Java基于Junrar包实现rar文件解压缩

添加依赖

// https://mvnrepository.com/artifact/com.github.junrar/junrar
implementation group: 'com.github.junrar', name: 'junrar', version: '0.7'

代码示例

package com.tools;

import java.io.File;

import java.io.FileOutputStream;

import com.github.junrar.Archive;
import com.github.junrar.rarfile.FileHeader;

public class ZipAndRarTools {

    public static String srcDirectoryPath = "D:\\Recreation\\zip";
    public static String dstDirectoryPath = "D:\\Recreation\\unzip";

    public static void main(String[] args) {
        File srcFiles = new File(srcDirectoryPath);
        ReadRarFiles(srcFiles);

    }

    public static void ReadRarFiles(File srcFiles) {
        File dstDirectory = new File(dstDirectoryPath);

        if (!dstDirectory.exists()) {
            System.err.println("目的端不存在该目录，请检查目录是否存在！");
        }
        if (!srcFiles.exists()) {
            System.err.println("源端不存在该目录，请检查目录是否存在！");
        }

        Archive archive = null;
        String fileName = null;
        String zipFileName = null;
        FileOutputStream fileOutputStream = null;
        File[] fileList = srcFiles.listFiles();

        if (fileList != null) {
            for (File file : fileList) {
                try {
                    if (file.isFile()) {
                        zipFileName = file.getName();
                        archive = new Archive(file);
                        FileHeader fileHeader = archive.nextFileHeader();
                        while (fileHeader != null) {
                            //防止出现文件名中文乱码问题
                            fileName = fileHeader.getFileNameW().isEmpty() ? fileHeader.getFileNameString() : fileHeader.getFileNameW();
                            File destFile = new File(dstDirectoryPath + File.separator + fileName.trim());
                            fileOutputStream = new FileOutputStream(destFile);
                            archive.extractFile(fileHeader, fileOutputStream);

                            fileHeader = archive.nextFileHeader();
                        }
                    } else {
                        ReadRarFiles(file);
                    }
                } catch (Exception e) {
                    System.err.println(zipFileName + "解压失败！！！");
                } finally {
                    try {
                        if (fileOutputStream != null)
                            fileOutputStream.close();
                        if (archive != null)
                            archive.close();
                    } catch (Exception e) {
                        System.err.println("关闭流失败！！！");
                    }
                }
            }
        } else {
            System.err.println("该目录下没有文件和目录！！！");
        }
    }

}