java微信server录音下载到自己server

/** * @author why * */public class VoiceDownload { /** *  * 依据文件id下载文件 *  *  *  * @param mediaId *  *   媒体id *  * @throws Exception */ public static InputStream getInputStream(String accessToken, String mediaId) { InputStream is = null; String url = "http://file.api.weixin.qq.com/cgi-bin/media/get?access_token=" + accessToken + "&media_id=" + mediaId; try { URL urlGet = new URL(url); HttpURLConnection http = (HttpURLConnection) urlGet  .openConnection(); http.setRequestMethod("GET"); // 必须是get方式请求 http.setRequestProperty("Content-Type",  "application/x-www-form-urlencoded"); http.setDoOutput(true); http.setDoInput(true); System.setProperty("sun.net.client.defaultConnectTimeout", "30000");// 连接超时30秒 System.setProperty("sun.net.client.defaultReadTimeout", "30000"); // 读取超时30秒 http.connect(); // 获取文件转化为byte流 is = http.getInputStream(); } catch (Exception e) { e.printStackTrace(); } return is; } /** *  * 获取下载图片信息（jpg） *  *  *  * @param mediaId *  *   文件的id *  * @throws Exception */ public static void saveImageToDisk(String accessToken, String mediaId, String picName, String picPath) throws Exception { InputStream inputStream = getInputStream(accessToken, mediaId); byte[] data = new byte[10240]; int len = 0; FileOutputStream fileOutputStream = null; try { fileOutputStream = new FileOutputStream(picPath+picName+".amr"); while ((len = inputStream.read(data)) != -1) { fileOutputStream.write(data, 0, len); } } catch (IOException e) { e.printStackTrace(); } finally { if (inputStream != null) { try {  inputStream.close(); } catch (IOException e) {  e.printStackTrace(); } } if (fileOutputStream != null) { try {  fileOutputStream.close(); } catch (IOException e) {  e.printStackTrace(); } } } }}