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Is there a way to unzip a file with various subfolders?

Is there a way to unzip a ZIP file with various subfolders in Java without needing to install any additional plugin.
For example, I would like to unzip the file https://services.gradle.org/distributions/gradle-6.4.1-bin.zip with this code:
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
public class unzipfile {
private static void unzip(String zipFilePath, String zipFileName, String destDir) {
System.out.print("Extracting " + zipFileName + "...");
File dir = new File(destDir);
// create output directory if it doesn't exist
if(!dir.exists()) dir.mkdirs();
FileInputStream fis;
//buffer for read and write data to file
byte[] buffer = new byte[1024];
try {
fis = new FileInputStream(zipFilePath);
try (ZipInputStream zis = new ZipInputStream(fis)) {
ZipEntry ze = zis.getNextEntry();
while(ze != null){
String fileName = ze.getName();
File newFile = new File(destDir + File.separator + fileName);
//create directories for sub directories in zip
new File(newFile.getParent()).mkdirs();
try (FileOutputStream fos = new FileOutputStream(newFile)) {
int len;
while ((len = zis.read(buffer)) > 0) {
fos.write(buffer, 0, len);
}
}
//close this ZipEntry
ze = zis.getNextEntry();
}
}
fis.close();
System.out.println(" Done!");
} catch (IOException e) {
System.out.println(" Error while extracting " + zipFileName);
Logger.getLogger(unzipfile.class.getName()).log(Level.SEVERE, null, e);
}
}
public static void main(String[] args) {
try{
unzip(args[0], args[1], args[2]);
} catch (ArrayIndexOutOfBoundsException e) {
System.out.println("No valid arguments specified. Usage:\n");
System.out.println("\'java unzipfile [ZIP file path with file name] [file name only] [target directory]\'");
System.exit(1);
}
}
}
I run:
java unzipfile path\to\file\gradle-6.4.1-bin.zip gradle-6.4.1-bin.zip .
But when I run the full application it gives me the message:
Extracting gradle-6.4.1-bin.zip... Error while extracting gradle-6.4.1-bin.zip
may. 27, 2020 5:44:37 P.áM. unzipfile unzip
SEVERE: null
java.io.FileNotFoundException: .\gradle-6.4.1\README (El sistema no puede encontrar la ruta especificada)
at java.base/java.io.FileOutputStream.open0(Native Method)
at java.base/java.io.FileOutputStream.open(FileOutputStream.java:291)
at java.base/java.io.FileOutputStream.<init>(FileOutputStream.java:234)
at java.base/java.io.FileOutputStream.<init>(FileOutputStream.java:184)
at unzipfile.unzip(unzipfile.java:29)
at unzipfile.main(unzipfile.java:50)
Thanks for your time.

Finally, I've found this working code:
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
public class unzipfile {
public static void main(String[] args) {
String filename = args[0];
File srcFile = new File(filename);
// create a directory with the same name to which the contents will be extracted
String zipPath = filename.substring(0, filename.length()-4);
File temp = new File(zipPath);
temp.mkdir();
ZipFile zipFile = null;
try {
zipFile = new ZipFile(srcFile);
// get an enumeration of the ZIP file entries
Enumeration e = zipFile.entries();
while (e.hasMoreElements()) {
ZipEntry entry = (ZipEntry) e.nextElement();
File destinationPath = new File(zipPath, entry.getName());
//create parent directories
destinationPath.getParentFile().mkdirs();
// if the entry is a file extract it
if (!entry.isDirectory())
System.out.println("Extracting file: " + destinationPath);
try (BufferedInputStream bis = new BufferedInputStream(zipFile.getInputStream(entry))) {
int b;
byte buffer[] = new byte[1024];
FileOutputStream fos = new FileOutputStream(destinationPath);
try (BufferedOutputStream bos = new BufferedOutputStream(fos, 1024)) {
while ((b = bis.read(buffer, 0, 1024)) != -1) {
bos.write(buffer, 0, b);
}
}
}
}
}
catch (IOException ioe) {
System.out.println("Error opening zip file" + ioe);
}
finally {
try {
if (zipFile!=null) {
zipFile.close();
}
}
catch (IOException ioe) {
System.out.println("Error while closing zip file" + ioe);
}
}
}
}

