文件上传

来源：互联网发布：道教里的仙人知乎编辑：程序博客网时间：2024/06/03 16:37

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);            }        }      }

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