過濾器

@Component
public class AddResponseHeaderFilter extends OncePerRequestFilter {
    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {

        String header = response.getHeader("Set-Cookie");
        Collection
 
<String> headerNames = response.getHeaderNames();
        System.out.println("___________________");
        System.out.println(header);
        System.out.println("___________________");
        filterChain.doFilter(request, response);
    }
}

攔截器

public class HttpResponseInterceptorHandler implements
 
 HandlerInterceptor {
    // 實現HandlerInterceptor  或者 繼承HandlerInterceptorAdapter都可以,如果想看著簡潔就使用後者
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        response.addHeader("content-test","123");
        return true
 
;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }
}