BIO与NIO读写文件对比

1. BIO: blocking input/output  同步阻塞

public static void fileTest() throws Exception { FileWriter fileWriter = new FileWriter(filePath, true); fileWriter.write("nihao"); fileWriter.close(); FileReader fileReader = new FileReader(filePath); BufferedReader bufferedReader = new BufferedReader(fileReader); StringBuffer bf = new StringBuffer(); String str; while ((str = bufferedReader.readLine()) != null) { bf.append(str + "\n"); } bufferedReader.close(); fileReader.close(); System.out.println(bf.toString()); }

2.NIO: 同步非阻塞

public static void fileNew() throws Exception { Files.write(Paths.get(filePath), "nihao".getBytes(StandardCharsets.UTF_8), StandardOpenOption.APPEND); byte[] data = Files.readAllBytes(Paths.get(filePath)); System.out.println(new String(data, StandardCharsets.UTF_8)); }