这篇博客将提供俩种方法，

1. 提前生成要压缩的多个文件，然后读取文件夹多层或一层去遍历压缩zip包
2. 直接用原始文件名称及二进制流，压缩返回zip包二进制流，中间不生成冗余文件；
   很明显方法2更优一些；
3. 解压zip文件或者zip文件流验证；

1. 效果图

压缩俩个文件到zip包，并分别解析zip包文件及zip二进制流，打印文件及文件内容详情效果图如下：

2. 源码

import java.io.*;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;public class FileUtil {public static void main(String[] args) throws Exception {long timeStamp = System.currentTimeMillis();String uuid = UUID.randomUUID().toString();// 生成本地文件，然后压缩，压缩完成清除本地文件及冗余文件夹zipTest1(uuid, timeStamp);// 不生成中间文件，直接使用文件名称+文件流进行压缩 更优zipTest2(uuid, timeStamp);}private static void zipTest2(String uuid, long timeStamp) throws IOException {String zipFileName = String.format("%s_%s.zip", uuid, timeStamp);String imgFileName = String.format("%s_%s_%s.json", "img", uuid, timeStamp);String referInfoFile = String.format("%s_%s_%s.json", "ref", uuid, timeStamp);String[] fileNames = new String[]{imgFileName, referInfoFile};List<byte[]> bytesList = new ArrayList<>();byte[] file0 = imgFileName.toString().getBytes();byte[] file1 = referInfoFile.toString().getBytes();bytesList.add(file0);bytesList.add(file1);// zip压缩流byte[] rodZip = packageZipToBytes(fileNames, bytesList);readAndParseZip(zipFileName, rodZip);}private static void zipTest1(String uuid, long timeStamp) throws Exception {String path = System.getProperty("user.dir") + File.separator + uuid + "_" + timeStamp + File.separator;String resPath = System.getProperty("user.dir") + File.separator + "out" + File.separator + uuid + "_" + timeStamp;deleteDirectory(path);delOrCreateDir(path);delOrCreateDir(resPath);String imgFileName = String.format("%s%s_%s_%s.json", path, "img", uuid, timeStamp);String referInfoFile = String.format("%s%s_%s_%s.json", path, "ref", uuid, timeStamp);try (FileWriter fileWriter = new FileWriter(referInfoFile)) {fileWriter.write(referInfoFile.toString());}try (FileWriter fileWriter = new FileWriter(imgFileName)) {fileWriter.write(imgFileName.toString());}System.out.println("zip start ---------------" + System.currentTimeMillis());FileUtil test3 = new FileUtil();String packagePath = path;  //选中的文件夹test3.packageZip(packagePath, resPath + ".zip");System.out.println("zip finish ---------------" + System.currentTimeMillis());// 删除冗余文件，文件夹deleteDirectory(path);deleteDirectory(resPath);deleteDirectory(resPath);}/*** 压缩多个文件为zip包文件流** @param fileNames 文件名称* @param byteLists 文件流* @return*/public static byte[] packageZipToBytes(String[] fileNames, List<byte[]> byteLists) throws IOException {ByteArrayOutputStream bos = new ByteArrayOutputStream();ZipOutputStream zipOutputStream = null;try {zipOutputStream = new ZipOutputStream(bos);for (int i = 0; i < fileNames.length; i++) {String fileName = fileNames[i];fileName = fileName.substring(fileName.lastIndexOf(File.separator) + 1);byte[] content = byteLists.get(i);// 依次对每个文件都压缩try {zipOutputStream.putNextEntry(new ZipEntry(fileName));zipOutputStream.write(content);} catch (IOException e) {throw new RuntimeException(e);}}zipOutputStream.close();bos.close();} catch (FileNotFoundException e) {throw new RuntimeException(e);} catch (IOException e) {throw new RuntimeException(e);}byte[] zipOutBytes = bos.toByteArray();
