解析复杂的 WSDL 参数信息

Parse Complex WSDL Parameter Information(解析复杂的 WSDL 参数信息)

问题描述

我正在尝试解析 WSDL，按照给出的示例 这里.

I am attempting to parse WSDL, along the lines of the example given here.

作者在评论中指出，该示例无法深入研究复杂的数据类型.

The author notes, in the comments, that the example is not capable of drilling down into complex data types.

事实上，当我运行该示例时，它似乎甚至无法处理简单的数据类型.

And in fact, when I run the example, it does not appear to even handle simple data types.

我在示例中使用的 System.Web.Services.Description.ServiceDescription 类中四处寻找，但在运行时找不到任何实际参数或返回类型信息.我知道我可能需要手动解析 xsd 文件?

I have poked around in System.Web.Services.Description.ServiceDescription class, which is used in the example, but cannot find any actual parameter or return type information at run-time. I gather that I may need to do some manual parsing of an xsd file?

google 和 stackoverflow 似乎都缺乏如何以编程方式深入研究复杂类型的完整示例，所以......我应该怎么做?

Both google and stackoverflow appear to lack a complete example of how to drill down into complex types programmatically, so... how should I do this?

推荐答案

这并不漂亮 - 但它完成了工作(希望;).我将此代码部分基于您提供的链接，然后添加了一些递归来解析架构中包含的不同类型，以及内部元素及其数据类型.这绝对没有考虑到 XML 模式中的所有可能性，但我认为它足以说明您可以在必要时增加复杂性.

This is not pretty - but it gets the job done (hopefully ;). I based this code partly on the link you provided, and then added some recursion to parse out the different types included in the schema, as well as the inner elements and their data types. This definitely does not take into account all possiblities in an XML schema, but I think it exemplifies enough that you could add complexity to this if neccessary.

希望对你有帮助！！！！

I hope this helps!!!!

internal class Program
{
    private static void Main(string[] args)
    {
        //Build the URL request string
        UriBuilder uriBuilder = new UriBuilder(@"http://digicomdev:8888/digitalOrderBroker/digitalOrderBroker.asmx");
        uriBuilder.Query = "WSDL";

        HttpWebRequest webRequest = (HttpWebRequest) WebRequest.Create(uriBuilder.Uri);
        webRequest.ContentType = "text/xml;charset="utf-8"";
        webRequest.Method = "GET";
        webRequest.Accept = "text/xml";

        //Submit a web request to get the web service's WSDL
        ServiceDescription serviceDescription;
        using (WebResponse response = webRequest.GetResponse())
        {
            using (Stream stream = response.GetResponseStream())
            {
                serviceDescription = ServiceDescription.Read(stream);
            }
        }

        //Loop through the port types in the service description and list all of the 
        //web service's operations and each operations input/output
        foreach (PortType portType in serviceDescription.PortTypes)
        {
            foreach (Operation operation in portType.Operations)
            {
                Console.Out.WriteLine(operation.Name);

                foreach (var message in operation.Messages)
                {
                    if (message is OperationInput)
                        Console.Out.WriteLine("Input Message: {0}", ((OperationInput) message).Message.Name);
                    if (message is OperationOutput)
                        Console.Out.WriteLine("Output Message: {0}", ((OperationOutput) message).Message.Name);

                    foreach (Message messagePart in serviceDescription.Messages)
                    {
                        if (messagePart.Name != ((OperationMessage) message).Message.Name) continue;

                        foreach (MessagePart part in messagePart.Parts)
                        {
                            Console.Out.WriteLine(part.Name);
                        }
                    }
                }
                Console.Out.WriteLine();
            }
        } //End listing of types

        //Drill down into the WSDL's complex types to list out the individual schema elements 
        //and their data types
        Types types = serviceDescription.Types;
        XmlSchema xmlSchema = types.Schemas[0];

        foreach (object item in xmlSchema.Items)
        {
            XmlSchemaElement schemaElement = item as XmlSchemaElement;
            XmlSchemaComplexType complexType = item as XmlSchemaComplexType;

            if (schemaElement != null)
            {
                Console.Out.WriteLine("Schema Element: {0}", schemaElement.Name);