automatically unzip file while downloading that zip file

I have a download button in my webpage where when i click it, it downloads a zip file. now i want to have a function like, when i click the download button the zip file should automatically extract and save in a user defined folder.
i have an idea that if we can create a exe file and add it to the download button then it should automatically extract the zip file and save in folder
%>
<td align="center">
<img onclick="pullReport('<%=reportPath.toString()%>');" title="Click to download this Report" src="./images/down-bt.gif"/>
</td>
</tr>
<%} %>
this is the method that creates zip file
public ActionForward pullReport(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response)throws SQLException{
Connection connection=null;
boolean cont=false;
failureList.clear();
logger.info("dispatch = pullReport");
String filePaths=null;
String filePath = null;
String fileName = null;
String srcFileName = null;
String directory = null;
try{
Properties props = Application.getProperties();
String basePath = props.getProperty("std.report_location");
logger.info(" basepath " + basePath);
connection=ConnectionManager.getConnection();
StandardReportsForm standardReportsForm=(StandardReportsForm)form;
filePaths=standardReportsForm.getFilePath();
logger.info("filepaths " + filePaths);
ServletOutputStream fos = null;
InputStream is = null;
String [] filePathArr = filePaths.split(",");
FileIO fio = null;
FileIO srcFio = null;
if (filePathArr.length > 1) {
filePath = filePathArr[0].substring(0,filePathArr[0].lastIndexOf("."))+".zip";
logger.info(filePath + " creating zip file ......");
directory = basePath+filePath.substring(0,filePath.lastIndexOf('/'));
logger.info( " Direcory Name :" +directory);
fileName = filePath.substring(filePath.lastIndexOf('/')+1);
logger.info( " File Name :" +fileName);
fio = new FileIO(directory,fileName);
fio.mkDir();
byte[] buffer = new byte[1024];
OutputStream fosForZip = fio.createOutputStream();
ZipOutputStream zos = new ZipOutputStream(fosForZip);
InputStream fis = null;
for (int i=0; i < filePathArr.length; i++) {
srcFileName = filePathArr[i].substring(filePathArr[i].lastIndexOf('/')+1);
srcFio = new FileIO(directory,srcFileName);
if (srcFio.isFileExist()) {
cont=true;
logger.info(" adding into zip file " +srcFileName);
fis = srcFio.createInputStream();
BufferedInputStream bis = new BufferedInputStream(fis);
zos.putNextEntry(new ZipEntry(srcFileName));
int length;
while ((length = bis.read(buffer)) != -1) {
zos.write(buffer, 0, length);
}
zos.closeEntry();
// close the InputStream
bis.close();
srcFio.closeInputStream(fis);
} else {
logger.info(srcFileName + " file does not exist on shared drive");
cont =false;
break;
}
}
FileIO.closeOutputStream(zos);
if (!cont){
standardReportsForm.setMissingFileName(srcFileName);
request.getSession().getAttribute("fetchReports");
standardReportsForm.setFetchedReports((List<ReportDetails>)request.getSession().getAttribute("fetchReports"));
return mapping.findForward("fetchReport");
}
} else {
filePath = filePathArr[0];
fileName = filePath.substring(filePath.lastIndexOf('/')+1);
}
if (basePath.startsWith("smb")) {
SmbFile smbFile = new SmbFile(basePath+filePath,SMBHelper.getInstance().createAuthFromSmbLocation(basePath));
if(smbFile.exists())
{
is = new SmbFileInputStream(smbFile);
cont=true;
}
} else {
File file=new File(basePath+filePath);
if(file.exists())
{
is = new FileInputStream(file);
cont=true;
}
}
if(cont)
{
fos=response.getOutputStream();
setContentType(response, fileName);
//fos.write (baos.toByteArray());
ByteArrayOutputStream bos = new ByteArrayOutputStream();
byte[] buf = new byte[1024];
for (int readNum; (readNum = is.read(buf)) != -1;) {
bos.write(buf, 0, readNum);
}
byte[] bytes = bos.toByteArray();
fos.write(bytes);
fos.flush();
fos.close();
} else {
standardReportsForm.setMissingFileName(fileName);
request.getSession().getAttribute("fetchReports");
standardReportsForm.setFetchedReports((List<ReportDetails>)request.getSession().getAttribute("fetchReports"));
return mapping.findForward("fetchReport");
}
}catch(SQLException sx) {
logger.error(" error log SQLException " ,sx);
failureList.add(new UROCException(UROCMessages.getMessage("ERR_CONN_EXEC"), sx));
} catch(NamingException ne) {
logger.info("RMI error is "+ne);
failureList.add(new UROCException(UROCMessages.getMessage("ERR_NAMING_EXEC"), ne));
} catch(Exception e) {
logger.error(" error log Exception " ,e);
failureList.add(new UROCException(UROCMessages.getMessage("ERR_GEN_EXEC", new String[] {"General Exception"}), e));
} finally {
SQLHelper.closeConnection(connection, failureList, logger);
}
return null;
}

