1 package tw.com.javaworld.CH11;
2 
3 import java.io.*;
4 import javax.servlet.*;
5 import javax.servlet.http.*;
6 
7 public class HelloFilter implements Filter {
8     
9     public void init(FilterConfig config) throws ServletException {
10    }
11    
12    public void doFilter(
13        ServletRequest request,
14        ServletResponse response,
15        FilterChain chain)
16        throws IOException, ServletException {
17    
18        System.out.println("Hello Filter !!");
19        chain.doFilter(request, response);
20    }
21    
22    public void destroy() {
23    }
24}