REST WCF 使得我們調(diào)用Web服務(wù)時，可以通過HttpRequest的交互簡單完成。那么老版的WebService能否做到呢？WebService中通過HttpContext.Current.Rquest/Response，我們一樣也可以改造WebMethod。
// 創(chuàng)建一個DataTable
DataTable data = new DataTable("Project");
data.Columns.Add("Name");
data.Columns.Add("Birthday");
data.Rows.Add(new object[] { "Wendy", "1978/03/11" });
data.Rows.Add(new object[] { "Philip", "2000/11/05" });
data.Rows.Add(new object[] { "Felix", "1999/08/04" });
using (var ms = new MemoryStream())
{
// 將DataTable用Xml格式寫入流
data.WriteXml(ms, XmlWriteMode.WriteSchema);
var client = new WebClient();
// 定義HttpRequest的Content-Type(xml,json等)
client.Headers.Add("Content-Type", "text/xml");
var url = "http://localhost:2609/Service1.asmx/SendXml";
// Send HttpRequest
var resp = client.UploadData(url, "POST", ms.ToArray());
var strResp = System.Text.Encoding.UTF8.GetString(resp);
MessageBox.Show(strResp);
}
[WebMethod]
public void SendXml()
{
// 獲得客戶端RAW HttpRequest
var inputStream = HttpContext.Current.Request.InputStream;
// 定義Response返回的格式是:Json
var response = HttpContext.Current.Response;
response.ContentType = "text/json";
//var strXml = "";
//using (var sr = new StreamReader(inputStream))
// strXml = sr.ReadToEnd();
try
{
DataTable data = new DataTable();
using (var xr = XmlReader.Create(inputStream))
data.ReadXml(xr);
// 將讀入Xml的DataTable的行數(shù)返回客戶端
string count = "/"" + data.Rows.Count + "/"";
response.BinaryWrite(System.Text.Encoding.UTF8.GetBytes(count));
}
catch (Exception ex)
{
response.BinaryWrite(System.Text.Encoding.UTF8.GetBytes(ex.Message));
}
}
PS: 如果客戶端的HttpRequest滿足SOAP序列化格式，WebService會為WebMethod將消息反序列化成參數(shù)。相對應(yīng)的客戶端代理類也是通過將消息反序列化成對象供客戶端使用。
