使用的是struts框架，调用结果返回出weatherResult【json格式】，再传到前台
public String getWeather() {
System.out.PRintln("hello weather");BufferedReader reader = null;StringBuffer sbf = new StringBuffer();String httpUrl = "http://apis.baidu.com/apix/idauth/idauth" + "?" + "name=刘坤&cardno=320921199108025071";try {URL url = new URL(httpUrl);HttpURLConnection connection = (HttpURLConnection) url.openConnection();connection.setRequestMethod("GET");// 填入apikey到HTTP headerconnection.setRequestProperty("apikey","3286167d75112ab25de8936c7a270b35");connection.connect();InputStream is = connection.getInputStream();reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));String strRead = null;while ((strRead = reader.readLine()) != null) {sbf.append(strRead);sbf.append("/r/n");}reader.close();weatherResult = sbf.toString();} catch (Exception e) {e.printStackTrace();}System.out.println(weatherResult);return SUCCESS;}
json数据示例：
{ "HeWeather data service 3.0": [{ "status": "ok", //接口状态，参考http://www.heweather.com/documents/api "basic": { //基本信息 "city": "故宫博物院", //景点名称 "cnty": "中国", //国家 "id": "CN10101010018A", //景点ID，参见http://www.heweather.com/documents/cn-attractions-list "lat": "116.39", //城市维度 "lon": "39.91", //城市经度 "update": { //更新时间，景点天气每天更新三次，分别为8、15、18点 "loc": "2015-07-02 08:10", //当地时间，如无特殊说明，以下时间均为当地时间 "utc": "2015-07-02 00:10" //UTC时间 } }, "daily_forecast": [ //7天预报 { "date": "2015-10-10", //预报日期，第一天 "astro": { //天文数值 "sr": "06:19", //日出时间 "ss": "17:43" //日落时间 }, "cond": { //天气状况，天气状况代码和图标，参考http://www.heweather.com/documents/condition-code "code_d": "101", //白天天气状况代码 "code_n": "101", //夜间天气状况代码 "txt_d": "多云", //白天天气状况描述 "txt_n": "多云" //夜间天气状况描述 }, "tmp": { //温度 "max": "16", //最高温度 "min": "10" //最低温度 }, "wind": { //风力风向 "dir": "北风", //风向 "sc": "3-4" //风力 } }, {......}//第二到第七天重复以上内容，略 ] } ]}本本参考http://apistore.baidu.com/apiworks/servicedetail/880.html，勿喷
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