Groovy - how to zip a whole directory in Groovy?

user3804769 :

I found an example on how to zip all the files in a folder but I would like to zip a whole folder, with all its subfolders and the files contained within all of them.

I am using groovy, so a Java solution is perfectly fine.

How can I zip a whole folder with its contents in groovy?

Brother :

You can use Zeroturnaround Zip for this.

ZipUtil.pack(new File("/your/folder/here"), new File("/your/zip/here.zip"));

Adding this dependency

<dependency>
  <groupId>org.zeroturnaround</groupId>
  <artifactId>zt-zip</artifactId>
  <version>1.13</version>
  <type>jar</type>
</dependency>

[UPDATED]

This is a way of doing it using Java 8 solution:

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class AppZip {

    private List<String> fileList;
    private String sourceFolder;

    AppZip(String sourceFolder) {
        this.sourceFolder = sourceFolder;
        fileList = new ArrayList<>();
    }

    /**
     * Zip it
     *
     * @param zipFile output ZIP file location
     */
    public void zipIt(String zipFile) {

        byte[] buffer = new byte[1024];

        try {
            generateFileList(new File(sourceFolder));

            FileOutputStream fos = new FileOutputStream(zipFile);
            ZipOutputStream zos = new ZipOutputStream(fos);

            for (String file : this.fileList) {

                ZipEntry ze = new ZipEntry(file);
                zos.putNextEntry(ze);

                FileInputStream fin =
                        new FileInputStream(sourceFolder + File.separator + file);

                int len;
                while ((len = fin.read(buffer)) > 0) {
                    zos.write(buffer, 0, len);
                }

                fin.close();
            }

            zos.closeEntry();
            zos.close();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }

    /**
     * Traverse a directory and get all files,
     * and add the file into fileList
     *
     * @param node file or directory
     */
    public void generateFileList(File node) {

        //add file only
        if (node.isFile()) {
            fileList.add(generateZipEntry(node.getAbsoluteFile().toString()));
        }

        if (node.isDirectory()) {
            String[] subNote = node.list();
            for (String filename : subNote) {
                generateFileList(new File(node, filename));
            }
        }

    }

    /**
     * Format the file path for zip
     *
     * @param file file path
     * @return Formatted file path
     */
    private String generateZipEntry(String file) {
        return file.substring(sourceFolder.length() + 1);
    }
}

And then calling:

        AppZip appZip = new AppZip("/your/folder/here");
        appZip.zipIt("/your/zip/here");