                XmlSchemaType schemaType = schemaElement.SchemaType;
                XmlSchemaComplexType schemaComplexType = schemaType as XmlSchemaComplexType;

                if (schemaComplexType != null)
                {
                    XmlSchemaParticle particle = schemaComplexType.Particle;
                    XmlSchemaSequence sequence =
                        particle as XmlSchemaSequence;
                    if (sequence != null)
                    {
                        foreach (XmlSchemaElement childElement in sequence.Items)
                        {
                            Console.Out.WriteLine("    Element/Type: {0}:{1}", childElement.Name,
                                                  childElement.SchemaTypeName.Name);
                        }
                    }
                }
            }
            else if (complexType != null)
            {
                Console.Out.WriteLine("Complex Type: {0}", complexType.Name);
                OutputElements(complexType.Particle);
            }
            Console.Out.WriteLine();
        }

        Console.Out.WriteLine();
        Console.In.ReadLine();
    }

    private static void OutputElements(XmlSchemaParticle particle)
    {
        XmlSchemaSequence sequence = particle as XmlSchemaSequence;
        XmlSchemaChoice choice = particle as XmlSchemaChoice;
        XmlSchemaAll all = particle as XmlSchemaAll;

        if (sequence != null)
        {
            Console.Out.WriteLine("  Sequence");

            for (int i = 0; i < sequence.Items.Count; i++)
            {
                XmlSchemaElement childElement = sequence.Items[i] as XmlSchemaElement;
                XmlSchemaSequence innerSequence = sequence.Items[i] as XmlSchemaSequence;
                XmlSchemaChoice innerChoice = sequence.Items[i] as XmlSchemaChoice;
                XmlSchemaAll innerAll = sequence.Items[i] as XmlSchemaAll;

                if (childElement != null)
                {
                    Console.Out.WriteLine("    Element/Type: {0}:{1}", childElement.Name,
                                          childElement.SchemaTypeName.Name);                        
                }
                else OutputElements(sequence.Items[i] as XmlSchemaParticle);
            }
        }
        else if (choice != null)
        {
            Console.Out.WriteLine("  Choice");
            for (int i = 0; i < choice.Items.Count; i++)
            {
                XmlSchemaElement childElement = choice.Items[i] as XmlSchemaElement;
                XmlSchemaSequence innerSequence = choice.Items[i] as XmlSchemaSequence;
                XmlSchemaChoice innerChoice = choice.Items[i] as XmlSchemaChoice;
                XmlSchemaAll innerAll = choice.Items[i] as XmlSchemaAll;

                if (childElement != null)
                {
                    Console.Out.WriteLine("    Element/Type: {0}:{1}", childElement.Name,
                                          childElement.SchemaTypeName.Name);
                }
                else OutputElements(choice.Items[i] as XmlSchemaParticle);
            }

            Console.Out.WriteLine();
        }
        else if (all != null)
        {
            Console.Out.WriteLine("  All");
            for (int i = 0; i < all.Items.Count; i++)
            {
                XmlSchemaElement childElement = all.Items[i] as XmlSchemaElement;
                XmlSchemaSequence innerSequence = all.Items[i] as XmlSchemaSequence;
                XmlSchemaChoice innerChoice = all.Items[i] as XmlSchemaChoice;
                XmlSchemaAll innerAll = all.Items[i] as XmlSchemaAll;

                if (childElement != null)
                {
                    Console.Out.WriteLine("    Element/Type: {0}:{1}", childElement.Name,
                                          childElement.SchemaTypeName.Name);
                }
                else OutputElements(all.Items[i] as XmlSchemaParticle);
            }
            Console.Out.WriteLine();
        }
    }
}

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