记录:Web无引用无配置方式动态调用WCF服务
这几年一直用WebApi较多,最近项目中有个需求比较适合使用WCF,以前也用过JQuery直接调用Wcf的,但是说实话真的忘了…
所以这次解决完还是花几分钟记录一下
WCF服务端:宿主在现有Win服务中,在服务启动时添加代码 ,服务代码就不用写了,接口和实现按照契约实现即可
private ServiceHost serviceHost = null; //服务宿主
//启动WCF服务 if (serviceHost != null) { serviceHost.Close(); } serviceHost = new ServiceHost(typeof(ControlService)); serviceHost.Open(); Toolkit.Log.Warn("WCF服务启动");
服务端ServiceModel配置:个人感觉也是最麻烦的地方,WCF本身支持多种通信方式,所以配置较多,不过基本了解后也差不多
详细可参考:http://www.cnblogs.com/ingstyle/p/5711249.html
<?xml version="1.0" encoding="utf-8" ?> <configuration> <system.serviceModel> <services> <!-- This section is optional with the new configuration model introduced in .NET Framework 4. --> <service name="命名空间+类名" behaviorConfiguration="ControlServiceBehavior"> <host> <baseAddresses> <add baseAddress="http://localhost:8000/ServiceModel/service.svc"/> </baseAddresses> </host> <!-- this endpoint is exposed at the base address provided by host: http://localhost:8000/ServiceModel/service --> <endpoint address="" binding="wsHttpBinding" contract="命名空间+接口名" /> <!-- the mex endpoint is exposed at http://localhost:8000/ServiceModel/service/mex --> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /> </service> </services> <behaviors> <serviceBehaviors> <behavior name="ControlServiceBehavior"> <serviceMetadata httpGetEnabled="true"/> <serviceDebug includeExceptionDetailInFaults="False"/> </behavior> </serviceBehaviors> </behaviors> </system.serviceModel> </configuration>
启动完后可访问:http://localhost:8000/ServiceModel/service.svc 查看如下图:
客户端WCF服务调用封装:
public class WCFHelper { public WCFHelper() { } public static object ExecuteMethod<T>(Binding bind, string pUrl, string pMethodName, params object[] pParams) { EndpointAddress address = new EndpointAddress(pUrl); Binding bindinginstance = null; bindinginstance = bind; using (ChannelFactory<T> channel = new ChannelFactory<T>(bindinginstance, address)) { T instance = channel.CreateChannel(); using (instance as IDisposable) { try { Type type = typeof(T); MethodInfo mi = type.GetMethod(pMethodName); return mi.Invoke(instance, pParams); } catch (TimeoutException) { (instance as ICommunicationObject).Abort(); throw; } catch (CommunicationException) { (instance as ICommunicationObject).Abort(); throw; } catch (Exception vErr) { (instance as ICommunicationObject).Abort(); throw; } } } } }
由于是动态调用的,所以没有任何配置,可以向下边这样直接使用:
WSHttpBinding bind = new WSHttpBinding();//重点这儿,可以传递不同的Bind,和对应的服务端配置参数(如果参数和服务端不一致则会报错) WCFHelper.ExecuteMethod<IControlService>(bind,"http://localhost:8000/ServiceModel/service.svc", "ResetTerminal", new object[] { "参数" });
注意第一个参数需根据对应的WCF服务端配置对应
例如服务端是webHttpBinding,这儿也换成webHttpBinding bind=new webHttpBinding() 即可,这里我使用的WSHttpBinding
如果有想了解JQuery调用WCF的方式请参考站长的博客:http://www.cnblogs.com/dudu/archive/2009/07/14/1523082.html
注意:如果碰到 "响应消息的内容类型 text/html; charset=utf-8 与绑定(text/xml; charset=utf-8)的内容类型不匹配。"
也有可能是Bind的方式不匹配,另外Host里的地址尽量用IP地址来绑定