POST操作 - 無參數

Question

我遇到問題。我希望做一個動作後，我做這樣的：

string post_data = string.Format("taskId={0}&inputId={1}&value={2}", taskId, inputId, "101"); 

string uri = "http://localhost:60837/Default.aspx"; 
// Create a request using a URL that can receive a post. 
     WebRequest request = WebRequest.Create(uri); 
     // Set the Method property of the request to POST. 
     request.Method = "POST"; 
     // Create POST data and convert it to a byte array 
     var byteArray = Encoding.UTF8.GetBytes(post_data); 
     // Set the ContentType property of the WebRequest. 
     request.ContentType = "application/x-www-form-urlencoded"; 
     // Set the ContentLength property of the WebRequest. 
     request.ContentLength = byteArray.Length; 
     // Get the request stream. 
     Stream dataStream = request.GetRequestStream(); 
     // Write the data to the request stream. 
     dataStream.Write(byteArray, 0, byteArray.Length); 
     // Close the Stream object. 
     dataStream.Close(); 
     // Get the response. 
     WebResponse response = request.GetResponse(); 
     // Display the status. 
     Console.WriteLine(((HttpWebResponse)response).StatusDescription); 
     // Get the stream containing content returned by the server. 
     dataStream = response.GetResponseStream(); 
     // Open the stream using a StreamReader for easy access. 
     StreamReader reader = new StreamReader(dataStream); 
     // Read the content. 
     string responseFromServer = reader.ReadToEnd(); 
     // Display the content. 
     Console.WriteLine(responseFromServer); 
     // Clean up the streams. 
     reader.Close(); 
     dataStream.Close(); 
     response.Close(); 

這是我的Default.aspx我的代碼behing：

public partial class _Default : System.Web.UI.Page 
{ 
    protected void Page_Load(object sender, EventArgs e) 
    { 
     Response.Write(Caller.Process(Request.RawUrl, Request.QueryString, Request.UserHostAddress)); 
    } 
} 

我的加工方法是這樣的： static static readonly string // paramDefinition =「definition」， paramTaskId =「taskId」， paramInputId =「inputId」， paramValue =「value」;

static public string Process(string query, NameValueCollection collection, string ip) 
    { 
     StringBuilder result = new StringBuilder(); 

     Func<string, bool> check = str => 
     { 
      if (!collection.AllKeys.Contains(str)) 
      { 
       result.AppendLine(string.Format("No {0} parameter. ", str)); 
       return false; 
      } 
      return true; 
     }; 
     if (check(paramTaskId) && check(paramInputId) && check(paramValue)) 
     { 
      result.Append("OK"); 
      Execute(query, collection, ip); 
     } 
     else 
     { 
      WriteLog(result.ToString(), query, ip); 
     } 

     return result.ToString(); 
    } 

問題是我沒有得到我的Deafault.aspx參數。當我在瀏覽器中進行操作時，一切正常。你知道什麼是問題嗎？預先感謝;）

Answer 1

使用瀏覽器方法，您通過GET（即使用作爲url的一部分傳遞參數）傳遞變量。使用該代碼，您將通過POST。這些是兩個不同的東西，在服務器端處理時它們的處理方式不同。

當您在Default.aspx的代碼中引用變量時，您使用的是Request.QueryString，它專門用於查看通過GET傳遞的參數，或者在url中。要檢索通過POST傳遞的變量，您需要使用Request.Form["varName"]。