文件上传

最新推荐文章于 2024-09-05 18:02:50 发布

鹤忧

最新推荐文章于 2024-09-05 18:02:50 发布

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分类专栏： Java

本文链接：https://blog.youkuaiyun.com/qq_37980436/article/details/65446308

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本文介绍了一个用于上传音频文件并将其转换为特定格式的方法。该方法首先保存原始音频文件，然后将其转换为 .wav 格式，并更新了相关记录。

保存音频并转换格式（转换音频另一篇内容）

public class FileUpload {



   //文件上传
   public static String uploadFile(MultipartFile file,String questionId ,String userId, HttpServletRequest request) throws IOException {
       String fileName = file.getOriginalFilename();
       String suff= fileName.substring(fileName.lastIndexOf("."), fileName.length());
       fileName = questionId+userId+suff;

       String filePath = Util.getProperty("uploadFile", "filePath");

       File tempFile = new File(filePath,  String.valueOf(fileName));
       if (!tempFile.getParentFile().exists()) {
           tempFile.getParentFile().mkdir();
       }
       if (!tempFile.exists()) {
           tempFile.createNewFile();
       }else{
           tempFile.delete();
       }
       file.transferTo(tempFile);

       return tempFile.getName();
   }

   //文件删除
   public static void deleteFile(String fileName ,  HttpServletRequest request) throws IOException {

       String filePath = Util.getProperty("uploadFile", "filePath");
       File tempFile = new File(filePath,  String.valueOf(fileName));
       if (tempFile.exists()) {
           tempFile.delete();
       }
   }
}

/**
     * 根据题目ID和用户ID保存语音文件并更新记录
     * @param file
     * @param questionId
     * @param userId
     * @throws Exception 
     */
    public void uploadFile(MultipartFile file, String questionId, String userId ,HttpServletRequest request) throws Exception {
        // TODO Auto-generated method stub
        if(!file.isEmpty()){
             //删除文件
            ExaminationScoreExample example = new ExaminationScoreExample();
            example.createCriteria().andExaminationQuestionsIdEqualTo(Integer.valueOf(questionId)).andUserIdEqualTo(Integer.valueOf(userId));
            List<ExaminationScore> examinationScoreList = examinationScoreMapper.selectByExample(example);
            if(examinationScoreList != null &&  examinationScoreList.size() > 0){
                 if(examinationScoreList.get(0)!=null && examinationScoreList.get(0).getAudioPath()!=null){
                       FileUpload.deleteFile( examinationScoreList.get(0).getAudioPath(), request);
                   }


                String filePath = FileUpload.uploadFile(file,questionId,userId+System.currentTimeMillis(), request);
                logger.info("filePath:" + filePath);

                 String wavFilePath= filePath.substring(0,filePath.lastIndexOf("."))+".wav";
                 String parentPath = Util.getProperty("uploadFile", "filePath");
                 PCM2WAV.convertAudioFiles(parentPath+filePath, parentPath+wavFilePath);
                 FileUpload.deleteFile( filePath, request);
                //更新记录
                ExaminationScore examinationScore = new ExaminationScore();
                examinationScore.setId(examinationScoreList.get(0).getId());
                examinationScore.setAudioPath(wavFilePath);
                examinationScore.setUpdateTime(new Date());
                examinationScoreMapper.updateByPrimaryKeySelective(examinationScore);
            }
        }  

    }