【工具】文件处理

/**
     * @Description 按行读文件，每行加入List集合
     * @Param String
     * @return List<String>
     **/
	public static List<String> readFileByLines(String filename) {
		List<String> result = null;
		BufferedReader bufferedReader = null;
		ClassPathResource resource = new ClassPathResource(filename);
		if (resource.exists()) {
			try {
				result = new ArrayList<>();
				InputStream fileInputStream = resource.getInputStream();
				bufferedReader = new BufferedReader(new InputStreamReader(fileInputStream));
				String line;
				while ((line = bufferedReader.readLine()) != null) {
					result.add(line);
				}
			} catch (IOException e) {
				log.warn("readFileByLines() - io error !");
			} finally {
				if (bufferedReader != null) {
					try {
						bufferedReader.close();
					} catch (IOException e) {
						log.warn("readFileByLines() - close reader error !");
					}
				}
			}
		} else {
			log.warn("readFileByLines() - file is null, filename = " + filename);
		}
		return result;
	}