本文目录一览：

• 1、如何使用中国气象局API开发天气APP
• 2、android端免费获取天气信息的服务器接口有么
• 3、如何得到天气情况？在那个接口获取？

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《SmartWeatherAPILite WebAPI版接口使用说明书》

三、准备好areaid、type、date、appid、urlencode($key)（注意，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，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“

”下进行算法的检验

echo

urlencode(base64_encode(hash_hmac('sha1', " ;type=index_fdate=201409041509appid=15ds45s13a465s",

"46s4ds_SmartWeatherAPI_45s44d6",

TRUE)));

首先定义得到public_key和API的 *** ，还有就是对key进行encodeurl操作的 ***

注意，这里的 *** 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:@";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:@";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 *** ON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:@""];

// 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:N *** akeRange(0, 4)],[newDateOne

substringWithRange:N *** akeRange(4, 2)] ,[newDateOne

substringWithRange:N *** akeRange(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"}}

android端免费获取天气信息的服务器接口有么

中国国家气象局提供了获取所在城市天气预报信息接口。通过这个接口，我们就可以获取天气信息了。

关于获取天气预报的实例参考android学习手册，里面有源码。android学习手册包含9个章节，108个例子，源码文档随便看，例子都是可交互，可运行，源码采用android studio目录结构，高亮显示代码，文档都采用文档结构图显示，可以快速定位。360手机助手中下载,图标上有贝壳

中国国家气象局天气预报接口总共提供了三个：

注：上面接口2014.3.4日已不再更新。换成这个：。各位看34楼。在此感谢tdwll和黄晓佳cobish。

最详细的信息来自第三个接口。上面url中的101010100是城市代码，这里是北京的城市代码。只需要改变城市代码，就可以得到所在城市的天气信息。笔者在福州，所以选择的城市代码是福州101230101。

在浏览器上输入url：得到信息，天气信息是json的数据格式，数据如下：

{"weatherinfo":{"city":"福州","city_en":"fuzhou","date_y":"2012年5月14日","date":"","week":"星期一","fchh":"08","cityid":"101230101","temp1":"29℃~23℃","temp2":"26℃~20℃","temp3":"24℃~20℃","temp4":"25℃~20℃","temp5":"24℃~21℃","temp6":"25℃~22℃","tempF1":"84.2℉~73.4℉","tempF2":"78.8℉~68℉","tempF3":"75.2℉~68℉","tempF4":"77℉~68℉","tempF5":"75.2℉~69.8℉","tempF6":"77℉~71.6℉","weather1":"阵雨转中雨","weather2":"中雨转小雨","weather3":"小雨","weather4":"小雨","weather5":"小雨转阵雨","weather6":"阵雨转小雨","img1":"3","img2":"8","img3":"8","img4":"7","img5":"7","img6":"99","img7":"7","img8":"99","img9":"7","img10":"3","img11":"3","img12":"7","img_single":"3","img_title1":"阵雨","img_title2":"中雨","img_title3":"中雨","img_title4":"小雨","img_title5":"小雨","img_title6":"小雨","img_title7":"小雨","img_title8":"小雨","img_title9":"小雨","img_title10":"阵雨","img_title11":"阵雨","img_title12":"小雨","img_title_single":"阵雨","wind1":"微风","wind2":"微风","wind3":"微风","wind4":"微风","wind5":"微风","wind6":"微风","fx1":"微风","fx2":"微风","fl1":"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","index":"热","index_d":"天气较热，建议着短裙、短裤、短套装、T恤等夏季服装。年老体弱者宜着长袖衬衫和单裤。","index48":"暖","index48_d":"较凉爽，建议着长袖衬衫加单裤等春秋过渡装。年老体弱者宜着针织长袖衬衫、马甲和长裤。","index_uv":"弱","index48_uv":"最弱","index_xc":"不宜","index_tr":"适宜","index_co":"较不舒适","st1":"27","st2":"21","st3":"24","st4":"18","st5":"22","st6":"18","index_cl":"较不宜","index_ls":"不太适宜","index_ag":"不易发"}}

我们可以解析json数据去得到自己想用的天气信息。

天气信息解释：

[html] view plain copy print?

{

"weatherinfo":{

!-- 基本信息 --

"city":"福州",

"city_en":"fuzhou",

"date_y":"2012年5月14日",

"date":"",

"week":"星期一",

"fchh":"08",

"cityid":"101230101",

!-- 从今天开始到第六天的每天的天气情况，这里的温度是摄氏温度 --

"temp1":"29℃~23℃","temp2":"26℃~20℃","temp3":"24℃~20℃","temp4":"25℃~20℃","temp5":"24℃~21℃","temp6":"25℃~22℃",

!-- 从今天开始到第六天的每天的天气情况，这里的温度是华氏温度 --

"tempF1":"84.2℉~73.4℉","tempF2":"78.8℉~68℉","tempF3":"75.2℉~68℉","tempF4":"77℉~68℉","tempF5":"75.2℉~69.8℉","tempF6":"77℉~71.6℉",

!-- 天气描述 --

"weather1":"阵雨转中雨","weather2":"中雨转小雨","weather3":"小雨","weather4":"小雨","weather5":"小雨转阵雨","weather6":"阵雨转小雨",

!-- 天气描述图片序号 --

"img1":"3","img2":"8","img3":"8","img4":"7","img5":"7","img6":"99","img7":"7","img8":"99","img9":"7","img10":"3","img11":"3","img12":"7","img_single":"3",

!-- 图片名称 --

"img_title1":"阵雨","img_title2":"中雨","img_title3":"中雨","img_title4":"小雨","img_title5":"小雨","img_title6":"小雨","img_title7":"小雨","img_title8":"小雨","img_title9":"小雨","img_title10":"阵雨","img_title11":"阵雨","img_title12":"小雨","img_title_single":"阵雨",

