Struts2如何在jsp中获取ActionError计数

Question

In Struts2 I have successfully implemented an updateErrorCount() method that updates a class member variable every time addActionError() is called through out various action classes. I can then access that variable with a property tag in the associated jsp . However, I am looking for a better solution. Since the s:actionerror tag lists all of the errors added, is there a way to use an iterator tag or some other solution to display the error count along with all of the error messages right in the jsp ?

I thought about overriding addActionError() to avoid having to call an additional method to keep an error count but if I could simply do it all in the jsp it seems much cleaner.

Answer 1

getActionErrors returns a collection , why can't you just call size on that?

I see few legitimate reasons to implement any of this functionality manually.

If you have specific needs you should enumerate them in your question, otherwise I don't see the point of doing this on your own.