问题
I'm trying to modify an existing .zip file and then creating a modified copy.
I can easily do that to all files except for a .png file in the zip file, which results in error
java.util.zip.ZipException: invalid entry compressed size (expected 113177 but got 113312 bytes)
The following code is what I'm trying to run to simply copy a .png image from dice.zip and adding it to diceUp.zip.
public class Test {
public static void main(String[] args) throws IOException{
ZipFile zipFile = new ZipFile("dice.zip");
final ZipOutputStream zos = new ZipOutputStream(new FileOutputStream("diceUp.zip"));
for(Enumeration<? extends ZipEntry> e = zipFile.entries(); e.hasMoreElements(); ) {
ZipEntry entryIn = (ZipEntry) e.nextElement();
if(entryIn.getName().contains(".png")){
System.out.println(entryIn.getName());
zos.putNextEntry(entryIn);
InputStream is = zipFile.getInputStream(entryIn);
byte [] buf = new byte[1024];
int len;
while((len = (is.read(buf))) > 0) {
zos.write(buf, 0, (len < buf.length) ? len : buf.length);
}
}
zos.closeEntry();
}
zos.close();
}
回答1:
Just create new ZipEntry object with the name of entryIn object and put this new object in zos.putNextEntry .
Look at this qustion!
And this is my code:
public static void main(String[] args) throws IOException {
ZipFile zipFile = new ZipFile("/home/*********/resources/dice.zip");
// ZipFile zipFile = new ZipFile();
final ZipOutputStream zos = new ZipOutputStream(new FileOutputStream("diceUp.zip"));
for (Enumeration<? extends ZipEntry> e = zipFile.entries(); e.hasMoreElements(); ) {
ZipEntry entryIn = e.nextElement();
if (entryIn.getName().contains(".png")) {
System.out.println(entryIn.getName());
ZipEntry zipEntry = new ZipEntry(entryIn.getName());
zos.putNextEntry(zipEntry);
InputStream is = zipFile.getInputStream(entryIn);
byte[] buf = new byte[1024];
int len;
while ((len = (is.read(buf))) > 0) {
// zos.write(buf, 0, (len < buf.length) ? len : buf.length);
zos.write(buf);
}
}
zos.closeEntry();
}
zos.close();
}
来源：https://stackoverflow.com/questions/37645153/error-java-util-zip-zipexception-invalid-entry-size-while-copying-image-png