问题 Hi I am quite new to zip format, and I used the Java's util implementation to unzip a file, However it throws a ZipException everytime I try to open the file. I checked to see if the file was corrupted and it is not because I can open it using winRar. So I moved on and tried appache.commons.vfs package to do the same thing and that too resulted in a failure. As a final try I tried the library 7-zip-jbinding and that is able to read the contents of the Zip archive but I am not able to extract