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根据IP获取当地天气预报的实现

2007-03-02 16:25 555 查看

1<script language="Javascript">

2var city = new Array("安徽","黑龙江","山东","北京","湖北","山西","福建","湖南","陕西","甘肃","吉林","上海","广东","江苏","四川","广西","江西","天津","贵州","辽宁","西藏","海南","内蒙古","新疆","河北","宁夏","云南","河南","青海","浙江","重庆");

3var weaths = new Array('58321','50953','54823','54511','57494','53772','59134','57679','57036','52889','54172','58367','59287','58238','56294','59431','58606','54527','57816','54342','55591','52856','53463','51463','53698','53614','56778','57083','52866','58457','57516');

5function getCookieVal (offset) ...{

6 var endstr = document.cookie.indexOf (";", offset);

7 if (endstr == -1)

8 endstr = document.cookie.length;

9 return unescape(document.cookie.substring(offset, endstr));

10}

11function GetCookie (name) ...{

12 var arg = name + "=";

13 var alen = arg.length;

14 var clen = document.cookie.length;

15 var i = 0;

16 while (i < clen) ...{

17 var j = i + alen;

18 if (document.cookie.substring(i, j) == arg)

19 return getCookieVal (j);

20 i = document.cookie.indexOf(" ", i) + 1;

21 if (i == 0)

22 break;

23 }

24 return "";

25}

26function SetCookie(cookieName,cookieValue,nDays) ...{

27 var today = new Date();

28 var expire = new Date();

29 if (nDays==null || nDays==0) nDays=1;

30 expire.setTime(today.getTime() + 3600000*24*nDays);

31 document.cookie = cookieName+"="+escape(cookieValue) + ";path=/;domain=.163.com;expires="+expire.toGMTString();

32}

33function getCityWeatherID(cityname)...{

34 for(i=0;i<city.length;i++)...{

35 if(city[i]==cityname)...{

36 return weaths[i];

37 }

38 }

39 return "54511";

40}

42var NTES_WeatherAddr = GetCookie("NTES_WeatherAddr");

43if (!NTES_WeatherAddr)...{

44 var loc = GetCookie("theaddr");

45 if(!loc)...{

46 document.write("<script type='text/javascript' src='http://202.108.39.152/ipquery'><" + "/script>");

47 }

48}

49</script>

50<script>

51if (!NTES_WeatherAddr)...{

52 NTES_WeatherAddr=getCityWeatherID(loc);

53}

54window.location.href="http://news.163.com/weather/news/qx1/"+NTES_WeatherAddr+".html";

55</script>

上面的这段js实现了对来访者IP判断并给出了天气预报结果的链接。Js里的此链接: http://202.108.39.152/ipquery，起到的是判断用户所在地的作用，返回的是来访者所在地省份。

1<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" ResponseEncoding="GB2312" %>

2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

3<html xmlns="http://www.w3.org/1999/xhtml">

4<head runat="server">

5<title></title>

6<script>

7var city = new Array("安徽","黑龙江","山东","北京","湖北","山西","福建","湖南","陕西","甘肃","吉林","上海","广东","江苏","四川","广西","江西","天津","贵州","辽宁","西藏","海南","内蒙古","新疆","河北","宁夏","云南","河南","青海","浙江","重庆");

8var weaths = new Array('58321','50953','54823','54511','57494','53772','59134','57679','57036','52889','54172','58367','59287','58238','56294','59431','58606','54527','57816','54342','55591','52856','53463','51463','53698','53614','56778','57083','52866','58457','57516');

10var NTES_WeatherAddr = GetCookie("NTES_WeatherAddr");

11if (!NTES_WeatherAddr)...{

12 var loc = GetCookie("theaddr");

13 if(!loc)...{

14 document.write("<script type='text/javascript' src='http://202.108.39.152/ipquery'><" + "/script>");

15 }

16}

18function getCookieVal (offset) ...{

19 var endstr = document.cookie.indexOf (";", offset);

20 if (endstr == -1)

21 endstr = document.cookie.length;

22 return unescape(document.cookie.substring(offset, endstr));

23}

25function GetCookie (name) ...{

26 var arg = name + "=";

27 var alen = arg.length;

28 var clen = document.cookie.length;

29 var i = 0;

30 while (i < clen) ...{

31 var j = i + alen;

32 if (document.cookie.substring(i, j) == arg)

33 return getCookieVal (j);

34 i = document.cookie.indexOf(" ", i) + 1;

35 if (i == 0)

36 break;

37 }

38 return "";

39}

41function SetCookie(cookieName,cookieValue,nDays) ...{

42 var today = new Date();

43 var expire = new Date();

44 if (nDays==null || nDays==0) nDays=1;

45 expire.setTime(today.getTime() + 3600000*24*nDays);

46 document.cookie = cookieName+"="+escape(cookieValue) + ";path=/;domain=.163.com;expires="+expire.toGMTString();

