hosts/ProductService.svc" binding="netTcpBinding" contract="WCF.IAppService.Interfaces.IProductService" name="WCF.IAppService.Interfaces.IProductService"> ???????<headerProvider type="WCF.Core.Client.HeaderProviders.MyHeaderProvider" assembly="WCF.Core.Client"/> ?????</endpoint> ?????<!--订单服务契约配置--> ?????<endpoint address="net.tcp://localhost:8099/Hosts/OrderService.svc" binding="netTcpBinding" contract="WCF.IAppService.Interfaces.IOrderService" name="WCF.IAppService.Interfaces.IOrderService" /> ?????<!--集成服务契约配置--> ?????<endpoint address="net.tcp://localhost:8099/Hosts/IntegrationService.svc" binding="netTcpBinding" contract="WCF.IAppService.Interfaces.IIntegrationService" name="WCF.IAppService.Interfaces.IIntegrationService" /> ???</client> ?</system.serviceModel></configuration>
Main方法中代码如下：
class Program ???{ ???????static void Main(string[] args) ???????{ ???????????//初始化容器 ???????????IContainer container = InitContainer(); ???????????//调用 ???????????IProductService productService = container.Resolve<IProductService>(); ???????????string products = productService.GetProducts(); ???????????Console.WriteLine(products); ???????????container.Dispose(); ???????????Console.ReadKey(); ???????} ???????static IContainer InitContainer() ???????{ ???????????ContainerBuilder builder = new ContainerBuilder(); ???????????Assembly wcfInterfaceAssembly = Assembly.Load("WCF.IAppService"); ???????????//获取WCF接口类型集 ???????????IEnumerable<Type> types = wcfInterfaceAssembly.GetTypes().Where(type => type.IsInterface); ???????????//获取服务代理泛型类型 ???????????Type proxyGenericType = typeof(ServiceProxy<>); ???????????//注册WCF接口 ???????????foreach (Type type in types) ???????????{ ???????????????Type proxyType = proxyGenericType.MakeGenericType(type); ???????????????PropertyInfo propChannel = proxyType.GetProperty(ServiceProxy.ChannelPropertyName, type); ???????????????builder.RegisterType(proxyType).OnRelease(proxy => ((IDisposable)proxy).Dispose()); ???????????????builder.Register(container => propChannel.GetValue(container.Resolve(proxyType))). ???????????????????As(type). ???????????????????OnRelease(channel => channel.CloseChannel()); ???????????} ???????????return builder.Build(); ???????} ???}启动运行结果如下：
怎么样？是不是觉得很清爽？如果你有兴趣，可以到我的Git看全部源码，地址如下：
https://gitee.com/lishilei0523/WCF-DotNetCore
Ps：因为微软公开的WCF类库本身就不完善，所以我也没法提供全部的功能，本人所作调用方式目前支持BasicHttpBinding和NetTcpBinding，并且包含消息头支持。如果你觉得代码对你有帮助，麻烦点个Star，不胜感激。
.NET Core调用WCF的最佳实践
原文地址：https://www.cnblogs.com/lishilei0523/p/8886483.html