HttpURLConnection接收webApi返回的MP3字节流

最新推荐文章于 2025-05-30 14:47:04 发布

原创最新推荐文章于 2025-05-30 14:47:04 发布 · 1.1k 阅读

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CC 4.0 BY-SA版权

博客展示了WebAPI获取音频文件的代码，通过@GET注解定义接口，处理不同情况并返回响应。还给出了HttpURLConnection接收处理音频文件的代码，包括打开连接、读取数据、保存文件等操作，同时处理了异常情况。

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webapi

   @GET
   @Path("/{conferenceId}/voicedata/talkIndex/{talkIndex}.mp3")
   @Produces(MediaType.APPLICATION_OCTET_STREAM)
   @SuppressWarnings("resource")
   public Response getTapeFile(@QueryParam("userName")String userName,
           @PathParam("conferenceId")Integer conferenceId,
           @PathParam("talkIndex")String talkIndex) {

       FileInputStream fis = null;
       BaseResponse response = new BaseResponse();
       ErrorDetails error = new ErrorDetails();
       if (conferenceId > 999999) {
           error.setErrorDetailCode("");
           error.setErrorMessage("。");
           response.setErrorDetails(error);
           return Response.ok(response.convert2Json()).build();
       }
       try {
           if (ConferenceApi.class.getClassLoader().getResource(talkIndex + ".mp3") == null) {
               error.setErrorDetailCode("I");
               error.setErrorMessage("");
               response.setErrorDetails(error);
               return Response.ok(response.convert2Json()).build();
           }
           fis = new FileInputStream(new File(ConferenceApi.class.getClassLoader().getResource(talkIndex + ".mp3").getPath()));
           byte[] b = new byte[fis.available()];
           fis.read(b);
           return Response.ok(b)
   .header("Content-disposition","attachment;filename=" +"all.mp3")
   .header("Cache-Control", "no-cache").build();
       } catch (FileNotFoundException e) {
           e.printStackTrace();
           error.setErrorDetailCode("IL");
           error.setErrorMessage("。");
           response.setErrorDetails(error);
       }
       catch (IOException e) {
           e.printStackTrace();
           error.setErrorDetailCode("I");
           error.setErrorMessage("。");
           response.setErrorDetails(error);
       }
       return Response.ok(response.convert2Json()).build();
   }

HttpURLConnection 接收处理

public static void sendGetMp3File(HttpServletRequest request, String url, String talkIndex) {
   logger.info("Get URI:" + url);
       InputStream in = null;
       BufferedInputStream bfs = null;
       BufferedOutputStream bfo = null;
       try {
           URL realUrl = new URL(url);
           // openConnection
           HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
           conn.setRequestMethod("GET");

           in = conn.getInputStream();
           bfs = new BufferedInputStream(in);
           String targetDirPath = "assets" + File.separator + "uploaded";
           String savedDir = request.getSession().getServletContext().getRealPath(targetDirPath);
           File savedDirFile = new File(savedDir);
           if (!savedDirFile.exists() && !savedDirFile.isDirectory()) {
               savedDirFile.mkdir();
           }

           File writename = new File(savedDir, talkIndex + ".mp3");
           bfo = new BufferedOutputStream(new FileOutputStream(writename));
           int len = -1;
           byte[] b = new byte[1024*1024];
           while ((len = bfs.read(b)) != -1) {
               bfo.write(b, 0, len);
           }
           conn.disconnect();
           // onSuccess
       } catch (Exception e) {
           // onFail
           logger.error("HttpRequestUtil",e);
           e.printStackTrace();
       } finally {
           try {
               if (in != null) {
                   bfo.close();
                   bfs.close();
                   in.close();
               }
           } catch (IOException ex) {
               // undo
               ex.printStackTrace();
           }
       }
   }