47}

49//根据Ip服务器返回的省份名称获取对应的编号

50function getCityWeatherID(cityname)...{

51 for(i=0;i<city.length;i++)...{

52 if(city[i]==cityname)...{

53 return weaths[i];

54 }

55 }

56 return "57816";

57}

59//获取所在地天气预报结果的链接

60function getWeatherUrl()...{

61if (!NTES_WeatherAddr)...{

62 NTES_WeatherAddr=getCityWeatherID(loc);

64}

65var addr="http://news.163.com/weather/news/qx1/"+NTES_WeatherAddr+".html";

66document.form1.Text1.value=addr;

67}

69//客户端调用服务端方法实现对天气预报结果链接的页面内容进行解析,Anthem实现方式

70function showWeatherByAnthem() ...{

71 Anthem_InvokePageMethod("ShowWeatherByAnthem", [], getServerResult);

72}

74function getServerResult(result) ...{

75 document.getElementById("result").innerHTML = result.value;

76}

78//客户端调用服务端方法实现对天气预报结果链接的页面内容进行解析,_doPostBack实现方式

79function showWeatherBylink()

80...{

81 __doPostBack('LinkButton1','');

82}

84//客户端调用服务端方法实现对天气预报结果链接的页面内容进行解析,CallBack实现方式

85function showWeatherByCallBack()

86...{

87 var context=document.getElementById("result");

88 var weatherUrl=document.getElementById("Text1");

89 var arg="ShowWeatherByCall|" + weatherUrl.value;

90 <%= ClientScript.GetCallbackEventReference(this,"arg","outPutResult","context")%>;

91}

92function outPutResult(result)

93...{

94 document.getElementById("result").innerHTML = result;

96}

97</script>

98</head>

99<body onload="getWeatherUrl(),showWeatherByCallBack()">

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

101 <span id="result"></span>

102 <input id="Text1" type="hidden" runat="server" />

103 </form>

104</body>

105</html>

106

1using System;

2using System.Data;

3using System.Configuration;

4using System.Web;

5using System.Web.Security;

6using System.Web.UI;

7using System.Web.UI.WebControls;

8using System.IO;

9using System.Net;

10using Anthem;

12public partial class _Default : System.Web.UI.Page, ICallbackEventHandler

13...{

14 protected void Page_Load(object sender, EventArgs e)

15 ...{

16 Anthem.Manager.Register(this);

18 }

20 回调的固定格式回调的固定格式#region 回调的固定格式

21 public string str_content;

23 public void RaiseCallbackEvent(string the_string)

24 ...{

25 str_content = the_string;

26 }

28 /**//**//**//// <summary>

29 /**//// 回调,解析客户端的参数

30 /**//// </summary>

31 /**//// <returns></returns>

32 public string GetCallbackResult()

33 ...{

35 string[] parts = str_content.Split('|');

36 object[] theArgList = new object[parts.Length - 1];

37 for (int int_index = 1; int_index < parts.Length; int_index++)

38 theArgList[int_index - 1] = parts[int_index];

39 return (string)GetType().GetMethod(parts[0]).Invoke(this, theArgList);

40 }

41 #endregion

43 解析url的页面内容的方法体解析url的页面内容的方法体#region 解析url的页面内容的方法体

44 /**//**//**//// <summary>

45 /**//// Anthem方式,解析获取的url的页面内容

46 /**//// </summary>

47 /**//// <param name="url">url</param>

48 /**//// <returns>解析结果</returns>

49 [Anthem.Method]

50 public string ShowWeatherByAnthem()

51 ...{

53 WebRequest request = WebRequest.Create(Text1.Value);

54 request.Credentials = CredentialCache.DefaultCredentials;

55 HttpWebResponse response = (HttpWebResponse)request.GetResponse();

56 Stream dataStream = response.GetResponseStream();

57 StreamReader reader = new StreamReader(dataStream, System.Text.Encoding.Default);

58 string str = reader.ReadToEnd();

59 return str.Substring(220);

61 }

62 //<summary>

63 //回调方式,解析获取的url的页面内容

64 //</summary>

65 //<param name="url"></param>

66 //<returns></returns>

67 public string ShowWeatherByCall(string url)

68 ...{

69 WebRequest request = WebRequest.Create(url);

70 request.Credentials = CredentialCache.DefaultCredentials;

71 HttpWebResponse response = (HttpWebResponse)request.GetResponse();

72 Stream dataStream = response.GetResponseStream();

73 StreamReader reader = new StreamReader(dataStream, System.Text.Encoding.Default);

74 string str = reader.ReadToEnd();

75 return str.Substring(220);

77 }

78 #endregion

79}

客户端调用服务端的方法,__doPostBack方式，没有实现服务端的方法体，跟其余两种方式大致一样。当前是采用的CallBack方式调用服务端方法，如果想使用Anthem方式，更换onload里第二个function就可以了。

后台代码：

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