dynamic解析Http xml格式响应数据

继续上一篇 构建RESTful风格的WCF服务 ，咱已经把服务端的数据和服务准备好了，客户端调用 wcf rest接口后如何解析xml？下面使用dynamic关键字解析来至于WCF REST XML响应数据。

首先创建一个WCF客户端类，添加GET、POST处理方法：

  public class WcfRestClient    {        public Uri BaseUri { get; private set; } //Url：http://localhost:1008/        public WcfRestClient(Uri baseUri)        {            BaseUri = baseUri;        }        public WcfRestClient(string baseUrl)            : this(new Uri(baseUrl))        {         }        private dynamic GetResponseObject(HttpWebRequest request)        {            try            {                var response = request.GetResponse() as HttpWebResponse;                using (var stream = response.GetResponseStream())                {                    if (!stream.CanRead)                        return null;                    StreamReader reader = new StreamReader(stream);                    string source = reader.ReadToEnd();                    response.Close();                    return XmlStringToDynamic(source);                }            }            catch (WebException ex)            {                using (var stream = ex.Response.GetResponseStream())                {                    if (!stream.CanRead)                        return null;                    StreamReader reader = new StreamReader(stream);                    string source = reader.ReadToEnd();                    return XmlStringToDynamic(source);                }            }        }
　　　　//GET请求        public dynamic WebGet(string path)        {            HttpWebRequest request=(HttpWebRequest)HttpWebRequest.Create(BaseUri.ToString()+path);            return GetResponseObject(request);        }
　　　　//POST请求        public dynamic WebPost(string path, string data)        {            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(BaseUri.ToString() + path);            request.Method = "POST";            if (!String.IsNullOrEmpty(data))            {                request.ContentType = "text/xml"; //xml格式传输数据                byte[] buffer = Encoding.UTF8.GetBytes(data);                request.ContentLength = buffer.Length;                using (var stream = request.GetRequestStream())                {                    stream.Write(buffer, 0, buffer.Length);                    stream.Flush();                }            }            return GetResponseObject(request);        }

         //
        public static dynamic XmlStringToDynamic(string xml)        {            if (String.IsNullOrEmpty(xml))                return null;            XElement element = XElement.Parse(xml);            dynamic dynamicResult = new DynamicXMLNode(element);            return dynamicResult;        }

 

    }

2、dynamic处理xml节点DynamicXMLNode类，需要继承DynamicObject(System.Dynamic),对返回的xml对象进行动态解析。

  public class DynamicXMLNode:DynamicObject    {        public DynamicXMLNode() { }                XElement node;        public XElement Element        {            get            {                return node;            }        }        public DynamicXMLNode(XElement node)        {            this.node = node;        }        public DynamicXMLNode(string name)        {            node = new XElement(name);        }        public override bool TryGetMember(GetMemberBinder binder, out object result)        {            if (binder.Name == "Value")            {                result = node.Value;                return true;            }            if (binder.Name == "ElementCount")            {                if (node.HasElements)                    result = node.Elements().Count();                else                    result = 0;                return true;            }            XElement getNode;            try            {                getNode = node.Element(binder.Name);            }            catch            {                result = null;                return true;            }            if (getNode != null)            {                result = new DynamicXMLNode(getNode);                return true;            }            else            {                result = null;                return false;            }        }    }

3、最后咱们来测试一下发起GET和POST请求，首先创建一个aspx页面，在.cs文件：

 /// <summary>        /// 处理GET请求        /// </summary>        private void GetData()        {            WcfRestClient client = new WcfRestClient("http://localhost:1008/");            dynamic result = client.WebGet(String.Format("user/search/{0}", "600000"));            this.txtGetUrl.Text = client.BaseUri + String.Format("user/search/{0}", "600000");            this.txtId.Text = result.Id.Value;            this.txtCode.Text = result.Code.Value;            this.txtName.Text = result.Name.Value;            this.txtDesc.Text = result.Description.Value;        }        /// <summary>        /// 测试POST请求        /// </summary>        private void PostData()        {            string strBuiler = String.Format("<UserInfo><Code>{0}</Code><Description>{1}</Description><Id>{2}</Id><Name>{3}</Name></UserInfo>","90000","post请求",1000,"好基友");            WcfRestClient client = new WcfRestClient("http://localhost:1008/");            dynamic result = client.WebPost("user/register", strBuiler);            this.txtPOSTUrl.Text = client.BaseUri + "user/register";            this.txtId1.Text = result.Id.Value;            this.txtCode1.Text = result.Code.Value;            this.txtName1.Text = result.Name.Value;            this.txtDesc1.Text = result.Description.Value;        }

测试结果：

 

噢了。。。