Java中的压缩文件问题

Question

I am currently trying to zip all files within a directory.

The zip file is being created and the files are being processed - but for some reason the files are not appearing within the zip file.

The code being used to complete this task is as follows:

public class FileZipper {

   public void zipDir( String dir, String zipFileName ) {
        try{
            File dirObj = new File(dir);
            ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFileName));
            Logger.info("Creating : " + zipFileName);
            addDir(dirObj, out);
            out.close();
        }
        catch (Exception e){
            Logger.error( e, "Error zipping directory" );
        }
  }

  private void addDir(File dirObj, ZipOutputStream out) throws IOException {
      File[] files;
      if( !dirObj.isDirectory() ){
          files = new File[] { dirObj };
      }
      else{
          files = dirObj.listFiles();
      }
      byte[] tmpBuf = new byte[1024];

      for (int i = 0; i < files.length; i++) {
          if (files[i].isDirectory()) {
              addDir(files[i], out);
              continue;
          }
          FileInputStream in = new FileInputStream(files[i].getAbsolutePath());
          Logger.info(" Adding: " + files[i].getAbsolutePath());
          out.putNextEntry(new ZipEntry(files[i].getAbsolutePath()));
          int len;
          while ((len = in.read(tmpBuf)) > 0) {
              out.write(tmpBuf, 0, len);
          }
          out.closeEntry();
          in.close();
      }
  }
}

When reviewing the logging information, the files within the directories are being found and processed, but the created zip file contains no data.

Any help with this issues will be greatly appreciated.

Thanks

Answer 1

除了通过绝对路径添加文件可能不是您想要的事实之外，此代码对我来说也很好。

Answer 2

Hy, Give a set of files name to this function, and a zip name. It should work.

private void zipFiles (ArrayList<String> listWithFiles, String zipName) {

        try {

            byte[] buffer = new byte[1024];

            // create object of FileOutputStream
            FileOutputStream fout = new FileOutputStream(zipName);

            // create object of ZipOutputStream from FileOutputStream
            ZipOutputStream zout = new ZipOutputStream(fout);

            for (String currentFile : listWithFiles) {

                // create object of FileInputStream for source file
                FileInputStream fin = new FileInputStream(currentFile);

                // add files to ZIP
                zout.putNextEntry(new ZipEntry(currentFile ));

                // write file content
                int length;

                while ((length = fin.read(buffer)) > 0) {
                    zout.write(buffer, 0, length);
                }

                zout.closeEntry();

                // close the InputStream
                fin.close();
            }

            // close the ZipOutputStream
            zout.close();
        } catch (IOException ioe) {
            System.out.println("IOException :" + ioe);
        }
    }

All good to you, dAN