Java中zip的壓縮和解壓縮的實現代碼

@Test
public void testCompressByZip() {
	try (
		//指定壓縮完成後zip文件的存儲路徑
		ZipOutputStream zipOutputStream = new ZipOutputStream(new FileOutputStream("F:\\myFavorites.zip"))
	)
	{
		//待壓縮文件/目錄所在的目錄
		File fileFolder = new File("F:\\我的收藏");
		//獲取目錄下的所有文件
		File[] files = fileFolder.listFiles();

		ZipEntry zipEntry;
		byte[] byteArray;
		int len;
		//遍歷目錄下的所有文件/目錄，並將它們添加到壓縮文件中
		for (File file : files) {
			//一個ZipEntry對應壓縮文件中的一項
			zipEntry = new ZipEntry(file.getName());
			zipOutputStream.putNextEntry(zipEntry);
			try (FileInputStream in = new FileInputStream(file)) {
				byteArray = new byte[1024];
				while ((len = in.read(byteArray)) != -1) {
					zipOutputStream.write(byteArray, 0, len);
				}
			} catch (IOException ex) {
				ex.printStackTrace();
			}
			zipOutputStream.closeEntry();
		}
	} catch (IOException ex) {
		ex.printStackTrace();
	}
}

@Test
public void testDecompressByZip() {
	try (
		//指定需要解壓縮的zip文件
		ZipInputStream zipInputStream = new ZipInputStream(new FileInputStream("F:\\myFavorites.zip"))
	)
	{
		ZipEntry zipEntry;
		byte[] byteArray;
		int len;
		//遍歷zip文件中的所有項，並逐個解壓到指定的目錄中
		while ((zipEntry = zipInputStream.getNextEntry()) != null) {
			try (FileOutputStream fileOutputStream = new FileOutputStream("F:\\我的解壓目錄\\" + zipEntry.getName())) {
				byteArray = new byte[1024];
				while ((len = zipInputStream.read(byteArray)) != -1) {
					fileOutputStream.write(byteArray, 0, len);
				}
			} catch (IOException ex) {
				ex.printStackTrace();
			}
		}
	} catch (IOException ex) {
		ex.printStackTrace();
	}
}

@Test
public void testDecompressByZip2(){
	try {
		//將壓縮文件作為一個文件系統訪問
		FileSystem fileSystem = FileSystems.newFileSystem(Paths.get("F:\\myFavorites.zip"), null);
		//遍歷壓縮文件中的內容，並使用文件訪問器訪問所有內容
		Files.walkFileTree(fileSystem.getPath("/"), new SimpleFileVisitor<Path>() {
			@Override
			public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
				System.out.println("訪問目錄中文件時調用");
				//將文件解壓到指定目錄
				Files.copy(file, new FileOutputStream("F:\\我的解壓目錄\\" + file.getName(file.getNameCount() - 1)));
				return FileVisitResult.CONTINUE;
			}

			@Override
			public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
				System.out.println("訪問目錄中文件之前調用");
				return FileVisitResult.CONTINUE;
			}

			@Override
			public FileVisitResult visitFileFailed(Path file, IOException exc) throws IOException {
				System.out.println("訪問目錄中文件失敗時調用");
				return FileVisitResult.SKIP_SUBTREE;
			}

			@Override
			public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
				System.out.println("訪問目錄中的文件及其所有後代之後調用");
				return FileVisitResult.CONTINUE;
			}
		});
	} catch (IOException ex) {
		ex.printStackTrace();
	}
}