不通过“添加引用服务”调用WebService接口

来源：互联网发布：由深入浅mysql中文网盘编辑：程序博客网时间：2024/06/05 08:14

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, 0, 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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