坐在旁边的小伙伴问我怎么用 java 将服务器上的压缩文件解压出来，我索性给他写了个 demo ，也顺手记录一下。亲测可用，如果觉得有帮助，欢迎点赞，评论，收藏，转发

java 实现解压 zip 压缩包

package com.yuhuofei.utils;import java.io.*;
import java.nio.charset.Charset;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;/*** @Description* @ClassName UnzipUtils* @Author yuhuofei* @Date 2022/8/10 21:03* @Version 1.0*/
public class UnzipUtils {/*** 解压zip压缩文件到指定目录** @param zipPath zip压缩文件绝对路径* @param descDir 指定的解压目录*/public static void unzipFile(String zipPath, String descDir) throws IOException {try {File zipFile = new File(zipPath);if (!zipFile.exists()) {throw new IOException("要解压的压缩文件不存在");}File pathFile = new File(descDir);if (!pathFile.exists()) {pathFile.mkdirs();}InputStream input = new FileInputStream(zipPath);unzipWithStream(input, descDir);} catch (Exception e) {throw new IOException(e);}}/*** 解压** @param inputStream* @param descDir*/public static void unzipWithStream(InputStream inputStream, String descDir) {if (!descDir.endsWith(File.separator)) {descDir = descDir + File.separator;}try (ZipInputStream zipInputStream = new ZipInputStream(inputStream, Charset.forName("GBK"))) {ZipEntry zipEntry;while ((zipEntry = zipInputStream.getNextEntry()) != null) {String zipEntryNameStr = zipEntry.getName();String zipEntryName = zipEntryNameStr;if (zipEntryNameStr.contains("/")) {String str1 = zipEntryNameStr.substring(0, zipEntryNameStr.indexOf("/"));zipEntryName = zipEntryNameStr.substring(str1.length() + 1);}String outPath = (descDir + zipEntryName).replace("\\\\", "/");File outFile = new File(outPath.substring(0, outPath.lastIndexOf('/')));if (!outFile.exists()) {outFile.mkdirs();}if (new File(outPath).isDirectory()) {continue;}writeFile(outPath, zipInputStream);zipInputStream.closeEntry();}System.out.println("======解压成功=======");} catch (IOException e) {System.out.println("压缩包处理异常，异常信息{}" + e);}}//将流写到文件中public static void writeFile(String filePath, ZipInputStream zipInputStream) {try (OutputStream outputStream = new FileOutputStream(filePath)) {byte[] bytes = new byte[4096];int len;while ((len = zipInputStream.read(bytes)) != -1) {outputStream.write(bytes, 0, len);}} catch (IOException ex) {System.out.println("解压文件时，写出到文件出错");}}//测试方法public static void main(String[] args) throws IOException {String zipPath = "D:/test/测试文件.zip";String descDir = "D:/test/解压/";unzipFile(zipPath, descDir);}
}

结果如下