读文件工具类

public class FileUtil {
    public static List<String> getLines(String fileName) {
        ArrayList<String> arrayList = new ArrayList();
        try (BufferedReader bf = new BufferedReader(new InputStreamReader(FileUtil.class.getClassLoader().getResourceAsStream(fileName)))) {
            String str;
            // 按行读取字符串
            while ((str = bf.readLine()) != null) {
                arrayList.add(str);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return arrayList;
    }

    public static String getContent(String fileName) {
        StringBuilder sb = new StringBuilder();
        try (BufferedReader bf = new BufferedReader(new InputStreamReader(FileUtil.class.getClassLoader().getResourceAsStream(fileName)))) {
            String str;
            // 按行读取字符串
            while ((str = bf.readLine()) != null) {
                sb.append(str);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return sb.toString();
    }
}