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我在尝试在 RESTful WCF 服务中编写代码时遇到了一些麻烦。我已经为调用客户端应用程序提供了一个方法,并且我收到了格式为 Ax27834 的消息......这是一个 Base64 二进制消息。问题是,收到此消息后,我需要能够将其转换回从客户端发送的该消息的原始 xml 版本。如何在下面的代码片段中实现这一点。在下面的第 6 行,您将看到代码需要去哪里。我一直在寻找解决方案,但没有找到任何合适的解决方案。我必须接收消息而不是流。

我应该强调,该服务在接收请求方面运行良好。我只是在努力将消息转换成我可以使用的形式。

接收代码

public Message StoreMessage(Message request)
{
    //Store the message
    try
        {
        string message = [NEED SOLUTION HERE]

        myClass.StoreNoticeInSchema(message, DateTime.Now);
    }
    catch (Exception e)
    {
        log4net.Config.XmlConfigurator.Configure();

        ILog log = LogManager.GetLogger(typeof(Service1));

        if (log.IsErrorEnabled)
        {
            log.Error(String.Format("{0}: Notice was not stored. {1} reported an exception. {2}", DateTime.Now, System.Reflection.MethodBase.GetCurrentMethod().DeclaringType, e.Message));
        }
    }

    XElement responseElement = new XElement(XName.Get("elementName", "url"));

    XDocument resultDocument = new XDocument(responseElement);

    return Message.CreateMessage(OperationContext.Current.IncomingMessageVersion, "elementName", resultDocument.CreateReader());
}

客户端代码

public string CallPostMethod()
    {
        const string action = "StoreNotice/New";

        TestNotice testNotice = new TestNotice();

        const string url = "http://myaddress:myport/myService.svc/StoreNotice/New";

        string contentType = String.Format("application/soap+xml; charset=utf-8; action=\"{0}\"", action);
        string xmlString = CreateSoapMessage(url, action, testNotice.NoticeText);

        HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);

        ASCIIEncoding encoding = new ASCIIEncoding();

        byte[] bytesToSend = encoding.GetBytes(xmlString);

        request.Method = "POST";
        request.ContentLength = bytesToSend.Length;
        request.ContentType = contentType;

        using (Stream requestStream = request.GetRequestStream())
        {
            requestStream.Write(bytesToSend, 0, bytesToSend.Length);
            requestStream.Close();
        }

        string responseFromServer;

        HttpWebResponse response = (HttpWebResponse)request.GetResponse();

        using (Stream dataStream = response.GetResponseStream())
        {
            using (StreamReader reader = new StreamReader(dataStream))
                responseFromServer = reader.ReadToEnd();
            dataStream.Close();
        }

        XDocument document = XDocument.Parse(responseFromServer);
        string nameSpace = "http://www.w3.org/2003/05/soap-envelope";
        XElement responseElement = document.Root.Element(XName.Get("Body", nameSpace))
                                             .Element(XName.Get(@action + "Response", "http://www.wrcplc.co.uk/Schemas/ETON"));


        return responseElement.ToString();
    }

创建 SOAP 消息的代码

  protected string CreateSoapMessage(string url, string action, string messageContent)
    {
        return String.Format(
 @"<?xml version=""1.0"" encoding=""utf-8""?>
 <soap12:Envelope xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" 
 xmlns:xsd=""http://www.w3.org/2001/XMLSchema"" xmlns:soap12=""http://www.w3.org/2003/05/soap-envelope""><soap12:Body>{0}</soap12:Body>
</soap12:Envelope>
", messageContent, action, url);
    }

注意:TestNotice() 对象包含一个大的 xml 字符串,它是消息的主体。

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1 回答 1

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对于 Message 对象,您通常使用 GetReaderAtBodyContents() 来获取正文内容的 XML 表示,除非您知道正文的类型,否则您可以使用 GetBody<>。尝试使用这些来获取字符串,然后在需要时对其进行解码。您可以执行以下操作:

byte[] encodedMessageAsBytes = System.Convert.FromBase64String(requestString);

string message = System.Text.Encoding.Unicode.GetString(encodedMessageAsBytes);

从那里您可以从字符串中重建 xml

编辑:回答评论的最后一部分,内容类型应该是:text/xml

于 2012-09-04T13:22:02.163 回答