用C#读取sina天气预报到wap页面(二)(原创)

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("\t","");

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("\t", "");

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];

}

}

#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("\t","");

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("\t", "");

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("&lt;","<");

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

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;

}

}

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