yah you can use java code to unzip the file.here is the example
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
public class UnzipUtility {
public String zipFilePath= "D:/javatut/corejava/src/zipfile.zip";
public String destDir = "D:/javatut/corejava";
private static final int BUFFER_SIZE = 4096;
/**
* #param args
* #throws IOException
*/
public static void main(String[] args) throws IOException {
UnzipUtility uu = new UnzipUtility();
uu.unzip(uu.zipFilePath, uu.destDir);
}
public void unzip(String zipFilePath,String destDir)throws IOException{
File destDirectory = new File(destDir);
if(!destDirectory.exists()){
destDirectory.mkdir();
}
ZipInputStream zipIn = new ZipInputStream(new FileInputStream(zipFilePath));
ZipEntry zipEntry = zipIn.getNextEntry();
while(zipEntry!=null){
String filePath=destDir+File.separator+zipEntry.getName();
if(!zipEntry.isDirectory()){
extractFile(zipIn,filePath);
}
else{
File dir = new File(filePath);
dir.mkdir();
}
zipIn.closeEntry();
zipEntry = zipIn.getNextEntry();
}
zipIn.close();
}
private void extractFile(ZipInputStream zipIn, String filePath) throws FileNotFoundException {
BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(filePath));
byte[] bytesIn = new byte[BUFFER_SIZE];
int read = 0;
try {
while ((read = zipIn.read(bytesIn)) != -1) {
bos.write(bytesIn, 0, read);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
bos.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
thank you.......

please follow this path and (clear) automatic files viewer
chrome://settings/onStartup/Advanced/Downloads/automatic file viewer (clear)

How to download WordPress with Java

I want to download WordPress with Java.
My code looks like this:
public void file(String surl, String pathToSave) throws IOException {
URL url = new URL(surl);
sun.net.www.protocol.http.HttpURLConnection con = (HttpURLConnection) url.openConnection();
try (InputStream stream = con.getInputStream()) {
Files.copy(stream, Paths.get(pathToSave));
}
}
I am using this url to download the latest version of WordPress: http://wordpress.org/latest.tar.gz
But when I try extracting the tar.gz file I get an error saying the file is not in a gzip format.
I read this Issues uncompressing a tar.gz file and it looks like when I download WordPress I need to have a cookie enabled to accept the terms and services.
How would I do this?
Or am I incorrectly downloading the tar.gz file?
Here is what my tar.gz extracting code:
public class Unzip {
public static int BUFFER = 2048;
public void tar(String pathToTar, String outputPath) throws IOException {
File tarFile = new File(pathToTar);
TarArchiveInputStream tarInput =
new TarArchiveInputStream(new GZIPInputStream(new FileInputStream(tarFile)));
TarArchiveEntry currentEntry = tarInput.getNextTarEntry();
while(currentEntry != null) {
if (currentEntry.isDirectory()) {
File f = new File(outputPath + currentEntry.getName());
f.mkdirs();
}
else {
int count;
byte data[] = new byte[BUFFER];
FileOutputStream fos = new FileOutputStream(outputPath
+ currentEntry.getName());
BufferedOutputStream dest = new BufferedOutputStream(fos,
BUFFER);
while ((count = tarInput.read(data, 0, BUFFER)) != -1) {
dest.write(data, 0, count);
}
dest.close();
}
}
}
}
Thanks in advance.

