IO

Path

获取整个工程根目录

String rootDirectory = System.getProperty("user.dir");
Path root = Paths.get(rootDirectory);
System.out.println(root.toString());

文件与目录

路径操作，读取目录结构,父目录，子目录，拼接目录

System.out.println(STR."parent dir:\{root.getParent().toString()}");
String[] children = root.toFile().list();

for (String dir : children) {
    Path pathResolve = root.resolve(dir);
    System.out.println(pathResolve.toString());
}

创建，写文件

Path demo = root.resolve("demo.txt");
Path file = Files.createFile(demo);
Files.writeString(file, "hello truman\n");
Files.writeString(file, "hello du\n", StandardOpenOption.APPEND);

读取文件，文件属性，复制文件

List<String> lines = Files.readAllLines(file);
for (String line : lines) {
    System.out.println(line);
}
BasicFileAttributeView fileAttributeView = Files.getFileAttributeView(file, BasicFileAttributeView.class);
BasicFileAttributes basicFileAttributes = fileAttributeView.readAttributes();
System.out.println(STR."file create time:\{basicFileAttributes.creationTime()}");
Files.copy(path, pathBackup);

try(Stream<Path>pathStream = Files.walk(root);) {
    pathStream.filter(path -> path.toString().endsWith(".txt")).forEach(System.out::println);
}

删除文件

Files.deleteIfExists(demo);

参考

Java 7 Files,Paths,Path 文件操作介绍

TrumanDu's Book

IO

Path

文件与目录

参考