动态创建的Web引用

本文关键字：引用 Web 创建 动态 | 更新日期: 2023-09-27 18:09:32

我正在开发android应用程序在Xamarin android在c#。有什么方法可以动态更改SOAP web服务的URL吗?我想在某种配置文件中存储url，但我不知道如何做到这一点。

动态创建的Web引用

如果我说错了请指正

但是xamarin - soap webservice类的第二个构造函数有一个URL属性。

这是我的webservice的一个例子:

public partial class Service : System.Web.Services.Protocols.SoapHttpClientProtocol 
    {                    
                public Service() 
                {
                    this.Url = "http://xxx/service.asmx";
                }
                public Service(string url) 
                {
                    this.Url = url;
                }
    }

你已经在xamarin中添加了webreference，然后使用你的webservice - instance。

只需调用第二个构造函数，并给它们一个其他url作为源。

您可以使用Channelfactory手动创建所需的连接，它可以根据需要进行更改。你需要适当的网络连接。配置文件。

你可以这样设置。

在你的web.config.

 <appSettings>
    <add key="Identity" value="machineidentity" />
    <add key="Binding" value="WSHttpBinding_IService" />
    <add key="Endpoint" value="http://Devservice/Service.svc" />
    <add key="Identity2" value="localmachine" />
    <add key="Binding2" value="WSHttpBinding_IService" />
    <add key="Endpoint2" value="http://Devservice/Service.svc" />
    <add key="devIdentity" value="localmachine" />
    <add key="devBinding" value="WSHttpBinding_IService" />
    <add key="devEndpoint" value="http://Devservice/Service.svc" />
  </appSettings>

c# code

保存web.config

中的值的配置类
public static Dictionary<int, Connections> EndpointConnections = new Dictionary<int, Connections>
    {
        {1, new Connections(){Identity = ConfigurationManager.AppSettings["Identity"],Binding = ConfigurationManager.AppSettings["Binding"], Endpoint = ConfigurationManager.AppSettings["Endpoint"]}},
        {2, new Connections(){Identity = ConfigurationManager.AppSettings["Identity2"],Binding = ConfigurationManager.AppSettings["Binding2"], Endpoint = ConfigurationManager.AppSettings["Endpoint2"]}},
        {3, new Connections(){Identity = ConfigurationManager.AppSettings["devIdentity"],Binding = ConfigurationManager.AppSettings["devBinding"], Endpoint = ConfigurationManager.AppSettings["devEndpoint"]}},
   };
现在是创建端点的静态类 
private ChannelFactory<IService> SetChannelFactory(int configInput)
            {
                var identity = EndpointIdentity.CreateDnsIdentity(Configuration.EndpointConnections[configInput].Identity);
                var myBinding = new WSHttpBinding(Configuration.EndpointConnections[configInput].Binding);
                var myuri = new Uri(Configuration.EndpointConnections[configInput].Endpoint);
                var myEndpoint = new EndpointAddress(myuri, identity);
                return new ChannelFactory<IService>(myBinding, myEndpoint);
            }
现在调用和使用端点 
public async Task<Result> SomeAction(int selection)
{
        IService client = null;
        Result result = null;
        Response response = null;
        using (var myChannelFactory = SetChannelFactory(selection))
        {
             try
             {
                  client = myChannelFactory.CreateChannel();
                  response = await client.TheServiceFunction().ConfigureAwait(false);
                  ((ICommunicationObject)client).Close();
             }
             catch
             {
                  if (client != null)
                  {
                       ((ICommunicationObject)client).Abort();
                       return new result ( failure = true);
                  }
             }
        }
        if (response != null)
        {
                 //Whatever you want to do with the response here
                 return new result ( failure = false);
        }
}
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