Filter 구현 public class FirstFilter implements Filter { // (1) 초기화 작업 public void init(FilterConfig filterConfig) throws ServletException { Filter.super.init(filterConfig); System.out.println("First Filter 생성"); } // (2) public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { // (2-1) request(ServletRequest)를 이용해 다음 Filter로 ..
