.net http post xml 例子

最新推荐文章于 2024-05-20 09:08:13 发布

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#.net #xml #parameters #string #encoding #scheme

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本文详细介绍了HTTP POST请求中XML数据的交互过程，包括参数准备、XML文档生成、发送请求及响应处理，并通过配置web.config实现XML数据验证。

http+post+xml

html:

</div>

code:

protected void Page_Load(object sender, EventArgs e)
{
if (HttpContext.Current.Request.HttpMethod.Equals("POST"))
{
IDictionary<string, string> parameters = PrepareParameters();
XmlDocument document = GetXmlDocument(parameters);
string url = GetApplicationUrl() + "/userinfo.ashx";
WebRequest request = WebRequest.Create(url);
request.Method = "POST";

          using (StreamWriter writer = new StreamWriter(request.GetRequestStream()))
            {
                writer.Write(document.InnerXml);
            }

            using (WebResponse response = request.GetResponse())
            {
                using (StreamReader reader = new StreamReader(response.GetResponseStream()))
                {
                    Response.Write(reader.ReadToEnd());
                    Response.End();
                }
            }
}
}

private IDictionary<string, string> Parameters()
    {
        Dictionary<string, string> parameters = new Dictionary<string, string>();
        parameters["username"] = Request.Form["username"];
        parameters["key"] = Request.Form["key"];
        parameters["date"] = Request.Form["date"];
        return parameters;
    }

private XmlDocument GetXmlDocument(IDictionary<string, string> parameters)
    {
        XmlDocument document = new XmlDocument();
        document.LoadXml("<?xml version=\"1.0\" encoding=\"utf-8\"?><root></root>");

        foreach (KeyValuePair<string, string> param in parameters)
        {
            XmlNode node = document.CreateElement(param.Key);
            node.InnerText = param.Value;

document.DocumentElement.AppendChild(node);
}

return document;
}

web.config
<httpHandlers>
<add verb="*"
path="userinfo.ashx"
type="MyHandler.userinfoHandler, MyHandler"/>
</httpHandlers>

namespace MyHandler {
public class MyHandler : IHttpHandler
{

ResourceManager resource;

#region IHttpHandler 成员

        public bool IsReusable
        {
            get { return false; }
        }

public void ProcessRequest(HttpContext context)
        {
  context.Response.ContentType = "text/xml";
  string xmlString = "";

  //xml xsd格式验证
  XmlDocument document = new XmlDocument();

  //获取bll文件夹Resources的userinfoScheme.xsd 的内容，见下文
  ResourceManager resource = new ResourceManager("BLL.Resources", typeof(Global).Assembly);
  string schemeText = resource.GetObject("userinfoScheme") as string;

  using (StreamReader requestReader = new StreamReader(context.Request.InputStream, context.Request.ContentEncoding)) {
  using (StringReader schemeReader = new StringReader(schemeText)) {
     XmlReader scheme = XmlReader.Create(schemeReader, new XmlReaderSettings() {
      IgnoreWhitespace = true,
      ValidationType = ValidationType.Schema
     });

     document.Load(requestReader);
     document.Schemas.Add("http://tempuri.org/userinfo.xsd", scheme);
     document.Validate((sender, e) => {
      throw new Exception(e.Message, e.Exception);
     });
    }
   }

   StringBuilder builder = new StringBuilder();
                builder.Append("<?xml version=\"1.0\" encoding=\"utf-8\" ?>");
                builder.Append("<root>");
                builder.Append("<content>xml demo</content>");
                builder.Append("</root>");
                xmlString = builder.ToString();

  context.Response.Write(xmlString);
         context.Response.End();
}
#endregion

}
}

xsd 的内容

<?xml version="1.0" encoding="utf-8"?>
<xs:schema id="inviteScoreScheme"
     targetNamespace="http://tempuri.org/userinfo.xsd"
     elementFormDefault="qualified"
     xmlns="http://tempuri.org/userinfo.xsd"
     xmlns:mstns="http://tempuri.org/userinfo.xsd"
     xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="root">
  <xs:complexType>
   <xs:all>
    <xs:element name="username"
       type="xs:string"
       minOccurs="1"
       maxOccurs="1"/>
    <xs:element name="key"
       type="xs:string"
       minOccurs="1"
       maxOccurs="1"/>
    <xs:element name="date"
       type="xs:string"
       minOccurs="1"
       maxOccurs="1"/>

    <xs:element name="skey"
       type="xs:string"
       minOccurs="1"
       maxOccurs="1"/>
   </xs:all>
  </xs:complexType>
</xs:element>
</xs:schema>