有时候,在调用外网的服务时,例如Webservice服务,直接添加引用服务,有时候还要手动更新服务,比较不够智能,如果能只通过传入服务地址和参数就能获取数据,那就最好不过。
以下就是一个例子:
public static XElement WebCallRequestFunc(string paramXML) { try { System.Net.ServicePointManager.DefaultConnectionLimit = 200; System.Net.HttpWebRequest req = System.Net.HttpWebRequest.Create("*.asmx") as System.Net.HttpWebRequest;//回呼服务地址 System.Text.Encoding encoding = System.Text.Encoding.UTF8;//默认编码 string paras = string.Format("<s:Envelope xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\"><s:Header><h:SoapHeaderExt xmlns:h=\"http://tempuri.org/\" xmlns=\"http://tempuri.org/\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"><UserToken>{0}</UserToken></h:SoapHeaderExt></s:Header><s:Body xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"><ArticleGeneration xmlns=\"http://tempuri.org/\"><xml>{1}</xml></ArticleGeneration></s:Body></s:Envelope>","",paramXML);//xml格式参数 byte[] bs = System.Text.Encoding.UTF8.GetBytes(paras); req.Host = ""; req.Method = "POST"; req.UserAgent = "Mozilla-Firefox-Spider(Wenanry)"; req.Timeout = 30000; req.Headers.Add("SOAPAction","http://tempuri.org/ArticleGeneration"); req.Headers.Add("VsDebuggerCausalityData",""); //req.Headers.Add("Expect","100-continue"); //req.CookieContainer = new System.Net.CookieContainer(); //System.Net.CookieContainer cookie = new System.Net.CookieContainer();//如果用不到Cookie,删去即可 req.KeepAlive = true; //上面的http头看情况而定,但是下面俩必须加 req.ContentType = "text/xml;charset=utf-8"; req.ContentLength = bs.Length; using (System.IO.Stream reqStream = req.GetRequestStream()) { reqStream.Write(bs,bs.Length); reqStream.Close(); } string responseData = string.Empty;//返回数据 using (System.Net.HttpWebResponse response = (req.GetResponse() as System.Net.HttpWebResponse)) { //如果http头中接受gzip的话,这里就要判断是否为有压缩,有的话,直接解压缩即可 #region 读取内容 //req.CookieContainer.Add(response.Cookies); System.IO.Stream responseStream = response.GetResponseStream(); using (System.IO.StreamReader reader = new System.IO.StreamReader(responseStream,encoding)) { responseData = reader.ReadToEnd(); } if (!string.IsNullOrEmpty(responseData)) { //string decsponseData = Server.HtmlDecode(responseData); Regex reg = new Regex("<ArticleGenerationResult>.*</ArticleGenerationResult>",RegexOptions.IgnoreCase);//返回 MatchCollection matches = reg.Matches(responseData); XElement xmlDoc = null; if (matches.Count > 0) { xmlDoc = XElement.Parse(matches[0].Value); //如果是xml字符串,则用以下形式 } return xmlDoc; } else { return null; } #endregion }//using } catch (Exception ex) { return null; } }
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