Question

我无法将HTTP响应保存到文本文件中。我可以发出一个获取请求，我可以看到它通过，我得到了我想要的响应，但它没有保存到文件。我的代码如下，我已经注释了我尝试过的其他解决方案。

    protected void Button1_Click(object sender, EventArgs e)
    {
        string input = TextBox1.Text;
        string sURL;
        sURL = "http://api.urlvoid.com/api1000/key/host/" + input + "/";
        HttpWebRequest wrGETURL = (HttpWebRequest)WebRequest.Create(sURL);
        HttpWebResponse wrResponse = (HttpWebResponse)wrGETURL.GetResponse();
        StreamWriter SW = new StreamWriter(@"C:\Users\user\Desktop\API_Call_Test.txt");
        Stream DataStream = wrResponse.GetResponseStream();
        StreamReader SR = new StreamReader(DataStream);
        string AllResponse = SR.ReadToEnd();
        //var file = File.Open(@"C:\Users\user\Desktop\API_Call_Test.txt", FileMode.Create);
        SW.Write(DataStream);
        //DataStream.CopyTo(file);
        wrResponse.Close();

    }

TCP流的Wireshark分析：

    GET /api1000/key/host/mo.gov/                                HTTP/1.1
    Host: api.urlvoid.com
    Connection: Keep-Alive

    HTTP/1.1 200 OK
    Server: nginx
    Date: Fri, 12 Aug 2016 16:31:15 GMT
    Content-Type: text/xml
    Content-Length: 909
    Age: 0


    <?xml version="1.0" encoding="UTF-8"?>
    <response>
    <details>
     <host>host</host>
     <updated>1463838832</updated>
     <http_response_code>200</http_response_code>
     <domain_age>0</domain_age>
     <google_page_rank>0</google_page_rank>
     <alexa_rank>0</alexa_rank>
     <connect_time>0.005995</connect_time>
     <header_size>959</header_size>
     <download_size>54726</download_size>
     <speed_download>67090</speed_download>
     <external_url_redirect></external_url_redirect>
     <ip>
    <addr>104.16.20.39</addr>
    <hostname></hostname>
    <asn>13335</asn>
    <asname>CloudFlare, Inc.</asname>
    <country_code>US</country_code>
    <country_name>United States</country_name>
    <region_name>California</region_name>
    <city_name>San Francisco</city_name>
    <continent_code>NA</continent_code>
    <continent_name>North America</continent_name>
    <latitude>37.7697</latitude>
    <longitude>-122.393</longitude>
     </ip>
    </details>
    <page_load>0.00</page_load>
    </response>

Answer 1

嗯，那就像下面这样。我认为你可以很好地适应它。

string url = "http://www.google.com";
string file = "response.txt";
string content = string.Empty;

// set up request/response
var request = (HttpWebRequest) WebRequest.Create(url);
var response = (HttpWebResponse) request.GetResponse();
var stream = response.GetResponseStream();

// read response content
using (var reader = new StreamReader(stream ?? new MemoryStream(), Encoding.UTF8))
    content = reader.ReadToEnd();

// write to file on desktop
File.WriteAllText(
    Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), file), 
    content, 
    Encoding.UTF8);

Answer 2

您没有编写请求数据，而您需要一个流阅读器来读取数据：

protected void Button1_Click(object sender, EventArgs e)
{
    string input = TextBox1.Text;
    string sURL;
    sURL = "http://api.urlvoid.com/api1000/key/host/" + input + "/";
    HttpWebRequest wrGETURL = (HttpWebRequest)WebRequest.Create(sURL);
    using (Stream stm = wrGETURL.GetRequestStream())
    {
        using (StreamWriter stmw = new StreamWriter(stm))
        {
            stmw.Write(input);
        }
    }
    using (StreamReader responseReader = new StreamReader(wrGETURL.GetResponse().GetResponseStream()))
    {
        string resultString = responseReader.ReadToEnd();
        if (File.Exists(@"C:\Users\user\Desktop\API_Call_Test.txt"))
            File.Delete(@"C:\Users\user\Desktop\API_Call_Test.txt");
        File.Create(@"C:\Users\user\Desktop\API_Call_Test.txt").Close();
        File.WriteAllText(@"C:\Users\user\Desktop\API_Call_Test.txt", resultString);
    }
}

保存HTTP获取文件的响应

2 个答案: