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刚赶工写了一个获取新浪天气预报的功能，顺便把代码分享了出来，以后再有这样的工作，大家可以直接把代码拿来使用。 1.利用新浪提供给的iframe直接嵌入，这种方式非常的简单，但是却没有交互性。代码如下：
<iframe frameborder="0" src="http://php.weather.sina.com.cn/widget/weather.php" scrolling="no" width="246" height="360"></iframe>
2.抓取当天的天气，以指定格式输出。 涉及的核心代码如下：
code)
{ /* [0] "北京 "string [1] "雷阵雨 "string [2] "9℃" string [3] "29℃"string [4] "小于3级"string */ string html = ""; try { HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://weather.sina.com.cn/iframe/weather/" + code + "_w.html "); request.Method = "Get"; //request.Timeout = 1; request.ContentType = "application/x-www-form-urlencoded "; WebResponse response = request.GetResponse(); Stream s = response.GetResponseStream(); StreamReader sr = new StreamReader(s, System.Text.Encoding.GetEncoding("GB2312")); html = sr.ReadToEnd(); s.Close(); sr.Close(); } catch (Exception err) { throw new Exception("访问地址出错~~~ "); } int count = html.Length; int starIndex = html.IndexOf("<table ", 0, count); int endIndex = html.IndexOf("</table>", starIndex, count - starIndex); html = html.Substring(starIndex, endIndex - starIndex + 8); //得到城市 int cityStartIndex = html.IndexOf("<b>", 0, html.Length); int cityEndIndex = html.IndexOf("</b>", 0, html.Length); string City = html.Substring(cityStartIndex + 3, cityEndIndex - cityStartIndex - 3); //得到天气 int weatherStartIndex = html.IndexOf("<b>", cityEndIndex); int weatherEndIndex = html.IndexOf("</b>", weatherStartIndex); string Weather = html.Substring(weatherStartIndex + 3, weatherEndIndex - weatherStartIndex - 3); //得到温度 int temperatureStartIndex = html.IndexOf("<b", weatherEndIndex); int temperatureEndIndex = html.IndexOf("</b>", weatherEndIndex + 3); string Temperature = html.Substring(temperatureStartIndex + 21, temperatureEndIndex - temperatureStartIndex - 21); int int1 = Temperature.IndexOf("℃", 0); int int2 = Temperature.IndexOf("～", 0); int int3 = Temperature.IndexOf("℃", int2); string MinTemperature = Temperature.Substring(int2 + 1, int3 - int2); string MaxTemperature = Temperature.Substring(0, int2 - int1 + 2); //得到风力 int windforceStartIndex = html.IndexOf("风力：", temperatureEndIndex); int windforceEndIndex = html.IndexOf("<br>", windforceStartIndex); string Windforce = html.Substring(windforceStartIndex + 3, windforceEndIndex - windforceStartIndex - 3); if (Windforce.Contains("小于") && (!Windforce.Contains("等于"))) //判断风力是否含有"小于"或"小于等于"字样将,如果有的话，将其替换为2- { //Windforce = Windforce.Replace("小于", "2-"); string strWindforce = Windforce.Substring(2, Windforce.Length - 3); int minWindforce = Int32.Parse(strWindforce) - 1; Windforce = Windforce.Replace("小于", minWindforce.ToString() + "-"); } else if (Windforce.Contains("小于等于")) { string strWindforce = Windforce.Substring(4, Windforce.Length - 5); int minWindforce = Int32.Parse(strWindforce) - 1; Windforce = Windforce.Replace("小于等于", minWindforce.ToString() + "-"); } ArrayList al = new ArrayList(); al.Add(City); al.Add(Weather); al.Add(MinTemperature); al.Add(MaxTemperature); al.Add(Windforce); return al; } 这里涉及到一个ConvertCode类，它的作用是用于把城市转换为对应的全国统一的编码，代码如下：
WebApplication8 { public class ConvertCode { public static string ConvertCodeByCity(string City) { string Code = ""; switch (City) { case "北京": Code = "110100"; break; case "天津": Code = "120100"; break; case "石家庄": Code = "130101"; break; case "唐山": Code = "130201"; break; case "秦皇岛": Code = "130301"; break; case "张家口": Code = "130701"; break; case "承德": Code = "130801"; break; case "廊坊": Code = "131001"; break; case "邯郸": Code = "130401"; break; case "邢台": Code = "130501"; break; case "保定": Code = "130601"; break; case "沧州": Code = "130901"; break; case "衡水": Code = "133001"; break; case "太原": Code = "140101"; break; case "大同": Code = "140201"; break; case "阳泉": Code = "140301"; break; case "晋城": Code = "140501"; break; case "朔州": Code = "140601"; break; case "忻州": Code = "142201"; break; case "离石": Code = "142331"; break; case "榆次": Code = "142401"; break; case "临汾": Code = "142601"; break; case "运城": Code = "142701"; break; case "长治": Code = "140401"; break; case "呼和浩特": Code = "150101"; break; case "包头": Code = "150201"; break; case "乌海": Code = "150301"; break; case "集宁": Code = "152601"; break; case "巴彦浩特": //这个城市搜索不到 Code = "152701"; break; case "临河": Code = "152801"; break; case "鄂尔多斯": //这个城市搜索不到 Code = "152921"; break; case "赤峰": Code = "150401"; break; case "通辽": Code = "152301"; break; case "锡林浩特": Code = "152502"; break; case "海拉尔": //这个城市搜索不到 Code = "152101"; break; case "乌兰浩特": Code = "152201"; break; case "沈阳": Code = "210101"; break; case "大连": Code = "210201"; break; case "鞍山": Code = "210301"; break; case "抚顺": Code = "210401"; break; case "本溪": Code = "210501"; break; case "锦州": Code = "210701"; break; case "营口": Code = "210801"; break; case "阜新": Code = "210901"; break; case "盘锦": Code = "211101"; break; case "铁岭": Code = "211201"; break; case "朝阳": Code = "211301" |
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