Change sun.net.www.protocol.http.HttpURLConnection to java.net.HttpURLConnection
Add fos.close() after dest.close()
You must call currentEntry = tarInput.getNextTarEntry(); inside the while loop, too.
There is nothing with cookie enabled or accept the terms and services.
Here is my complete code.
Please try this and compare it to your code:
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.zip.GZIPInputStream;
import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
public class Downloader {
public static final int BUFFER = 2048;
private void download(String surl, String pathToSave) throws IOException {
URL url = new URL(surl);
HttpURLConnection con = (HttpURLConnection) url.openConnection();
try (InputStream stream = con.getInputStream()) {
Files.copy(stream, Paths.get(pathToSave));
}
}
private void unGz(String pathToGz, String outputPath) throws IOException {
FileInputStream fin = new FileInputStream(pathToGz);
BufferedInputStream in = new BufferedInputStream(fin);
try (FileOutputStream out = new FileOutputStream(outputPath)) {
try (GzipCompressorInputStream gzIn = new GzipCompressorInputStream(in)) {
final byte[] buffer = new byte[BUFFER];
int n = 0;
while (-1 != (n = gzIn.read(buffer))) {
out.write(buffer, 0, n);
}
}
}
}
public void unTarGz(String pathToTar, String outputPath) throws IOException {
File tarFile = new File(pathToTar);
TarArchiveInputStream tarInput
= new TarArchiveInputStream(new GZIPInputStream(new FileInputStream(tarFile)));
TarArchiveEntry currentEntry;
while ((currentEntry = tarInput.getNextTarEntry()) != null) {
if (currentEntry.isDirectory()) {
File f = new File(outputPath + currentEntry.getName());
f.mkdirs();
} else {
int count;
byte data[] = new byte[BUFFER];
try (FileOutputStream fos = new FileOutputStream(outputPath
+ currentEntry.getName())) {
try (BufferedOutputStream dest = new BufferedOutputStream(fos,
BUFFER)) {
while ((count = tarInput.read(data, 0, BUFFER)) != -1) {
dest.write(data, 0, count);
}
}
}
}
}
}
public static void main(String[] args) throws IOException {
Downloader down = new Downloader();
down.download("https://wordpress.org/latest.tar.gz", "/tmp/latest.tar.gz");
down.unTarGz("/tmp/latest.tar.gz", "/tmp/untar/");
}
}

Reading video data and writing to another file java

I am reading a video file data in bytes and sending to another file but the received video file is not playing properly and is chattered.
Can anyone explain me why this is happening and a solution is appreciated.
My code is as follows
import java.io.*;
public class convert {
public static void main(String[] args) {
//create file object
File file = new File("B:/music/Billa.mp4");
try
{
//create FileInputStream object
FileInputStream fin = new FileInputStream(file);
byte fileContent[] = new byte[(int)file.length()];
fin.read(fileContent);
//create string from byte array
String strFileContent = new String(fileContent);
System.out.println("File content : ");
System.out.println(strFileContent);
File dest=new File("B://music//a.mp4");
BufferedWriter bw=new BufferedWriter(new FileWriter(dest));
bw.write(strFileContent+"\n");
bw.flush();
}
catch(FileNotFoundException e)
{
System.out.println("File not found" + e);
}
catch(IOException ioe)
{
System.out.println("Exception while reading the file " + ioe);
}
}
}

This question might be dead but someone might find this useful.
You can't handle video as string. This is the correct way to read and write (copy) any file using Java 7 or higher.
Please note that size of buffer is processor-dependent and usually should be a power of 2. See this answer for more details.
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
public class FileCopy {
public static void main(String args[]) {
final int BUFFERSIZE = 4 * 1024;
String sourceFilePath = "D:\\MyFolder\\MyVideo.avi";
String outputFilePath = "D:\\OtherFolder\\MyVideo.avi";
try(
FileInputStream fin = new FileInputStream(new File(sourceFilePath));
FileOutputStream fout = new FileOutputStream(new File(outputFilePath));
){
byte[] buffer = new byte[BUFFERSIZE];
while(fin.available() != 0) {
bytesRead = fin.read(buffer);
fout.write(buffer, 0, bytesRead);
}
}
catch(Exception e) {
System.out.println("Something went wrong! Reason: " + e.getMessage());
}
}
}

