获取百度天气信息

//获取链接
URL url = new URL("http://api.map.baidu.com/telematics/v3/weather?location=guangzhou&output=JSON&ak=XXX");
//打开链接
URLConnection conn = url.openConnection();
//设置访问超时
conn.setConnectTimeout(1000);
//获取返回流数据
BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));

String line = null;
//创建流装载容器
StringBuilder sb = new StringBuilder();
//读取返回内容
while((line = br.readLine())!=null){
     sb.append(line);
}
String datas = sb.toString();