SpringCloud学习（十七）：Gateway网关的自定义全局GlobalFilter

@Component
@Slf4j
public class MyLogGateWayFilter implements GlobalFilter, Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        log.info("=============  come in MyLogGateWayFilter:   "+ new Date());
        String uname = exchange.getRequest().getQueryParams().getFirst("uname");
        if (uname == null){
            log.info("============  用户名为null，非法用户   ==============");
            exchange.getResponse().setStatusCode(HttpStatus.NOT_ACCEPTABLE);
            return exchange.getResponse().setComplete();
        }
        return chain.filter(exchange);
    }
    @Override
    public int getOrder() {
        return 0;
    }
}