In my case I have to download images from the resources folder in my web app. Right now I am using the following code to download images through URL.
url = new URL(properties.getOesServerURL() + "//resources//WebFiles//images//" + imgPath);
filename = url.getFile();
is = url.openStream();
os = new FileOutputStream(sClientPhysicalPath + "//resources//WebFiles//images//" + imgPath);
b = new byte[2048];
while ((length = is.read(b)) != -1) {
os.write(b, 0, length);
}
But I want a single operation to read all images at once and create a zip file for this. I don't know so much about the use of sequence input streams and zip input streams so if it is possible through these, please let me know.
The only way I can see you being able to do this is something like the following:
try {
ZipOutputStream zip = new ZipOutputStream(new FileOutputStream("C:/archive.zip"));
//GetImgURLs() is however you get your image URLs
for(URL imgURL : GetImgURLs()) {
is = imgURL.openStream();
zip.putNextEntry(new ZipEntry(imgURL.getFile()));
int length;
byte[] b = new byte[2048];
while((length = is.read(b)) > 0) {
zip.write(b, 0, length);
}
zip.closeEntry();
is.close();
}
zip.close();
}