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這篇文章主要介紹了C#中如何使用HttpPost調(diào)用WebService,具有一定借鑒價(jià)值,感興趣的朋友可以參考下,希望大家閱讀完這篇文章之后大有收獲,下面讓小編帶著大家一起了解一下。
WebService服務(wù)端代碼
public class WebServiceDemo : System.Web.Services.WebService { [WebMethod] public string HelloWorld() { return "Hello World"; } [WebMethod] public string Sum(string param1, string param2) { int num1 = Convert.ToInt32(param1); int num2 = Convert.ToInt32(param2); int sum = num1 + num2; return sum.ToString(); } }
客戶端調(diào)用代碼
class Program { static void Main(string[] args) { Program program = new Program(); string url = "http://localhost:12544/WebServiceDemo.asmx"; string method = "Sum"; string num1 = "1"; string num2 = "2"; string result = program.HttpPostWebService(url, method, num1, num2); Console.WriteLine(result); Console.ReadKey(); } public string HttpPostWebService(string url,string method,string num1,string num2) { string result = string.Empty; string param = string.Empty; byte[] bytes = null; Stream writer = null; HttpWebRequest request = null; HttpWebResponse response = null; param = HttpUtility.UrlEncode("param1") + "=" + HttpUtility.UrlEncode(num1) + "&" + HttpUtility.UrlEncode("param2") + "=" + HttpUtility.UrlEncode(num2); bytes = Encoding.UTF8.GetBytes(param); request = (HttpWebRequest)WebRequest.Create(url + "/" + method); request.Method = "POST"; request.ContentType = "application/x-www-form-urlencoded"; request.ContentLength = bytes.Length; try { writer = request.GetRequestStream(); //獲取用于寫入請(qǐng)求數(shù)據(jù)的Stream對(duì)象 } catch (Exception ex) { return ""; } writer.Write(bytes, 0, bytes.Length); //把參數(shù)數(shù)據(jù)寫入請(qǐng)求數(shù)據(jù)流 writer.Close(); try { response = (HttpWebResponse)request.GetResponse(); //獲得響應(yīng) } catch (WebException ex) { return ""; } #region 這種方式讀取到的是一個(gè)返回的結(jié)果字符串 Stream stream = response.GetResponseStream(); //獲取響應(yīng)流 XmlTextReader Reader = new XmlTextReader(stream); Reader.MoveToContent(); result = Reader.ReadInnerXml(); #endregion #region 這種方式讀取到的是一個(gè)Xml格式的字符串 //StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8); //result = reader.ReadToEnd(); #endregion response.Dispose(); response.Close(); //reader.Close(); //reader.Dispose(); Reader.Dispose(); Reader.Close(); stream.Dispose(); stream.Close(); return result; } }
如果遇到調(diào)用時(shí)報(bào)錯(cuò),可以嘗試在WebService的web.config配置文件中添加如下節(jié)點(diǎn)
<system.web> <webServices> <protocols> <add name="HttpPost" /> </protocols> </webServices> </system.web>
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