Hope this also helpful for you - This can read and write a file into another file (You can use any file type to do that)
import java.io.FileInputStream;
import java.io.FileOutputStream;
public class Copy {
public static void main(String[] args) throws Exception {
FileInputStream input = new FileInputStream("input.mp4"); //input file
byte[] data = input.readAllBytes();
FileOutputStream output = new FileOutputStream("output.mp4"); //output file
output.write(data);
output.close();
}
}

import java.awt.image.BufferedImage;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import javax.imageio.ImageIO;
public class Reader {
public Reader() throws Exception{
File file = new File("C:/Users/Digilog/Downloads/Test.mp4");
FileInputStream fin = new FileInputStream(file);
byte b[] = new byte[(int)file.length()];
fin.read(b);
File nf = new File("D:/K.mp4");
FileOutputStream fw = new FileOutputStream(nf);
fw.write(b);
fw.flush();
fw.close();
}
}

In addition to Jakub Orsula's answer, one needs to check the result of read operation to prevent garbage being written to end of file in last iteration.
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
public class FileCopy {
public static void main(String args[]) {
final int BUFFERSIZE = 4 * 1024;
String sourceFilePath = "D:\\MyFolder\\MyVideo.avi";
String outputFilePath = "D:\\OtherFolder\\MyVideo.avi";
try(
FileInputStream fin = new FileInputStream(new File(sourceFilePath));
FileOutputStream fout = new FileOutputStream(new File(outputFilePath));
){
byte[] buffer = new byte[BUFFERSIZE];
int bytesRead;
while(fin.available() != 0) {
bytesRead = fin.read(buffer);
fout.write(buffer, 0, bytesRead);
}
}
catch(Exception e) {
System.out.println("Something went wrong! Reason: " + e.getMessage());
}
}
}

Copy and validate a Zip File via Java

After some research:
How to create a Zip File
and some google research i came up with this java function:
static void copyFile(File zipFile, File newFile) throws IOException {
ZipFile zipSrc = new ZipFile(zipFile);
ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(newFile));
Enumeration srcEntries = zipSrc.entries();
while (srcEntries.hasMoreElements()) {
ZipEntry entry = (ZipEntry) srcEntries.nextElement();
ZipEntry newEntry = new ZipEntry(entry.getName());
zos.putNextEntry(newEntry);
BufferedInputStream bis = new BufferedInputStream(zipSrc
.getInputStream(entry));
while (bis.available() > 0) {
zos.write(bis.read());
}
zos.closeEntry();
bis.close();
}
zos.finish();
zos.close();
zipSrc.close();
}
This code is working...but it is not nice and clean at all...anyone got a nice idea or an example?
Edit:
I want to able to add some type of validation if the zip archive got the right structure...so copying it like an normal file without regarding its content is not working for me...or would you prefer checking it afterwards...i am not sure about this one

You just want to copy the complete zip file? Than it is not needed to open and read the zip file... Just copy it like you would copy every other file.
public final static int BUF_SIZE = 1024; //can be much bigger, see comment below
public static void copyFile(File in, File out) throws Exception {
FileInputStream fis = new FileInputStream(in);
FileOutputStream fos = new FileOutputStream(out);
try {
byte[] buf = new byte[BUF_SIZE];
int i = 0;
while ((i = fis.read(buf)) != -1) {
fos.write(buf, 0, i);
}
}
catch (Exception e) {
throw e;
}
finally {
if (fis != null) fis.close();
if (fos != null) fos.close();
}
}

Try: http://commons.apache.org/io/api-release/org/apache/commons/io/FileUtils.html#copyFile
Apache Commons FileUtils#copyFile

My solution:
import java.io.*;
import javax.swing.*;
public class MovingFile
{
public static void copyStreamToFile() throws IOException
{
FileOutputStream foutOutput = null;
String oldDir = "F:/UPLOADT.zip";
System.out.println(oldDir);
String newDir = "F:/NewFolder/UPLOADT.zip"; // name as the destination file name to be done
File f = new File(oldDir);
f.renameTo(new File(newDir));
}
public static void main(String[] args) throws IOException
{
copyStreamToFile();
}
}

I have updated your code to Java 9+, FWIW
try (ZipFile srcFile = new ZipFile(inputName)) {
try (ZipOutputStream destFile = new ZipOutputStream(
Files.newOutputStream(Paths.get(new File(outputName).toURI())))) {
Enumeration<? extends ZipEntry> entries = srcFile.entries();
while (entries.hasMoreElements()) {
ZipEntry src = entries.nextElement();
ZipEntry dest = new ZipEntry(src.getName());
destFile.putNextEntry(dest);
try (InputStream content = srcFile.getInputStream(src)) {
content.transferTo(destFile);
}
destFile.closeEntry();
}
destFile.finish();
}
}