!-- 风速描述 --

"wind1":"微风","wind2":"微风","wind3":"微风","wind4":"微风","wind5":"微风","wind6":"微风","fx1":"微风","fx2":"微风",

!-- 风速级别描述 --

"fl1":"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",

!-- 今天穿衣指数 --

"index":"热",

"index_d":"天气较热，建议着短裙、短裤、短套装、T恤等夏季服装。年老体弱者宜着长袖衬衫和单裤。",

!-- 48小时穿衣指数 --

"index48":"暖","index48_d":"较凉爽，建议着长袖衬衫加单裤等春秋过渡装。年老体弱者宜着针织长袖衬衫、马甲和长裤。",

!-- 紫外线及48小时紫外线 --

"index_uv":"弱","index48_uv":"最弱",

!-- 洗车 --

"index_xc":"不宜",

!-- 旅游 --

"index_tr":"适宜",、

!-- 舒适指数 --

"index_co":"较不舒适",

"st1":"27","st2":"21","st3":"24","st4":"18","st5":"22","st6":"18",

!-- 晨练 --

"index_cl":"较不宜",

!-- 晾晒 --

"index_ls":"不太适宜",

!-- 过敏 --

"index_ag":"不易发"

}

}

{

"weatherinfo":{

!-- 基本信息 --

"city":"福州",

"city_en":"fuzhou",

"date_y":"2012年5月14日",

"date":"",

"week":"星期一",

"fchh":"08",

"cityid":"101230101",

!-- 从今天开始到第六天的每天的天气情况，这里的温度是摄氏温度 --

"temp1":"29℃~23℃","temp2":"26℃~20℃","temp3":"24℃~20℃","temp4":"25℃~20℃","temp5":"24℃~21℃","temp6":"25℃~22℃",

!-- 从今天开始到第六天的每天的天气情况，这里的温度是华氏温度 --

"tempF1":"84.2℉~73.4℉","tempF2":"78.8℉~68℉","tempF3":"75.2℉~68℉","tempF4":"77℉~68℉","tempF5":"75.2℉~69.8℉","tempF6":"77℉~71.6℉",

!-- 天气描述 --

"weather1":"阵雨转中雨","weather2":"中雨转小雨","weather3":"小雨","weather4":"小雨","weather5":"小雨转阵雨","weather6":"阵雨转小雨",

!-- 天气描述图片序号 --

"img1":"3","img2":"8","img3":"8","img4":"7","img5":"7","img6":"99","img7":"7","img8":"99","img9":"7","img10":"3","img11":"3","img12":"7","img_single":"3",

!-- 图片名称 --

"img_title1":"阵雨","img_title2":"中雨","img_title3":"中雨","img_title4":"小雨","img_title5":"小雨","img_title6":"小雨","img_title7":"小雨","img_title8":"小雨","img_title9":"小雨","img_title10":"阵雨","img_title11":"阵雨","img_title12":"小雨","img_title_single":"阵雨",

!-- 风速描述 --

"wind1":"微风","wind2":"微风","wind3":"微风","wind4":"微风","wind5":"微风","wind6":"微风","fx1":"微风","fx2":"微风",

!-- 风速级别描述 --

"fl1":"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",

!-- 今天穿衣指数 --

"index":"热",

"index_d":"天气较热，建议着短裙、短裤、短套装、T恤等夏季服装。年老体弱者宜着长袖衬衫和单裤。",

!-- 48小时穿衣指数 --

"index48":"暖","index48_d":"较凉爽，建议着长袖衬衫加单裤等春秋过渡装。年老体弱者宜着针织长袖衬衫、马甲和长裤。",

!-- 紫外线及48小时紫外线 --

"index_uv":"弱","index48_uv":"最弱",

!-- 洗车 --

"index_xc":"不宜",

!-- 旅游 --

"index_tr":"适宜",、

!-- 舒适指数 --

"index_co":"较不舒适",

"st1":"27","st2":"21","st3":"24","st4":"18","st5":"22","st6":"18",

!-- 晨练 --

"index_cl":"较不宜",

!-- 晾晒 --

"index_ls":"不太适宜",

!-- 过敏 --

"index_ag":"不易发"

}

}

如何得到天气情况？在那个接口获取？

据我所知，气象局提供三个天气查询接口，如下：

1、实时天气接口

地址： sk/【城市代码】.html

例如：查询北京实时天气：

结果：

{"weatherinfo":{"city":"北京","cityid":"101010100","temp":"13","WD":"南风","WS":"2","SD":"59%","WSE":"2","time":"10:30","isRadar":"1","Radar":"JC_RADAR_AZ9010_JB"}}

2、今日天气接口

地址：【城市代码】.html

例如：查询北京今日天气：

结果：

{"weatherinfo":{"city":"北京","cityid":"101010100","temp1":"15","temp2":"5℃","weather":"阵雨转阴","img1":"d3.gif","img2":"n2.gif","ptime":"08:00"}}

3、今日及未来天气接口【内容最详细】

地址：【城市代码】.html

例如：查询北京今日及未来天气：

结果：

{"weatherinfo":{"city":"北京","city_en":"beijing","date_y":"2013年10月22日","date":"",

"week":"星期二","fchh":"08","cityid":"101010100","temp1":"15℃~5℃","temp2":"15℃~4℃……

…【省略】"index_tr":"适宜","index_co":"较舒适",

"st1":"11","st2":"1","st3":"13","st4":"5","st5":"14","st6":"4","index_cl":"较不宜",

"index_ls":"不太适宜","index_ag":"不易发"}}

参考：