SSH中OpenAndView

package fiter;

import java.io.File;
import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.hibernate.HibernateException;
import org.hibernate.Transaction;

import util.HibernateUtil;

public class OpenAndView implements Filter{
public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2)
throws IOException, ServletException {
Transaction tx = null;
try {
tx = HibernateUtil.currentSession().beginTransaction();
arg2.doFilter(arg0, arg1);
tx.commit();
} catch (HibernateException e) {
e.printStackTrace();
if (tx != null) {
tx.rollback();
}
}
}

@Override
public void destroy() {
// TODO Auto-generated method stub

}

@Override
public void init(FilterConfig filterConfig) throws ServletException {
// TODO Auto-generated method stub

}
}