Java解压.7z格式压缩包

最新推荐文章于 2025-02-21 17:48:09 发布

转载最新推荐文章于 2025-02-21 17:48:09 发布 · 263 阅读

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CC 4.0 BY-SA版权

原文链接：https://my.oschina.net/pipimao/blog/1585521

文章标签：

#java #python

本文介绍了一个用于解压7z格式文件的Java工具类Un7zUtils，该工具支持带密码的7z文件解压，并详细展示了其实现过程。此外，还提供了一个递归删除文件夹的方法。

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package com.annet.upload.core.utils;

import java.io.File;
import java.io.FileOutputStream;
import java.io.RandomAccessFile;
import java.util.Arrays;

import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import net.sf.sevenzipjbinding.ExtractOperationResult;
import net.sf.sevenzipjbinding.IInArchive;
import net.sf.sevenzipjbinding.ISequentialOutStream;
import net.sf.sevenzipjbinding.SevenZip;
import net.sf.sevenzipjbinding.SevenZipException;
import net.sf.sevenzipjbinding.impl.RandomAccessFileInStream;
import net.sf.sevenzipjbinding.simple.ISimpleInArchive;
import net.sf.sevenzipjbinding.simple.ISimpleInArchiveItem;

public class Un7zUtils {

	private static Logger logger = LoggerFactory.getLogger(Un7zUtils.class);

	/**
	 * 
	 * @Description (解压7z)
	 * @param file7zPath(7z文件路径)
	 * @param outPutPath(解压路径)
	 * @param passWord(文件密码.没有可随便写,或空)
	 * @return
	 * @throws Exception
	 */
	public static int un7z(String file7zPath, final String outPutPath, String passWord) throws Exception {
		IInArchive archive;
		RandomAccessFile randomAccessFile;
		randomAccessFile = new RandomAccessFile(file7zPath, "r");
		archive = SevenZip.openInArchive(null, new RandomAccessFileInStream(randomAccessFile), passWord);
		int numberOfItems = archive.getNumberOfItems();
		ISimpleInArchive simpleInArchive = archive.getSimpleInterface();
		for (final ISimpleInArchiveItem item : simpleInArchive.getArchiveItems()) {
			final int[] hash = new int[] { 0 };
			if (!item.isFolder()) {
				ExtractOperationResult result;
				final long[] sizeArray = new long[1];
				result = item.extractSlow(new ISequentialOutStream() {
					public int write(byte[] data) throws SevenZipException {
						try {
							String str = item.getPath();
							str = str.substring(0, str.lastIndexOf(File.separator));
							File file = new File(outPutPath + File.separator + str + File.separator);
							if (!file.exists()) {
								file.mkdirs();
							}
							File file1 = new File(outPutPath + File.separator + item.getPath());
							IOUtils.write(data, new FileOutputStream(file1, true));
						} catch (Exception e) {
							e.printStackTrace();
						}
						hash[0] ^= Arrays.hashCode(data); // Consume data
						sizeArray[0] += data.length;
						return data.length; // Return amount of consumed
					}
				}, passWord);
				if (result == ExtractOperationResult.OK) {
					logger.error("解压成功...." + String.format("%9X | %10s | %s", hash[0], sizeArray[0], item.getPath()));
				} else {
					logger.error("解压失败：密码错误或者其他错误...." + result);
				}
			}
		}
		archive.close();
		randomAccessFile.close();

		return numberOfItems;
	}

	/**
	 * 递归删除文件夹
	 * 
	 * @param file
	 */
	public static void deleteFile(File file) {
		if (file.exists()) { // 判断文件是否存在
			if (file.isFile()) { // 判断是否是文件
				file.delete(); // 删除文件
			} else if (file.isDirectory()) { // 否则如果它是一个目录
				File[] files = file.listFiles(); // 声明目录下所有的文件 files[];
				for (int i = 0; i < files.length; i++) { // 遍历目录下所有的文件
					deleteFile(files[i]); // 把每个文件用这个方法进行迭代
				}
				file.delete(); // 删除文件夹
			}
		}
	}
}

Maven依赖jar

<dependency>
	<groupId>net.sf.sevenzipjbinding</groupId>
	<artifactId>sevenzipjbinding</artifactId>
	<version>9.20-2.00beta</version>
</dependency>

<dependency>
	<groupId>net.sf.sevenzipjbinding</groupId>
	<artifactId>sevenzipjbinding-all-platforms</artifactId>
	<version>9.20-2.00beta</version>
</dependency>

转载于:https://my.oschina.net/pipimao/blog/1585521