ibcadmin 发表于 2017-4-18 09:44:42

C#通过抓取页面获取当天天气信息

/// <summary>
///得到天气数据
/// </summary>
/// <returns>数组（0、天气；1、气温；2、风力；3、紫外线；4、空气）</returns>
public static string[] GetWeather()
{
    Regex regex;

    string[] weather = new string;
    string content = "";

    Match mcTmp;
    Match mcCity;
    int k = 1;

    HttpWebResponse theResponse;
    WebRequest theRequest;


    //ss1.htm 注意：ss1-ss303代表了不同的城市，是不连续的
    theRequest = WebRequest.Create("http://weather.news.qq.com/inc/ss1.htm");
    try
    {
      theResponse = (HttpWebResponse)theRequest.GetResponse();

      using (System.IO.Stream sm = theResponse.GetResponseStream())
      {
            System.IO.StreamReader read = new System.IO.StreamReader(sm, Encoding.Default);
            content = read.ReadToEnd();
      }
    }
    catch (Exception)
    {
      content = "";
    }


    string parttenTmp = "<td height=\"23\" width=\"117\" background=\"/images/r_tembg5.gif\" align=\"center\">(?<item1>[^<]+)</td>";
    k = 1;
    regex = new Regex(parttenTmp, RegexOptions.Compiled | RegexOptions.IgnoreCase);
    for (mcTmp = regex.Match(content), k = 1; mcTmp.Success; mcTmp = mcTmp.NextMatch(), k++)
    {

      weather = mcTmp.Groups["item1"].Value;
    }
    parttenTmp = "height=\"23\" align=\"center\">(?<item1>[^/]+)</td>";
    k = 1;
    regex = new Regex(parttenTmp, RegexOptions.Compiled | RegexOptions.IgnoreCase);
    for (mcTmp = regex.Match(content), k = 1; mcTmp.Success; mcTmp = mcTmp.NextMatch(), k++)
    {
      weather = mcTmp.Groups["item1"].Value;
    }
    return weather;
}

ibcadmin 发表于 2017-4-18 09:45:16

小叶子

Amy尾巴 发表于 2017-4-18 09:50:59

666

meng 发表于 2017-4-18 10:00:34

:victory:学到了
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