/// <summary>
/// 取得贵阳天气信息
/// </summary>
/// <param name="code">城市代码</param>
/// <returns></returns>
public static WeaherObject GetWeatherInfor(String code)
{
WeaherObject w = null;
try
{
w = (WeaherObject)HttpContext.Current.Cache["_WeaherObject"];
}
catch { }
if (w != null)
{
return(w);
}
String url = "http://weather.news.qq.com/inc/07_ss" + code + ".htm";
System.Net.WebClient client = new System.Net.WebClient();
try
{
String key = client.DownloadString(url);
w = new WeaherObject();
//读取城市
int i = key.IndexOf("class=\"wht1 lk37\">");
key = key.Substring(i, key.Length - i);
int j = key.IndexOf("</td>");
w.City = key.Substring(0, j).Replace("class=\"wht1 lk37\">", "");
//读取图片
i = key.IndexOf("<img");
key = key.Substring(i, key.Length - i);
j = key.IndexOf("</td>");
w.WeaherImage = key.Substring(0, j);
//读取天气信息
i = key.IndexOf("<div class=\"txbd\">");
key = key.Substring(i, key.Length - i);
i = key.IndexOf("</div>");
w.WeaherInfor = key.Substring(0, i).Replace("<div class=\"txbd\">", "");
key = key.Substring(i, key.Length - i);
//读取气温
w.Temperature = key.Substring(6, key.IndexOf("</td") - 6);
HttpContext.Current.Cache.Add("_WeaherObject", w, null, DateTime.Now.AddHours(1),
Cache.NoSlidingExpiration, CacheItemPriority.Default, null);
return(w);
}
catch // (Exception err)
{
return(null);
}
}
/// <summary>
/// 取得指定城市的天气信息
/// </summary>
/// <param name="code">城市代码</param>
/// <returns></returns>
public static String GetWeather(String code)
{
WeaherObject w = GetWeatherInfor(code);
if (w != null)
{
return(String.Format("<a href='http://weather.news.qq.com/preend.htm?dc" + code
+ ".htm' target='_blank'><span style='color:#333;'>{1} {0} {2}</span></a>", w.Temperature, w.City, w.WeaherInfor));
}
else
{
return("");
}
}