// 使用stream方法实现    public static List<String> fileterData() throws IOException {        String file1Content = new String(Files.readAllBytes(Paths.get(".\\src\\main\\resources\\File1")));        String file2Content = new String(                Files.readAllBytes(Paths.get(".\\src\\main\\resources\\File2")));        // String 的 split方法有隐患，WINDOWS下换行符使用\r\n，Linux下使用的是\n        List<String> file1Str = Arrays.asList(file1Content.split("\r\n"));        List<String> file2Str= Arrays.asList(file2Content.split("\r\n"));        // 过滤收集，遍历file1,每个都在file2中进行检查一遍，如果file2中没有的就收集起来        List<String> filtedStr = file1Str.stream().filter(t -> false == file2Str.contains(t))                .collect(Collectors.toList());        return filtedStr;    }

    // 找出file1中有但是file2中没有的数据    public static List<String> filterData() throws IOException {        // TODO Auto-generated method stub        String file1Path = ".\\src\\main\\resources\\File1";        String file2Path = ".\\src\\main\\resources\\File2";        BufferedReader file1br = new BufferedReader(new FileReader(file1Path));        BufferedReader file2br = new BufferedReader(new FileReader(file2Path));        String line = "";        List<String> file2String= new ArrayList<>();        while ((line = file2br.readLine()) != null) {            file2String.add(line);        }        while ((line = file1br.readLine()) != null) {            if (false == file2String.contains(line)) {                System.out.println(line);            } else {                file2String.remove(line);            }        }return file2String;    }