如何在.net中调用没有wsdl的web服务

首先,我们创建一个HttpWebRequest:

public static HttpWebRequest CreateWebRequest(string url)
{
    HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(url);
    webRequest.Headers.Add("SOAP:Action");
    webRequest.ContentType = "text/xml;charset=\"utf-8\"";
    webRequest.Accept = "text/xml";
    webRequest.Method = "POST";
    return webRequest;
}

public static XmlDocument ServiceCall(string url, int service, StringDictionary data)
{
    HttpWebRequest request = CreateWebRequest(url);

    XmlDocument soapEnvelopeXml = GetSoapXml(service, data);

    using (Stream stream = request.GetRequestStream())
    {
        soapEnvelopeXml.Save(stream);
    }

    IAsyncResult asyncResult = request.BeginGetResponse(null, null);

    asyncResult.AsyncWaitHandle.WaitOne();

    string soapResult;
    using (WebResponse webResponse = request.EndGetResponse(asyncResult))
    using (StreamReader rd = new StreamReader(webResponse.GetResponseStream()))
    {
        soapResult = rd.ReadToEnd();
    }

    File.WriteAllText(HttpContext.Current.Server.MapPath("/servicios/" + DateTime.Now.Ticks.ToString() + "assor_r" + service.ToString() + ".xml"), soapResult);

    XmlDocument resp = new XmlDocument();

    resp.LoadXml(soapResult);

    return resp;
}

就这些。如果有人认为必须在答案中添加GetSoapXml,我会把它写下来。

必须 软盘 拇指驱动!

如果您有任何能力向这项服务的提供商投诉,那么我敦促您这样做。如果你有推回的能力,那么就这样做。理想情况下,切换服务提供者,并告诉这些人这是因为他们没有提供WSDL。至少,找出他们认为这不重要的原因。

我已经创建了以下帮助器方法来手动调用WebService,无需任何引用:

public static HttpStatusCode CallWebService(string webWebServiceUrl, 
                                            string webServiceNamespace, 
                                            string methodName, 
                                            Dictionary<string, string> parameters, 
                                            out string responseText)
{
    const string soapTemplate = 
@"<?xml version=""1.0"" encoding=""utf-8""?>
<soap:Envelope xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" 
   xmlns:xsd=""http://www.w3.org/2001/XMLSchema"" 
   xmlns:soap=""http://www.w3.org/2003/05/soap-envelope"">
  <soap:Body>
    <{0} xmlns=""{1}"">
      {2}    </{0}>
  </soap:Body>
</soap:Envelope>";

    var req = (HttpWebRequest)WebRequest.Create(webWebServiceUrl);
    req.ContentType = "application/soap+xml;";
    req.Method = "POST";

    string parametersText;

    if (parameters != null && parameters.Count > 0)
    {
        var sb = new StringBuilder();
        foreach (var oneParameter in parameters)
            sb.AppendFormat("  <{0}>{1}</{0}>\r\n", oneParameter.Key, oneParameter.Value);

        parametersText = sb.ToString();
    }
    else
    {
        parametersText = "";
    }

    string soapText = string.Format(soapTemplate, methodName, webServiceNamespace, parametersText);


    using (Stream stm = req.GetRequestStream())
    {
        using (var stmw = new StreamWriter(stm))
        {
            stmw.Write(soapText);
        }
    }

    var responseHttpStatusCode = HttpStatusCode.Unused;
    responseText = null;

    using (var response = (HttpWebResponse)req.GetResponse())
    {
        responseHttpStatusCode = response.StatusCode;

        if (responseHttpStatusCode == HttpStatusCode.OK)
        {
            int contentLength = (int)response.ContentLength;

            if (contentLength > 0)
            {
                int readBytes = 0;
                int bytesToRead = contentLength;
                byte[] resultBytes = new byte[contentLength];

                using (var responseStream = response.GetResponseStream())
                {
                    while (bytesToRead > 0)
                    {
                        // Read may return anything from 0 to 10. 
                        int actualBytesRead = responseStream.Read(resultBytes, readBytes, bytesToRead);

                        // The end of the file is reached. 
                        if (actualBytesRead == 0)
                            break;

                        readBytes += actualBytesRead;
                        bytesToRead -= actualBytesRead;
                    }

                    responseText = Encoding.UTF8.GetString(resultBytes);
                    //responseText = Encoding.ASCII.GetString(resultBytes);
                }
            }
        }
    }

    // standard responseText: 
    //<?xml version="1.0" encoding="utf-8"?>
    //<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    //    <soap:Body>
    //        <SayHelloResponse xmlns="http://tempuri.org/">
    //            <SayHelloResult>Hello</SayHelloResult>
    //        </SayHellorResponse>
    //    </soap:Body>
    //</soap:Envelope>
    if (!string.IsNullOrEmpty(responseText))
    {
        string responseElement = methodName + "Result>";
        int pos1 = responseText.IndexOf(responseElement);

        if (pos1 >= 0)
        {
            pos1 += responseElement.Length;
            int pos2 = responseText.IndexOf("</", pos1);

            if (pos2 > pos1)
                responseText = responseText.Substring(pos1, pos2 - pos1);
        }
        else
        {
            responseText = ""; // No result
        }
    }

    return responseHttpStatusCode;
}

然后,您可以使用以下代码简单地调用任何web服务方法:

var parameters = new Dictionary<string, string>();
parameters.Add("name", "My Name Here");

string responseText;
var responseStatusCode = CallWebService("http://localhost/TestWebService.asmx", 
                                        "http://tempuri.org/", 
                                        "SayHello", 
                                        parameters, 
                                        out responseText);

如果幸运的话,您仍然可以获得wsdl。一些web服务框架允许您检索动态生成的WSDL。

使用Axis1.x编写的Web服务允许您通过浏览URL来检索动态生成的WSDL文件。

只要浏览到

http://server/service.soap/?wsdl

不过,我不知道这是否适用于其他框架。

嗯,这里有一个棘手的问题,但不是不可能,但我会尽我所能解释它。

1. 创建与您在第三方服务上处理的对象架构相匹配的可序列化类。
3. 看看你是否可以创建一个asmx,它模仿他们的服务,能够处理请求和响应(如果他们的服务关闭,这将有助于测试你的客户端应用程序)
4. 然后,您可以从虚拟服务创建服务代理,并在调用第三方服务时更改服务url。
5. 如果您的客户机中出现问题,那么您可以调整虚拟服务,重新生成代理并重试。