2010-12-05 66 views
0

我試圖請求使用WebRequest.GetResponse()的網頁;並將該響應轉換爲chararray,以便我可以對數組進行排序並獲取頁面上的任何HREF標記。問題是,在我的代碼中,響應變成了「System.Net.HttpWebRequest」,而不是應該從頁面中檢索的HTML。Char字節數組HttpWebRequest的HttpWebResponse數組返回「System.Net.HttpWebRequest」

的代碼來獲取字符數組:

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(urlTextBox.Text); 
      request.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.7 (KHTML, like Gecko) Chrome/7.0.517.44 Safari/534.7"; 
      HttpWebResponse response = (HttpWebResponse)request.GetResponse(); 
      System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding(); 
      bytearray = encoding.GetBytes(Convert.ToString(response)); 
      chararray = encoding.GetChars(bytearray); 

代碼搜索鏈接(註釋用於故障排除):

for (int i = 0; i < chararray.Length; i++) 
{ 
    // Get all HREFs 
    if (i < 500 & chararray[i] == 'h' & chararray[i + 1] == 'r' & chararray[i + 2] == 'e' & chararray[i + 3] == '=' & chararray[i + 4] == '"') 
    { 
     for (int tempi = 0; bytearray[i + 4 + tempi] != '"';) 
     { 
      tempstring = tempstring + chararray[i + 4 + tempi].ToString(); 
     } 
     urlarray[urlarray.Length + 1] = tempstring; 
     i = i + 4; 
    } 
} 
scrapeLink1.Text = urlarray[1]; 

如果我錯過了一些東西,或者需要更多的信息,讓我知道。

回答

1

響應是您必須先閱讀。

HttpWebRequest request = WebRequest.Create(urlTextBox.Text) as HttpWebRequest; 
if (request != null) 
{   
    request.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.7 (KHTML, like Gecko) Chrome/7.0.517.44 Safari/534.7"; 
    using (HttpWebRepsonse response = request.GetResponse() as HttpWebResponse) 
    using (StreamReader rdr = new StreamReader(response.GetResponseStream()) 
    { 
     string result = rdr.ReadToEnd(); 
    } 
} 
+0

你能更具體一點嗎?例如,我將如何從響應中讀取流?我是否需要將響應聲明爲webrequest的其他內容? – GunnarJ 2010-12-05 21:53:16