JAVA使用7-zip解压缩带密码的Zip文件（非Proccess方法）

最新推荐文章于 2023-03-17 14:27:22 发布

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本文介绍如何使用sevenzipjbinding库解压带有密码保护的压缩文件，包括导入库、设置参数及执行解压操作。

首先到sourceforge网站下载sevenzipjbinding压缩包
我下载的版本是sevenzipjbinding-4.65-1.04-rc-extr-only-AllWindows.zip

public void unzipDirWithPassword( final String sourceZipFile ,
            final String destinationDir , final String password ){
           RandomAccessFile randomAccessFile = null;
           ISevenZipInArchive inArchive = null;
           try{
              randomAccessFile = new RandomAccessFile(sourceZipFile, "r");
              inArchive = SevenZip.openInArchive(null, // autodetect archive type
              new RandomAccessFileInStream(randomAccessFile));
             
              // Getting simple interface of the archive inArchive
              ISimpleInArchive simpleInArchive = inArchive.getSimpleInterface();
             
              for (final ISimpleInArchiveItem item : simpleInArchive.getArchiveItems()){
                  final int[] hash = new int[] { 0 };
                  if (!item.isFolder()){
                      ExtractOperationResult result;
                      result = item.extractSlow(new ISequentialOutStream(){
                            public int write(final byte[] data) throws SevenZipException{
                                  try{
                                        if(item.getPath().indexOf(File.separator)>0){
                                            String path = destinationDir+File.separator+item.getPath(). substring(0,item.getPath().lastIndexOf(File.separator));
                                            File folderExisting = new File(path);
                                            if (!folderExisting.exists())
                                                 new File(path).mkdirs();
                                        }
                                        if(!new File(destinationDir + File.separator+item.getPath()).exists()){
                                            new File(destinationDir).createNewFile();
                                        }
                                        OutputStream out = new FileOutputStream(destinationDir+ File.separator+item.getPath());
                                        out.write(data);
                                        out.close();
                                   }catch( Exception e ){
                                        e.printStackTrace();
                                   }
                                   hash[0] |= Arrays.hashCode(data);
                                   return data.length; // Return amount of proceed data
                           }
                       },password); /// password.
                       if (result == ExtractOperationResult.OK){
                           System.out.println(String.format("%9X | %s",
                                       hash[0], item.getPath()));
                       }else{
                           System.err.println("Error extracting item: " + result);
                       }
                  }
              }
           } catch (Exception e){
                e.printStackTrace();
           } finally {
                if (inArchive != null){
                    try {
                       inArchive.close();
                    } catch (SevenZipException e){
                       System.err.println("Error closing archive: " + e);
                       e.printStackTrace();
                    }
                }
                if (randomAccessFile != null) {
                     try{
                         randomAccessFile.close();
                     } catch (IOException e){
                         System.err.println("Error closing file: " + e);
                         e.printStackTrace();
                     }
                }
}

}