webservice的两种调用方式

如下

namespace ConsoleApplication1

{

class Program

{

static void Main(string[] args)

{

Hashtable ht = new Hashtable();

ht.Add("customer",new Customer { Id = 1 });

ht.Add("code",1);

var result = WebServiceCaller.QuerySoapWebService("http://localhost:49644/TestWebService.asmx","HelloWorld",ht);

        Uri uri = new Uri("http://localhost:49644/TestWebService.asmx");

        BasicHttpSecurityMode securitymode = uri.Scheme.Equals("https",StringComparison.InvariantCultureIgnoreCase) ? BasicHttpSecurityMode.Transport : BasicHttpSecurityMode.None;
        BasicHttpBinding binding2 = new BasicHttpBinding(securitymode);
        binding2.MaxReceivedMessageSize = int.MaxValue;
        binding2.Name = "TestWebServiceSoap";
        binding2.ReaderQuotas = new XmlDictionaryReaderQuotas() { MaxStringContentLength = int.MaxValue };

        CustomBinding binding = new CustomBinding();
        binding.Name = "TestWebServiceSoap12";
        binding.Elements.Add(new TextMessageEncodingBindingElement()
        {
            MessageVersion = MessageVersion.Soap12,ReaderQuotas = new XmlDictionaryReaderQuotas() { MaxStringContentLength = int.MaxValue }
        });
        binding.Elements.Add(new HttpTransportBindingElement());


        TestWebServiceSoapClient svc = new TestWebServiceSoapClient(binding,new EndpointAddress(uri));
        var str = svc.HelloWorld(new TestWebService.Customer() { Id = 1 },code: 1);
    }

}

public class Customer
{
    public int Id { get; set; }
}

/// <summary>
/// 利用WebRequest/WebResponse进行WebService调用的类
/// </summary>
public class WebServiceCaller
{
    #region Tip:使用说明
    //webServices 应该支持Get和Post调用，在web.config应该增加以下代码
    //<webServices>
    // <protocols>
    //  <add name="HttpGet"/&gt;
    //  <add name="HttpPost"/&gt;
    // </protocols>
    //</webServices>

    //调用示例：
    //Hashtable ht = new Hashtable(); //Hashtable 为webservice所需要的参数集
    //ht.Add("str","test");
    //ht.Add("b","true");
    //XmlDocument xx = WebSvcCaller.QuerySoapWebService("http://localhost:81/service.asmx",ht);
    //MessageBox.Show(xx.OuterXml);
    #endregion

    /// <summary>
    /// 需要WebService支持Post调用
    /// </summary>
    public static XmlDocument QueryPostWebService(String URL,String MethodName,Hashtable Pars)
    {
        HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL + "/" + MethodName);
        request.Method = "POST";
        request.ContentType = "application/x-www-form-urlencoded";
        SetWebRequest(request);
        byte[] data = EncodePars(Pars);
        WriteRequestData(request,data);
        return ReadXmlResponse(request.GetResponse());
    }

    /// <summary>
    /// 需要WebService支持Get调用
    /// </summary>
    public static XmlDocument QueryGetWebService(String URL,Hashtable Pars)
    {
        HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL + "/" + MethodName + "?" + ParsToString(Pars));
        request.Method = "GET";
        request.ContentType = "application/x-www-form-urlencoded";
        SetWebRequest(request);
        return ReadXmlResponse(request.GetResponse());
    }

    /// <summary>
    /// 通用WebService调用(Soap),参数Pars为String类型的参数名、参数值
    /// </summary>
    public static XmlDocument QuerySoapWebService(String URL,Hashtable Pars)
    {
        if (_xmlNamespaces.ContainsKey(URL))
        {
            return QuerySoapWebService(URL,MethodName,Pars,_xmlNamespaces[URL].ToString());
        }
        else
        {
            return QuerySoapWebService(URL,GetNamespace(URL));
        }
    }

    private static XmlDocument QuerySoapWebService(String URL,Hashtable Pars,string XmlNs)
    {
        _xmlNamespaces[URL] = XmlNs;//加入缓存，提高效率
        HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL);
        request.Method = "POST";
        request.ContentType = "text/xml; charset=utf-8";
        request.Headers.Add("SOAPAction",""" + XmlNs + (XmlNs.EndsWith("/") ? "" : "/") + MethodName + """);
        SetWebRequest(request);
        byte[] data = EncodeParsToSoap(Pars,XmlNs,MethodName);
        WriteRequestData(request,data);
        XmlDocument doc = new XmlDocument(),doc2 = new XmlDocument();
        doc = ReadXmlResponse(request.GetResponse());

