/**
     * 通過遞歸逐層刪除文件信息
     *
     * @param filePath
     */
    public static void deleteFileByIO(String filePath) {
        File file = new File(filePath);
        File[] list = file.listFiles();
        if (list != null) {
            for (File temp : list) {
                deleteFileByIO(temp.getAbsolutePath());
            }
        }
        file.delete();
    }

    /**
     * 使用Files.walk遍歷文件夾（包含子文件夾及子其文件），遍歷結(jié)果是一個(gè)Stream
     * 對(duì)每一個(gè)遍歷出來的結(jié)果進(jìn)行處理，調(diào)用Files.delete就可以了。
     *
     * @param filePath
     * @throws IOException
     */
    public static void deleteFileByStream(String filePath) throws IOException {
        Path path = Paths.get(filePath);
        try (Stream<Path> walk = Files.walk(path)) {
            walk.sorted(Comparator.reverseOrder())
                    .forEach(FileUtil::deleteDirectoryStream);
            // FileUtil為類名
        }
    }
    private static void deleteDirectoryStream(Path path) {
        try {
            Files.delete(path);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

 /**
     * 使用walkFileTree方法遍歷整個(gè)文件目錄樹，使用FileVisitor處理遍歷出來的每一項(xiàng)文件或文件夾
     * FileVisitor的visitFile方法用來處理遍歷結(jié)果中的“文件”，所以我們可以在這個(gè)方法里面刪除文件
     * @param filePath
     * @throws IOException
     */
    public static void deleteFileByWalkFileTree(String filePath) throws IOException {
        Path path = Paths.get(filePath);
        Files.walkFileTree(path,
                new SimpleFileVisitor<Path>() {
                    // 先去遍歷刪除文件
                    @Override
                    public FileVisitResult visitFile(Path file,
                                                     BasicFileAttributes attrs) throws IOException {
                        Files.delete(file);
                        System.out.printf("文件被刪除 : %s%n", file);
                        return FileVisitResult.CONTINUE;
                    }
                    // 再去遍歷刪除目錄
                    @Override
                    public FileVisitResult postVisitDirectory(Path dir,
                                                              IOException exc) throws IOException {
                        Files.delete(dir);
                        System.out.printf("文件夾被刪除: %s%n", dir);
                        return FileVisitResult.CONTINUE;
                    }
                }
        );
    }

//調(diào)用
 File file = new File("E:/河南省鄉(xiāng)鎮(zhèn)點(diǎn)/GIS/");
 deleteFile(file);
//刪除文件夾及其文件
    public static void deleteFile(File file){
        //獲取目錄下子文件
        File[] files = file.listFiles();
        //遍歷該目錄下的文件對(duì)象
        for (File f : files) {
            //打印文件名
            System.out.println("文件名：" + f.getName());
            //文件刪除
            f.delete();
        }
        boolean delete = file.delete();
        System.out.println(delete);
    }

//調(diào)用
 File file = new File("E:/河南省鄉(xiāng)鎮(zhèn)點(diǎn)/GIS/");
 forceDelete(file);
//強(qiáng)制刪除
    public static boolean forceDelete(File file) {
        boolean result = file.delete();
        int tryCount = 0;
        while (!result && tryCount++ < 10) {
            System.gc(); //回收資源
            result = file.delete();
        }
        return result;
    }

 Path path= Paths.get("E:\\河南省鄉(xiāng)鎮(zhèn)點(diǎn)\\GIS");
        Files.walkFileTree(path,new SimpleFileVisitor<>(){
            //遍歷刪除文件
            public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
                Files.delete(file);
                return FileVisitResult.CONTINUE;
            }
            //遍歷刪除目錄
            public FileVisitResult postVisitDirectory(Path dir,IOException exc) throws IOException{
                Files.delete(dir);
                return FileVisitResult.CONTINUE;
            }
        });