webServices 应该支持Get和Post调用，在web.config应该增加以下代码

  1         #region Tip:使用说明
  2         //webServices 应该支持Get和Post调用，在web.config应该增加以下代码
  3         //<webServices>
  4         //  <protocols>
  5         //    <add name="HttpGet"/>
  6         //    <add name="HttpPost"/>
  7         //  </protocols>
  8         //</webServices>
  9 
 10         //调用示例：
 11         //Hashtable ht = new Hashtable();  //Hashtable 为webservice所需要的参数集
 12         //ht.Add("str", "test");
 13         //ht.Add("b", "true");
 14         //XmlDocument xx = WebSvcCaller.QuerySoapWebService("http://localhost:81/service.asmx", "HelloWorld", ht);
 15         //MessageBox.Show(xx.OuterXml);
 16         #endregion
 17 
 18         /// <summary>
 19         /// 需要WebService支持Post调用
 20         /// </summary>
 21         public static XmlDocument QueryPostWebService(string URL, string MethodName, Hashtable Pars)
 22         {
 23             HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL + "/" + MethodName);
 24             request.Method = "POST";
 25             request.ContentType = "application/x-www-form-urlencoded";
 26             SetWebRequest(request);
 27             byte[] data = EncodePars(Pars);
 28             WriteRequestData(request, data);
 29             return ReadXmlResponse(request.GetResponse());
 30         }
 31 
 32         /// <summary>
 33         /// 需要WebService支持Get调用
 34         /// </summary>
 35         public static XmlDocument QueryGetWebService(String URL, String MethodName, Hashtable Pars)
 36         {
 37             HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL + "/" + MethodName + "?" + ParsToString(Pars));
 38             request.Method = "GET";
 39             request.ContentType = "application/x-www-form-urlencoded";
 40             SetWebRequest(request);
 41             return ReadXmlResponse(request.GetResponse());
 42         }
 43 
 44         /// <summary>
 45         /// 通用WebService调用(Soap),参数Pars为String类型的参数名、参数值
 46         /// </summary>
 47         public static XmlDocument QuerySoapWebService(String URL, String MethodName, Hashtable Pars)
 48         {
 49             if (_xmlNamespaces.ContainsKey(URL))
 50             {
 51                 return QuerySoapWebService(URL, MethodName, Pars, _xmlNamespaces[URL].ToString());
 52             }
 53             else
 54             {
 55                 return QuerySoapWebService(URL, MethodName, Pars, GetNamespace(URL));
 56             }
 57         }
 58 
 59         private static XmlDocument QuerySoapWebService(String URL, String MethodName, Hashtable Pars, string XmlNs)
 60         {
 61             _xmlNamespaces[URL] = XmlNs;//加入缓存，提高效率
 62             HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL);
 63             request.Method = "POST";
 64             request.ContentType = "text/xml; charset=utf-8";
 65             request.Headers.Add("SOAPAction", "\"" + XmlNs + (XmlNs.EndsWith("/") ? "" : "/") + MethodName + "\"");
 66             SetWebRequest(request);
 67             byte[] data = EncodeParsToSoap(Pars, XmlNs, MethodName);
 68             WriteRequestData(request, data);
 69             XmlDocument doc = new XmlDocument(), doc2 = new XmlDocument();
 70             doc = ReadXmlResponse(request.GetResponse());
 71 
 72             XmlNamespaceManager mgr = new XmlNamespaceManager(doc.NameTable);
 73             mgr.AddNamespace("soap", "http://schemas.xmlsoap.org/soap/envelope/");
 74             String RetXml = doc.SelectSingleNode("//soap:Body/*/*", mgr).InnerXml;
 75             doc2.LoadXml("<root>" + RetXml + "</root>");
 76             AddDelaration(doc2);
 77             return doc2;
 78         }
 79         private static string GetNamespace(String URL)
 80         {
 81             HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL + "?WSDL");
 82             SetWebRequest(request);
 83             WebResponse response = request.GetResponse();
 84             StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
 85             XmlDocument doc = new XmlDocument();
