C # calls WebService through HttpWebRequest in the background

Call WebService through HttpWebRequest in the background

Http://www.cnblogs.com/macroxu-1982/archive/2009/12/23/1630415.html

http://www.oschina.net/code/snippet_188227_8068

usingSystem;usingsystem.web;usingSystem.Xml;usingSystem.Collections;usingSystem.Net;usingSystem.Text;usingSystem.IO;usingSystem.Xml.Serialization;//by Huangz 2008-3-19  /// <summary>///classes that use Webrequest/webresponse for webservice calls/// </summary> Public classwebsvccaller{//<webServices>//<protocols>//<add name= "HttpGet"/>//<add name= "HttpPost"/>//</protocols>//</webServices>     Private StaticHashtable _xmlnamespaces =NewHashtable ();//Cache XmlNamespace To avoid repeated calls to GetNamespace         /// <summary>    ///requires WebService support for post calls/// </summary>     Public StaticXmlDocument 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); returnReadxmlresponse (Request.    GetResponse ()); }        /// <summary>    ///requires webservice support for get calls/// </summary>     Public StaticXmlDocument Querygetwebservice (String URL, String MethodName, Hashtable Pars) {HttpWebRequest Request = (HttpWebRequest) httpwebrequest.create (URL +"/"+ MethodName +"?"+parstostring (Pars)); Request. Method="GET"; Request. ContentType="application/x-www-form-urlencoded";        Setwebrequest (Request); returnReadxmlresponse (Request.    GetResponse ()); }          /// <summary>    ///Universal WebService Call (SOAP), parameter pars is a string type parameter name, parameter value/// </summary>     Public StaticXmlDocument Querysoapwebservice (String URL, String MethodName, Hashtable Pars) {if(_xmlnamespaces.containskey (URL)) {returnQuerysoapwebservice (URL, MethodName, Pars, _xmlnamespaces[url].        ToString ()); }        Else        {            returnquerysoapwebservice (URL, MethodName, Pars, GetNamespace (URL)); }    }     Private StaticXmlDocument Querysoapwebservice (String URL, String MethodName, Hashtable Pars,stringXmlNs) {_xmlnamespaces[url]= XmlNs;//add cache to increase efficiencyHttpWebRequest 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=NewXmlDocument (), doc2 =NewXmlDocument (); Doc=Readxmlresponse (Request.         GetResponse ()); XmlNamespaceManager Mgr=NewXmlNamespaceManager (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); returndoc2; }    Private Static stringGetNamespace (String URL) {HttpWebRequest Request= (HttpWebRequest) webrequest.create (URL +"? WSDL");        Setwebrequest (Request); WebResponse response=request.        GetResponse (); StreamReader SR=NewStreamReader (response.        GetResponseStream (), Encoding.UTF8); XmlDocument Doc=NewXmlDocument (); Doc. LoadXml (Sr.        ReadToEnd ()); Sr.        Close (); returnDoc. selectSingleNode ("//@targetNamespace").    Value; }    Private Static byte[] Encodeparstosoap (Hashtable Pars, String XmlNs, String MethodName) {XmlDocument doc=NewXmlDocument (); 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/\ "></soap:Envelope>");        Adddelaration (DOC); XmlElement Soapbody= Doc.createelement_x_x ("Soap","Body","http://schemas.xmlsoap.org/soap/envelope/"); XmlElement Soapmethod=doc.createelement_x_x (MethodName); Soapmethod.setattribute ("xmlns", XmlNs); foreach(stringKinchpars.keys) {XmlElement Soappar=doc.createelement_x_x (k); Soappar.innerxml=Objecttosoapxml (Pars[k]);        SOAPMETHOD.APPENDCHILD_XSS (Soappar);        } SOAPBODY.APPENDCHILD_XSS (Soapmethod); Doc.        DOCUMENTELEMENT.APPENDCHILD_XSS (Soapbody); returnEncoding.UTF8.GetBytes (Doc.    OuterXml); }    Private Static stringObjecttosoapxml (Objecto) {XmlSerializer myserializer=NewXmlSerializer (O.gettype ()); MemoryStream Ms=NewMemoryStream ();        Myserializer.serialize (MS, O); XmlDocument Doc=NewXmlDocument (); Doc. LOADXML (Encoding.UTF8.GetString (Ms.        ToArray ())); if(Doc. DocumentElement! =NULL)        {            returnDoc.        Documentelement.innerxml; }        Else        {            returno.tostring (); }    }    Private Static voidsetwebrequest (HttpWebRequest request) {request. Credentials=CredentialCache.DefaultCredentials; Request. Timeout=10000; }     Private Static voidWriterequestdata (HttpWebRequest request,byte[] data) {Request. ContentLength=data.        Length; Stream writer=request.        GetRequestStream (); Writer. Write (data,0, data.        Length); Writer.    Close (); }     Private Static byte[] Encodepars (Hashtable Pars) {returnEncoding.UTF8.GetBytes (parstostring (Pars)); }     Private StaticString parstostring (Hashtable Pars) {StringBuilder sb=NewStringBuilder (); foreach(stringKinchPars.keys) {if(sb.) Length >0) {sb. Append ("&"); }            //sb. Append (Httputility.urlencode (k) + "=" + Httputility.urlencode (Pars[k]. ToString ()));        }        returnsb.    ToString (); }     Private StaticXmlDocument Readxmlresponse (WebResponse response) {StreamReader SR=NewStreamReader (response.        GetResponseStream (), Encoding.UTF8); String Retxml=Sr.        ReadToEnd (); Sr.        Close (); XmlDocument Doc=NewXmlDocument (); Doc.        LOADXML (Retxml); returnDoc; }     Private Static voidadddelaration (XmlDocument doc) {XmlDeclaration decl= Doc. Createxmldeclaration ("1.0","Utf-8",NULL); Doc. InsertBefore (Decl, Doc.    DocumentElement); }} Call Example: Hashtable HT=NewHashtable (); Ht. ADD ("Str","Test"); Ht. ADD ("b","true"); XmlDocument xx= Websvccaller.querysoapwebservice ("Http://localhost:81/service.asmx","HelloWorld", HT); MessageBox.Show (xx. OuterXml);

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C # calls WebService through HttpWebRequest in the background