QQ天气预报分析
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Net;
using System.IO;
namespace ArticleRelease
{
/// <summary>
/// WebForm1 的摘要说明。
/// </summary>
public class WebForm1 : System.Web.UI.Page
{
private void Page_Load(object sender, System.EventArgs e)
{
WebRequest wreq=WebRequest.Create
("http://weather.news.qq.com/inc/ss84.htm");
HttpWebResponse wresp=(HttpWebResponse)wreq.GetResponse();
string HTML ="";
Stream s=wresp.GetResponseStream();
//StreamReader objReader = new StreamReader(s);
StreamReader objReader = new StreamReader
(s,System.Text.Encoding.GetEncoding("gb2312"));
string sLine = "";
int i = 0;
while (sLine!=null)
{
i++;
sLine = objReader.ReadLine();
if (sLine!=null)
HTML += sLine;
}
//Response.Write(HTML);
//根据源文件分析,源文件如有改动,必须修改.
string city_templete = "<td height=\"23\" width=\"72\" align=\"center\" background=\"/images/r_tembg4.gif\" class=\"rb12\">";
string weather_templete = "<td height=\"23\" width=\"117\" background=\"/images/r_tembg5.gif\" align=\"center\">";
string others_templete ="57\" height=\"13\"></td><td height=\"23\" align=\"center\">";
System.Text.RegularExpressions.Regex regex_city =
new System.Text.RegularExpressions.Regex(city_templete);
System.Text.RegularExpressions.Regex regex_weather =
new System.Text.RegularExpressions.Regex(weather_templete);
System.Text.RegularExpressions.Regex regex_others =
new System.Text.RegularExpressions.Regex(others_templete);
System.Text.RegularExpressions.Match match_city =
regex_city.Match(HTML);
System.Text.RegularExpressions.Match match_weather =
regex_weather.Match(HTML);
System.Text.RegularExpressions.MatchCollection match_others =
regex_others.Matches(HTML);
string str;
if (match_city.Success)
{
//Response.Write("Found match_city at position " +
// match_city.Index +"<br>"); //输入匹配字符的位置
str = HTML.Substring(match_city.Index+city_templete.Length);
str = str.Substring(0,str.IndexOf("</td>"));
Response.Write("城市 : " + str + "<br>");
}
else
{
throw new ArgumentException("QQ天气预报源文件修改!");
}
if (match_weather.Success)
{
//Response.Write("Found match_weather at position "
//match_weather.Index + "<br>"); //输入匹配字符的位置
str = HTML.Substring(match_weather.Index+weather_templete.Length);
str = str.Substring(0,str.IndexOf("</td>"));
Response.Write("状况 : " + str + "<br>");
}
else
{
throw new ArgumentException("QQ天气预报源文件修改!");
}
if (match_others.Count == 4)
{
for(int j=0;j<4;j++)
{
//Response.Write("Found match_weather at position "
//+match_others[j].Index + "<br>"); //输入匹配字符的位置
str = HTML.Substring(match_others[j].Index
+others_templete.Length);
str = str.Substring(0,str.IndexOf("</td>"));
switch(j)
{
case 0:
Response.Write("温度 : " + str + "<br>");
break;
case 1:
Response.Write("风力 : " + str + "<br>");
break;
case 2:
Response.Write("紫外线 : " + str + "<br>");
break;
case 3:
Response.Write("风力 : " + str +"<br>");
break;
}
}
}
else
{
throw new ArgumentException("QQ天气预报源文件修改!");
}
}
#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.Load += new System.EventHandler(this.Page_Load);
}
#endregion
}
}