C#如何从服务引用（wsdl导入）中获取soap XML？

Question

我得到了一个 wsdl 文件，我将它添加为 Visual Studio 中的服务参考。

我现在可以创建一个新的服务客户端，然后执行肥皂操作没有问题。

但是在 C# 中，我只需要获取它生成的用于执行操作的 soap 请求 XML 并将其存储在一个变量中，而不是实际将其发送到 Web 服务。

这可能吗？我尝试只是将类序列化为 xml，但结果与预期的肥皂请求 xml 有点不同。

Answer 1

我仍在研究此问题，但最好的办法是创建 Web 服务参考的部分类。

在 Visual Studio 解决方案资源管理器中（选中您的项目），单击“显示所有文件”图标，这将允许您展开 Web 服务，直到找到名为 Reference.cs 的文件（它位于 Reference.map 节点下） .

这个类将被标记为 partial 并继承自 SoapHttpClientProtocol，这应该让您可以访问一些有趣的属性和方法等。

我会在完成探索后尽快更新此答案。

希望对你有帮助！

更新； 我发现这篇很有帮助的文章，我认为可以解决问题；

http://orbinary.com/blog/2010/01/getting-the-raw-soap-xml-sent-via-soaphttpclientprotocol/

您可以使用下面的类来实现 XmlWriterSpy；

public class XmlWriterSpy : XmlWriter
{
    private readonly XmlWriter _originalWriter;
    private readonly XmlTextWriter _buffer;
    private readonly StringWriter _sw;

    public XmlWriterSpy(XmlWriter originalWriter)
    {
        _originalWriter = originalWriter;

        _sw = new StringWriter();

        _buffer = new XmlTextWriter(_sw)
        {
            Formatting = Formatting.Indented
        };
    }

    public override void Flush()
    {
        _originalWriter.Flush();
        _buffer.Flush();
        _sw.Flush();
    }

    public string Xml => _sw?.ToString();

    public override WriteState WriteState => _originalWriter.WriteState;

    public override void Close() { _originalWriter.Close(); _buffer.Close(); }

    public override string LookupPrefix(string ns) { return _originalWriter.LookupPrefix(ns); }

    public override void WriteRaw(string data)
    {
        _originalWriter.WriteRaw(data);
        _buffer.WriteRaw(data);
    }

    public override void WriteBase64(byte[] buffer, int index, int count)
    {
        _originalWriter.WriteBase64(buffer, index, count);
        _buffer.WriteBase64(buffer, index, count);
    }


    public override void WriteString(string text)
    {
        _originalWriter.WriteString(text);
        _buffer.WriteString(text);
    }

    public override void WriteSurrogateCharEntity(char lowChar, char highChar)
    {
        _originalWriter.WriteSurrogateCharEntity(lowChar, highChar);
        _buffer.WriteSurrogateCharEntity(lowChar, highChar);
    }
    public override void WriteChars(char[] buffer, int index, int count)
    {
        _originalWriter.WriteChars(buffer, index, count);
        _buffer.WriteChars(buffer, index, count);
    }

    public override void WriteRaw(char[] buffer, int index, int count)
    {
        _originalWriter.WriteRaw(buffer, index, count);
        _buffer.WriteRaw(buffer, index, count);
    }

    public override void WriteStartDocument()
    {
        _originalWriter.WriteStartDocument();
        _buffer.WriteStartDocument();
    }

    public override void WriteStartDocument(bool standalone)
    {
        _originalWriter.WriteStartDocument(standalone);
        _buffer.WriteStartDocument(standalone);
    }

    public override void WriteEndDocument()
    {
        _originalWriter.WriteEndDocument();
        _buffer.WriteEndDocument();
    }

    public override void WriteDocType(string name, string pubid, string sysid, string subset)
    {
        _originalWriter.WriteDocType(name, pubid, sysid, subset);
        _buffer.WriteDocType(name, pubid, sysid, subset);
    }

    public override void WriteStartElement(string prefix, string localName, string ns)
    {
        _originalWriter.WriteStartElement(prefix, localName, ns);
        _buffer.WriteStartElement(prefix, localName, ns);
    }

    public override void WriteEndElement()
    {
        _originalWriter.WriteEndElement();
        _buffer.WriteEndElement();
    }

    public override void WriteFullEndElement()
    {
        _originalWriter.WriteFullEndElement();
        _buffer.WriteFullEndElement();
    }

    public override void WriteStartAttribute(string prefix, string localName, string ns)
    {
        _originalWriter.WriteStartAttribute(prefix, localName, ns);
        _buffer.WriteStartAttribute(prefix, localName, ns);
    }

    public override void WriteEndAttribute()
    {
        _originalWriter.WriteEndAttribute();
        _buffer.WriteEndAttribute();
    }

    public override void WriteCData(string text)
    {
        _originalWriter.WriteCData(text);
        _buffer.WriteCData(text);
    }

    public override void WriteComment(string text)
    {
        _originalWriter.WriteComment(text);
        _buffer.WriteComment(text);
    }

    public override void WriteProcessingInstruction(string name, string text)
    {
        _originalWriter.WriteProcessingInstruction(name, text);
        _buffer.WriteProcessingInstruction(name, text);
    }

    public override void WriteEntityRef(string name)
    {
        _originalWriter.WriteEntityRef(name);
        _buffer.WriteEntityRef(name);
    }

    public override void WriteCharEntity(char ch)
    {
        _originalWriter.WriteCharEntity(ch);
        _buffer.WriteCharEntity(ch);
    }

    public override void WriteWhitespace(string ws)
    {
        _originalWriter.WriteWhitespace(ws);
        _buffer.WriteWhitespace(ws);
    }
}

然后你只需要继承代理生成的类，如下所示；

public class MyHelloService : HelloService
{

    private XmlWriterSpy _xmlSpy;

    public MyHelloService() : base() { }

    protected override XmlWriter GetWriterForMessage(SoapClientMessage message, int bufferSize)
    {
        _xmlSpy = new XmlWriterSpy(base.GetWriterForMessage(message, bufferSize));
        return _xmlSpy;
    }

    public string Xml => _xmlSpy?.Xml;
}