用C#读取sina天气预报到wap页面

＜%@ Register TagPrefix="mobile" Namespace="System.Web.UI.MobileControls" Assembly="System.Web.Mobile" %＞＜%@ Page language="c#" Codebehind="weather.aspx.cs" Inherits="goodwap.life.weather" AutoEventWireup="false" %＞＜mobile:form id="Form1" runat="server"＞


＜FONT face="宋体"＞


＜mobile:Label id="Label3" runat="server" Font-Bold="True"＞【生活资讯】＜/mobile:Label＞


＜mobile:Label id="Label1" runat="server" Font-Italic="True"＞==天气预报==＜/mobile:Label＞


＜mobile:Label id="l_date" runat="server"＞＜/mobile:Label＞


＜mobile:Label id="l_city" runat="server"＞＜/mobile:Label＞


＜mobile:Label id="l_wea" runat="server"＞＜/mobile:Label＞


＜mobile:Label id="l_sky" runat="server"＞＜/mobile:Label＞


＜mobile:Label id="l_w1" runat="server"＞＜/mobile:Label＞


＜mobile:Label id="l_w2" runat="server"＞＜/mobile:Label＞


＜mobile:Label id="l_w3" runat="server"＞＜/mobile:Label＞


＜mobile:Label id="Label2" runat="server"＞【请选择城市名】：＜/mobile:Label＞


＜mobile:SelectionList id="s_weather" runat="server"＞


＜Item Value="深圳" Text="深圳" Selected="True"＞＜/Item＞


＜Item Value="广州" Text="广州"＞＜/Item＞


＜Item Value="上海" Text="上海"＞＜/Item＞


＜Item Value="北京" Text="北京"＞＜/Item＞


＜Item Value="天津" Text="天津"＞＜/Item＞


＜Item Value="武汉" Text="武汉"＞＜/Item＞


＜Item Value="重庆" Text="重庆"＞＜/Item＞


＜Item Value="成都" Text="成都"＞＜/Item＞


＜Item Value="南京" Text="南京"＞＜/Item＞


＜Item Value="香港" Text="香港"＞＜/Item＞


＜Item Value="澳门" Text="澳门"＞＜/Item＞


＜/mobile:SelectionList＞


＜mobile:Command id="Command1" runat="server"＞查 询＜/mobile:Command＞


＜mobile:Link id="Link1" runat="server" NavigateUrl="../default.aspx#Goodview"＞首 页＜/mobile:Link＞＜/FONT＞＜/mobile:form＞




public class weather : System.Web.UI.MobileControls.MobilePage




......{


protected System.Web.UI.MobileControls.Label Label1;


protected System.Web.UI.MobileControls.Label Label2;


protected System.Web.UI.MobileControls.SelectionList s_weather;


protected System.Web.UI.MobileControls.Label l_date;


protected System.Web.UI.MobileControls.Label l_city;


protected System.Web.UI.MobileControls.Label l_wea;


protected System.Web.UI.MobileControls.Label l_sky;


protected System.Web.UI.MobileControls.Label l_w1;


protected System.Web.UI.MobileControls.Label l_w2;


protected System.Web.UI.MobileControls.Label l_w3;


protected System.Web.UI.MobileControls.Link Link1;


protected System.Web.UI.MobileControls.Command Command1;


protected System.Web.UI.MobileControls.Label Label3;


protected System.Web.UI.MobileControls.Form Form1;




private void Page_Load(object sender, System.EventArgs e)




......{


// 在此处放置用户代码以初始化页面


if (!Page.IsPostBack)




......{


string city = "深圳";


int start,stop;


string weather1,weather2,wea;


string wea_city = weather_city(city);


wea_city = wea_city.Replace(" ","");




start = wea_city.IndexOf("<b>",0,wea_city.Length);


stop = wea_city.IndexOf("</b>", start);


weather1 = wea_city.Substring(start, stop-start).Trim() + " ";


weather1 = weather1.Substring(3,8).Trim();




start = wea_city.IndexOf("<tdstyle="font-size:40px;font-family:TimesNewRoman;font-weight:bold;">",0,wea_city.Length);


stop = wea_city.IndexOf("℃",start) + 40;


weather2 = wea_city.Substring(start, stop-start);


weather2 = weather2.Substring(stop-start-42,40).Trim();


weather2 = weather2.Replace(" ","");




start = wea_city.IndexOf("<fontcolor=#183888><b>", 0, wea_city.Length);


stop = wea_city.IndexOf("</b></font>",start);


wea = wea_city.Substring(start,stop-start);


wea = wea.Substring(22,wea.Length-22) + "kbrk";


wea = wea.Replace(" ", "");


wea = wea.Replace(">", "k");


wea = wea.Replace("<", "k");


wea = wea.Replace("kbrk", "k");


string [] wall = null;




char[] seperator = ......{'k'};


wall = wea.Split(seperator);






