java解析rar压缩包兼容rar4

1 .导包：

<dependency><groupId>com.github.axet</groupId><artifactId>java-unrar</artifactId><version>1.7.0-8</version>
</dependency>
<dependency><groupId>net.sf.sevenzipjbinding</groupId><artifactId>sevenzipjbinding</artifactId><version>16.02-2.01</version>
</dependency>
<dependency><groupId>net.sf.sevenzipjbinding</groupId><artifactId>sevenzipjbinding-all-platforms</artifactId><version>16.02-2.01</version>
</dependency>

import net.sf.sevenzipjbinding.IInArchive;
import net.sf.sevenzipjbinding.SevenZip;
import net.sf.sevenzipjbinding.impl.RandomAccessFileInStream;import java.io.File;
import java.io.RandomAccessFile;
import java.util.ArrayList;
import java.util.List;public class FileUtil {public static List<String> unRar(File rarFile, String dstDirectoryPath){IInArchive archive;RandomAccessFile randomAccessFile;try {randomAccessFile = new RandomAccessFile(rarFile,"r");archive = SevenZip.openInArchive(null,new RandomAccessFileInStream(randomAccessFile));int[] in = new int[archive.getNumberOfItems()];for (int i = 0; i < in.length; i++) {in[i] = i;}archive.extract(in,false,new ExtractCallback(archive,dstDirectoryPath));archive.close();randomAccessFile.close();System.out.println("解压目标文件夹："+dstDirectoryPath);List<String> allFileList = getAllFile(dstDirectoryPath,false);ArrayList<String> resultFileList = new ArrayList<>();String startString;String endString;String finallyString;for (String s : allFileList) {if (s.startsWith("/")||s.startsWith("\\")) {startString = s.substring(0,s.lastIndexOf("\\"));endString = s.substring(s.lastIndexOf("\\")+1);finallyString = startString+"\\"+endString;}else {// windows去掉盘符s.substring(2);startString = s.substring(0,s.lastIndexOf("\\"));endString = s.substring(s.lastIndexOf("\\")+1);finallyString = startString+"/"+endString;}System.out.println("rar文件解压前缀为："+startString+"，rar文件解压后缀为："+endString);// 解决linux路径出现//导致文件路径错误finallyString = finallyString.replaceAll("//","/");resultFileList.add(finallyString);}System.out.println("rar文件解压文件路径为："+resultFileList);return resultFileList;} catch (Exception e) {e.printStackTrace();}return null;}public static List<String> getAllFile(String directoryPath,boolean isAddDirectory){List<String> list = new ArrayList<>();File baseFile = new File(directoryPath);if (baseFile.isFile()||!baseFile.exists()) {return list;}File[] files = baseFile.listFiles();for (File file : files) {if (file.isDirectory()) {if (isAddDirectory) {list.add(file.getAbsolutePath());}list.addAll(getAllFile(file.getAbsolutePath(),isAddDirectory));}else {list.add(file.getAbsolutePath());}}return list;}
}


import net.sf.sevenzipjbinding.*;import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;public class ExtractCallback implements IArchiveExtractCallback {private int index;private IInArchive inArchive;private String ourDir;public ExtractCallback(IInArchive inArchive, String ourDir) {this.inArchive = inArchive;this.ourDir = ourDir;}@Overridepublic ISequentialOutStream getStream(int index, ExtractAskMode extractAskMode) throws SevenZipException {this.index = index;final String path = (String) inArchive.getProperty(index, PropID.PATH);final boolean isFolder = (boolean) inArchive.getProperty(index, PropID.IS_FOLDER);final String[] oldPath = {""};return new ISequentialOutStream() {@Overridepublic int write(byte[] data) throws SevenZipException {try {if (!isFolder) {File file = new File(ourDir + "\\" + path);if (path.equals(oldPath[0])) {save2File(file, data, true);} else {save2File(file, data, false);}oldPath[0] = path;}} catch (Exception e) {e.printStackTrace();}return data.length;}};}@Overridepublic void prepareOperation(ExtractAskMode extractAskMode) throws SevenZipException {}@Overridepublic void setOperationResult(ExtractOperationResult extractOperationResult) throws SevenZipException {}@Overridepublic void setTotal(long l) throws SevenZipException {}@Overridepublic void setCompleted(long l) throws SevenZipException {}public boolean save2File(File file, byte[] msg, boolean append) {FileOutputStream fos = null;try {File parent = file.getParentFile();boolean bool;if ((!parent.exists()) && (!parent.mkdirs())) {return false;}fos = new FileOutputStream(file, append);fos.write(msg);fos.flush();return true;} catch (Exception e) {e.printStackTrace();return false;} finally {if (fos != null) {try {fos.close();} catch (IOException e) {e.printStackTrace();}}}}
}

测试：

public static void main(String[] args) {String source = "F:\\test\\unrar\\7个小矮人4.rar";String target = "F:\\test\\unrar\\解压后\\";List<String> list = FileUtil.unRar(new File(source), target);list.forEach(System.out::println);
}

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