Question

What I want to do is; I use the "WSDL" service link from the configuration file and use the service programmatically, taking the name of the method I will use.

the code fragment I'm using statically and running is as follows,

jqgrid 4.4.4

And endpoint is,

ServiceName.serviceClientSoapClient= new ServiceName.serviceClientSoapClient();

string xmlStr = client.getValues();

But,I want all this created programmatically, For example; my config file,

<endpoint address="http://someservice.com/Service.asmx"
        binding="basicHttpBinding" bindingConfiguration="serviceClientSoap"
        contract="ServiceName.serviceClientSoap" name="serviceClientSoap" />

Then i want use this config file, and use service, get results.

I looked at the following links, but here it is done through a single service structure. I want it to be installed from the config file.

How to programmatically connect a client to a WCF service? ,How to: Use the ChannelFactory

Answer 1

最好创建一个接口并将其实现为服务客户端。通过这种方式，您应该指定配置文件中所需的方法，参数和其他内容，并且难以管理。此外，您不能将结果对象用作已知类型类。

所以，你可以尝试类似的东西：

var url = ConfigurationManager.AppSettings["serviceLink"];
var serviceClientClassName = ConfigurationManager.AppSettings["serviceClientClassName"];
var serviceMethod = ConfigurationManager.AppSettings["serviceMethod"];
var endpoint = new EndpointAddress(new Uri(url));
//Specify the assembly of services library. I am assuming that the services are stored in the Executing Assembly
var serviceClient = Assembly.GetExecutingAssembly().GetTypes()
    .FirstOrDefault(x => x.Name == serviceClientClassName);//Find the service client type
var instance = Activator.CreateInstance(serviceClient); //Create a new instance of type
var methodInfo = serviceClient.GetMethod(serviceMethod); //Get method info
var result = methodInfo.Invoke(instance, new object[] {});  // Invoke it

Answer 2

如果您只需要WCF CommunicationObject来处理RequestReply端点，则以下方法将为您执行此操作。

它接受一个有效的Request消息，以及endpoint和soapaction，并提供服务返回的原始xml。

如果您想要提供其他任何内容，那么Message您需要为使用ServiceContract和OperationContract属性修饰的IRequestChannel实现替代方案。

// give it a valid request message, endpoint and soapaction
static string CallService(string xml, string endpoint, string soapaction)
{
    string result = String.Empty;

    var binding = new BasicHttpBinding();

    // create a factory for a given binding and endpoint
    using (var client = new ChannelFactory<IRequestChannel>(binding, endpoint))
    {
        var anyChannel = client.CreateChannel(); // Implements IRequestChannel

        // create a soap message
        var req = Message.CreateMessage(
            MessageVersion.Soap11,
            soapaction,
            XDocument.Parse(xml).CreateReader());

        // invoke the service
        var response = anyChannel.Request(req);

        // assume we're OK
        if (!response.IsFault)
        {
            // get the body content of the reply
            var content = response.GetReaderAtBodyContents();
            // convert to string
            var xdoc = XDocument.Load(content.ReadSubtree());
            result = xdoc.ToString();
        }
        else
        {
            //throw or handle
            throw new Exception("panic");
        }
    }
    return result;
}

要使用上述方法，您可以从配置文件中获取这两个参数，或使用一些常量值：

var result = CallService(
   @"<GetData xmlns=""http://tempuri.org/""><value>42</value></GetData>",
   ConfigurationManager.AppSettings["serviceLink"],
   ConfigurationManager.AppSettings["serviceSoapAction"]);

// example without using appSettings
var result2 = CallService(
   @"<GetValues xmlns=""http://tempuri.org/""></GetValues>",
   "http://localhost:58642/service.svc",
   "http://tempuri.org/IService/GetValues");

请注意，您的配置文件中除了以后不需要任何其他配置：

<appSettings>
    <add key="serviceLink" value="http://localhost:58642/service.svc"/>
    <add key="serviceSoapAction" value="http://tempuri.org/IService/GetData"/>
</appSettings>

使用服务的WSDL来找出soapaction：

 <wsdl:binding name="BasicHttpBinding_IService" type="tns:IService">
    <soap:binding transport="http://schemas.xmlsoap.org/soap/http"/>
    <wsdl:operation name="GetData">
      <soap:operation soapAction="http://tempuri.org/IService/GetData" style="document"/>

并通过其portType和消息的路线，您将找到类型：

 <wsdl:types>
    <xs:schema elementFormDefault="qualified" targetNamespace="http://tempuri.org/" xmlns:xs="http://www.w3.org/2001/XMLSchema">
      <xs:import namespace="http://schemas.datacontract.org/2004/07/"/>
      <xs:element name="GetData">
        <xs:complexType>
          <xs:sequence>
            <xs:element minOccurs="0" name="value" type="xs:int"/>
          </xs:sequence>
        </xs:complexType>
      </xs:element>

您可以从中为GetData构建XML有效内容的形状：

<GetData xmlns="http://tempuri.org/">
    <value>42</value>
</GetData>

Dynamically create service reference and use service

2 个答案: