Get web methods dynamically for an asmx service

问题

We have number of asmx services. I want to give an user a page with a textbox to input service url like http://abc.win.com/myservice/customerdata.asmx. When user hit "Load" button, dynamically I add all the web methods to the dropdown. I need some pointers: 1. How to dynamically get all the methods? 2. How can I get the SOAP request for the method selected? So that, we can replace the parameter values with actual values?

Appreciate your help.

回答1:

Kuul13 : You need to modify your webservice URL like http://abc.win.com/myservice/customerdata.asmx?wsdl when user clicks on load button. then you can use we "ServiceDescription" class to get wsdl description and then iterate that to get method names in 'WebMethodInfoCollection' class.

To get SOAP request you need to use SOAPExtension class.This will give you SOAP Request and Response XML.Refere this link for that : http://blog.encoresystems.net/articles/how-to-capture-soap-envelopes-when-consuming-a-web-service.aspx?www.microsoft.com

For dynamically calling webservice look a this V.Good article http://www.codeproject.com/KB/webservices/webservice_.aspx

Please reply me for any comment.

回答2:

System.Net.WebClient client = new System.Net.WebClient();
System.IO.Stream stream = client.OpenRead("http://www.webservicex.net/globalweather.asmx?wsdl");          
ServiceDescription description = ServiceDescription.Read(stream);  

ServiceDescriptionImporter importer = new ServiceDescriptionImporter();
importer.ProtocolName = "Soap12";  
importer.AddServiceDescription(description, null, null);  
importer.Style = ServiceDescriptionImportStyle.Client;     
importer.CodeGenerationOptions = System.Xml.Serialization.CodeGenerationOptions.GenerateProperties;

CodeNamespace nmspace = new CodeNamespace();
CodeCompileUnit unit1 = new CodeCompileUnit();
unit1.Namespaces.Add(nmspace);

ServiceDescriptionImportWarnings warning = importer.Import(nmspace, unit1);
if (warning == 0)
{              
    CodeDomProvider provider1 = CodeDomProvider.CreateProvider("CSharp");   

    string[] assemblyReferences = new string[2] { "System.Web.Services.dll", "System.Xml.dll" };
    CompilerParameters parms = new CompilerParameters(assemblyReferences);
    CompilerResults results = provider1.CompileAssemblyFromDom(parms, unit1);

    object[] args = new object[1];
    args[0] = "India";          

    object wsvcClass = results.CompiledAssembly.CreateInstance("GlobalWeather");
    MethodInfo mi = wsvcClass.GetType().GetMethod("GetCitiesByCountry");

    RegExpForCountryCity(mi.Invoke(wsvcClass, args).ToString());
}
else
{                
    Console.WriteLine("Warning: " + warning);
}


void RegExpForCountryCity(string strHTML)
{
    Regex qariRegex = new Regex(@"<Table>\s*<Country>(?<Country>[\s\S]*?)</Country>\s*<City>(?<City>[\s\S]*?)</City>\s*</Table>", RegexOptions.IgnoreCase | RegexOptions.Multiline);

    MatchCollection mc = qariRegex.Matches(strHTML);

    string strCountryCity = "";

    for (int i = 0; i < mc.Count; i++)
    {
        if (string.IsNullOrEmpty(strCountryCity))
            strCountryCity = "Country: " + "<b>" + mc[i].Groups["Country"].Value + "</b>" + " " + "City: " + "<b>" + mc[i].Groups["City"].Value + "</b>" + "</br>";
        else
            strCountryCity += "</br>" + "Country: " + "<b>" + mc[i].Groups["Country"].Value + "</b>" + " " + "City: " + "<b>" + mc[i].Groups["City"].Value + "</b>" + "</br>";
    }
    Response.Write(strCountryCity);
}

来源：https://stackoverflow.com/questions/5278905/get-web-methods-dynamically-for-an-asmx-service