完整的天氣預報web服務源碼

using System;

using System.Collections;

using System.ComponentModel;

using System.Data;

using System.Diagnostics;

using System.Net;

using System.Text;

using System.IO;

using System.Web;

using System.Web.Services; namespace WeatherWS

{

/// <summary>

/// getCHWeather 的摘要說明。

/// </summary>

[WebService(Namespace=" http://flying.redv.com/monster")]

public class getCHWeather : System.Web.Services.WebService

{

public getCHWeather()

{

//CODEGEN: 該調用是 ASP.NET Web 服務設計器所必需的

InitializeComponent();

} #region 元件設計器生成的代碼 //Web 服務設計器所必需的

private IContainer components = null; /// <summary>

/// 設計器支援所需的方法 - 不要使用代碼編輯器修改

/// 此方法的内容。

/// </summary>

private void InitializeComponent()

{

} /// <summary>

/// 清理所有正在使用的資源。

/// </summary>

protected override void Dispose( bool disposing )

{

if(disposing && components != null)

{

components.Dispose();

}

base.Dispose(disposing);

} #endregion

[WebMethod(Description="中國各城市(縣)天氣預報擷取服務,可接受一字元串參數（可選的查詢方式：·國内城市（縣）全名·字首拼音縮寫·電話區号·郵政編碼,如查詢徐州的天氣情況可輸入'徐州'或'xz'作為參數）")]

public weatherDataClass getWeather(string strCity)

{

weatherDataClass _dsWeather = new weatherDataClass();

try

{

const int maxDay=5;

string []time = new string[maxDay];//存儲日期，從今天開始算起

string []weather = new string[maxDay];//儲存天氣情況資料

string []max = new string[maxDay];//儲存最高溫度資料

string []min = new string[maxDay];//儲存最低溫度資料

string []wind = new string[maxDay];//儲存風向資料 //發送一個post請求到index.jsp頁面以擷取城市資料

Uri uri = new Uri(" http://www.weathercn.com/forecastn/forcast/index.jsp?searchname="+System.Web.HttpUtility.UrlEncode(strCity,System.Text.Encoding.GetEncoding("GB2312")));

WebRequest wreq=WebRequest.Create(uri);

HttpWebResponse wresp=(HttpWebResponse)wreq.GetResponse();

string HTML =""; Stream s=wresp.GetResponseStream();

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

HTML=objReader.ReadToEnd();

if(HTML==null||HTML=="")

return _dsWeather; HTML = HTML.ToLower();//全部轉換為小寫

if(HTML==null||HTML=="")

return _dsWeather;

int head,tail,i;

//查找城市資料 如果沒有找到 則傳回一個空的dataset

head = HTML.IndexOf("查詢結果：",0);

head = HTML.IndexOf("station_name=",head);

if(head==-1)

{

return _dsWeather;

}

head = HTML.IndexOf("station_name=",head+1);

tail = HTML.IndexOf("'",head);

string strCityData = HTML.Substring(head,tail-head);//城市資料擷取

string href = " http://www.weathercn.com/forecastn/forcast/forecastDetail.jsp?"+strCityData;

//根據城市資料去查詢天氣情況 wreq=WebRequest.Create(href);

wresp=(HttpWebResponse)wreq.GetResponse();

HTML ="";

s=wresp.GetResponseStream();

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

HTML=objReader.ReadToEnd();

if(HTML==null||HTML=="")

return _dsWeather;

HTML = HTML.ToLower();//全部轉換為小寫 DateTime dtNow = new DateTime();

dtNow = DateTime.Today;//擷取系統目前日期

dtNow = dtNow.Subtract(TimeSpan.Parse("1"));

for(i=0;i<maxDay;i++)

{

dtNow = dtNow.Add(TimeSpan.Parse("1"));

time[i] = dtNow.ToShortDateString();//日期資料

} //擷取天氣情況資料,總共maxDay天的資料

String date = DateTime.Now.Year.ToString()+"年"+DateTime.Now.Month.ToString()+"月";//目前年月

head = HTML.IndexOf(date,0);

head = HTML.IndexOf("<tr>",head);

for(i=0;i<maxDay;i++)

{

head = HTML.IndexOf("<td",head);

head = HTML.IndexOf("<img",head);

head = HTML.IndexOf("/",head);

head = HTML.IndexOf("/",head+1);

tail = HTML.IndexOf("_",head);

weather[i] = HTML.Substring(head+1,tail-head-1);

head = HTML.IndexOf("</td>",head);

} //擷取近maxDay天溫度資料,包括最高溫度和最低溫度

for(i=0;i<maxDay;i++)

{

head = HTML.IndexOf("max",head);

head = HTML.IndexOf(">",head);

tail = HTML.IndexOf("<",head);

max[i] = HTML.Substring(head+1,tail-head-1);//最高溫度 head = HTML.IndexOf("min",head);

head = HTML.IndexOf(">",head);

tail = HTML.IndexOf("<",head);

min[i] = HTML.Substring(head+1,tail-head-1);//最低溫度

} //最近maxDay天的風向資料

head = HTML.IndexOf("<tr",head);

for(i=0;i<maxDay;i++)

{

head = HTML.IndexOf("class",head);

head = HTML.IndexOf(">",head);

tail = HTML.IndexOf("<",head);

wind[i] = HTML.Substring(head+1,tail-head-1);//風向資料

} //将資料填充到DataSet中去

DataTable dtWeather = new DataTable();

dtWeather.Columns.Add("日期");

dtWeather.Columns.Add("天氣");

dtWeather.Columns.Add("最高溫度");

dtWeather.Columns.Add("最低溫度");

dtWeather.Columns.Add("風力風向");

for(i=0;i<maxDay;i++)

{

DataRow drWeather = dtWeather.NewRow();

drWeather["日期"] = time[i];

drWeather["天氣"] = weather[i];

drWeather["最高溫度"] = max[i];

drWeather["最低溫度"] = min[i];

drWeather["風力風向"] = wind[i];

dtWeather.Rows.Add(drWeather);

}

_dsWeather.dsWeather = new DataSet("weather");

_dsWeather.dsWeather.Tables.Add(dtWeather);

_dsWeather.dsWeather.AcceptChanges();

//開始擷取其它資料

//城市具體位置

//城市簡介:

head = HTML.IndexOf("城市簡介:",0);

tail = HTML.IndexOf("</textarea>",head);

_dsWeather.cityDes = HTML.Substring(head+5,tail-head-5); return _dsWeather; }

catch(Exception e)

{

//DO Something

return _dsWeather;

}

}

//該類用于儲存天氣資料

public class weatherDataClass

{

public weatherDataClass()

{

tel = zip = cityDetail = cityDes = liveDes = deaDes ="";

}

public DataSet dsWeather;//天氣資料

public string tel;//電話區号

public string zip;//郵政編碼

public string cityDetail;//城市具體位置

public string cityDes;//城市介紹

public string liveDes;//生活指數

public string deaDes;//疾病指數

}

}

}