Unpack all jar and war files with in a zip file

Question

I have a zip file which contains,

1. war files
2. jar files
3. jar files may contain jar files within that.

I need to unzip a zip file which contains above-mentioned file types. Meanwhile, it should unpack all jar or war files also.

Is there any way to do this using shell script or java? else any single command to do all these.

Answer 1

Try below method:

public void unzipFile(String zipFile) throws ZipException, IOException 
{
int BUFFER = 2048;
ZipFile zip = new ZipFile(new File(zipFile));
String pathToMainFile = zipFile.substring(0, zipFile.length() - 4);
new File(pathToMainFile).mkdir();
Enumeration zipEntries = zip.entries();
while (zipEntries.hasMoreElements())
{
    ZipEntry entry = (ZipEntry) zipFileEntries.nextElement();
    String current = entry.getName();
    File dest = new File(pathToMainFile, current);
    File outerParentSt = dest.getParentFile();
    outerParentSt.mkdirs();

    if (!entry.isDirectory())
    {
        BufferedInputStream is = new BufferedInputStream(zip.getInputStream(entry));
        int currentByte;
        byte data[] = new byte[BUFFER];
        // write the file
        FileOutputStream fos = new FileOutputStream(dest);
        BufferedOutputStream destbuff = new BufferedOutputStream(fos,
        BUFFER);

        // r w to EOF
        while ((currentByte = is.read(data, 0, BUFFER)) != -1) {
            destbuff.write(data, 0, currentByte);
        }
        dest.flush();
        dest.close();
        is.close();
        fos.close;
    }

    if (current.endsWith(".zip")) //or jar or war
    {
        unzipFile(dest.getAbsolutePath()); //recursively
    }
  }
}