微信公众平台开发[12]-开发模式-接口-天气

天气接口也是一个很常用的接口，我使用的是中国天气网天气预报接口，市面上大都使用的是这个接口。

中国天气网提供了三个接口：
http://www.weather.com.cn/data/sk/101010100.html http://www.weather.com.cn/data/cityinfo/101010100.html http://m.weather.com.cn/data/101010100.html
第三个比较详细，另外需要注意的是，我们在查询的时候需要对应城市编码，城市编码对应表如下：

直辖市
"北京","上海","天津","重庆"
"101010100","101020100","101030100","101040100"

特别行政区
"香港","澳门"
"101320101","101330101"

黑龙江
"哈尔滨","齐齐哈尔","牡丹江","大庆","伊春","双鸭山","鹤岗","鸡西","佳木斯","七台河","黑河","绥化","大兴安岭"
"101050101","101050201","101050301","101050901","101050801","101051301","101051201","101051101","101050401","101051002","101050601","101050501","101050701"

吉林
"长春","延吉","吉林","白山","白城","四平","松原","辽源","大安","通化"
"101060101","101060301","101060201","101060901","101060601","101060401","101060801","101060701","101060603","101060501"

辽宁
"沈阳","大连","葫芦岛","盘锦","本溪","抚顺","铁岭","辽阳","营口","阜新","朝阳","锦州","丹东","鞍山"
"101070101","101070201","101071401","101071301","101070501","101070401","101071101","101071001","101070801","101070901","101071201","101070701","101070601","101070301"

内蒙古
"呼和浩特","呼伦贝尔","锡林浩特","包头","赤峰","海拉尔","乌海","鄂尔多斯","通辽"
"101080101","101081000","101080901","101080201","101080601","101081001","101080301","101080701","101080501"

河北
"石家庄","唐山","张家口","廊坊","邢台","邯郸","沧州","衡水","承德","保定","秦皇岛"
"101090101","101090501","101090301","101090601","101090901","101091001","101090701","101090801","101090402","101090201","101091101"

河南
"郑州","开封","洛阳","平顶山","焦作","鹤壁","新乡","安阳","濮阳","许昌","漯河","三门峡","南阳","商丘","信阳","周口","驻马店"
"101180101","101180801","101180901","101180501","101181101","101181201","101180301","101180201","101181301","101180401","101181501","101181701","101180701","101181001","101180601","101181401","101181601"

山东
"济南","青岛","淄博","威海","曲阜","临沂","烟台","枣庄","聊城","济宁","菏泽","泰安","日照","东营","德州","滨州","莱芜","潍坊"
"101120101","101120201","101120301","101121301","101120710","101120901","101120501","101121401","101121701","101120701","101121001","101120801","101121501","101121201","101120401","101121101","101121601","101120601"

山西
"太原","阳泉","晋城","晋中","临汾","运城","长治","朔州","忻州","大同","吕梁"
"101100101","101100301","101100601","101100401","101100701","101100801","101100501","101100901","101101001","101100201","101101101"

江苏
"南京","苏州","昆山","南通","太仓","吴县","徐州","宜兴","镇江","淮安","常熟","盐城","泰州","无锡","连云港","扬州","常州","宿迁"
"101190101","101190401","101190404","101190501","101190408","101190406","101190801","101190203","101190301","101190901","101190402","101190701","101191201","101190201","101191001","101190601","101191101","101191301"

安徽
"合肥","巢湖","蚌埠","安庆","六安","滁州","马鞍山","阜阳","宣城","铜陵","淮北","芜湖","毫州","宿州","淮南","池州"
"101220101","101221601","101220201","101220601","101221501","101221101","101220501","101220801","101221401","101221301","101221201","101220301","101220901","101220701","101220401","101221701"

陕西
"西安","韩城","安康","汉中","宝鸡","咸阳","榆林","渭南","商洛","铜川","延安"
"101110101","101110510","101110701","101110801","101110901","101110200","101110401","101110501","101110601","101111001","101110300"

