求三天的天气预报代码

[天上下雨]

求三天的天气预报代码，要求可以传递城市名称的，而不是自己选择的那种~~~

[shine_fly]

直接找API

[沙伽more]

WCF

[小阳]

直接嵌入天气预报就OK啦

<iframe src="http://m.weather.com.cn/m/pn11/weather.htm?id=101010100T " style="border:1px #E6E2ED solid;padding-top:5px;padding-left:5px;" width="490" height="59" marginwidth="0" marginheight="0" hspace="0" vspace="0" frameborder="0" scrolling="no"></iframe>

你想定制哪里就把id改一下，这里是定制北京的

[天上下雨]

关键是这个城市是不定的，从数据库中取得城市名，然后显示这个城市3天的天气预报~

[flyerwing]

中国气象网好象很多站子都是有气象服务的了.

[天上下雨]

现在的好多都是城市已经固定了的，怎么才能找到不固定的呢？

[IE11下面经常卡到爆]

Google API就可以了，给你一个只取一天的例子，要取三天的读取后续的结点就行了，这是2.0的，你也可以用Linq读

using System;
using System.Web;
using System.Web.UI.WebControls;
using System.Net;
using System.Xml;

private const string _requestURL = @"http://www.google.com/ig/api?weather=";

        #region "Event Handlers"
        /// <summary> 
        /// Page_Load runs when the control is loaded 
        /// </summary> 
                protected void Page_Load(object sender, EventArgs e)
        {
            string city = Request.QueryString["City"] ?? "Beijing";
            ltCity.Text = "Today in " + city;
            XmlDocument xmlWeather = GoogleWeatherAPI_Parser(_requestURL + city);
            if (xmlWeather != null)
            {
                XmlNode current_conditions = xmlWeather.SelectSingleNode("xml_api_reply/weather/current_conditions");
                ltTemperature.Text = current_conditions.SelectSingleNode("temp_f").Attributes["data"].InnerText;
                imgWeather.ImageUrl = string.Format("{0}{1}", "http://www.google.com", current_conditions.SelectSingleNode("icon").Attributes["data"].InnerText);
            }
        }

        /// <summary>
        /// Request the weather xml result from the specified URL by GoogleWeatherAPI
        /// </summary>
        /// <param name="baseUrl"></param>
        /// <returns></returns>
        private static XmlDocument GoogleWeatherAPI_Parser(string baseUrl)
        {
            HttpWebRequest GWP_Request;
            HttpWebResponse GWP_Response = null;
            XmlDocument GWP_XMLdoc = null;
            try
            {
                GWP_Request = (HttpWebRequest)WebRequest.Create(string.Format(baseUrl));
                GWP_Request.UserAgent = @"Mozilla/5.0 (compatible; MSIE 8.0; Windows NT 6.1; en-US; Trident/5.0)";
                GWP_Response = (HttpWebResponse)GWP_Request.GetResponse();
                GWP_XMLdoc = new XmlDocument();
                GWP_XMLdoc.Load(GWP_Response.GetResponseStream());
            }
            finally
            {
                GWP_Response.Close();
            }
            return GWP_XMLdoc;
        }        
        #endregion

[IE11下面经常卡到爆]

<?xml version="1.0" ?> 
- <xml_api_reply version="1">
- <weather module_id="0" tab_id="0" mobile_row="0" mobile_zipped="1" row="0" section="0">
- <forecast_information>
  <city data="Beijing, Beijing" /> 
  <postal_code data="Beijing" /> 
  <latitude_e6 data="" /> 
  <longitude_e6 data="" /> 
  <forecast_date data="2011-03-10" /> 
  <current_date_time data="2011-03-10 22:00:00 +0000" /> 
  <unit_system data="US" /> 
  </forecast_information>
- <current_conditions>
  <condition data="Clear" /> 
  <temp_f data="61" /> 
  <temp_c data="16" /> 
  <humidity data="Humidity: 12%" /> 
  <icon data="/ig/images/weather/sunny.gif" /> 
  <wind_condition data="Wind: NW at 13 mph" /> 
  </current_conditions>
- <forecast_conditions>
  <day_of_week data="Thu" /> 
  <low data="30" /> 
  <high data="55" /> 
  <icon data="/ig/images/weather/sunny.gif" /> 
  <condition data="Clear" /> 
  </forecast_conditions>
- <forecast_conditions>
  <day_of_week data="Fri" /> 
  <low data="32" /> 
  <high data="53" /> 
  <icon data="/ig/images/weather/sunny.gif" /> 
  <condition data="Clear" /> 
  </forecast_conditions>
- <forecast_conditions>
  <day_of_week data="Sat" /> 
  <low data="41" /> 
  <high data="68" /> 
  <icon data="/ig/images/weather/mostly_sunny.gif" /> 
  <condition data="Mostly Sunny" /> 
  </forecast_conditions>
- <forecast_conditions>
  <day_of_week data="Sun" /> 
  <low data="32" /> 
  <high data="57" /> 
  <icon data="/ig/images/weather/mostly_sunny.gif" /> 
  <condition data="Partly Sunny" /> 
  </forecast_conditions>
  </weather>
  </xml_api_reply>

[andy_dyg]

www.webxmml.com.cn

从这里调用方法就可以了。

[linuxjava01]

Google的那个很强大。

[mohugomohu]

[Quote=引用 7 楼 dongxinxi 的回复:]

Google API就可以了，给你一个只取一天的例子，要取三天的读取后续的结点就行了，这是2.0的，你也可以用Linq读
C# code

using System;
using System.Web;
using System.Web.UI.WebControls;
using System.Net;
using System.Xml;

private const string _req……
[/Quote]mark

[天上下雨]

谢谢各位了，用google的API已经成功了~~
但后来用了其他的方法，但是还是学到了不少，谢谢拉~~~

[RUNBEAR]

支持楼上，GOOGLE好多API可以调用的。