1、pom

引入解压相关压缩包：

<dependency>     <groupId>com.github.junrar</groupId>     <artifactId>junrar</artifactId>     <version>7.4.1</version> </dependency> <dependency>     <groupId>net.lingala</groupId>     <artifactId>zip4j</artifactId>     <version>1.3.3</version> </dependency>

2、工具类

编写工具类，实现对rar、zip压缩包的解压操作

import com.github.junrar.Archive;import com.github.junrar.rarfile.FileHeader;import net.lingala.zip4j.core.ZipFile;import org.slf4j.LoggerFactory;import org.slf4j.Logger;import java.io.File;import java.io.FileOutputStream;public class UnPackeUtil {    private static final Logger logger = LoggerFactory.getLogger(UnPackeUtil.class);    /     * zip文件解压     *     * @param destPath 解压文件路径     * @param zipFile  压缩文件     * @param password 解压密码(如果有)     */    public static void unPackZip(File zipFile, String password, String destPath) { try {     ZipFile zip = new ZipFile(zipFile);     /*zip4j默认用GBK编码去解压,这里设置编码为GBK的*/     zip.setFileNameCharset("GBK");     logger.info("begin unpack zip file....");     zip.extractAll(destPath);     // 如果解压需要密码     if (password != null) {  if (zip.isEncrypted()) {      zip.setPassword(password);  }     } } catch (Exception e) {     logger.error("解压失败：", e.getMessage(), e); }    }    /     * rar文件解压(不支持有密码的压缩包)     *     * @param rarFile  rar压缩包     * @param destPath 解压保存路径     */    public static void unPackRar(File rarFile, String destPath) { try (Archive archive = new Archive(rarFile)) {     if (null != archive) {  FileHeader fileHeader = archive.nextFileHeader();  File file = null;  while (null != fileHeader) {      // 防止文件名中文乱码问题的处理      String fileName = fileHeader.getFileNameW().isEmpty() ? fileHeader.getFileNameString() : fileHeader.getFileNameW();      if (fileHeader.isDirectory()) {   //是文件夹   file = new File(destPath + File.separator + fileName);   file.mkdirs();      } else {   //不是文件夹   file = new File(destPath + File.separator + fileName.trim());   if (!file.exists()) {if (!file.getParentFile().exists()) {    // 相对路径可能多级，可能需要创建父目录.    file.getParentFile().mkdirs();}file.createNewFile();   }   FileOutputStream os = new FileOutputStream(file);   archive.extractFile(fileHeader, os);   os.close();      }      fileHeader = archive.nextFileHeader();  }     } } catch (Exception e) {     logger.error("解压失败：", e.getMessage(), e); }    }}

3、功能实现

public class Test{private final static String ZIP_FILE = "application/zip";    private final static String RAR_FILE = "application/vnd.rar";public void uploadPack(MultipartFile uploadFile) { boolean isZipPack = true;// 解压目录 String packFileStr = "D:\\zip"; //不存在则创建 File packFile = new File(packFileStr); if (!packFile.exists()) {     boolean mkdirs = packFile.mkdirs(); } if (uploadFile== null) {     throw new RuntimeException("请上传文件"); } String contentType = uploadFile.getContentType(); String filename = uploadFile.getOriginalFilename(); //将压缩包保存在指定路径 String packFilePath = packFileStr + File.separator + filename; if (ZIP_FILE.equals(contentType)) {     //zip解压缩处理 } else if (RAR_FILE.equals(contentType)) {     //rar解压缩处理     isZipPack = false; } else {     throw new RuntimeException("上传的压缩包格式不正确,仅支持rar和zip压缩文件!"); } File file = new File(packFilePath); try {     zipFile.transferTo(file); } catch (IOException e) {     e.printStackTrace();     throw new RuntimeException("压缩文件到:" + packFileStr + " 失败!"); } if (isZipPack) {     //zip压缩包     UnPackeUtil.unPackZip(file, null, packFileStr); } else {     //rar压缩包     UnPackeUtil.unPackRar(file, packFileStr); } //获取压缩包名称 filename = filename.substring(0, filename.lastIndexOf(".")); System.out.println("解压成功，解压目录：" + packFilePath); //可以根据解压路径、压缩包名称、文件名称，取出对应文件进行操作    }}