I want to unzip an iPhone app .ipa file.
This is actually zip file that extracts normally.
But the actual app file in it is a folder with the ending .app ( as all mac applications are actually folders with the ending .app).
Now the period seems to be a problem for java.util.zip.
public static void main(String[] args) throws IOException {
ZipFile zipFile = new ZipFile("file.zip");
String path = "";
Enumeration files = zipFile.entries();
while (files.hasMoreElements()) {
ZipEntry entry = (ZipEntry) files.nextElement();
if (entry.isDirectory()) {
File file = new File(path + entry.getName());
file.mkdir();
System.out.println("Create dir " + entry.getName());
} else {
File f = new File(entry.getName());
FileOutputStream fos = new FileOutputStream(f); //EXception occurs here
InputStream is = zipFile.getInputStream(entry);
byte[] buffer = new byte[1024];
int bytesRead = 0;
while ((bytesRead = is.read(buffer)) != -1) {
fos.write(buffer, 0, bytesRead);
}
fos.close();
System.out.println("Create File " + entry.getName());
}
}
}
This is my output:
Exception in thread "main" java.io.FileNotFoundException: Payload/SMA Jobs.app/06-magnifying-glass.png (No such file or directory)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:179)
at java.io.FileOutputStream.<init>(FileOutputStream.java:131)
at Main.main(Main.java:27)
enter code here
Anyone knows how to handle those periods?
First of all, you should use mkdirs(), not mkdir().
second, zip files don't always include all the directory entries (or have them in the right order). the best practice is to make the directories in both branches of the code, so add:
} else {
File f = new File(entry.getName());
f.getParent().mkdirs();
(you should add some checking to make sure getParent() is not null, etc).
I don't think the period is the problem. Look at the absolute path of the file you are trying to output and make sure it is pointing to the correct place.
if (entry.isDirectory()) {
File file = new File(path + entry.getName());
....
} else {
File f = new File(entry.getName());
....
While creating directory, file path passed is path + entry.getName()
but while creating file, file path passed is entry.getName()
After changing file path to path + entry.getName(), code works for period file names and normal file names. :)
Related
I want to copy files from source directory to destination. If the file already exists in the destination directory, then append the new file to be copied with its timestamp so that there is no overwrite. How do I check for duplicates and append timestamp to the new file name? Please help!
public static void copyFolder(File src, File dest)
throws IOException{
//list all the directory contents
String files[] = src.list();
for (String file : files) {
//construct the src and dest file structure
File srcFile = new File(src, file);
File destFile = new File(dest, file);
//recursive copy
copyFolder(srcFile,destFile);
}
}else{
//if file, then copy it
//Use bytes stream to support all file types
InputStream in = new FileInputStream(src);
OutputStream out = new FileOutputStream(dest);
byte[] buffer = new byte[1024];
int length;
//copy the file content in bytes
while ((length = in.read(buffer)) > 0){
out.write(buffer, 0, length);
}
in.close();
out.close();
System.out.println("File copied from " + src + " to " + dest);
}
}
//construct the src and dest file structure
File srcFile = new File(src, file);
File destFile = new File(dest, file);
while (destFile.exists()) {
destFile = new File(dest, file + '-' + Instant.now());
}
In one case the destination file got named test-file.txt-2018-03-14T11:05:21.103706Z. The time given is in UTC. In any case you will end up with a name of file that doesn’t already exist (if the loop terminates, but I have a hard time seeing the scenario where it doesn’t).
You may want to append the timestamp only to plain files and reuse existing folders (directories), I don’t know your requirements here. And you may want to append the timestamp before the extension if there is one (to get test-file-2018-03-14T11:05:21.103706Z.txt instead). I trust you to make the necessary modifications.
