Code
JButton button1 = new JButton("unzip");
button1.addActionListener(e -> {
String str = field.getText();
Path path = Paths.get(str);
if (str.isEmpty() || Files.notExists(path)) {
return;
}
String name = Objects.toString(path.getFileName());
int lastDotPos = name.lastIndexOf('.');
if (lastDotPos > 0) {
name = name.substring(0, lastDotPos);
}
Path destDir = path.resolveSibling(name);
try {
if (Files.exists(destDir)) {
String m = String.format(
"%s already exists.
Do you want to overwrite it?",
destDir.toString());
int rv = JOptionPane.showConfirmDialog(
button1.getRootPane(), m, "Unzip", JOptionPane.YES_NO_OPTION);
if (rv != JOptionPane.YES_OPTION) {
return;
}
} else {
if (LOGGER.isLoggable(Level.INFO)) {
LOGGER.info("mkdir0: " + destDir.toString());
}
Files.createDirectories(destDir);
}
ZipUtil.unzip(path, destDir);
} catch (IOException ex) {
ex.printStackTrace();
}
});
// ...
public static void unzip(Path zipFilePath, Path destDir) throws IOException {
try (ZipFile zipFile = new ZipFile(zipFilePath.toString())) {
Enumeration e = zipFile.entries();
while (e.hasMoreElements()) {
ZipEntry zipEntry = e.nextElement();
String name = zipEntry.getName();
Path path = destDir.resolve(name);
if (name.endsWith("/")) { // if (Files.isDirectory(path)) {
log("mkdir1: " + path.toString());
Files.createDirectories(path);
} else {
Path parent = path.getParent();
if (Files.notExists(parent)) {
log("mkdir2: " + parent.toString());
Files.createDirectories(parent);
}
log("copy: " + path.toString());
Files.copy(zipFile.getInputStream(zipEntry),
path, StandardCopyOption.REPLACE_EXISTING);
}
}
}
}
//...
public static void zip(Path srcDir, Path zip) throws IOException {
try (Stream s = Files.walk(srcDir).filter(Files::isRegularFile)) {
List files = s.collect(Collectors.toList());
try (ZipOutputStream zos = new ZipOutputStream(Files.newOutputStream(zip))) {
for (Path f: files) {
String relativePath = srcDir.relativize(f).toString();
ZipEntry ze = new ZipEntry(relativePath.replace('\\', '/'));
zos.putNextEntry(ze);
Files.copy(f, zos);
}
}
}
}
References
