HttpWebRequest 调用 WebService 返回 xml

WebService:

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class WebService : System.Web.Services.WebService {

    public WebService ()     {    }

    [WebMethod]
    public string getConnectionString()
    {
        return "结果信息";  
    }    
}

后台代码直接调用:

string url = "http://192.168.0.156:10001/WebService.asmx/getConnectionString";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse();
String xml=new StreamReader(response.GetResponseStream(),Encoding.UTF8).ReadToEnd();
XmlDocument docXml = new XmlDocument();
docXml.LoadXml(xml);
string str= docXml.ChildNodes[1].InnerText;

结果s:

<?xml version="1.0" encoding="utf-8"?>
<string xmlns="http://tempuri.org/">结果信息</string>

注意:

如果IE访问http://192.168.0.156:10001/WebService.asmx/getConnectionString出现如下问题：
 “/”应用程序中的服务器错误。 因 URL 意外地以“/getConnectionString”结束，请求格式无法识别。
解决方法是：在网站的web.config下添加如下节点

<webServices> 
          <protocols> 
              <add name="HttpPost"/> 
              <add name="HttpGet"/> 
          </protocols> 
</webServices>