优雅写Java之三(IO与文本解析)

一、资源相关

二、路径与文件

读文件：

String fileName = "str.txt";
Files.lines(Paths.get(fileName), StandardCharsets.UTF_8).forEach(System.out::println);
List<String> out = Files.readAllLines(Paths.get(fileName));
// 按行读
private static void readFile(String fileName) throws IOException {
        BufferedReader br = new BufferedReader(new FileReader(new File(fileName)));
        String line;
        Set<String> readOnlyPath = new TreeSet<>();
        Set<String> otherPath= new TreeSet<>();
        while ((line = br.readLine()) != null) {
            System.out.println(line);
            getOpenPathList(line, readOnlyPath, otherPath);
        }
        br.close();
    }

写文件：

Files.write(Paths.get("output1.txt"), content.getBytes());

三、数据解析