宁夏
"银川","固原","中卫","石嘴山","吴忠"
"101170101","101170401","101170501","101170201","101170301"

甘肃
"兰州","白银","庆阳","酒泉","天水","武威","张掖","甘南","临夏","平凉","定西","金昌"
"101160101","101161301","101160401","101160801","101160901","101160501","101160701","101050204","101161101","101160301","101160201","101160601"

青海
"西宁","海北","海西","黄南","果洛","玉树","海东","海南"
"101150101","101150801","101150701","101150301","101150501","101150601","101150201","101150401"

湖北
"武汉","宜昌","黄冈","恩施","荆州","神农架","十堰","咸宁","襄阳","孝感","随州","黄石","荆门","鄂州"
"101200101","101200901","101200501","101201001","101200801","101201201","101201101","101200701","101200201","101200401","101201301","101200601","101201401","101200301"

湖南
"长沙","邵阳","常德","郴州","吉首","株洲","娄底","湘潭","益阳","永州","岳阳","衡阳","怀化","韶山","张家界"
"101250101","101250901","101250601","101250501","101251501","101250301","101250801","101250201","101250701","101251401","101251001","101250401","101251201","101250202","101251101"

浙江
"杭州","湖州","金华","宁波","丽水","绍兴","衢州","嘉兴","台州","舟山","温州"
"101210101","101210201","101210901","101210401","101210801","101210501","101211001","101210301","101210601","101211101","101210701"

江西
"南昌","萍乡","九江","上饶","抚州","吉安","鹰潭","宜春","新余","景德镇","赣州"
"101240101","101240901","101240201","101240301","101240401","101240601","101241101","101240501","101241001","101240801","101240701"

福建
"福州","厦门","龙岩","南平","宁德","莆田","泉州","三明","漳州"
"101230101","101230201","101230701","101230901","101230301","101230401","101230501","101230801","101230601"

贵州
"贵阳","安顺","赤水","遵义","铜仁","六盘水","毕节","凯里","都匀"
"101260101","101260301","101260208","101260201","101260601","101260801","101260701","101260501","101260401"

四川
"成都","泸州","内江","凉山","阿坝","巴中","广元","乐山","绵阳","德阳","攀枝花","雅安","宜宾","自贡","甘孜州","达州","资阳","广安","遂宁","眉山","南充"
"101270101","101271001","101271201","101271601","101271901","101270901","101272101","101271401","101270401","101272001","101270201","101271701","101271101","101270301","101271801","101270601","101271301","101270801","101270701","101271501","101270501"

广东
"广州","深圳","潮州","韶关","湛江","惠州","清远","东莞","江门","茂名","肇庆","汕尾","河源","揭阳","梅州","中山","德庆","阳江","云浮","珠海","汕头","佛山"
"101280101","101280601","101281501","101280201","101281001","101280301","101281301","101281601","101281101","101282001","101280901","101282101","101281201","101281901","101280401","101281701","101280905","101281801","101281401","101280701","101280501","101280800"

广西
"南宁","桂林","阳朔","柳州","梧州","玉林","桂平","贺州","钦州","贵港","防城港","百色","北海","河池","来宾","崇左"
"101300101","101300501","101300510","101300301","101300601","101300901","101300802","101300701","101301101","101300801","101301401","101301001","101301301","101301201","101300401","101300201"

云南
"昆明","保山","楚雄","德宏","红河","临沧","怒江","曲靖","思茅","文山","玉溪","昭通","丽江","大理"
"101290101","101290501","101290801","101291501","101290301","101291101","101291201","101290401","101290901","101290601","101290701","101291001","101291401","101290201"

海南
"海口","三亚","儋州","琼山","通什","文昌"
"101310101","101310201","101310205","101310102","101310222","101310212"

新疆
"乌鲁木齐","阿勒泰","阿克苏","昌吉","哈密","和田","喀什","克拉玛依","石河子","塔城","库尔勒","吐鲁番","伊宁"
"101130101","101131401","101130801","101130401","101131201","101131301","101130901","101130201","101130301","101131101","101130601","101130501","101131001"

