<!--文件压缩和解压工具类--><dependency><groupId>org.apache.ant</groupId><artifactId>ant</artifactId><version>1.7.1</version></dependency>

package com.example.demo.util;import lombok.extern.slf4j.Slf4j;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.Expand;
import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipOutputStream;import java.io.*;/*** 压缩文件和解压缩文件(公用工具类)** @author gblfy* @date 2020-10-12*/
@Slf4j
public class ZipReduceUtil {private static final int CACHE_SIZE = 1024;//文件读取缓冲区大小private static final String CHINESE_CHARSET = "GBK"; //使用GBK编码可以避免压缩中文文件名乱码//windows环境待压缩的文件路径public static final String wPath = "D:\\cmiip_Dir\\000000\\";//linux环境待压缩的文件路径public static final String linuxPath = "/app/cmiip_Dir/00000/";/*** 单元测试压缩*/public static void main(String[] args) {//应用待上传zip的前缀路径String localPath = "D:\\cmiip_Dir\\";//上传文件种类(类型)前缀String uploadPrefix = "S";//存量和增量标志String flag = "I";//批次号String batchNo = "0000000001";//待压缩的指定文件目录(文件夹)String wSourceFolder = wPath;// String lSourceFolder = linuxPath;//压缩文件统一处理ZipReduceDeal(localPath, uploadPrefix, batchNo, flag, wSourceFolder);}/*** 单元测试解压缩*/// public static void main(String[] args) throws Exception {//     ZipReduceUtil jzb = new ZipReduceUtil();////     String sourceZip = "D:\\cmiip_Dir\\S_I_0000000001_020.zip";//     String destDir = "D:\\cmiip_Dir\\";//     jzb.unZip(destDir, sourceZip);// }/*** 压缩文件夹为.zip到指定目录** @param localPath    应用待上传zip的前缀路径* @param uploadPrefix 上传文件种类(类型)前缀* @param batchNo      批次号* @param flag         存量和增量的标识* @param sourceFolder 压缩后的.zip绝对路径*/public static void ZipReduceDeal(String localPath, String uploadPrefix, String batchNo, String flag, String sourceFolder) {//将待压缩的指定文件目录(文件夹) 转换成文件类型的目录File fileNum = converFileTypeDir(sourceFolder);//获取压缩后指定文件夹下的long getlist = getlist(fileNum);//压缩完成后的zip的输出路径String zipOutputFilePath = localPath + uploadPrefix + "_" + flag + "_" + batchNo + "_0" + getlist + ".zip";//压缩完成后的zip的输出路径 转换成文件类型的目录File zipFilePath = converFileTypeDir(zipOutputFilePath);//开始压缩指定文件夹zip(sourceFolder, zipFilePath);}/*** 压缩文件** @param sourceFolder 压缩文件夹* @param zipFilePath  压缩文件输出路径*/public static void zip(String sourceFolder, File zipFilePath) {log.debug("待压缩的目录路径: {} 压缩后的zip包路径为: {}", sourceFolder, zipFilePath);OutputStream os = null;BufferedOutputStream bos = null;ZipOutputStream zos = null;try {os = new FileOutputStream(zipFilePath);bos = new BufferedOutputStream(os);zos = new ZipOutputStream(bos);// 解决中文文件名乱码zos.setEncoding(CHINESE_CHARSET);File file = new File(sourceFolder);String basePath = null;if (file.isDirectory()) {//压缩文件夹basePath = file.getPath();} else {basePath = file.getParent();}//压缩文件zipFile(file, basePath, zos);} catch (Exception e) {e.printStackTrace();} finally {try {if (zos != null) {zos.closeEntry();zos.close();}if (bos != null) {bos.close();}if (os != null) {os.close();}} catch (IOException e) {e.printStackTrace();}}}/*** 压缩文件** @param parentFile 待压缩文件夹* @param basePath* @param zos* @throws Exception*/private static void zipFile(File parentFile, String basePath, ZipOutputStream zos) throws Exception {File[] files = new File[0];if (parentFile.isDirectory()) {files = parentFile.listFiles();} else {files = new File[1];files[0] = parentFile;}String pathName;InputStream is;BufferedInputStream bis;byte[] cache = new byte[CACHE_SIZE];for (File file : files) {if (file.isDirectory()) {pathName = file.getPath().substring(basePath.length() + 1) + File.separator;zos.putNextEntry(new ZipEntry(pathName));zipFile(file, basePath, zos);} else {pathName = file.getPath().substring(basePath.length() + 1);is = new FileInputStream(file);bis = new BufferedInputStream(is);zos.putNextEntry(new ZipEntry(pathName));int nRead = 0;while ((nRead = bis.read(cache, 0, CACHE_SIZE)) != -1) {zos.write(cache, 0, nRead);}bis.close();is.close();}}}/*** 获取指定文件夹下的文件数量** @param f* @return*/public static long getlist(File f) {//递归求取目录文件个数log.debug("开始从 {} 路径下面获取指文件数量", f);long size = 0;File flist[] = f.listFiles();size = flist.length;for (int i = 0; i < flist.length; i++) {if (flist[i].isDirectory()) {size = size + getlist(flist[i]);size--;}}return size;}/*** 将String类型的目录转换为文件类型的目录** @param fileDir* @return*/public static File converFileTypeDir(String fileDir) {return new File(fileDir);}/*** 解压缩** @param destDir   解压缩后的目标目录   d:/cmiip_Dir* @param sourceZip 源zip文件      d:/cmiip_Dir/S_I_0000000001_020.zip*                  结果则是 将d:/cmiip_Dir/S_I_0000000001_020.zip文件解压缩到d:/cmiip_Dir目录下*/public void unZip(String destDir, String sourceZip) {try {Project prj1 = new Project();Expand expand = new Expand();expand.setProject(prj1);expand.setSrc(new File(sourceZip));expand.setOverwrite(false);//是否覆盖File f = new File(destDir);expand.setDest(f);expand.execute();} catch (Exception e) {e.printStackTrace();}}
}