Java读取txt文件

 /**
     * 读取txt文本 按行读取
     *
     * @param file ：txt文本
     * @return ：内容字符串
     */
    public String txt2String(File file) {
        StringBuilder result = new StringBuilder();
        try {
            BufferedReader br = new BufferedReader(new FileReader(file));
            String s = null;
            while ((s = br.readLine()) != null) {
                result.append(System.lineSeparator() + s);
            }
            br.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result.toString();
    }