java打包文件成tar压缩文件_java生成tar文件-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_26730215/article/details/123017199

本文介绍了如何使用Java的Apache Commons Compress库来创建tar压缩文件，通过FilePackUtils类展示了如何将多个文件和文件路径打包成tar文件，适合用于文件管理与归档操作。

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package com.dashuf.common.utils.file;

import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
import org.apache.commons.io.IOUtils;

import java.io.*;
import java.util.List;

/**
 * 文件打包工具类
 *
 */
public class FilePackUtils {

    /**
     * 打包tar压缩文件
     *
     * @param sources 文件源
     * @param target  返回压缩的文件
     * @return
     */
    public static File pack(File[] sources, File target) {
        FileOutputStream out = null;
        try {
            out = new FileOutputStream(target);
        } catch (FileNotFoundException e1) {
            e1.printStackTrace();
        }
        TarArchiveOutputStream os = new TarArchiveOutputStream(out);
        for (File file : sources) {
            try {
                TarArchiveEntry tarArchiveEntry = new TarArchiveEntry(file);
                tarArchiveEntry.setName(file.getName());
                os.putArchiveEntry(tarArchiveEntry);
                IOUtils.copy(new FileInputStream(file), os);
                os.closeArchiveEntry();
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if (os != null) {
            try {
                os.flush();
                os.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return target;
    }

    /**
     * 打包tar压缩文件
     *
     * @param filePaths 文件源路径
     * @param target    返回压缩的文件
     * @return
     */
    public static File pack(List<String> filePaths, File target) {
        FileOutputStream out = null;
        try {
            out = new FileOutputStream(target);
        } catch (FileNotFoundException e1) {
            e1.printStackTrace();
        }
        TarArchiveOutputStream os = new TarArchiveOutputStream(out);
        for (int i = 0; i < filePaths.size(); i++) {
            File file = new File(filePaths.get(i));
            try {
                TarArchiveEntry tarArchiveEntry = new TarArchiveEntry(file);
                tarArchiveEntry.setName(file.getName());
                os.putArchiveEntry(tarArchiveEntry);
                IOUtils.copy(new FileInputStream(file), os);
                os.closeArchiveEntry();
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if (os != null) {
            try {
                os.flush();
                os.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return target;
    }
}