转载https://blog.csdn.net/weixin_39723544/article/details/80611810
工具类
import java.io.*;import java.util.zip.*;public class ZipUtils { /** * Default buff byte size * */ private static final int DEFAULT_BUFF_SIZE = 1024; /** * Default basedir value * */ private static final boolean DEFAULT_DIR = false; public static void decompress(String srcPath) throws Exception { decompress(new File(srcPath)); } public static void decompress(File srcFile) throws Exception { File baseFile = srcFile.getParentFile(); decompress(srcFile, baseFile); } public static void decompress(String srcPath, String destPath) throws Exception { decompress(new File(srcPath), new File(destPath)); } public static void decompress(File srcFile, File destFile) throws Exception { CheckedInputStream cis = new CheckedInputStream(new FileInputStream(srcFile), new CRC32()); ZipInputStream zis = new ZipInputStream(cis); doDecompress(destFile, zis); zis.close(); } private static void doDecompress(File destFile, ZipInputStream zis) throws Exception { ZipEntry zipEntry = null; while ((zipEntry = zis.getNextEntry()) != null) { String dir = destFile.getPath() + File.separator + zipEntry.getName(); File dirFile = new File(dir); fileProber(dirFile); if (zipEntry.isDirectory()) { dirFile.mkdirs(); } else { doDecompressFile(dirFile, zis); } zis.closeEntry(); } } private static void doDecompressFile(File destFile, ZipInputStream zis) throws Exception { BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(destFile)); int len; byte[] buff = new byte[DEFAULT_BUFF_SIZE]; while ((len = zis.read(buff, 0 ,DEFAULT_BUFF_SIZE)) != -1) { bos.write(buff, 0, len); } bos.close(); } /** * 文件探测 * * When the parent file not exist.Create it. * * @param dirFile * @throws Exception */ public static void fileProber(File dirFile) throws Exception { File parentFile = dirFile.getParentFile(); if (!parentFile.exists()) { fileProber(parentFile); parentFile.mkdirs(); } } public static void compress(String srcPath, String destPath,boolean dirFlag) throws Exception { compress(new File(srcPath), new File(destPath), dirFlag); } public static void compress(String srcPath, String destPath) throws Exception { compress(new File(srcPath), new File(destPath), DEFAULT_DIR); } public static void compress(File srcFile, File destFile, boolean dirFlag) throws Exception { compress(srcFile, new ZipOutputStream(new FileOutputStream(destFile)), dirFlag); } public static void compress(File srcFile, ZipOutputStream zos, boolean dirFlag) throws Exception { if (srcFile.isDirectory()) { if (dirFlag) { doCompress(zos, srcFile, srcFile.getName() + File.separator); } else { doCompress(zos, srcFile, ""); } } else { doCompress(zos, srcFile, ""); } zos.close(); } public static void doCompress(ZipOutputStream zos, File file, String baseDir) throws Exception { if (file.isDirectory()) { File[] files = file.listFiles(); for (int i = 0; i < files.length; i++) { doCompress(zos, files[i], baseDir); } } else { byte[] buff = new byte[DEFAULT_BUFF_SIZE]; InputStream in = new FileInputStream(file); zos.putNextEntry(new ZipEntry(baseDir + File.separator + file.getName())); int len; while ((len = in.read(buff,0 ,DEFAULT_BUFF_SIZE)) != -1) { zos.write(buff, 0, len); } in.close(); } }}}压缩
import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.InputStream;import java.util.zip.ZipEntry;import java.util.zip.ZipOutputStream;public class condense { private static final boolean DEFAULT_DIR = true; private static final int DEFAULT_BUFF_SIZE = 1024; // 压缩入口1 public static void compress(String srcPath, String destPath,boolean dirFlag) throws Exception { compress(new File(srcPath), new File(destPath), dirFlag); } // 压缩入口2 public static void compress(String srcPath, String destPath) throws Exception { compress(new File(srcPath), new File(destPath), DEFAULT_DIR); } // 压缩入口3 public static void compress(File srcFile, File destFile, boolean dirFlag) throws Exception { compress(srcFile, new ZipOutputStream(new FileOutputStream(destFile)), dirFlag); } public static void compress(File srcFile, ZipOutputStream zos, boolean dirFlag) throws Exception { // 需要解压的压缩文件对象 // 压缩输出流 // 是否在压缩文件时创建一个父文件夹后再压缩 if (srcFile.isDirectory()) { if (dirFlag) { doCompress(zos, srcFile, srcFile.getName() + File.separator); } else { doCompress(zos, srcFile, ""); } } else { doCompress(zos, srcFile, ""); } zos.close(); } public static void doCompress(ZipOutputStream zos, File file, String baseDir) throws Exception { if (file.isDirectory()) { // 递归循环，只压缩其中所有文件 File[] files = file.listFiles(); for (int i = 0; i < files.length; i++) { doCompress(zos, files[i], baseDir); } } else { // 进行文件压缩的操作 byte[] buff = new byte[DEFAULT_BUFF_SIZE]; InputStream in = new FileInputStream(file); zos.putNextEntry(new ZipEntry(baseDir + File.separator + file.getName())); int len; while ((len = in.read(buff,0 ,DEFAULT_BUFF_SIZE)) != -1) { zos.write(buff, 0, len); } in.close(); } }}
解压
import java.io.BufferedOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.util.zip.CRC32;import java.util.zip.CheckedInputStream;import java.util.zip.ZipEntry;import java.util.zip.ZipInputStream;public class decompress { /** * Default buff byte size */ private static final int DEFAULT_BUFF_SIZE = 1024; // 程序入口1 public static void decompress(String srcPath) throws Exception { decompress(new File(srcPath)); } // 程序入口2 public static void decompress(File srcFile) throws Exception { File baseFile = srcFile.getParentFile(); decompress(srcFile, baseFile); } // 程序入口3 public static void decompress(String srcPath, String destPath) throws Exception { decompress(new File(srcPath), new File(destPath)); } // 程序基本入口 public static void decompress(File srcFile, File destFile) throws Exception { CheckedInputStream cis = new CheckedInputStream(new FileInputStream(srcFile), new CRC32()); ZipInputStream zis = new ZipInputStream(cis); // 解压操作 doDecompress(destFile, zis); zis.close(); } private static void doDecompress(File destFile, ZipInputStream zis) throws Exception { ZipEntry zipEntry = null; while ((zipEntry = zis.getNextEntry()) != null) { String dir = destFile.getPath() + File.separator + zipEntry.getName(); File dirFile = new File(dir); // 如果父文件夹不存在，则递归创建其父文件夹 fileProbe(dirFile); if (zipEntry.isDirectory()) { // 如果zipEntry是目录，则创建目录 dirFile.mkdirs(); } else { // 解压压缩文件的其中具体的一个zipEntry对象 doDecompressFile(dirFile, zis); } zis.closeEntry(); } } // 一般意义上的文件复制操作 private static void doDecompressFile(File destFile, ZipInputStream zis) throws Exception { BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(destFile)); int len; byte[] buff = new byte[DEFAULT_BUFF_SIZE]; while ((len = zis.read(buff, 0 ,DEFAULT_BUFF_SIZE)) != -1) { bos.write(buff, 0, len); } bos.close(); } /** * 文件探测 * * When the parent file not exist.Create it. * * @param dirFile * @throws Exception */ public static void fileProbe(File dirFile) throws Exception { File parentFile = dirFile.getParentFile(); if (!parentFile.exists()) { fileProbe(parentFile); parentFile.mkdirs(); } }}