فشرده کردن فایل

[ramin_B]

سلام

میخوام یه فایل رو zip کنم از کد زیر استفاده کردم اما خطا acces dinaied میدهد به نظر شما اشکال کجاست



public void getZipFiles(String zipFile, String destFolder) throws IOException {
BufferedOutputStream dest = null;
ZipInputStream zis = new ZipInputStream(new BufferedInputStream(new FileInputStream(zipFile)));




ZipEntry entry;
while (( entry = zis.getNextEntry() ) != null) {
System.out.println( "Extracting: " + entry.getName() );
int count;
byte data[] = new byte[1000];


if (entry.isDirectory()) {
new File( destFolder + "/" + entry.getName() ).mkdirs();
continue;
} else {
int di = entry.getName().lastIndexOf( '/' );
if (di != -1) {
new File( destFolder + "/" + entry.getName().substring( 0, di ) ).mkdirs();
}
}


FileOutputStream fos = new FileOutputStream( destFolder + "/" + entry.getName() );
dest = new BufferedOutputStream( fos );


while (( count = zis.read( data ) ) != -1) {
dest.write( data, 0, count );
}


dest.flush();
dest.close();

[ahmad.mo74]

سلام

در واقع دارید فایل زیپ رو اکسترکت میکنید!

اررور Access Denied موقعی رخ میده که شما سعی میکنید آدرس یه فولدر (directory) رو به FileOutputStream یا ... بدید و باهاش به عنوان یه فایل برخورد کنی.
یعنی خطوط 26 تا 36 باید بره داخل else.

من یه نمونه کامل نوشتم امیدوارم به دردت بخوره :


import java.io.*;
import java.nio.ByteBuffer;
import java.nio.channels.Channels;
import java.nio.channels.FileChannel;
import java.nio.channels.ReadableByteChannel;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;


/**
* @author avb
*/
public class Zipper {


public static boolean unzip(String fileName, String output) throws IOException {
File zipFile = new File(fileName);
if (!zipFile.exists() || zipFile.isDirectory()) {
return false;
}
if (output != null) {
createDirectories(output);
} else {
output = zipFile.getParent();
}
try (ZipInputStream zipInputStream = new ZipInputStream(readFully(zipFile))) {
ZipEntry entry;
while ((entry = zipInputStream.getNextEntry()) != null) {
File file = new File(output + File.separator + entry.getName());
createDirectories(file.getParent());
if (!entry.isDirectory()) {
save(Channels.newChannel(zipInputStream), file);
}
}
}
return true;
}


public static boolean unzip(String fileName) throws IOException {
return unzip(fileName, null);
}


public static boolean unzipToFolder(String fileName) throws IOException {
return unzip(fileName, fileName.substring(0, fileName.lastIndexOf('.')));
}


private static InputStream readFully(File file) throws IOException {
try (FileChannel in = FileChannel.open(Paths.get(file.getCanonicalPath() ));
ByteArrayOutputStream out = new ByteArrayOutputStream()) {
ByteBuffer buffer = ByteBuffer.allocate(64 * 1024);
in.force(false);
while (in.read(buffer) >= 0 || buffer.position() > 0) {
buffer.flip();
out.write(buffer.array());
buffer.clear();
}
return new ByteArrayInputStream(out.toByteArray());
}
}


private static void createDirectories(String fileName) throws IOException {
Path path = Paths.get(fileName);
if (Files.notExists(path)) {
Files.createDirectories(path);
}
}


private static void save(ReadableByteChannel in, File file) throws IOException {
try (FileOutputStream fileOutputStream = new FileOutputStream(file);
FileChannel out = fileOutputStream.getChannel()) {
long pos = 0, count = 64 * 1024, transferred;
while ((transferred = out.transferFrom(in, pos, count)) > 0) {
pos += transferred;
}
}
}


public static void main(String[] args) throws IOException {
String fileName = "D:/Some.zip";
System.out.println(unzip(fileName));
System.out.println(unzip(fileName, "D:/output"));
System.out.println(unzipToFolder(fileName));
}


}