天气预报小偷

来源：互联网发布：pg数据库与oracle区别编辑：程序博客网时间：2024/04/30 05:18

公司制作内部网站，需要有个天气预报功能，但是普通用户只能内部网而不能访问外网，只有专用AD帐户可以通过代理访问外网；

以下asp.net(c#) 通过代理获取google天气预报的代码，过程如下：

1. 通过代理获取google天气预报的HTML代码；

2. 通过分析，提取出需要的天气预报代码；

********************************

ASPX:

***中国省市县联动下拉菜单代码请自己添加 ***

<body leftmargin="2" topmargin="2" onload="Init();" >


    <form id="form1" runat="server" >

<div>
    <select id="Select1" name="Select1" runat="server" onchange="selectCity();">
   <option value="" selected="true">省/直辖市</option>
</select>
    <select id="Select2" name="Select2" runat="server" onchange="selectCountry()">
  <option value="" selected="true">请选择</option>
</select>
        <asp:DropDownList ID="Select3" runat="server" AutoPostBack="True"
            onselectedindexchanged="DropDownList1_SelectedIndexChanged">
        </asp:DropDownList>
 </div>-

    <div align =left>
    <table>
        <tr>
        <td align=leftl>
         <asp:Label id="weathergoogle" runat="server">weathergoogle</asp:Label>
        </td>
        </tr>
    </table>
    </div>


    </form>

</body>

****************************************************************

CS：

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Net;
using System.Text.RegularExpressions;
using System.Xml;

namespace forcast
{
    public partial class weathergoole : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

            string domain = "";
            string username = "";
            string password = "";
            string ip = "";
            string port = "";
            string virtualdirectory = "";

            DataSet ds = new DataSet();
            ds.ReadXml(Server.MapPath("conf1q2w.xml"));
            DataTable table = ds.Tables[0];

            for (int index = 0; index < table.Rows.Count; index++)
            {
             domain = table.Rows[index]["domain"].ToString();
             username = table.Rows[index]["username"].ToString();
             password = table.Rows[index]["password"].ToString();
             ip = table.Rows[index]["ip"].ToString();
             port = table.Rows[index]["port"].ToString();
             virtualdirectory = table.Rows[index]["virtualdirectory"].ToString(); ;
            }

//以上通过读取xml获取代理的地址、端口、用户和密码。

            string item1 = Select1.Items[Select1.SelectedIndex].Value;
            //string item2 = Request.Form["Select2"];
            string item3 = Request.Form["Select3"];

string defaultarea = "xiamen";

            if (!string.IsNullOrEmpty(item3))
            {
                defaultarea = item3;
            }

//以上为从ASPX页面获取县市名称；

            WebProxy proxy = new WebProxy(ip, 8080);
            proxy.Credentials = new NetworkCredential(username, password, domain);
            proxy.BypassProxyOnLocal = true;

Uri forecastUrl = new Uri("http://www.google.cn/search?source=igchina&hl=zh-CN&rlz=1G1GGLQ_ZH-CNCN332&q=tq%2B"+defaultarea);

WebRequest wreq = WebRequest.Create(forecastUrl);

//goole天气地址http://www.google.cn/search?source=igchina&hl=zh-CN&rlz=1G1GGLQ_ZH-CNCN332&q=tq%2B"+defaultarea ， defaultare为默认天气预报区域

wreq.Proxy = proxy;

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

Stream s = wresp.GetResponseStream();

StreamReader objReader = new StreamReader(s, System.Text.Encoding.Default);

string HTML = objReader.ReadToEnd();

string sLine = "";
int i = 0;

            while (sLine != null)
            {
                i++;
                sLine = objReader.ReadLine();
                if (sLine != null)
                    HTML += sLine;
            }

String temp = "";
int start, stop;

start = HTML.IndexOf("<div class=e><table class=/"ts std/">", 0, HTML.Length);

stop = HTML.IndexOf("</div></table></div>", 0, HTML.Length);

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

            temp = temp.Replace("Ìí¼Óµ½ iGoogle", "");
            temp = temp.Replace(" - ", "");
            temp = temp.Replace("font-size:140%","");
            temp = temp.Replace("padding:5px", "padding:1px");

weathergoogle.Text = temp; //把天气预报代码显示到页面

}

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{

}

}
}

3. 效果