转自url:http://greatverve.cnblogs.com/archive/2011/11/30/silverlight-wcf-pub.htmlhtml
咱们在编写Silverlight程序时,大多状况下都须要借助WCF来访问咱们的后端数据库,在开发过程当中访问数据库都是正常的,可是当把整个silverlight项目连同WCF发布到IIS上以后,会遇到这样一个问题:在host IIS的服务器上可以正常访问数据库,可是当经过client端执行程序时却没法访问数据库,也没有错误信息,调用页面都是正常的。web
应该有不少人都遇到了这个问题,在网上也有不少关于这个问题的解决方法,可是绝大部分都是从跨域访问的角度来解决这个问题的,而后再尝试添加了clientaccesspolicy.xml和crossdomain.xml这两个配置文件,而且添加了IIS中MIME配置后,依然有不少人没有解决,我就是其中之一,花了一些时间研究了一下WCF的原理,最后从新对WCF进行了配置检查,更改了对WCF绑定和调用的方式,这才得以把问题完全解决,下面和你们一块儿分享一下具体步骤。数据库
检查你的ServiceReferences.ClientConfig文件,这个文件是你在Silverlight程序中添加服务引用时自动生成的,检查里面绑定WCF的方式是否为BasicHttpBinding,具体代码以下:后端
- <configuration>
- <system.serviceModel>
- <bindings>
- <basicHttpBinding>
- <binding name="BasicHttpBinding_Gxpt_Service" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647">
- <security mode="None"/>
- </binding>
- </basicHttpBinding>
- </bindings>
- <client>
- <endpoint address="http://localhost:9545/Gxpt_Service.svc" binding="basicHttpBinding"
- bindingConfiguration="BasicHttpBinding_Gxpt_Service" contract="GxptServiceReference.Gxpt_Service"
- name="BasicHttpBinding_Gxpt_Service" />
- </client>
- </system.serviceModel>
- </configuration>
在你的Web工程下找到web.config文件,一样检查里面的WCF配置信息,绑定方式是否为"basicHttpBinding"方式,而且契约的名称是否填写正确,其具体代码以下:跨域
- <system.serviceModel>
- <behaviors>
- <serviceBehaviors>
- <behavior name="">
- <serviceMetadata httpGetEnabled="true" />
- <serviceDebug includeExceptionDetailInFaults="true" />
- <dataContractSerializer maxItemsInObjectGraph="2147483647"/>
- </behavior>
- </serviceBehaviors>
- </behaviors>
- <bindings>
- <basicHttpBinding>
- <binding name="BasicHttpBinding_Gxpt_Service" maxBufferPoolSize="2147483647"
- maxReceivedMessageSize="2147483647" maxBufferSize="2147483647">
- <readerQuotas maxArrayLength="2147483647" maxBytesPerRead="2147483647"
- maxDepth="2147483647" maxNameTableCharCount="2147483647"
- maxStringContentLength="2147483647" />
- </binding>
- </basicHttpBinding>
- </bindings>
- <serviceHostingEnvironment aspNetCompatibilityEnabled="true"
- multipleSiteBindingsEnabled="true" />
- <services>
- <service name="PubilshTest.Web.Gxpt_Service">
- <endpoint address="" binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_Gxpt_Service"
- contract="PubilshTest.Web.Gxpt_Service" />
- <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
- </service>
- </services>
- </system.serviceModel>
最后,修改一下你调用WebService的代码:服务器
- BasicHttpBinding binding = new BasicHttpBinding(BasicHttpSecurityMode.None);
- binding.MaxReceivedMessageSize = int.MaxValue;
- binding.MaxBufferSize = int.MaxValue;
- GxptServiceReference.Gxpt_ServiceClient client = new GxptServiceReference.Gxpt_ServiceClient(binding, new EndpointAddress(
- new Uri(Application.Current.Host.Source, "../Gxpt_Service.svc")));
- client.GetDataAsync();
- client.GetDataCompleted += new EventHandler<GxptServiceReference.GetDataCompletedEventArgs>(client_GetDataCompleted);
OK,能够再从新编译以后发布一下,别忘了加上必不可少的clientaccesspolicy.xml和crossdomain.xml这两个文件,不然你是没法经过IP访问到WCF的。dom
但愿你看完以后,烦恼多日的问题可以迎刃而解。
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