I use FileUploadInterceptor to upload files,and I set the webwork.multipart.maxSize=12345.When I upload a file whose size is lager than 12345,it will throw NPE.I view the exception stack trace,and found it was thrown at
 // Bind allowed Files
while (e.hasMoreElements())

When I change it as
 // Bind allowed Files
 while (e!= null && e.hasMoreElements()) {

.....

// cleanup
e = multiWrapper.getFileParameterNames();

while (e!= null && e.hasMoreElements()) {

everything is oK.

Is this a bug?

Thanks.