/**//**//**///////////////////////////////////////


l_city.Text = "[城市]：" + city;


l_wea.Text = "[天气]：" + weather1;


l_sky.Text = "[温度]：" + weather2;




/**//**//**////////


l_date.Text = wall[0];


l_w1.Text = wall[1];


l_w2.Text = wall[2];


l_w3.Text = wall[3];


}


}






Web 窗体设计器生成的代码Web 窗体设计器生成的代码#region Web 窗体设计器生成的代码


override protected void OnInit(EventArgs e)




......{


//


// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。


//


InitializeComponent();


base.OnInit(e);


}






/**//**//**//// <summary>


/// 设计器支持所需的方法 - 不要使用代码编辑器修改


/// 此方法的内容。


/// </summary>


private void InitializeComponent()




......{


this.Command1.Click += new System.EventHandler(this.Command1_Click);


this.Load += new System.EventHandler(this.Page_Load);




}


#endregion




private void Command1_Click(object sender, System.EventArgs e)




......{


string city = s_weather.Selection.Value.Trim();


int start,stop;


string weather1,weather2,wea;


string wea_city = weather_city(city);


wea_city = wea_city.Replace(" ","");




start = wea_city.IndexOf("<b>",0,wea_city.Length);


stop = wea_city.IndexOf("</b>", start);


weather1 = wea_city.Substring(start, stop-start).Trim() + " ";


weather1 = weather1.Substring(3,8).Trim();




start = wea_city.IndexOf("<tdstyle="font-size:40px;font-family:TimesNewRoman;font-weight:bold;">",0,wea_city.Length);


stop = wea_city.IndexOf("℃",start) + 40;


weather2 = wea_city.Substring(start, stop-start);


weather2 = weather2.Substring(stop-start-42,40).Trim();


weather2 = weather2.Replace(" ","");




start = wea_city.IndexOf("<fontcolor=#183888><b>", 0, wea_city.Length);


stop = wea_city.IndexOf("</b></font>",start);


wea = wea_city.Substring(start,stop-start);


wea = wea.Substring(22,wea.Length-22) + "kbrk";


wea = wea.Replace(" ", "");


wea = wea.Replace(">", "k");


wea = wea.Replace("<", "k");


wea = wea.Replace("kbrk", "k");


string [] wall = null;




char[] seperator = ......{'k'};


wall = wea.Split(seperator);






/**//**//**///////////////////////////////////////


l_city.Text = "[城市]：" + city;


l_wea.Text = "[天气]：" + weather1;


l_sky.Text = "[温度]：" + weather2;




/**//**//**////////


l_date.Text = wall[0];


l_w1.Text = wall[1];


l_w2.Text = wall[2];


l_w3.Text = wall[3];


}




public string weather_city(string city)




......{


string temp = null;


try




......{


string strURL = "http://weather.news.sina.com.cn/cgi-bin/figureWeather/search.cgi";


HttpWebRequest request;


request = (HttpWebRequest)WebRequest.Create(strURL);


request.Method="POST"; //Post请求方式


request.ContentType="application/x-www-form-urlencoded"; //内容类型


string paraUrlCoded = System.Web.HttpUtility.UrlEncode("city"); //参数经过URL编码


paraUrlCoded = paraUrlCoded + "=" + System.Web.HttpUtility.UrlEncode(city, System.Text.Encoding.GetEncoding("GB2312"));


byte[] payload;


payload = System.Text.Encoding.GetEncoding("GB2312").GetBytes(paraUrlCoded); //将URL编码后的字符串转化为字节


request.ContentLength = payload.Length; //设置请求的ContentLength


Stream writer = request.GetRequestStream(); //获得请求流


writer.Write(payload,0,payload.Length); //将请求参数写入流


writer.Close(); //关闭请求流


HttpWebResponse response;


response = (HttpWebResponse)request.GetResponse(); //获得响应流


Stream s;


s = response.GetResponseStream();


StreamReader objReader = new StreamReader(s,System.Text.Encoding.GetEncoding("GB2312"));


string HTML = "";


string sLine = "";


int i = 0;


while (sLine!=null)




......{


i++;


sLine = objReader.ReadLine();


if (sLine!=null)


HTML += sLine;


}


HTML = HTML.Replace("<","<");


HTML = HTML.Replace(">",">");


int start,stop;


start = HTML.IndexOf("<img src="http://image2.sina.com.cn/dy/weather/images/figure/",0,HTML.Length);


stop = HTML.IndexOf("<td background=http://image2.sina.com.cn/dy/weather/images",start);


temp = HTML.Substring(start, stop - start);


}


catch (Exception x)




......{


}


return temp;


}


}