西藏
"拉萨","阿里","昌都","那曲","日喀则","山南","林芝"
"101140101","101140701","101140501","101140601","101140201","101140301","101140401"

台湾
"台北","高雄"
"101340102","101340201"

这里我就不做整理转换了。

调用代码如下：

package weixin.intf;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class TianQiApi {

public static void main(String[] args) {
String urlStr;
String query;
String restr;
URL url;
HttpURLConnection connection;
BufferedReader br;
String line;
int index;

try {

query = "101130301";
urlStr = "http://m.weather.com.cn/data/" + query + ".html";

url = new URL(urlStr);// 创建连接
connection = (HttpURLConnection) url.openConnection();

connection.setUseCaches(false);
connection.setInstanceFollowRedirects(true);
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestMethod("GET"); // 设置请求方式
connection.connect();

br = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8"));
index = 0;

restr = "";
while ((line = br.readLine()) != null) {
if (index == 0) {
restr = line; // xml文件头部不能有回车或空格
} else {
restr += "\n" + line;
}
index++;
}

System.out.println( restr );

} catch (IOException e) {
e.printStackTrace();
}

}

}

返回结果是一串Json数据：

{
"weatherinfo": {
"city": "石河子",
"city_en": "shihezi",
"date_y": "2013年8月16日",
"date": "",
"week": "星期五",
"fchh": "11",
"cityid": "101130301",
"temp1": "29℃~15℃",
"temp2": "26℃~14℃",
"temp3": "27℃~14℃",
"temp4": "30℃~12℃",
"temp5": "30℃~14℃",
"temp6": "32℃~14℃",
"tempF1": "84.2℉~59℉",
"tempF2": "78.8℉~57.2℉",
"tempF3": "80.6℉~57.2℉",
"tempF4": "86℉~53.6℉",
"tempF5": "86℉~57.2℉",
"tempF6": "89.6℉~57.2℉",
"weather1": "多云",
"weather2": "多云转阵雨",
"weather3": "多云转阵雨",
"weather4": "晴",
"weather5": "多云",
"weather6": "晴转多云",
"img1": "1",
"img2": "99",
"img3": "1",
"img4": "3",
"img5": "1",
"img6": "3",
"img7": "0",
"img8": "99",
"img9": "1",
"img10": "99",
"img11": "0",
"img12": "1",
"img_single": "1",
"img_title1": "多云",
"img_title2": "多云",
"img_title3": "多云",
"img_title4": "阵雨",
"img_title5": "多云",
"img_title6": "阵雨",
"img_title7": "晴",
"img_title8": "晴",
"img_title9": "多云",
"img_title10": "多云",
"img_title11": "晴",
"img_title12": "多云",
"img_title_single": "多云",
"wind1": "微风",
"wind2": "微风转西风3-4级",
"wind3": "西风3-4级",
"wind4": "微风",
"wind5": "微风",
"wind6": "微风",
"fx1": "微风",
"fx2": "微风",
"fl1": "小于3级",
"fl2": "小于3级转3-4级",
"fl3": "3-4级",
"fl4": "小于3级",
"fl5": "小于3级",
"fl6": "小于3级",
"index": "热",
"index_d": "天气热，建议着短裙、短裤、短薄外套、T恤等夏季服装。",
"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。",
"index_uv": "弱",
"index48_uv": "弱",
"index_xc": "不宜",
"index_tr": "适宜",
"index_co": "较舒适",
"st1": "29",
"st2": "15",
"st3": "26",
"st4": "10",
"st5": "26",
"st6": "10",
"index_cl": "适宜",
"index_ls": "适宜",
"index_ag": "较易发"
}
}

上面json字符串我就不一一解释了，只解释“img”获取图片的地址为：http://m.weather.com.cn/img/c8.gif

c8.gif 替换“8”即可。