@WebFilter(urlPatterns = "/*")
@Order(value = 1)
public class TestFilter implements Filter {
 
    private static final Set<String> ALLOWED_PATHS = Collections.unmodifiableSet(new HashSet<>(
            Arrays.asList("/main/excludefilter", "/login", "/logout", "/register")));
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        System.out.println("init-----------filter");
    }
 
    @Override
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response = (HttpServletResponse) res;
        String path = request.getRequestURI().substring(request.getContextPath().length()).replaceAll("[/]+$", "");
        boolean allowedPath = ALLOWED_PATHS.contains(path);
 
        if (allowedPath) {
            System.out.println("這里是不需要處理的url進入的方法");
            chain.doFilter(req, res);
        }
        else {
            System.out.println("這里是需要處理的url進入的方法");
        }
    }
 
    @Override
    public void destroy() {
        System.out.println("destroy----------filter");
    }
}

//過濾所有路徑
@Component
public class WebFilter implements Filter(){
//override三個方法
。。。
。。。
@Override
 public void init (FilterConfig filterConfig) throws ServletException{
 System.out.println("初始化filter");
 }
}