Question

我正在尝试使用WebRequest.GetResponse（）来请求网页;并将该响应转换为chararray，因此我可以对数组进行排序并获取页面上的任何HREF标记。问题是，在我的代码中，响应变为“System.Net.HttpWebRequest”，而不是应该从页面检索的HTML。

获取char数组的代码：

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);

搜索链接的代码（注释以进行故障排除）：

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];

如果我错过了某些内容，或者需要更多信息，请与我们联系。

Answer 1

您必须先阅读 stream 的响应。

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();
    }
}

HttpWebRequest的HttpWebResponse字节数组的Char数组返回“System.Net.HttpWebRequest”

1 个答案: