中国气象网免费api(中国气象信息服务网)

网友投稿 414 2023-01-10

本篇文章给大家谈谈中国气象网免费api,以及中国气象信息服务网对应的知识点,希望对各位有所帮助,不要忘了收藏本站喔。 今天给各位分享中国气象网免费api的知识,其中也会对中国气象信息服务网进行解释,如果能碰巧解决你现在面临的问题,别忘了关注本站,现在开始吧!

本文目录一览:

如何使用中国气象局API开发天气APP

前期的准备工作:
一、申请API(拿好appid和private_key)

二、解读《SmartWeatherAPI<Lite WebAPI版接口使用说明书》

三、准备好areaid、type、date、appid、urlencode($key)(注意中国气象网免费api,这里经加密的key是需要encodeurl之后的才能成为接口链接的一部分)
好了下面的编码开始:
1、从附件中的areaid_list中找到你想要的地方的areaid,并且选择要查询天气的类型
NSString *areaid = @"101010100";
NSString *type =
@"index_f";
/**
* 官方文档更新的数据类型号
* 指数:index_f(基础接口);index_v(常规接口)
3天预报:forecast_f(基础接口);forecast_v(常规接口)
*
*/
2、获得当前天气date
NSDate
*_date = [NSDate date];
NSDateFormatter *dateFormatter =
[[NSDateFormatter alloc] init];
[dateFormatter
setDateFormat:@"yyyyMMddHHmmss"];//注意日期的格式
NSString *date =
[[dateFormatter stringFromDate:_date]
substringToIndex:12];//用到的精确到分中国气象网免费api,24小时制60分钟制
3、申请的appid,和private_key
NSString *appid =
@"15ds45s13a465s";//这里是楼主随便输入的,瞎编的
NSString *private_key =
@"46s4ds_SmartWeatherAPI_45s44d6";//也是瞎编的
4、算出经过urlencode后的key,这步比较重要,步骤也多,请耐心看完。
在原来的的基础上是在PHP的环境中算出的,代码如下,可在“
http://writecodeonline.com/php/ ”下进行算法的检验
echo
urlencode(base64_encode(hash_hmac('sha1', " http://open.weather.com.cn/data/?areaid=101010100type=index_fdate=201409041509appid=15ds45s13a465s",
"46s4ds_SmartWeatherAPI_45s44d6",
TRUE)));
首先定义得到public_key和API的方法,还有就是对key进行encodeurl操作的方法
注意,这里的方法都是被我定义在getTime的类里面,后面是在main中实例化出来的
//获得publicky
- (NSString*)
getPublicKey:(NSString*)areaid :(NSString*)type :(NSString*)date
:(NSString*)appid {

NSString *Key = [[NSString alloc]
initWithFormat:@"http://open.weather.com.cn/data/?areaid=%@type=%@date=%@appid=%@",
areaid, type, [date substringToIndex:12], appid];

return
Key;
}
//获得完整的API
- (NSString*) getAPI:(NSString*)areaid
:(NSString*)type :(NSString*)date :(NSString*)appid :(NSString*)key
{

NSString *API = [[NSString alloc]
initWithFormat:@"http://open.weather.com.cn/data/?areaid=%@type=%@date=%@appid=%@key=%@",
areaid, type, [date substringToIndex:12], [appid substringToIndex:6],
key];
//-------------这里需要主要的是只需要appid的前6位!!!

return
API;

}
//将获得的key进性urlencode操作
- (NSString
*)stringByEncodingURLFormat:(NSString*)_key{
NSString *encodedString
= (__bridge NSString
*)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,(CFStringRef)_key,
nil, (CFStringRef) @"!$'()*+,-./:;=?@_~%#[]",
kCFStringEncodingUTF8);
//由于ARC的存在,这里的转换需要添加__bridge,原因我不明。求大神讲解
return
encodedString;

}
重点来了,在oc下的算法如下,记得把附件的Base64.h
加进来并引用到工程里面
//对publickey和privatekey进行加密
- (NSString *)
hmacSha1:(NSString*)public_key :(NSString*)private_key{

NSData*
secretData = [private_key
dataUsingEncoding:NSUTF8StringEncoding];
NSData* stringData = [public_key
dataUsingEncoding:NSUTF8StringEncoding];

const void* keyBytes =
[secretData bytes];
const void* dataBytes = [stringData
bytes];

///#define CC_SHA1_DIGEST_LENGTH 20 /* digest
length in bytes */
void* outs =
malloc(CC_SHA1_DIGEST_LENGTH);

CCHmac(kCCHmacAlgSHA1, keyBytes,
[secretData length], dataBytes, [stringData length], outs);

//
Soluion 1
NSData* signatureData = [NSData dataWithBytesNoCopy:outs
length:CC_SHA1_DIGEST_LENGTH freeWhenDone:YES];

return
[signatureData
base64EncodedString];

}
这里只是初步算出来的key,还未encodeurl,链接不能被浏览器识别,所以现在经过算法得到的_key还有一步操作才能的到真正的key。
NSString *_key = [getTime hmacSha1:[getTime
getPublicKey:areaid :type :date :appid] :private_key];
NSString *key =
[getTime
stringByEncodingURLFormat:_key];
最后一步了吧!拼接API
NSString *weatherAPI = [getTime getAPI:areaid :type :date
:appid
:key];
//OK,我们的API就可以用啦。
最后,通过API返回的值是JSON文件,通过解析,就能得到我们想要的数据了,下面拿一个开发的接口举例
NSDictionary *weatherDic = [getTime
getWeatherDic:@"http://www.weather.com.cn/data/cityinfo/101010100.html"];

// weatherDic字典中存放的数据也是字典型,从它里面通过键值取值
NSDictionary
*weatherInfo = [weatherDic
objectForKey:@"weatherinfo"];
NSLog(@"今天是 %@ %@ %@ 的天气状况是:%@ %@ -
%@",[newDateOne substringWithRange:NSMakeRange(0, 4)],[newDateOne
substringWithRange:NSMakeRange(4, 2)] ,[newDateOne
substringWithRange:NSMakeRange(6, 2)],[weatherInfo
objectForKey:@"weather"],[weatherInfo objectForKey:@"temp1"],[weatherInfo
objectForKey:@"temp2"]);
输出:2014-09-04 23:40:23.243
WeatherAPP[5688:201108] 今天是 2014-09-04 的天气状况是:晴 17℃ - 30℃
weatherInfo字典里面的内容是---{"weatherinfo":{"city":"北京","cityid":"101010100","temp1":"17℃","temp2":"30℃","weather":"晴","img1":"n0.gif","img2":"d0.gif","ptime":"18:00"}}

国内有哪些城市较完整可以免费使用的天气 API 接口

因微信公共号提供城市天气预报服务,发现网山天气预报接口和环境数据接口方面资料比较乱,而且有不少内容已经失效,下面内容由过程日志整理形成,希望可用得上。
一 天气预报
国内的天气预报数据,主要是国家气象局和国外两个来源(指数据来源)。
国外方面主要是雅虎(XML格式,谷歌已经停掉了自家的天气API);
国内数据由国家气象局提供(JSON格式)。
在知乎看到过一篇专业人士评论,雅虎可以提供全球范围的且非常精细的天气数据(小时级更新),但主要是通过计算机自动生成。而国家气象局则是各地经验丰富的专家人士结合计算机综合分析得出,在准确性上更胜一筹。我就这样信了!
国家气象局接口资源及用法
气象局的天气预报主页:移动版普通版 ,仔细挖掘这两个地址可以发现很多好东西哦。
特点:接口多,来自weather.com.cn和mobile.weather.com.cn都有,次数不限制,服务稳定,功能全面,优先推荐。
1. 实时天气接口
有多个接口,好像差别不大:
实时天气1:http://www.weather.com.cn/data/sk/101190408.html
实时天气2:http://www.weather.com.cn/data/cityinfo/101190408.html
实时天气3(带时间戳):http://mobile.weather.com.cn/data/sk/101010100.html?_=1381891661455
2. 一周天气预报接口
7天预报数据 URL: http://mobile.weather.com.cn/data/forecast/101010100.html?_=1381891660081
该接口来源气象局移动版网站,目测数据最为精确,详细接口格式如下:
{"c":{"c1":"101010100","c2":"beijing","c3":"北京","c4":"beijing","c5":"北京","c6":"beijing","c7":"北京","c8":"china","c9":"中国","c10":"1","c11":"010","c12":"100000","c13":"116.391","c14":"39.904","c15":"33","c16":"AZ9010","c17":"+8"},
"f":{"f1":
[
{"fa":"01","fb":"03","fc":"10","fd":"5","fe":"0","ff":"0","fg":"0","fh":"0","fi":"06:21|17:40"},
{"fa":"07","fb":"07","fc":"19","fd":"12","fe":"0","ff":"0","fg":"0","fh":"0","fi":"06:22|17:38"},
{"fa":"02","fb":"00","fc":"15","fd":"5","fe":"8","ff":"8","fg":"3","fh":"1","fi":"06:23|17:37"},
{"fa":"00","fb":"00","fc":"16","fd":"4","fe":"0","ff":"0","fg":"0","fh":"0","fi":"06:24|17:35"},
{"fa":"00","fb":"00","fc":"18","fd":"7","fe":"0","ff":"0","fg":"0","fh":"0","fi":"06:25|17:34"},
{"fa":"00","fb":"01","fc":"18","fd":"8","fe":"0","ff":"0","fg":"0","fh":"0","fi":"06:26|17:32"},
{"fa":"01","fb":"01","fc":"16","fd":"6","fe":"0","ff":"0","fg":"0","fh":"0","fi":"06:27|17:31"}],
"f0":"201310121100"}}
详细接口分析如下:
//格式说明
var format={fa:图片1,fb:图片2,fc:温度1,fd:温度2,fe:风向1,ff:风向2,fg:风力1,fh:风力2,fi:日出日落};
//定义天气类型
var weatherArr={"00":"晴","01":"多云","02":"阴","03":"阵雨","04":"雷阵雨","05":"雷阵雨伴有冰雹","06":"雨夹雪","07":"小雨","08":"中雨","09":"大雨","10":"暴雨","11":"大暴雨","12":"特大暴雨","13":"阵雪","14":"小雪","15":"中雪","16":"大雪","17":"暴雪","18":"雾","19":"冻雨","20":"沙尘暴","21":"小到中雨","22":"中到大雨","23":"大到暴雨","24":"暴雨到大暴雨","25":"大暴雨到特大暴雨","26":"小到中雪","27":"中到大雪","28":"大到暴雪","29":"浮尘","30":"扬沙","31":"强沙尘暴","53":"霾","99":""};
//定义风向数组
var fxArr={"0":"无持续风向","1":"东北风","2":"东风","3":"东南风","4":"南风","5":"西南风","6":"西风","7":"西北风","8":"北风","9":"旋转风"};
//定义风力数组
var flArr={"0":"微风","1":"3-4级","2":"4-5级","3":"5-6级","4":"6-7级","5":"7-8级","6":"8-9级","7":"9-10级","8":"10-11级","9":"11-12级"};
6天预报数据 URL: http://m.weather.com.cn/data/101190408.html
该接口来源网络,应该是一个流传比较久的接口,大发现准确性和稳定性可能不稳定。接口分析如下:
{"weatherinfo":{
#基本信息
"city":"北京","city_en":"beijing","date_y":"2013年9月24日","date":"","week":"星期二","fchh":"11","cityid":"101010100",
#6天温度范围
"temp1":"22℃~11℃","temp2":"25℃~11℃","temp3":"26℃~13℃","temp4":"25℃~15℃","temp5":"25℃~16℃","temp6":"24℃~16℃",
#6天温度范围(华氏)
"tempF1":"71.6℉~51.8℉","tempF2":"77℉~51.8℉","tempF3":"78.8℉~55.4℉","tempF4":"77℉~59℉","tempF5":"77℉~60.8℉","tempF6":"75.2℉~60.8℉",
#6天天气
"weather1":"多云转晴","weather2":"晴","weather3":"晴","weather4":"晴转多云","weather5":"阴转阵雨","weather6":"多云",
#6天天气图示(每天2张)
"img1":"1","img2":"0","img3":"0","img4":"99","img5":"0","img6":"99","img7":"0","img8":"1","img9":"2","img10":"3","img11":"1","img12":"99",
"img_single":"1",
#6天天气图示文字(每天2)
"img_title1":"多","img_title2":"晴","img_title3":"晴","img_title4":"晴","img_title5":"晴","img_title6":"晴","img_title7":"晴","img_title8":"多云","img_title9":"阴","img_title10":"阵雨","img_title11":"多云","img_title12":"多云",
"img_title_single":"多云",
#6天风
"wind1":"北风3-4级转微风","wind2":"微风","wind3":"微风","wind4":"微风","wind5":"微风","wind6":"微风",
"fx1":"北风","fx2":"微风",
#6天风力情况
"fl1":"3-4级转小于3级","fl2":"小于3级","fl3":"小于3级","fl4":"小于3级","fl5":"小于3级","fl6":"小于3级",
#24小时内
"index":"较冷","index_d":"建议着大衣、呢外套加毛衣、卫衣等服装。体弱者宜着厚外套、厚毛衣。因昼夜温差较大,注意增减衣服。",
#48小时内
"index48":"较舒适","index48_d":"建议着薄外套或牛仔衫裤等服装。年老体弱者宜着夹克衫、薄毛衣等。昼夜温差较大,注意适当增减衣服。",
#紫外 洗车 旅游 舒适指数 晨练 晾晒 过敏
"index_uv":"弱",
"index48_uv":"强",
"index_xc":"适宜",
"index_tr":"适宜",
"index_co":"舒",
"st1":"21","st2":"12","st3":"24","st4":"12","st5":"25","st6":"14", #不明
"index_cl":"较适宜",
"index_ls":"适宜",
"index_ag":"极易发"
}}

免费的天气预报Api有哪些

现在好的免费天气预报API还真找不到了,14年之前国家气象局的天气预报API还开放着,现在没了。。
聚合数据上的全国天气预报API不错
还有就是雅虎天气,好久之前用过,现在不知道怎么样了,你可以试试 关于中国气象网免费api和中国气象信息服务网的介绍到此就结束了,不知道你从中找到你需要的信息了吗 ?如果你还想了解更多这方面的信息,记得收藏关注本站。 中国气象网免费api的介绍就聊到这里吧,感谢你花时间阅读本站内容,更多关于中国气象信息服务网、中国气象网免费api的信息别忘了在本站进行查找喔。

版权声明:本文内容由网络用户投稿,版权归原作者所有,本站不拥有其著作权,亦不承担相应法律责任。如果您发现本站中有涉嫌抄袭或描述失实的内容,请联系我们jiasou666@gmail.com 处理,核实后本网站将在24小时内删除侵权内容。

上一篇:java boolean占用内存大小说明
下一篇:Spring中注解方式的异步请求
相关文章

 发表评论

暂时没有评论,来抢沙发吧~