c# Get方式调用WebAPI,WebService等接口-编程知识

/// <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>/// <summary>/// 需要WebService支持Get调用/// </summary>public string QueryGetWebService(string URL, string MethodName, Hashtable Pars){string detilurl = URL + "/" + MethodName + "?" + ParsToString(Pars);HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(detilurl);request.Method = "GET";request.ContentType = "application/x-www-form-urlencoded";SetWebRequest(request);try{return ReadXmlResponseString(request.GetResponse());}catch (Exception ex){return "NG:"+ex.ToString();}}/// <summary>/// 针对信息解读(根据实际调整)/// </summary>public string GetReturnInnerMsg(string jsonStr){XmlDocument doc = new XmlDocument();doc.LoadXml(jsonStr);XmlNamespaceManager xmlnsManager = new XmlNamespaceManager(doc.NameTable);xmlnsManager.AddNamespace("ns", "http://wserver");XmlNode returnNode = doc.SelectSingleNode("//ns:return", xmlnsManager);if (returnNode != null){if (returnNode.InnerText.Contains(":")){return returnNode.InnerText.Replace(" ","").Split(':')[1];}return returnNode.InnerText;}else{return "";}}/// <summary>/// 设置WEB请求/// </summary>/// <param name="request"></param>private void SetWebRequest(HttpWebRequest request){request.Credentials = CredentialCache.DefaultCredentials;request.Timeout = 10000;}/// <summary>/// 将Hashtable转换成WEB请求键值对字符串/// </summary>/// <param name="Pars"></param>/// <returns></returns>private 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()));sb.Append(k+ "=" +Pars[k].ToString());}return sb.ToString();}private string ReadXmlResponseString(WebResponse response){StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);string retXml = sr.ReadToEnd();sr.Close();return retXml;}
}

接口无非就是拼接字符串发动到指定的网站

POST 与 Get 一样,改下参数就行

例如:

http://localhost:8080/axis2/services/AAAA/getVerifyCode?args0=abc

返回信息

<ns:getVerifyCodeResponse xmlns:ns="http://wserver">

<ns:return>C</ns:return>

</ns:getVerifyCodeResponse>

使用方法

WebServiceHelper webServiceHelper = new WebServiceHelper();

string url="http://localhost:8080/axis2/services/AAAA";

Hashtable ht = new Hashtable(); //创建一个Hashtable实例

//正式库
ht.Add("args0", "abc");

//发送数据
string msg = webServiceHelper.QueryGetWebService(url, "getVerifyCode", ht);
if (msg.Substring(0, 2)=="NG")
{
MessageForm mf = new MessageForm("总成,加密接口通信异常!", msg, true);
mf.ShowDialog();
return;

}

//接收反馈信息

string EnBarCode = webServiceHelper.GetReturnInnerMsg(msg);

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asmx 调用: 不推荐,每次使用都需要反射

天气的测试地址

WeatherWebService Web 服务http://www.webxml.com.cn/WebServices/WeatherWebService.asmxwsdl

http://www.webxml.com.cn/WebServices/WeatherWebService.asmx?wsdl

用方法一:

http://www.webxml.com.cn/WebServices/WeatherWebService.asmx/getSupportCity?byProvinceName=上海

方法二:

    /* 调用方式*   string url = "http://www.webservicex.net/globalweather.asmx" ;*   string[] args = new string[2] ;*   args[0] = "Hangzhou";*   args[1] = "China" ;*   object result = WebServiceHelper.InvokeWebService(url ,"GetWeather" ,args) ;*   Response.Write(result.ToString());*/class WebServiceHelper{#region InvokeWebService/// <summary>/// 动态调用web服务/// </summary>/// <param name="url">WSDL服务地址</param>/// <param name="methodname">方法名</param>/// <param name="args">参数</param>/// <returns></returns>public static object InvokeWebService(string url, string methodname, object[] args){return WebServiceHelper.InvokeWebService(url, null, methodname, args);}/// <summary>/// 动态调用web服务/// </summary>/// <param name="url">WSDL服务地址</param>/// <param name="classname">类名</param>/// <param name="methodname">方法名</param>/// <param name="args">参数</param>/// <returns></returns>public static object InvokeWebService(string url, string classname, string methodname, object[] args){string @namespace = "EnterpriseServerBase.WebService.DynamicWebCalling";if ((classname == null) || (classname == "")){classname = WebServiceHelper.GetWsClassName(url);}try{//获取WSDLWebClient wc = new WebClient();Stream stream = wc.OpenRead(url + "?WSDL");ServiceDescription sd = ServiceDescription.Read(stream);ServiceDescriptionImporter sdi = new ServiceDescriptionImporter();sdi.AddServiceDescription(sd, "", "");CodeNamespace cn = new CodeNamespace(@namespace);//生成客户端代理类代码CodeCompileUnit ccu = new CodeCompileUnit();ccu.Namespaces.Add(cn);sdi.Import(cn, ccu);CSharpCodeProvider icc = new CSharpCodeProvider();//设定编译参数CompilerParameters cplist = new CompilerParameters();cplist.GenerateExecutable = false;cplist.GenerateInMemory = true;cplist.ReferencedAssemblies.Add("System.dll");cplist.ReferencedAssemblies.Add("System.XML.dll");cplist.ReferencedAssemblies.Add("System.Web.Services.dll");cplist.ReferencedAssemblies.Add("System.Data.dll");//编译代理类CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu);if (true == cr.Errors.HasErrors){System.Text.StringBuilder sb = new System.Text.StringBuilder();foreach (System.CodeDom.Compiler.CompilerError ce in cr.Errors){sb.Append(ce.ToString());sb.Append(System.Environment.NewLine);}throw new Exception(sb.ToString());}//生成代理实例，并调用方法System.Reflection.Assembly assembly = cr.CompiledAssembly;Type t = assembly.GetType(@namespace + "." + classname, true, true);object obj = Activator.CreateInstance(t);System.Reflection.MethodInfo mi = t.GetMethod(methodname);return mi.Invoke(obj, args);/*PropertyInfo propertyInfo = type.GetProperty(propertyname);return propertyInfo.GetValue(obj, null);*/}catch (Exception ex){throw new Exception(ex.InnerException.Message, new Exception(ex.InnerException.StackTrace));}}private static string GetWsClassName(string wsUrl){string[] parts = wsUrl.Split('/');string[] pps = parts[parts.Length - 1].Split('.');return pps[0];}#endregion}

string url = "http://10.255.30.40:9003/LESPrepareDeliveryService.asmx";
//方法
string fuc = "getSpsMatDt";
//参数
string par = "3210;A1;NS001";
int Pcount = par.Split(';').Count() + 1;
//生成参数信息
string[] args = new string[Pcount];
for (int i = 0; i < Pcount - 1; i++)
{
args[i] = par.Split(';')[i];
}
args[Pcount - 1] = dtm;

//获取Webservice的数据信息
object result = WebServiceHelper.InvokeWebService(url, fuc, args);
DataTable dt = (DataTable)result;
return dt;