C#通过抓取页面获取当天天气信息

[C#] 纯文本查看 复制代码

/// <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[5];  
    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[0] = 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[k] = mcTmp.Groups["item1"].Value;  
    }  
    return weather;  
}  

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