New technology always sounds very good, but you always use it to new work, mainly, there is no advantage of new technology, I don't know if I use any benefits, such as Struts, When you start, use JSP, what code is put in JSP, so it is very difficult to detect this error, now put the code in Bean, forming JSP Bean, but basically every JSP needs to be a bean. BEAN's functionality is JSP from which data is extracted, and beans have to extract data from the database, and it is still very troublesome to manage. This place is basically all of themselves in exploration technology, feeling good, nothing is just looking at others. It seems that you will pay more attention to your next step, and you do more things.