android 获取天气信息，解决了乱码的问题

private static String getWeatherInfo3() {
try {
URL url = new URL("http://www.weather.com.cn/data/cityinfo/101060101.html");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
StringBuffer sb = new StringBuffer();
InputStreamReader input = new InputStreamReader(conn.getInputStream(),"utf-8");
Scanner inputStream = new Scanner(input);
while (inputStream.hasNext()){
sb.append(inputStream.nextLine());

}
System.out.println("weather3:"+sb.toString());
return sb.toString();

} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}