java.lang.IllegalArgumentException: Invalid or unreadable WAR file : error in opening zip file

Question

I got this error in Catalina.2011-03-30.log when my display.war file executed on Tomcat. The error is shown below:

Mar 30, 2011 8:01:31 PM org.apac         


        

Answer 1

Same problem here. war file can be opened by 7-zip.

Edit: I figured out why. "Invalid or unreadable WAR file : error in opening zip file" is definitely a confusing error message. The real reason is simply "Tomcat unable to deploy the war because there are some initializing errors". In my case, my War file is missing a few config files which throws out file not found exception. Different Tomcat version seems to report different errors. On 6.0.26, it correctly reports the error. But on 6.0.32, it reports the confusing "Invalid or unreadable WAR file".