c# - 使用自定义类型通过 WSDL 反射(reflect) ASMX

Question

我需要通过 WSDL 反射(reflect) ASMX 网络服务。使用 this 的公认答案，简单的案例都很好.但是我在那里定义了一些复杂类型(强类型数据集)。服务的原始来源看起来像

[WebMethod]
public int GetCustomer(string civicRegistrationNo, out MyCompany.E_WebServices.DataSets.CustomerDataSet customerDS)

这个 CustomerDataSet 给我带来了麻烦，因为在反射中方法是这样的

GetCustomer [Int32]: civicRegistrationNo [String], customerDS [out XmlElement]

而我希望看到的(以及如果我直接反射(reflect) DLL 会出现什么)是

GetCustomer [Int32]: civicRegistrationNo [String], customerDS [out CustomerDataSet]

我应该如何改进我的代码(如下)以正确获取类型 CustomerDataSet(而不是 XmlElement)？肯定和WSDL中的这个block有关系

<s:import namespace="http://tempuri.org/CustomerDataSet.xsd"/>
<s:import schemaLocation="http://localhost/E-WebServices/WSCustomer.asmx?schema=CustomerDataSet" namespace="http://tempuri.org/CustomerDataSet.xsd"/>

是的，如果我打开，我可以在浏览器中看到该定义

http://localhost/E-WebServices/WSCustomer.asmx?schema=CustomerDataSet

但是如何从下面的代码中获取它呢？

var client = new System.Net.WebClient();
var stream = client.OpenRead("http://localhost/E-WebServices/WSCustomer.asmx?wsdl");
var description = ServiceDescription.Read(stream);
var importer = new ServiceDescriptionImporter();
importer.ProtocolName = "Soap12";
importer.AddServiceDescription(description, null, null);
importer.Style = ServiceDescriptionImportStyle.Client;
importer.CodeGenerationOptions = CodeGenerationOptions.GenerateProperties;
var nmspace = new CodeNamespace();
var unit1 = new CodeCompileUnit();
unit1.Namespaces.Add(nmspace);
var warning = importer.Import(nmspace, unit1);
if (warning == 0)
{
    CodeDomProvider provider1 = CodeDomProvider.CreateProvider("CSharp");
    string[] assemblyReferences = new string[5] { "System.dll", "System.Web.Services.dll", "System.Web.dll", "System.Xml.dll", "System.Data.dll" };
    CompilerParameters parms = new CompilerParameters(assemblyReferences);
    CompilerResults results = provider1.CompileAssemblyFromDom(parms, unit1);
    if (results.Errors.Count > 0)
    {
        foreach (CompilerError oops in results.Errors)
            Debug.WriteLine(oops.ErrorText);
        throw new Exception("Compile Error Occured calling webservice");
    }
    object service = results.CompiledAssembly.CreateInstance("WSCustomer");
    List<MethodInfo> methods = service.GetType().GetMethods().ToList();
    // use them somehow
}

我有点受到 Visual Studio 本身的启发 - 如果添加了 web 引用，它只有 WSDL(我认为它不会直接转到该 DLL，即使它在同一台机器上)，但是它可以很好地导出包含的类型。所以我认为这一定是可能的!？

Answer 1

好吧，看来我成功了(也许不是最干净的方式)

string serviceUrl = "http://localhost/E-WebServices/WSCustomer.asmx";
var client = new WebClient();
ServiceDescription descr;
using (var stream = client.OpenRead(serviceUrl + "?wsdl"))
{
    descr = ServiceDescription.Read(stream);
}
var importer = new ServiceDescriptionImporter()
{
    ProtocolName = "Soap12",
    Style = ServiceDescriptionImportStyle.Client,
    CodeGenerationOptions = CodeGenerationOptions.GenerateProperties,
};
importer.AddServiceDescription(descr, null, null);
// Add any imported schemas
var importedSchemas = new List<string>();
foreach (XmlSchema wsdlSchema in descr.Types.Schemas)
{
    foreach (XmlSchemaObject externalSchema in wsdlSchema.Includes)
    {
        if (externalSchema is XmlSchemaImport)
        {
            XmlSchemaImport schemaImport = externalSchema as XmlSchemaImport;
            var split = schemaImport.Namespace.Split(new char[] { '/', '.' });
            string schemaId = split[split.Count() - 2];
            if (importedSchemas.Contains(schemaId))
                continue;
            importedSchemas.Add(schemaId);
            Uri schemaUri = new Uri(serviceUrl + "?schema=" + schemaId);
            XmlSchema schema;
            using (var wsdlStream = client.OpenRead(schemaUri))
            {
                schema = XmlSchema.Read(wsdlStream, null);
            }
            importer.Schemas.Add(schema);
        }
    }
}
var nmspace = new CodeNamespace();
var unit1 = new CodeCompileUnit();
unit1.Namespaces.Add(nmspace);
var warning = importer.Import(nmspace, unit1);
if (warning == 0)
{
    CodeDomProvider provider1 = CodeDomProvider.CreateProvider("CSharp");
    string[] assemblyReferences = new string[5] { "System.dll", "System.Web.Services.dll", "System.Web.dll", "System.Xml.dll", "System.Data.dll" };
    CompilerParameters parms = new CompilerParameters(assemblyReferences);
    CompilerResults results = provider1.CompileAssemblyFromDom(parms, unit1);
    if (results.Errors.Count > 0)
    {
        foreach (CompilerError oops in results.Errors)
            Debug.WriteLine(oops.ErrorText);
        throw new Exception("Compile Error Occured calling webservice");
    }
    object service = results.CompiledAssembly.CreateInstance("WSCustomer");
    Type t = service.GetType();
    List<MethodInfo> methods = t.GetMethods().ToList();
    // use them somehow
}