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使用 commons-compress 实现 Java 压缩解压缩 zip 文件

创建时间: 8-28 10:42

修改时间: 8-28 10:44

浏览: 8

首先引入依赖

<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-compress -->
<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-compress</artifactId>
    <version>1.26.2</version>
</dependency>

新建一个工具类:

import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
import org.apache.commons.compress.archivers.zip.ZipArchiveInputStream;
import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream;
import org.apache.commons.compress.utils.IOUtils;

import java.io.*;
import java.nio.file.*;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.Objects;

public class ZipUtils {

    /**
     * 将文件压缩成zip
     *
     * @param sourceFile 需要压缩的目录 /temp/file
     * @param targetFile 压缩文件地址 /temp/file.zip
     */
    public static void compress(String sourceFile, String targetFile) throws FileNotFoundException {
        long d1 = System.currentTimeMillis();
        FileOutputStream fos = new FileOutputStream(targetFile);
        try (ZipArchiveOutputStream aos = new ZipArchiveOutputStream(fos)) {
            Path dirPath = Paths.get(sourceFile);
            Files.walkFileTree(dirPath, new SimpleFileVisitor<Path>() {
                @Override
                public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
                    ZipArchiveEntry entry = new ZipArchiveEntry(dir.toFile(), dirPath.relativize(dir).toString());
                    aos.putArchiveEntry(entry);
                    aos.closeArchiveEntry();
                    return super.preVisitDirectory(dir, attrs);
                }

                @Override
                public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
                    ZipArchiveEntry entry = new ZipArchiveEntry(
                            file.toFile(), dirPath.relativize(file).toString());
                    aos.putArchiveEntry(entry);
                    Files.copy(file, aos);
                    aos.closeArchiveEntry();
                    return super.visitFile(file, attrs);
                }
            });
        } catch (IOException e) {
            System.out.println("压缩失败,原因:" + e.getMessage());
        }
        System.out.println("压缩完毕,耗时:" + (System.currentTimeMillis() - d1) + " ms");
    }

    /**
     * 将zip文件解压到指定目录
     *
     * @param zipPath 源文件 /temp/file.zip
     * @param descDir 解压目录 /temp/fileCopy
     */
    public static void uncompress(String zipPath, String descDir) {
        long d1 = System.currentTimeMillis();
        try (InputStream fis = Files.newInputStream(Paths.get(zipPath));
             InputStream bis = new BufferedInputStream(fis);
             ZipArchiveInputStream ais = new ZipArchiveInputStream(bis)
        ) {
            ZipArchiveEntry entry;
            while (Objects.nonNull(entry = ais.getNextEntry())) {
                if (!ais.canReadEntryData(entry)) {
                    continue;
                }
                String name = descDir + File.separator + entry.getName();
                File f = new File(name);
                if (entry.isDirectory()) {
                    if (!f.isDirectory() && !f.mkdirs()) {
                        f.mkdirs();
                    }
                } else {
                    File parent = f.getParentFile();
                    if (!parent.isDirectory() && !parent.mkdirs()) {
                        throw new IOException("failed to create directory " + parent);
                    }
                    try (OutputStream o = Files.newOutputStream(f.toPath())) {
                        IOUtils.copy(ais, o);
                    }
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
            System.out.println("解压失败,原因:" + e.getMessage());
        }
        System.out.println("解压完毕,耗时:" + (System.currentTimeMillis() - d1) + " ms");
    }

}

测试一下:

public static void main(String[] args) throws FileNotFoundException {
    compress("D:\\temp\\新建文件夹", "D:\\temp\\新建文件夹.zip");
    uncompress("D:\\temp\\新建文件夹.zip", "D:\\temp\\文件夹");
}

创建时间: 8-28 10:42

修改时间: 8-28 10:44

浏览: 8

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