/*        OutputStream fos = new FileOutputStream("D:\\study\\ark-common-model\\out\\aaaaaaaa_1689583754986.zip");fos.write(zipOutBytes, 0, zipOutBytes.length);fos.close();*/return zipOutBytes;}private static void readAndParseZip(String zipFilePath, byte[] rodZip) {ByteArrayInputStream fis = null;FileInputStream fileInputStream = null;ZipInputStream zis = null;try {if (rodZip != null) {fis = new ByteArrayInputStream(rodZip);zis = new ZipInputStream(fis);} else {fileInputStream = new FileInputStream(zipFilePath);zis = new ZipInputStream(fileInputStream);}ZipEntry zipEntry = zis.getNextEntry();while (zipEntry != null) {// 如果该项是一个文件if (!zipEntry.isDirectory()) {String fileName = zipEntry.getName();ByteArrayOutputStream bos = new ByteArrayOutputStream();byte[] buffer = new byte[1024];int len;while ((len = zis.read(buffer)) > 0) {bos.write(buffer, 0, len);}// 将解压出的文件流输出到控制台String content = bos.toString();System.out.println("fileName: " + fileName + ",content: " + content);}zis.closeEntry();zipEntry = zis.getNextEntry();}zis.close();fis.close();} catch (IOException e) {e.printStackTrace();}}public static void delOrCreateDir(String imgPath) {File file = new File(imgPath);if (!file.getParentFile().exists()) {//上级目录不存在，创建上级目录file.getParentFile().mkdirs();} else {
//            FileUtils.deleteFolder(imgPath);}file.mkdirs();}/*** 根据路径删除指定的目录或文件，无论存在与否** @param sPath 要删除的目录或文件* @return 删除成功返回 true，否则返回 false。*/public static boolean deleteFolder(String sPath) {boolean flag = false;File file = new File(sPath);// 判断目录或文件是否存在if (!file.exists()) {  // 不存在返回 falsereturn flag;} else {// 判断是否为文件if (file.isFile()) {  // 为文件时调用删除文件方法return deleteFile(sPath);} else {  // 为目录时调用删除目录方法return deleteDirectory(sPath);}}}/*** 删除单个文件** @param sPath 被删除文件的文件名* @return 单个文件删除成功返回true，否则返回false*/public static boolean deleteFile(String sPath) {boolean flag = false;File file = new File(sPath);// 路径为文件且不为空则进行删除if (file.isFile() && file.exists()) {file.delete();flag = true;}return flag;}/*** 删除目录（文件夹）以及目录下的文件** @param sPath 被删除目录的文件路径* @return 目录删除成功返回true，否则返回false*/public static boolean deleteDirectory(String sPath) {boolean flag = false;//如果sPath不以文件分隔符结尾，自动添加文件分隔符if (!sPath.endsWith(File.separator)) {sPath = sPath + File.separator;}File dirFile = new File(sPath);//如果dir对应的文件不存在，或者不是一个目录，则退出if (!dirFile.exists() || !dirFile.isDirectory()) {return false;}flag = true;//删除文件夹下的所有文件(包括子目录)File[] files = dirFile.listFiles();for (int i = 0; i < files.length; i++) {//删除子文件if (files[i].isFile()) {flag = deleteFile(files[i].getAbsolutePath());if (!flag) {break;}} //删除子目录else {flag = deleteDirectory(files[i].getAbsolutePath());if (!flag) {break;}}}if (!flag) {return false;}//删除当前目录if (dirFile.delete()) {
//            dirFile.getParentFile().delete();return true;} else {
//            dirFile.getParentFile().delete();return false;}}public void packageZip(String filesPath, String resPath) throws Exception {// 要被压缩的文件夹File file = new File(filesPath);   //需要压缩的文件夹File zipFile = new File(resPath);ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(zipFile));isDirectory(file, zipOut, "", true);   //判断是否为文件夹zipOut.close();}public void isDirectory(File file, ZipOutputStream zipOutputStream, String filePath, boolean flag) throwsIOException {//判断是否为问加减if (file.isDirectory()) {File[] files = file.listFiles();  //获取该文件夹下所有文件(包含文件夹)filePath = flag == true ? file.getName() : filePath + File.separator + file.getName();   //首次为选中的文件夹，即根目录，之后递归实现拼接目录for (int i = 0; i < files.length; ++i) {//判断子文件是否为文件夹if (files[i].isDirectory()) {System.out.println("-----" + files[i].getName());//进入递归,flag置false 即当前文件夹下仍包含文件夹isDirectory(files[i], zipOutputStream, filePath, false);} else {System.out.println("fileName: " + files[i].getName());//不为文件夹则进行压缩InputStream input = new FileInputStream(files[i]);zipOutputStream.putNextEntry(new ZipEntry(files[i].getName()));int temp = 0;while ((temp = input.read()) != -1) {zipOutputStream.write(temp);}input.close();}}} else {//将子文件夹下的文件进行压缩InputStream input = new FileInputStream(file);zipOutputStream.putNextEntry(new ZipEntry(file.getPath()));int temp = 0;while ((temp = input.read()) != -1) {zipOutputStream.write(temp);}input.close();}}
}