 86             doc.LoadXml(sr.ReadToEnd());
 87             sr.Close();
 88             return doc.SelectSingleNode("//@targetNamespace").Value;
 89         }
 90 
 91         private static byte[] EncodeParsToSoap(Hashtable Pars, String XmlNs, String MethodName)
 92         {
 93             XmlDocument doc = new XmlDocument();
 94             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>");
 95             AddDelaration(doc);
 96             //XmlElement soapBody = doc.createElement_x_x("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope/");
 97             XmlElement soapBody = doc.CreateElement("soap", "Body", "http://schemas.xmlsoap.org/soap/envelope/");
 98             //XmlElement soapMethod = doc.createElement_x_x(MethodName);
 99             XmlElement soapMethod = doc.CreateElement(MethodName);
100             soapMethod.SetAttribute("xmlns", XmlNs);
101             foreach (string k in Pars.Keys)
102             {
103                 //XmlElement soapPar = doc.createElement_x_x(k);
104                 XmlElement soapPar = doc.CreateElement(k);
105                 soapPar.InnerXml = ObjectToSoapXml(Pars[k]);
106                 soapMethod.AppendChild(soapPar);
107             }
108             soapBody.AppendChild(soapMethod);
109             doc.DocumentElement.AppendChild(soapBody);
110             return Encoding.UTF8.GetBytes(doc.OuterXml);
111         }
112         private static string ObjectToSoapXml(object o)
113         {
114             XmlSerializer mySerializer = new XmlSerializer(o.GetType());
115             MemoryStream ms = new MemoryStream();
116             mySerializer.Serialize(ms, o);
117             XmlDocument doc = new XmlDocument();
118             doc.LoadXml(Encoding.UTF8.GetString(ms.ToArray()));
119             if (doc.DocumentElement != null)
120             {
121                 return doc.DocumentElement.InnerXml;
122             }
123             else
124             {
125                 return o.ToString();
126             }
127         }
128 
129         /// <summary>
130         /// 设置凭证与超时时间
131         /// </summary>
132         /// <param name="request"></param>
133         private static void SetWebRequest(HttpWebRequest request)
134         {
135             request.Credentials = CredentialCache.DefaultCredentials;
136             request.Timeout = 10000;
137         }
138 
139         private static void WriteRequestData(HttpWebRequest request, byte[] data)
140         {
141             request.ContentLength = data.Length;
142             Stream writer = request.GetRequestStream();
143             writer.Write(data, 0, data.Length);
144             writer.Close();
145         }
146 
147         private static byte[] EncodePars(Hashtable Pars)
148         {
149             return Encoding.UTF8.GetBytes(ParsToString(Pars));
150         }
151 
152         private static String ParsToString(Hashtable Pars)
153         {
154             StringBuilder sb = new StringBuilder();
155             foreach (string k in Pars.Keys)
156             {
157                 if (sb.Length > 0)
158                 {
159                     sb.Append("&");
160                 }
161                 //sb.Append(HttpUtility.UrlEncode(k) + "=" + HttpUtility.UrlEncode(Pars[k].ToString()));
162             }
163             return sb.ToString();
164         }
165 
166         private static XmlDocument ReadXmlResponse(WebResponse response)
167         {
168             StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
169             String retXml = sr.ReadToEnd();
170             sr.Close();
171             XmlDocument doc = new XmlDocument();
172             doc.LoadXml(retXml);
173             return doc;
174         }
175 
176         private static void AddDelaration(XmlDocument doc)
177         {
178             XmlDeclaration decl = doc.CreateXmlDeclaration("1.0", "utf-8", null);
179             doc.InsertBefore(decl, doc.DocumentElement);
180         }
181 
182         private static Hashtable _xmlNamespaces = new Hashtable();//缓存xmlNamespace，避免重复调用GetNamespace