List集合写到本地，生成文件

List集合中的数据写到本地

主要方法 及 生成文件方法

    private boolean PostFlie(String brand, List<Kpi> listKpis) {

        String year = String.valueOf(getCurrentYear());
        String monthString = String.format("%02d", getCurrentMonth() - 1);

        String fileName = brand.toUpperCase() + "KMF_";
        String endFileName = brand.toUpperCase() + "KMF_";
        java.text.DateFormat dateformat = new java.text.SimpleDateFormat("yyyyMMdd_hhmmss");
        String dateStr = dateformat.format(new Date());

        fileName = fileName + dateStr + ".dat";
        endFileName = endFileName + dateStr + ".end";
        ConfigLoader configLoader = ConfigLoader.getInstance();
        String filePath =  configLoader.getProperty(ConfigLoader.TAP_FILE_TO_LOCAL);
        StringBuffer buffer = new StringBuffer();
        for (Kpi kpi : listKpis) {
            buffer.append(kpi.getDealerCBU() + "|" + kpi.getDealerCKD() + "|"
                    + kpi.getServiceTypeEnum().getDisplayEnName() + "|"
                    + kpi.getTitleNameEN() + "|" + year + monthString + "|"
                    + kpi.getPerformance().getValueForReport()[0] + "|" + brand);
            buffer.append("
");
        }
        try {
            if (createDir(filePath)) {
                String dataFile = filePath + fileName;
                FileOutputStream out = new FileOutputStream(dataFile);
                log.info("postfile to local: __" + fileName + "__at:" + (new Date()).toString());
                
                byte[] contentInBytes = buffer.toString().getBytes("utf-8");
                out.write(contentInBytes);
                out.flush();
                out.close();
                out = null;
                buffer = null;
                
                String endFile = filePath + endFileName;
                out = new FileOutputStream(endFile);
                log.info("postfile to local: __" + endFileName + "__at:" + (new Date()).toString());
                out.close();
                out = null;
            } else {
                return false;
            }
        } catch (Exception e) {
            log.error("Exception when post file to local:", e);
            return false;
        } 
        return true;
    }

    private boolean createDir(String filePath) throws IOException {
        try {
            File file = new File(new String(filePath.getBytes("UTF-8"), "iso-8859-1"));
            if(!file.exists()){
                file.mkdir();
            }
        } catch (Exception e) {
            log.error("Exception when savepath to local", e);
            return false;
        }
        return true;
    }