C#WebService 客户端通过Http调用请求（转）

1.webservice帮助类

public class WebServiceHelper
{
public static string CallServiceByGet(string strURL)
{

//创建一个HTTP请求
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strURL);
request.Method="get";
HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse();
Stream s = response.GetResponseStream();
//转化为XML，自己进行处理
XmlTextReader Reader = new XmlTextReader(s);
Reader.MoveToContent();
string strValue = Reader.ReadInnerXml();
Reader.Close();
strValue = strValue.Replace("<", "<");
strValue = strValue.Replace(">", ">");
return strValue;
}
public static string CallServiceByPost(string strURL,System.Collections.Specialized.StringDictionary parameters)
{
//创建一个HTTP请求
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strURL);
//Post请求方式
request.Method = "POST";
//内容类型
request.ContentType = "application/x-www-form-urlencoded";
//设置参数，并进行URL编码
StringBuilder codedString = new StringBuilder();
foreach (string key in parameters.Keys)
{
codedString.Append(HttpUtility.UrlEncode(key));
codedString.Append("=");
codedString.Append(HttpUtility.UrlEncode(parameters[key]));
codedString.Append("&");
}

string paraUrlCoded = codedString.Length == 0 ?
string.Empty:codedString.ToString().Substring(0, codedString.Length -
1);
//string paraUrlCoded = HttpUtility.UrlEncode("ProductId");
//paraUrlCoded += "=" + HttpUtility.UrlEncode(this.textBox1.Text);
byte[] payload;
//将URL编码后的字符串转化为字节
payload = System.Text.Encoding.UTF8.GetBytes(paraUrlCoded);
//设置请求的ContentLength
request.ContentLength = payload.Length;
//发送请求，获得请求流
Stream writer = request.GetRequestStream();
//将请求参数写入流
writer.Write(payload, 0, payload.Length);
//关闭请求流
writer.Close();
//获得响应流
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream s = response.GetResponseStream();
//转化为XML，自己进行处理
XmlTextReader Reader = new XmlTextReader(s);
Reader.MoveToContent();
string strValue = Reader.ReadInnerXml();
Reader.Close();
strValue = strValue.Replace("<", "<");
strValue = strValue.Replace(">", ">");
return strValue;
}
}

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2.webservice方法

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/// <summary>
/// Service1 的摘要说明
/// </summary>
[WebService(Namespace = "http://127.0.0.1/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ToolboxItem(false)]
public class Service1 : System.Web.Services.WebService
{

[WebMethod]
public string HelloWorld1()
{
return "Hello World";
}

[WebMethod]
public string HelloWorld2(string p1,string p2)
{
return string.Concat("Hello World", ",", p1, ",", p2);
}
[WebMethod]
public string HelloWorld3(string datetime)
{
return string.Concat("Hello World", " today is ", datetime);
}
}

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3.使用webservice帮助类调用webservice方法

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//带2个字符串参数的调用
string url = "http://localhost/ByDIF.WebService/Service.asmx/HelloWorld2";
StringDictionary parameters = new StringDictionary();
parameters.Add("p1","123");
parameters.Add("p2", "456");
string message = WebServiceHelper.CallServiceByPost(url,parameters);
System.Console.WriteLine(message);
//不带参数的调用
url = "http://localhost/ByDIF.WebService/Service.asmx/HelloWorld1";
parameters = new StringDictionary();
message = WebServiceHelper.CallServiceByPost(url, parameters);
System.Console.WriteLine(message);
//带一个日期字符串的调用
url = "http://localhost/ByDIF.WebService/Service.asmx/HelloWorld3";
parameters = new StringDictionary();
parameters.Add("datetime", System.DateTime.Now.ToShortDateString());
message = WebServiceHelper.CallServiceByPost(url, parameters);
System.Console.WriteLine(message);
System.Console.Read();