java上传文件，下载文件

1。上传文件
 1 protected int doTask(BaseForm form) throws AppException, FatalException, NoExistsException, GreaterMaxException {
         if(log.isDebugEnabled()) {
             log.debug("entering doTask ...");
         }
         //　UploadFormの取得
         UploadForm uploadForm = (UploadForm)form;
         FormFile uploadFile = uploadForm.getUploadFile();
         //アップロードファイルのデータが０件の場合
         if(uploadFile.getFileSize()==0){
             return CommonConst.RES_OK;
         }
         InputStreamReader isr;
         T101UpFileHis upFileHis = new T101UpFileHis();
         try {
             isr = new InputStreamReader(uploadFile.getInputStream());
             BufferedReader br = new BufferedReader(isr);
             String str = null;
             String[] contextArray;
             Set<String> set = new HashSet<String>();
             //総件数
             long allcount = 0;
             StringBuffer errStr = new StringBuffer("");
             while((str = br.readLine())!= null){
                 allcount++;
                 contextArray = str.split(",");
                 //データの項目数の判断
                 if(contextArray.length == 9 ){
                     //telNo
                     if(contextArray[0] != null && !"".equals(contextArray[0])){
                         set.add(contextArray[0]);
                     } else {
                         errStr.append("第"+allcount+"行目データは無効です。"+"\r\n");
                     }
                 }else{
                     errStr.append("第"+allcount+"行目データは無効です。"+"\r\n");
                 }
             }
             isr.close();
             br.close();

             ByteArrayInputStream errInputStream = null;
             if(!"".equals(errStr.toString())){
                 errInputStream = new ByteArrayInputStream(errStr.toString().getBytes());
             }
             upFileHis = setT101FromUpload(uploadForm, uploadFile, set, allcount,errInputStream);
             upFileHisDao.save(upFileHis);
         } catch (Exception e) {
             e.printStackTrace();
         }

         if(log.isDebugEnabled()) {
             log.debug("leaving doTask ...");
         }
         return CommonConst.RES_OK;
     }

2。下载文件

 if(funcID.equals(LineConst.FUNC_DOWNLOAD)){
                     this.csvTplDownloadSrv.doService(baseForm);
                     CsvFileRegForm csvFileRegForm = (CsvFileRegForm)baseForm;
                     List<M302PrcTpl> prcTplList=csvFileRegForm.getM302PrcTplList();
                     String tplStr="";
                     for (int i = 0; i < prcTplList.size(); i++) {
                         M302PrcTpl m302PrcTpl=prcTplList.get(i);
                         tplStr+=m302PrcTpl.getItemNM();
                         if(i<prcTplList.size()-1){
                             tplStr+=",";
                         }
                     }

                     String fileName=System.currentTimeMillis()+"_"+csvFileRegForm.getComProdId()+"_csvTPL.csv";
                     // エンコードの転換
                     fileName = URLEncoder.encode(fileName,LineConst.LIST_CREATE_DOWNLOAD_ENCODER);
                     OutputStream fos = response.getOutputStream();
                     BufferedOutputStream bos = new BufferedOutputStream(fos);
                     response.setContentType(CommonConst.CONST_RESPONSE_CONTENTTYPE);
                     response.setHeader(CommonConst.CONST_REQUEST_CONTENT_DISPOSITION, CommonConst.CONST_RESPONSE_ATTACHEMENT + fileName);
                     //bos.write(tplStr.getBytes());
                     bos.write(tplStr.getBytes(Charset.forName(LineConst.LIST_CREATE_DOWNLOAD_ENCODER)));

                     bos.flush();
                     fos.close();
                     bos.close();
                     return null;
                 }