本文共 8026 字，大约阅读时间需要 26 分钟。
实现代码来源于网络，我只是作了一些修改！
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 | using System; using System.Web; using System.Xml; using System.Collections; using System.Net; using System.Text; using System.IO; using System.Xml.Serialization; /// <summary> /// 利用WebRequest/WebResponse进行WebService调用的类 /// </summary> public class WebServiceHelper { //<webServices> // <protocols> // <add name="HttpGet"/> // <add name="HttpPost"/> // </protocols> //</webServices> private static Hashtable _xmlNamespaces = new Hashtable(); //缓存xmlNamespace，避免重复调用GetNamespace /// <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, 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> /// 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, String MethodName, Hashtable Pars) { if (_xmlNamespaces.ContainsKey(URL)) { return QuerySoapWebService(URL, MethodName, Pars, _xmlNamespaces[URL].ToString()); } else { return QuerySoapWebService(URL, MethodName, Pars, GetNamespace(URL)); } } /// <summary> /// 通用WebService调用(Soap) /// </summary> /// <param name="URL"></param> /// <param name="MethodName"></param> /// <param name="Pars"></param> /// <param name="XmlNs"></param> /// <returns></returns> private static XmlDocument QuerySoapWebService(String URL, String MethodName, 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; } /// <summary> /// 通过WebService的WSDL获取XML名称空间 /// </summary> /// <param name="URL"></param> /// <returns></returns> 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; } /// <summary> /// 动态生成SOP请求报文内容 /// </summary> /// <param name="Pars"></param> /// <param name="XmlNs"></param> /// <param name="MethodName"></param> /// <returns></returns> 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/\"></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); } /// <summary> /// 将对象转换成XML节点格式 /// </summary> /// <param name="o"></param> /// <returns></returns> 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WEB请求 /// </summary> /// <param name="request"></param> private static void SetWebRequest(HttpWebRequest request) { request.Credentials = CredentialCache.DefaultCredentials; request.Timeout = 10000; } /// <summary> /// 设置请求数据 /// </summary> /// <param name="request"></param> /// <param name="data"></param> private static void WriteRequestData(HttpWebRequest request, byte [] data) { request.ContentLength = data.Length; Stream writer = request.GetRequestStream(); writer.Write(data, 0, data.Length); writer.Close(); } /// <summary> /// 获取字符串的UTF8码字符串 /// </summary> /// <param name="Pars"></param> /// <returns></returns> private static byte [] EncodePars(Hashtable Pars) { return Encoding.UTF8.GetBytes(ParsToString(Pars)); } /// <summary> /// 将Hashtable转换成WEB请求键值对字符串 /// </summary> /// <param name="Pars"></param> /// <returns></returns> 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(); } /// <summary> /// 获取Webservice响应报文XML /// </summary> /// <param name="response"></param> /// <returns></returns> 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; } /// <summary> /// 设置XML文档版本声明 /// </summary> /// <param name="doc"></param> private static void AddDelaration(XmlDocument doc) { XmlDeclaration decl = doc.CreateXmlDeclaration( "1.0" , "utf-8" , null ); doc.InsertBefore(decl, doc.DocumentElement); } } |
以上是在不引用WEB服务的条件下动态调用WEB服务方法，如果该服务地址不确定或后期有可能会变动，则采用上述这些方法会比较好，当然如果服务地址不会出现变更的情况下，可以在VS中直接引用WEB服务，然后就可调用自动生成的SOAPClient类来调用相应的WEB服务方法，这样就简单很多，如下：
| 1 2 3 | avar client = new SmsService.wmgwSoapClient(); //wmgwSoapClient就是引用WEB服务后自动生成的类 string result = client.MongateSendSubmit(tuserId.Text, tpassword.Text, tpszMobis.Text, tpszMsg.Text, int .Parse(tiMobiCount.Text), tpszSubPort.Text, tMsgId.Text); |
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本文转自 梦在旅途 博客园博客，原文链接：http://www.cnblogs.com/zuowj/p/4267585.html ，如需转载请自行联系原作者