SharePoint BDC模型与WCF

Question

这是我的场景..。

我在VS2010中创建了一个BDC模型项目，以便在SharePoint2010中进行部署。我已经向我们在另一个系统上运行的WCF服务添加了一个服务引用。我希望我的ReadList方法调用另一个系统上的WCF服务来提取列表中显示的数据。

我已经为ReadList方法创建了一个单元测试，以在部署之前验证它是否有效。我得到的错误消息是“无法在ServiceModel客户端配置部分找到引用合同‘ServiceModel’的默认端点元素。”

当我添加服务引用时，会向项目中添加一个app.config，该项目似乎具备运行该服务所需的一切。

我的两个问题是

1. 有任何人在使用BDC
2. 的非sharepoint外部系统中获得WCF服务，当模型被部署时，app.config设置会被适当地放置在sharepoint系统？

中吗？

Answer 1

不幸的是，在本例中，我还没有找到使用app配置文件的方法。一种方法是在代码中定义端点，并可能将端点地址保存在农场属性包中。请注意，您必须添加对System.ServiceModel的引用。

    private static string endpointUri = SPContext.Current.Site.WebApplication.Farm.Properties["Service_Uri_PropertyBag_Key"] as string;
    private static EndpointAddress endpoint = new EndpointAddress(endpointUri);
    private static BasicHttpBinding binding = new BasicHttpBinding();

然后，调用WCF服务将类似于：

        using (ReferencedServiceClient client = new ReferencedServiceClient(binding, endpoint))
        {
            return client.ReadList();
        }

Answer 2

我在许多项目中使用过WCF与BDC一起工作。我通常做的事情如下所述。

1)创建一个单独的SharePoint解决方案，名为SPCommon

2)添加服务参考

3)创建MyAppSettings.cs

 public class MyAppSettings
 {
    public string MyServiceEndPoint
    {
       get;
       set;
    }
 }

4)创建ConfigurationManager.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.SharePoint;
using System.Configuration;
using System.Web.Configuration;
using Microsoft.SharePoint.Administration;

namespace MyApp
{
   public class ConfigurationManager
    {       
       SPSite site;

       public ConfigurationManager(SPSite site)
       {
           this.site = site;        
       }

       public MyAppSettings GetAppSettings()
       {
           try
           {
               System.Configuration.Configuration config = WebConfigurationManager.OpenWebConfiguration("/", site.WebApplication.Name);
               AppSettingsSection appSettingSection = config.AppSettings;

               MyAppSettings settings = new MyAppSettings();
               settings.MyServiceEndPoint = appSettingSection.Settings["MyServiceEndPoint"].Value;

               return settings;
           }
           catch (Exception ex)
           {
               // Log Error              
           }
           return null;
       }
    }
}

5)创建一个MyServiceConnection.cs文件

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using MyServiceReference;
using System.ServiceModel;
using Microsoft.SharePoint;

namespace MyApp
{
    public class MyServiceConnection
    {
        public const int _maxBufferSize = 2147483647;
        public const int _maxReceivedBufferSize = 2147483647;
        public const int _maxStringContentLength = 2147483647;
        public const int _maxArrayLength = 2147483647;
        public const int _maxBytesPerRead = 2147483647;
        public const int _maxNameTableCharCount = 2147483647;
        public const int _maxDepth = 2147483647;   

        public static MyServiceProxyClient GetMyServiceProxyClient()
        {
            SPSite site = SPContext.Current.Site;

            // Get the EndPointUrl from Web.config appsetting
            ConfigurationManager configMgr = new ConfigurationManager(site);
            var appSetting = configMgr.GetAppSettings();

            EndpointAddress myServicecrmEndPoint;

            if (appSetting != null)
            {
                myServiceEndPoint = new EndpointAddress(appSetting.MyServiceEndPoint);

                var proxy = new MyServiceProxyClient(
                    new BasicHttpBinding(BasicHttpSecurityMode.TransportCredentialOnly)
                    {
                        MaxBufferSize = _maxBufferSize,
                        MaxReceivedMessageSize = _maxReceivedBufferSize,
                        ReaderQuotas = new System.Xml.XmlDictionaryReaderQuotas()
                        {
                            MaxStringContentLength = _maxStringContentLength,
                            MaxArrayLength = _maxArrayLength,
                            MaxBytesPerRead = _maxBytesPerRead,
                            MaxNameTableCharCount = _maxNameTableCharCount,
                            MaxDepth = _maxDepth
                        },
                    },
                    myServiceEndPoint
                );
                return proxy;
            }
            else
            {
                // Log Error

                return null;
            }            
        }      
    }
}

6)在外部列表解决方案中，添加对SPCommon项目的引用

7)调用服务方法ReadMyList()，如下所示

MyServiceProxyClient service = SPCommon.GetMyServiceProxyClient();
listData = service.ReadMyList();

8)将追加添加到Web.config中

  <appSettings>
    <add key="MyServiceEndPoint" value="http://localhost:8101/MyService.svc" />
  </appSettings>

9)确保同时部署SPCommon和外部列表解决方案。