Dynamic webservice calls the interface and reads the resolution returned results

Dynamic webservice calls the interface and reads the resolution returned results

Webservice publishing generally uses the style of the web service descriptive language file. In the WSDL file, this webservice is exposed to external interfaces for use. Today, we will discuss in detail how to dynamically call and read the resolution returned results.

Here we will give you a specific example of dynamic webservice calling the interface and reading the returned results of parsing. This is very simple and the annotations are also very detailed. For more information, see.

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Using System; Using System. Collections; Using System. IO; Using System. Net; Using System. Text; Using System. Xml; Using System. Xml. Serialization; Namespace Hishop. Plugins { /// <Summary> /// Use WebRequest/WebResponse to call WebService /// </Summary> Public class WebServiceCaller { # Region Tip: Instructions for use // WebServices should support Get and Post calls. Add the following code in web. config: // <WebServices> // <Protocols> // <Add name = "HttpGet"/> // <Add name = "HttpPost"/> /// </Protocols> // </WebServices>   // Call example: // Hashtable ht = new Hashtable (); // Hashtable is the parameter set required by webservice. // Ht. Add ("str", "test "); // Ht. Add ("B", "true "); // XmlDocument xx = WebSvcCaller. QuerySoapWebService ("http: // localhost: 81/service. asmx", "HelloWorld", ht ); // MessageBox. Show (xx. OuterXml ); # Endregion   /// <Summary> /// WebService is required to support Post call /// </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> /// WebService is required to support Get call /// </Summary> Public static XmlDocument 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 ); Return ReadXmlResponse (request. GetResponse ()); }   /// <Summary> /// Common WebService call (Soap). The Pars parameter is a String-type parameter name and value. /// </Summary> Public static XmlDocument QuerySoapWebService (String URL, String MethodName, Hashtable Pars) { If (_ xmlNamespaces. ContainsKey (URL )) { Return QuerySoapWebService (URL, MethodName, Pars, _ xmlNamespaces [URL]. ToString ()); } Else { Return QuerySoapWebService (URL, MethodName, Pars, GetNamespace (URL )); } }   Private static XmlDocument QuerySoapWebService (String URL, String MethodName, Hashtable Pars, string XmlNs) { _ XmlNamespaces [URL] = XmlNs; // Add cache to improve efficiency HttpWebRequest request = (HttpWebRequest) HttpWebRequest. Create (URL ); Request. Method = "POST "; Request. ContentType = "text/xml; charsets = 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 = \" external "xmlns: xsd = \" http://www.w3.org/2001/XMLSchema\ "xmlns: soap = \" external "> </soap: envelope> "); AddDelaration (doc ); // XmlElement soapBody = doc. createElement_x_x ("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope "); XmlElement soapBody = doc. CreateElement ("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope "); // XmlElement soapMethod = doc. createElement_x_x (MethodName ); XmlElement soapMethod = doc. CreateElement (MethodName ); SoapMethod. SetAttribute ("xmlns", XmlNs ); Foreach (string k in Pars. Keys) { // XmlElement soapPar = doc. createElement_x_x (k ); 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> /// Set the credential and timeout /// </Summary> /// <Param name = "request"> </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, 0, 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 ("&"); } // Sb. Append (HttpUtility. UrlEncode (k) + "=" + HttpUtility. UrlEncode (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 (); // cache xmlNamespace to avoid repeated calls to GetNamespace } }

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// Call and read the resolution returned results   DataSet ds = new DataSet (); XmlNode xmlNode1; XmlDataDocument xd = new XmlDataDocument (); StringBuilder sb; Hashtable ht = new Hashtable (); Ht. Add ("xmlIn", "<Request> <MemCode> 001 </MemCode> </Request> "); XmlNode1 = Hishop. Plugins. WebServiceCaller. QuerySoapWebService ("http://xxx.xxxx.com/Service.asmx", "SinPointQuery", ht ); If (xmlNode1 = null) { Return; } String xmlstr = HttpUtility. HtmlDecode (xmlNode1.OuterXml ); Sb = new StringBuilder (xmlstr ); If (sb. ToString (). Equals ("")) { Return; } Xd. LoadXml (sb. ToString ()); Ds. ReadXml (new XmlNodeReader (xd )); // Ds can return the result set.

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