C# httpRequest Soap请求
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一般添加web服务引用是.NET用代理类模式 创建SOAP请求代理类,代理类是.NET开发工具VS自动给你生成。
下面用一般HTTP的模式有时候可能更合适,原理是构造SOAP请求的XML后POST过去:
下面是HelloWorld的例子
private void button1_Click(object sender, EventArgs e) { //创建HttpWebRequest 实例,使用WebRequest.Create HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create("http://localhost:1198/WebSite1/Service.asmx"); //发送请求 webRequest.Method = "POST"; //编码 webRequest.ContentType = "text/xml"; string soap = "<?xml version=\"1.0\" encoding=\"utf-8\"?>"; soap += "<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 += " <soap:Header>"; soap += " </soap:Header>"; soap += "<soap:Body>"; soap += " <HelloWorld xmlns=\"http://tempuri.org/\" />"; soap += "</soap:Body>"; soap += "</soap:Envelope>"; // webRequest.Headers["SoapAction"] = "http://localhost:1198/WebSite1/Service.asmx"; //字符转字节 byte[] bytes = Encoding.UTF8.GetBytes(soap); Stream writer = webRequest.GetRequestStream(); writer.Write(bytes, 0, bytes.Length); writer.Flush(); writer.Close(); string result = ""; //返回 HttpWebResponse try { HttpWebResponse hwRes = webRequest.GetResponse() as HttpWebResponse; if (hwRes.StatusCode == System.Net.HttpStatusCode.OK) {//是否返回成功 Stream rStream = hwRes.GetResponseStream(); //流读取 StreamReader sr = new StreamReader(rStream, Encoding.UTF8); result = sr.ReadToEnd(); sr.Close(); rStream.Close(); } else { result = "连接错误"; } //关闭 hwRes.Close(); txtResponse.Text = result; } catch (System.Net.WebException ex) { String responseFromServer = ex.Message.ToString() + " "; if (ex.Response != null) { using (WebResponse response = ex.Response) { Stream data = response.GetResponseStream(); using (StreamReader reader = new StreamReader(data)) { responseFromServer += reader.ReadToEnd(); } } } txtResponse.Text = responseFromServer; } }
不错意外会返回如下:
<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><HelloWorldResponse xmlns="http://tempuri.org/"><HelloWorldResult>Hello World</HelloWorldResult></HelloWorldResponse></soap:Body></soap:Envelope>
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