c# - 带有 SOAP 服务的 Dotnet 核心

Question

我们有一个 ASP.NET Core 系统，我们需要使用 SOAP 连接到另一个 Web 服务(我们从客户那里收到了 WSDL)。

过去，我们应该在 Visual Studio 中使用 WCF 选项来使用“添加服务引用”。

对于 dotnet 核心项目，选项不再可用，但有几个选项可以获得相同的解决方案:

在命令行中使用 SvcUtil 或在此处安装插件 https://blogs.msdn.microsoft.com/webdev/2016/06/26/wcf-connected-service-for-net-core-1-0-0-and-asp-net-core-1-0-0-is-now-available/生成.cs文件

这两种解决方案都需要与这些 nuget 包结合使用 https://github.com/dotnet/wcf

所以我的问题是:除了使用 WCF 在 C# 中访问 SOAP 服务之外，还有其他解决方案吗？

Answer 1

您可以使用类似 Soap UI 的工具获取 xml 请求的实际格式。

然后您可以使用 WebRequest 执行请求 - 类似于下面的代码。据我所知，没有办法自动生成类，因此您必须自己进行反序列化:

    public async static Task<string> CallWebService(string webWebServiceUrl, 
                                string webServiceNamespace, 
                                string methodVerb,
                                string methodName, 
                                Dictionary<string, string> parameters) {
        const string soapTemplate = 
        @"<soapenv:Envelope xmlns:soapenv=""http://schemas.xmlsoap.org/soap/envelope/""
                        xmlns:{0}=""{2}"">
            <soapenv:Header />
            <soapenv:Body>
                <{0}:{1}>
                    {3}
                </{0}:{1}>
            </soapenv:Body>
        </soapenv:Envelope>";

        var req = (HttpWebRequest)WebRequest.Create(webWebServiceUrl);
        req.ContentType =   "text/xml"; //"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, 
                        methodVerb, methodName, webServiceNamespace, parametersText);

        Console.WriteLine("SOAP call to: {0}", webWebServiceUrl);
        Console.WriteLine(soapText);

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

        var responseHttpStatusCode = HttpStatusCode.Unused;
        string responseText = null;

        using (var response = (HttpWebResponse)req.GetResponseAsync().Result) {
            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);
                    }
                }
            }
        }
        return responseText;
        //return responseHttpStatusCode;
    }