170808、生成为CVS文件

/**
     * Desc : 生成为CVS文件
     * User : RICK
     * @param data  源数据List
     * @param map  csv文件的列表头map
     * @param outPutPath  文件路径
     * @param fileName  文件名称
     * Time : 2017/10/20 13:50
      */
    @SuppressWarnings("rawtypes")
    public static File createCVSFile(List data, LinkedHashMap map, String outPutPath, String fileName){
        File csvFile = null;
        BufferedWriter bufferedWriter = null;
        try {
            File file = new File(outPutPath);
            if (!file.exists()){
                file.mkdir();
            }
            //定义文件名格式并创建
            csvFile = File.createTempFile(fileName, ".cvs", new File(outPutPath));
            System.out.println("csvFile:" + csvFile);
            // UTF-8使正确读取分隔符","
            bufferedWriter = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(csvFile), "UTF-8"), 1024);
            // 写入文件头部
            for (Iterator propertyIterator = map.entrySet().iterator(); propertyIterator.hasNext();) {
                java.util.Map.Entry propertyEntry = (java.util.Map.Entry) propertyIterator.next();
                bufferedWriter.write((String) propertyEntry.getValue() != null ? new String(
                        ((String) propertyEntry.getValue()).getBytes("UTF-8"), "UTF-8") : "");
                if (propertyIterator.hasNext()) {
                    bufferedWriter.write(",");
                }
                System.out.println(new String(((String) propertyEntry.getValue()).getBytes("UTF-8"),
                        "UTF-8"));
            }
            bufferedWriter.write("\r\n");
            // 写入文件内容
            for (Iterator iterator = data.iterator(); iterator.hasNext();) {
                Object row = (Object) iterator.next();
                for (Iterator propertyIterator = map.entrySet().iterator(); propertyIterator
                        .hasNext();) {
                    java.util.Map.Entry propertyEntry = (java.util.Map.Entry) propertyIterator
                            .next();
                    bufferedWriter.write((String) BeanUtils.getProperty(row,
                            ((String) propertyEntry.getKey()) != null? (String) propertyEntry.getKey()
                                    : ""));
                    if (propertyIterator.hasNext()) {
                        bufferedWriter.write(",");
                    }
                }
                if (iterator.hasNext()) {
                    bufferedWriter.write("\r\n");
                }
            }
            bufferedWriter.flush();
        } catch(Exception e){
            e.printStackTrace();
        } finally {
            try {
                bufferedWriter.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return csvFile;
    }

    /**
     * Desc :  下载文件
     * User : RICK
     * @param response
     * @param csvFilePath 文件路径
     * @param fileName 文件名称
     * Time : 2017/10/20 13:53
      */
    public static void exportFile(HttpServletResponse response, String csvFilePath, String fileName)
            throws IOException {
        response.setContentType("application/csv;charset=GBK");
        response.setHeader("Content-Disposition",
                "attachment;  filename=" + new String(fileName.getBytes("GBK"), "ISO8859-1"));
        //URLEncoder.encode(fileName, "UTF-8")
        InputStream in = null;
        try {
            in = new FileInputStream(csvFilePath);
            int len = 0;
            byte[] buffer = new byte[1024];
            response.setCharacterEncoding("GBK");
            OutputStream out = response.getOutputStream();
            while ((len = in.read(buffer)) > 0) {
                //out.write(new byte[] { (byte) 0xEF, (byte) 0xBB, (byte) 0xBF });
                out.write(buffer, 0, len);
            }
        } catch (FileNotFoundException e) {
            System.out.println(e);
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
            }
        }
    }

    /**
     * Desc :  删除该目录filePath下的所有文件
     * User : RICK
     * @param filePath 文件目录路径
     * Time : 2017/10/20 13:53
      */
    public static void deleteFiles(String filePath) {
        File file = new File(filePath);
        if (file.exists()) {
            File[] files = file.listFiles();
            for (int i = 0; i < files.length; i++) {
                if (files[i].isFile()) {
                    files[i].delete();
                }
            }
        }
    }

    /**
     * Desc :  删除单个文件
     * User : RICK
     * @param filePath 文件目录路径
     * @param fileName 文件名称
     * Time : 2017/10/20 13:54
      */

    public static void deleteFile(String filePath, String fileName) {
        File file = new File(filePath);
        if (file.exists()) {
            File[] files = file.listFiles();
            for (int i = 0; i < files.length; i++) {
                if (files[i].isFile()) {
                    if (files[i].getName().equals(fileName)) {
                        files[i].delete();
                        return;
                    }
                }
            }
        }
    }public static void main(String[] args) {
        List exportData = new ArrayList<Map>();
        Map row1 = new LinkedHashMap<String, String>();
        row1.put("1", "rick");
        row1.put("2", "男");
        row1.put("3", "20");
        row1.put("4", "14000000000");
        exportData.add(row1);
        row1 = new LinkedHashMap<String, String>();
        row1.put("1", "anna");
        row1.put("2", "女");
        row1.put("3", "23");
        row1.put("4", "180123456789");
        exportData.add(row1);
        LinkedHashMap map = new LinkedHashMap();
        map.put("1", "姓名");
        map.put("2", "性别");
        map.put("3", "年龄");
        map.put("4", "手机号");

        String path = "D:/export/";
        String fileName = DateUtil.getYearMonthDay() + Constant.CharacterType.underline;
        File file = CvsUtil.createCVSFile(exportData, map, path, fileName);
        String fileName2 = file.getName();
        System.out.println("文件最终名称：" + fileName2);

    }