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

publicvoidunzipDirWithPassword( final String sourceZipFile ,

final String destinationDir , final String password ){

RandomAccessFile randomAccessFile=null;

ISevenZipInArchive inArchive=null;try{

randomAccessFile=newRandomAccessFile(sourceZipFile,"r");

inArchive=SevenZip.openInArchive(null,//autodetect archive typenewRandomAccessFileInStream(randomAccessFile));//Getting simple interface of the archive inArchiveISimpleInArchive simpleInArchive=inArchive.getSimpleInterface();for(final ISimpleInArchiveItem item : simpleInArchive.getArchiveItems()){

finalint[] hash=newint[] {0};if(!item.isFolder()){

ExtractOperationResult result;

result=item.extractSlow(newISequentialOutStream(){publicintwrite(finalbyte[] 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=newFile(path);if(!folderExisting.exists())newFile(path).mkdirs();

}if(!newFile(destinationDir+File.separator+item.getPath()).exists()){newFile(destinationDir).createNewFile();

}

OutputStreamout=newFileOutputStream(destinationDir+File.separator+item.getPath());out.write(data);out.close();

}catch( Exception e ){

e.printStackTrace();

}

hash[0]|=Arrays.hashCode(data);returndata.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();

}

}

}