springcloud-gateway網關（自定義filter）

@Configuration
@Slf4j
public class CustomGlobalFilter implements GlobalFilter, Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {

        log.info("進入自定義的filter");
        if (exchange.getRequest().getQueryParams().get("username") != null) {

            log.info("用戶身份信息合法,放行請求繼續執行!!!");
            return chain.filter(exchange);//放行請求
        }
        log.info("非法用戶,拒絕訪問!!!");
        return exchange.getResponse().setComplete();
    }

    @Override
    public int getOrder() {
        return -1;
    }
}