        XmlNamespaceManager mgr = new XmlNamespaceManager(doc.NameTable);
        mgr.AddNamespace("soap","http://schemas.xmlsoap.org/soap/envelope/");
        String RetXml = doc.SelectSingleNode("//soap:Body/*/*",mgr).InnerXml;
        doc2.LoadXml("<root>" + RetXml + "</root>");
        AddDelaration(doc2);
        return doc2;
    }
    private static string GetNamespace(String URL)
    {
        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL + "?WSDL");
        SetWebRequest(request);
        WebResponse response = request.GetResponse();
        StreamReader sr = new StreamReader(response.GetResponseStream(),Encoding.UTF8);
        XmlDocument doc = new XmlDocument();
        doc.LoadXml(sr.ReadToEnd());
        sr.Close();
        return doc.SelectSingleNode("//@targetNamespace").Value;
    }

    private static byte[] EncodeParsToSoap(Hashtable Pars,String XmlNs,String MethodName)
    {
        XmlDocument doc = new XmlDocument();
        doc.LoadXml("<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"&gt;</soap:Envelope>");
        AddDelaration(doc);
        XmlElement soapBody = doc.CreateElement("soap","Body","http://schemas.xmlsoap.org/soap/envelope/");
        XmlElement soapMethod = doc.CreateElement(MethodName);
        soapMethod.SetAttribute("xmlns",XmlNs);
        foreach (string k in Pars.Keys)
        {
            XmlElement soapPar = doc.CreateElement(k);
            soapPar.InnerXml = ObjectToSoapXml(Pars[k]);
            soapMethod.AppendChild(soapPar);
        }
        soapBody.AppendChild(soapMethod);
        doc.DocumentElement.AppendChild(soapBody);
        return Encoding.UTF8.GetBytes(doc.OuterXml);
    }
    private static string ObjectToSoapXml(object o)
    {
        XmlSerializer mySerializer = new XmlSerializer(o.GetType());
        MemoryStream ms = new MemoryStream();
        mySerializer.Serialize(ms,o);
        XmlDocument doc = new XmlDocument();
        doc.LoadXml(Encoding.UTF8.GetString(ms.ToArray()));
        if (doc.DocumentElement != null)
        {
            return doc.DocumentElement.InnerXml;
        }
        else
        {
            return o.ToString();
        }
    }

    /// <summary>
    /// 设置凭证与超时时间
    /// </summary>
    /// <param name="request"&gt;</param>
    private static void SetWebRequest(HttpWebRequest request)
    {
        request.Credentials = CredentialCache.DefaultCredentials;
        request.Timeout = 10000;
    }

    private static void WriteRequestData(HttpWebRequest request,byte[] data)
    {
        request.ContentLength = data.Length;
        Stream writer = request.GetRequestStream();
        writer.Write(data,data.Length);
        writer.Close();
    }

    private static byte[] EncodePars(Hashtable Pars)
    {
        return Encoding.UTF8.GetBytes(ParsToString(Pars));
    }

    private static String ParsToString(Hashtable Pars)
    {
        StringBuilder sb = new StringBuilder();
        foreach (string k in Pars.Keys)
        {
            if (sb.Length > 0)
            {
                sb.Append("&amp;");
            }
            sb.Append(k + "=" + Pars[k].ToString());
        }
        return sb.ToString();
    }

    private static XmlDocument ReadXmlResponse(WebResponse response)
    {
        StreamReader sr = new StreamReader(response.GetResponseStream(),Encoding.UTF8);
        String retXml = sr.ReadToEnd();
        sr.Close();
        XmlDocument doc = new XmlDocument();
        doc.LoadXml(retXml);
        return doc;
    }

    private static void AddDelaration(XmlDocument doc)
    {
        XmlDeclaration decl = doc.CreateXmlDeclaration("1.0","utf-8",null);
        doc.InsertBefore(decl,doc.DocumentElement);
    }

    private static Hashtable _xmlNamespaces = new Hashtable();//缓存xmlNamespace，避免重复调用GetNamespace
}
}

（编辑：李大同）

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