1.1. Web services端代码
很简单的一个Web services，一个foo方法，输入一个整数，返回一个这个整数乘以十后的字符串，内容如下： [WebService(Namespace = "http://chnking.com/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class FOOSAMPLEService : System.Web.Services.WebService
{
[WebMethod]
public string foo(int a)
{
return (a*10).ToString();
}
}
发布为web services后，在浏览器浏览这个web services的asmx文件，可以看到这个foo如何用soap协议进行调用。
以下是 SOAP 1.2 请求和响应示例。所显示的占位符需替换为实际值。
下面代码在应用程序中用HttpWebRequest对象以上面web services要求的格式发送soap请求。服务端设置为只允许windows身份验证，HttpWebRequest对象同时传送用户凭据，最后接收服务端的返回的soap的结果。
//根据需要访问的URL新建HttpWebRequest对象
HttpWebRequest myHttpWebRequest = (HttpWebRequest)HttpWebRequest.Create("http://localhost:81/ws1/Service.asmx");
//要发送soap请求的内容，必须使用post方法传送数据
myHttpWebRequest.Method = "POST";
//缺省当前登录用户的身份凭据
myHttpWebRequest.Credentials = CredentialCache.DefaultCredentials;
//准备soap请求的内容
string cont;
cont = "<?xml version='1.0' encoding='utf-8'?>";
cont += "<soap12:Envelope xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:soap12='http://www.w3.org/2003/05/soap-envelope'>";
cont += " <soap12:Body>";
cont += " <foo xmlns='http://chnking.com/'>";
cont += " <a>1</a>";
cont += " </foo>";
cont += " </soap12:Body>";
cont += "</soap12:Envelope>";
byte[] byteRequest = Encoding.UTF8.GetBytes(cont);
myHttpWebRequest.ContentType = "application/soap+xml; charset=utf-8";
myHttpWebRequest.ContentLength = byteRequest.Length;
myHttpWebRequest.Timeout = 100000;
//将soap请求的内容放入HttpWebRequest对象post方法的请求数据部分
Stream newStream = myHttpWebRequest.GetRequestStream();
newStream.Write(byteRequest, 0, byteRequest.Length);
//发送请求
HttpWebResponse myWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse();
//将收到的回应从Stream转换成string
newStream = myWebResponse.GetResponseStream();
byte[] byteResponse = new byte[myWebResponse.ContentLength];
newStream.Read(byteResponse, 0, (int)myWebResponse.ContentLength);
//str里面就是返回soap回应的字符串了
string str = Encoding.UTF8.GetString(byteResponse);
myWebResponse.Close();
返回的str的结果是：
<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><fooResponse xmlns="http://chnking.com/"><fooResult>10</fooResult></fooResponse></soap:Body></soap:Envelope>
1.2. Soap调用web services的格式
POST /WS1/Service.asmx HTTP/1.1
Host: localhost
Content-Type: application/soap+xml; charset=utf-8
Content-Length: length
<?xml version="1.0" encoding="utf-8"?>
<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
<soap12:Body>
<foo xmlns="http://chnking.com/">
<a>int</a>
</foo>
</soap12:Body>
</soap12:Envelope>
HTTP/1.1 200 OK
Content-Type: application/soap+xml; charset=utf-8
Content-Length: length
<?xml version="1.0" encoding="utf-8"?>
<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
<soap12:Body>
<fooResponse xmlns="http://chnking.com/">
<fooResult>string</fooResult>
</fooResponse>
</soap12:Body>
</soap12:Envelope>
1.3. 客户端应用调用web services代码
