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。"+"
");
                    }
                }else{
                    errStr.append("第"+allcount+"行目データは無効です。"+"
");
                }
            }
            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;
                }