ZipUtil

来源：互联网发布：linux计数统计文件命令编辑：程序博客网时间：2024/06/16 06:16
package com.mm.util.zip;import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.util.Enumeration;import org.apache.commons.compress.archivers.zip.Zip64Mode;import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream;import org.apache.commons.compress.archivers.zip.ZipFile;import org.apache.commons.compress.utils.IOUtils;public class ZipUtil {/** * 把多个文件或者文件夹压缩成zip *  * @param files *            文件集合 * @param zipFile *            压缩后文件 */public static void compress(File[] files, File zipFile) {if (files.length == 0) {return;}try {ZipArchiveOutputStream zipos = new ZipArchiveOutputStream(zipFile);zipos.setUseZip64(Zip64Mode.AsNeeded);// 将每个文件用ZipArchiveEntry封装for (File file : files) {if (file == null) {continue;}compressOneFile(file, zipos, "");}if (zipos != null) {zipos.close();}} catch (IOException e) {e.printStackTrace();}}/** * 压缩文件或者文件夹 *  * @param srcFile *            压缩文件 * @param destFile *            压缩后文件 * @throws IOException */public static void compress(File srcFile, File destFile) {ZipArchiveOutputStream zipos = null;try {zipos = new ZipArchiveOutputStream(new BufferedOutputStream(new FileOutputStream(destFile), 1024));compressOneFile(srcFile, zipos, "");} catch (IOException e) {e.printStackTrace();} finally {try {zipos.close();} catch (IOException e) {e.printStackTrace();}}}/** * 压缩文件或者文件夹 *  * @param srcPath *            源文件路径 * @param destPath *            压缩文件路径 */public static void compress(String srcPath, String destPath) {File srcFile = new File(srcPath);File destFile = new File(destPath);compress(srcFile, destFile);}/** * 压缩单个文件 *  * @param srcFile *            源文件 * @param zipos *            压缩文件的输出流 * @param dir *            在压缩包中的位置 * @throws IOException */private static void compressOneFile(File srcFile,ZipArchiveOutputStream zipos, String dir) throws IOException {// 对文件夹进行处理。if (srcFile.isDirectory()) {ZipArchiveEntry entry = new ZipArchiveEntry(dir + srcFile.getName()+ File.separator);zipos.putArchiveEntry(entry);zipos.closeArchiveEntry();// 循环文件夹中的所有文件进行压缩处理。String[] subFiles = srcFile.list();for (String subFile : subFiles) {File file = new File(srcFile.getPath() + File.separator+ subFile);String subDir = dir + srcFile.getName() + File.separator;compressOneFile(file, zipos, subDir);}} else {InputStream is = null;try {is = new BufferedInputStream(new FileInputStream(srcFile));ZipArchiveEntry entry = new ZipArchiveEntry(srcFile, dir+ srcFile.getName());zipos.putArchiveEntry(entry);IOUtils.copy(is, zipos);zipos.closeArchiveEntry();} finally {if (is != null) {is.close();}}}}/** * 解压zip包下所有文件 *  * @param file *            zip文件 * @param dir *            解压后目录 * @throws IOException */public static void decompressZip(File file, String dir) throws IOException {ZipFile zipFile = new ZipFile(file);InputStream is = null;OutputStream os = null;try {for (Enumeration<ZipArchiveEntry> entries = zipFile.getEntries(); entries.hasMoreElements();) {ZipArchiveEntry zipEntry = entries.nextElement();// 不存在则创建目标文件夹。File targetFile = new File(dir, zipEntry.getName());// 遇到根目录时跳过。if (zipEntry.getName().endsWith("/")) {continue;}// 如果文件夹不存在，创建文件夹。if (!targetFile.getParentFile().exists()) {targetFile.getParentFile().mkdirs();}is = zipFile.getInputStream(zipEntry);os = new FileOutputStream(targetFile);IOUtils.copy(is, os);}} finally {if (is != null) {is.close();}if (os != null) {os.close();}zipFile.close();}}/** * 解压zip包下某个文件 *  * @param file *            zip文件 * @param fileName *            文件名 * @param dir *            解压后存放目录 * @throws IOException */public static void decompressZip(File file, String fileName, String dir)throws IOException {// 不存在则创建目标文件夹。File targetFile = new File(dir, fileName);if (!targetFile.getParentFile().exists()) {targetFile.getParentFile().mkdirs();}ZipFile zipFile = new ZipFile(file);Enumeration<ZipArchiveEntry> zips = zipFile.getEntries();ZipArchiveEntry zip = null;InputStream is = null;OutputStream os = null;while (zips.hasMoreElements()) {zip = zips.nextElement();if (fileName.equals(zip.getName())) {try {is = zipFile.getInputStream(zip);os = new FileOutputStream(targetFile);IOUtils.copy(is, os);} finally {if (is != null) {is.close();}if (os != null) {os.close();}zipFile.close();}}}}public static void main(String[] args) {System.out.println("oj");}}
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