示例Java代码把多个文件用zip格式压缩成ByteArrayOutputStream并存成文件:
public static void main(String[] args) throws Exception { //压缩doc下所有的文件 File[] files = new File("/Users/Terry/Downloads/doc").listFiles(); assert files != null; ByteArrayOutputStream bos = zipFiles(files); File zipFile = new File("/Users/Terry/Downloads/test.zip"); //try with resource的方式,把ByteArrayOutputStream存成文件 try (OutputStream outputStream = new FileOutputStream(zipFile)) { bos.writeTo(outputStream); } } /** * 打包文件list成ByteArrayOutputStream */ private static ByteArrayOutputStream zipFiles(File... files) throws Exception { ByteArrayOutputStream bos = new ByteArrayOutputStream(); ZipOutputStream zos = new ZipOutputStream(bos); for (File file : files) { if (file != null) { try { addZipEntry(zos, file); } catch (Exception e) { e.printStackTrace(); } } } zos.close(); return bos; } /** * 把单个文件压缩到加入zos里 */ private static void addZipEntry(ZipOutputStream zos, File file) throws Exception { byte[] buffer = new byte[4096]; String fileName = file.getName(); //压缩包里的文件名,这里取的是文件的文件名,也可以自定义 ZipEntry zipEntry = new ZipEntry(fileName); zos.putNextEntry(zipEntry); FileInputStream fis = new FileInputStream(file); int len; while ((len = fis.read(buffer)) > 0) { zos.write(buffer, 0, len); } fis.close(); zos.closeEntry(); }
如何使用Java解压缩文件,请看:https://blog.terrynow.com/2021/07/02/java-unzip-file-how-to/
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