You can check if the file exists using File.exist() method, if exists, you can open the file in the append mode
The code is something like this
File f = new File(oldName);
if(f.exists() && !f.isDirectory()) {
long currentTime=System.currentTimeMillis();
String newName=oldName+currentTime;
// do the copy
}
I've been trying to copy a directory recursively from an NFS mount to the local file system in Java. I first tried using FileUtils in Apache Utils. Sadly, it didn't copy recursively (walking through sub-directories, etc.) so I had to go back to the drawing board. I heard that some of those operations are "finicky" when they are cross-device. I was then suggested to try and use linux commands, so I tried doing so:
Process process = new ProcessBuilder()
.command("cp -R " + source.getAbsolutePath() + " " + dest.getAbsolutePath())
.start();
process.waitFor();
That sadly threw a response of "no such file or directory", I slapped on some debug on there and tried again. Even though I got "no such file or directory", my debug stated that both the source and destination directories exist, as well as after checking manually if they exist.
Alright, so I decided to write my own implementation and oddly enough it worked. Sadly, I have little-to-no knowledge why this worked over FileUtils. Here is what I wrote:
private void copy(File source, File destination) throws IOException {
if (source.isDirectory()) {
if (!destination.exists()) {
destination.mkdir();
}
if (destination.isFile()) {
destination.delete();
destination.mkdir();
}
for (File src : source.listFiles()) {
File dest = new File(destination, src.getName());
copy(src, dest);
}
} else {
destination.createNewFile();
FileInputStream input = new FileInputStream(source);
FileOutputStream out = new FileOutputStream(destination);
byte[] buffer = new byte[2048];
int l;
while ((l = input.read(buffer)) > 0) {
out.write(buffer, 0, l);
}
input.close();
out.close();
}
}
Could anybody help me with my java zip extractor as stated in the title I keep getting java.io.FileNotFoundException on the folders with files in them
public void UnZip() {
try {
byte[] data = new byte[1000];
int byteRead;
BufferedOutputStream bout = null;
ZipInputStream zin = new ZipInputStream(new BufferedInputStream(new FileInputStream(sourceFile)));
ZipEntry entry;
while ((entry = zin.getNextEntry()) != null) {
String filename = entry.getName();
File newfile = new File(Deobf2 + File.separator + filename);
System.out.println("file unzip : " + newfile.getAbsoluteFile());
new File(newfile.getParent()).mkdirs();
FileOutputStream fos = new FileOutputStream(newfile);
int len;
while ((len = zin.read(data)) > 0) {
fos.write(data, 0, len);
}
fos.close();
entry = zin.getNextEntry();
}
zin.closeEntry();
zin.close();
System.out.println("Done");
} catch (Exception e) {
e.printStackTrace();
}
}
error log
http://pastebin.com/crMKaa37
values
static String tempDir = System.getProperty("java.io.tmpdir");
public static File Deobf = new File(tempDir + "Deobf");
public static String Deobf2 = Deobf.toString();
entire code paste
http://pastebin.com/1vTfABR1
I have copy pasted same code and it is working fine. I think u dont have administrator permission on C drive. login As Administrator and run . it will work.
Access Denied Exception will come when u don have administrator level of permission on C drive.
The problem is Your doing
String Deobf2 = Deobf.toString();//this does not give the location of the file
use
file.getAbsolutePath();
in your case Deobf.getAbsolutePath();
instead. Check http://www.mkyong.com/java/how-to-get-the-filepath-of-a-file-in-java/
if you want to get the path only till the parent directory check this How to get absolute path of directory of a file?
Problem fixed changed some code
for anyone whos wants a copy of the working zip extraction code here you go http://pastebin.com/bXL8pUSg
The variable Deobf2 in the output of the zip
I am Trying to Copy Single file from Source to Destination using Java but getting following Error message.
java.io.FileNotFoundException: Following is the method
public void copy_single(String source,String dest,String filename)
{
try
{ System.out.println(source + "" + filename);
System.out.println(dest + "" + filename);
File inputFile = new File(source+""+filename);
File outputFile = new File(dest+""+filename);
Process proc0 = Runtime.getRuntime().exec("chmod -R 777 "+inputFile+"");
proc0.waitFor();
Process proc1 = Runtime.getRuntime().exec("chmod -R 777 "+outputFile+"");
proc1.waitFor();
FileReader in = new FileReader(inputFile);
FileWriter out = new FileWriter(outputFile);
int c;
while ((c = in.read()) != -1)
out.write(c);
in.close();
out.close();
} catch(Exception e) {
e.printStackTrace();
System.out.println("Error: Operation failed!");
}
}
Output:-
/home/root/Tool/AAputDelta.sh
/home/root/Desktop/Sqa/BaseLine/Engine/AAputDelta.sh
java.io.FileNotFoundException: /home/root/Desktop/Sqa/BaseLine/Engine/AAputDelta.sh (No such file or directory)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:194)
at java.io.FileOutputStream.<init>(FileOutputStream.java:145)
How to copy simple file using java.
