完整的天气预报web服务源码

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 的摘要说明。

/// </summary>

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

public class getCHWeather : System.Web.Services.WebService

{

public getCHWeather()

{

//CODEGEN: 该调用是 ASP.NET Web 服务设计器所必需的

InitializeComponent();

} #region 组件设计器生成的代码 //Web 服务设计器所必需的

private IContainer components = null; /// <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()

{

} /// <summary>

/// 清理所有正在使用的资源。

/// </summary>

protected override void Dispose( bool disposing )

{

if(disposing && components != null)

{

components.Dispose();

}

base.Dispose(disposing);

} #endregion

[WebMethod(Description="中国各城市(县)天气预报获取服务,可接受一字符串参数（可选的查询方式：·国内城市（县）全名·字首拼音缩写·电话区号·邮政编码,如查询徐州的天气情况可输入'徐州'或'xz'作为参数）")]

public weatherDataClass getWeather(string strCity)

{

weatherDataClass _dsWeather = new weatherDataClass();

try

{

const int maxDay=5;

string []time = new string[maxDay];//存储日期，从今天开始算起

string []weather = new string[maxDay];//保存天气情况数据

string []max = new string[maxDay];//保存最高温度数据

string []min = new string[maxDay];//保存最低温度数据

string []wind = new string[maxDay];//保存风向数据 //发送一个post请求到index.jsp页面以获取城市数据

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();//全部转换为小写

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

return _dsWeather;

int head,tail,i;

//查找城市数据 如果没有找到 则返回一个空的dataset

head = HTML.IndexOf("查询结果：",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);//城市数据获取

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

//根据城市数据去查询天气情况 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();//全部转换为小写 DateTime dtNow = new DateTime();

dtNow = DateTime.Today;//获取系统当前日期

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

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

{

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

time[i] = dtNow.ToShortDateString();//日期数据

} //获取天气情况数据,总共maxDay天的数据

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

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);

} //获取近maxDay天温度数据,包括最高温度和最低温度

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);//最高温度 head = HTML.IndexOf("min",head);

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

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

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

} //最近maxDay天的风向数据

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);//风向数据

} //将数据填充到DataSet中去

DataTable dtWeather = new DataTable();

dtWeather.Columns.Add("日期");

dtWeather.Columns.Add("天气");

dtWeather.Columns.Add("最高温度");

dtWeather.Columns.Add("最低温度");

dtWeather.Columns.Add("风力风向");

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

{

DataRow drWeather = dtWeather.NewRow();

drWeather["日期"] = time[i];

drWeather["天气"] = weather[i];

drWeather["最高温度"] = max[i];

drWeather["最低温度"] = min[i];

drWeather["风力风向"] = wind[i];

dtWeather.Rows.Add(drWeather);

}

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

_dsWeather.dsWeather.Tables.Add(dtWeather);

_dsWeather.dsWeather.AcceptChanges();

//开始获取其它数据

//城市具体位置

//城市简介:

head = HTML.IndexOf("城市简介:",0);

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

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

catch(Exception e)

{

//DO Something

return _dsWeather;

}

}

//该类用于保存天气数据

public class weatherDataClass

{

public weatherDataClass()

{

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

}

public DataSet dsWeather;//天气数据

public string tel;//电话区号

public string zip;//邮政编码

public string cityDetail;//城市具体位置

public string cityDes;//城市介绍

public string liveDes;//生活指数

public string deaDes;//疾病指数

}

}

}