Suspect that some or all of dest output path may not exist. If this is the case you could use File.mkdirs to build the path.
Also, rather than building the file from strings, would suggest allowing File handle all this, e.g.:
File inputFile = new File(source, filename);
File outputFile = new File(dest, filename);
Use apache commons FileUtils. Any of these should be sufficient
FileUtils.copyFile(File srcFile, File destFile)
FileUtils.copyFile(File srcFile, File destFile, boolean preserveFileDate)
FileUtils.copyFileToDirectory(File srcFile, File destDir)
FileUtils.copyFileToDirectory(File srcFile, File destDir, boolean preserveFileDate)
You can use FileUtils from commons-io :
http://commons.apache.org/io/apidocs/org/apache/commons/io/FileUtils.html
or the Files from Java 7 :
http://docs.oracle.com/javase/7/docs/api/java/nio/file/Files.html
java.io.FileNotFoundException Means that some file was not found so check the values :
source
dest
filename
source+""+filename
dest+""+filename
If the file doesn't exist, the filesystem will try to create the file. If creation fails, Java will throw FileNotFountException.
Maybe you need add
File outputFile = new File(dest+""+filename);
if(!outputFile.exist())outputFile.createNewFile();
I have a java program as below for zipping a folder as a whole.
public static void zipDir(String dir2zip, ZipOutputStream zos)
{
try
{
File zipDir= new File(dir2zip);
String[] dirList = zipDir.list();
byte[] readBuffer = new byte[2156];
int bytesIn = 0;
for(int i=0; i<dirList.length; i++)
{
File f = new File(zipDir, dirList[i]);
if(f.isDirectory())
{
String filePath = f.getPath();
zipDir(filePath, zos);
continue;
}
FileInputStream fis = new FileInputStream(f);
ZipEntry anEntry = new ZipEntry(f.getPath());
zos.putNextEntry(anEntry);
while((bytesIn = fis.read(readBuffer)) != -1)
{
zos.write(readBuffer, 0, bytesIn);
}
fis.close();
}
}
catch(Exception e)
{
e.printStackTrace();
}
}
public static void main(){
String date=new java.text.SimpleDateFormat("MM-dd-yyyy").format(new java.util.Date());
ZipOutputStream zos = new ZipOutputStream(new FileOutputStream("Output/" + date + "_RB" + ".zip"));
zipDir("Output/" + date + "_RB", zos);
zos.close();
}
My query here is. The target folder(+date+_RB) to be zipped is present inside the folder named Output. After successful zipping, when I extract the zipped file, I find a folder Output inside which the (+date+_RB) required folder is present. I need not want that Output folder after the extraction of the zipped file, rather it should directly extract the required folder alone. Please advise on the same.
UPDATE:
I tried Isaac's answer. While extracting the resultant zip file, no folders are getting extracted. Only the files inside all the folders are getting extracted. I just dont need the folder "Output" alone in the resultant zip file. But what the program does is, it doesnt extracts all other folders inside the Output folder, rather it just extracts the files inside those folders. Kindly advise on how to proceed...
It happens because of this:
ZipEntry anEntry = new ZipEntry(f.getPath());
f.getPath() will return Output/ at the beginning of the string. This is due to the flow of your program and how it (mis)uses File objects.
I suggest you construct a File object called, say, tmp:
File tmp = new File(dirList[i]);
The change the construction of f:
File f = new File(zipDir, tmp.getPath());
Then, change this:
ZipEntry anEntry = new ZipEntry(f.getPath());
To this:
ZipEntry anEntry = new ZipEntry(tmp.getPath());
I didn't have time to actually test it, but in a nutshell, your problem is due to how the File object is constructed.