修改路由

路由信息等存储在ServerWebExchange的属性中的，修改后重新存进去接口覆盖

import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.cloud.gateway.route.Route;
import org.springframework.cloud.gateway.support.ServerWebExchangeUtils;
import org.springframework.core.Ordered;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

import java.net.URI;

@Slf4j
@Component
public class ModifyRequestFilter implements GlobalFilter, Ordered {
 
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        
        URI uri = URI.create("baidu.com");
        //修改路由
        Route route = exchange.getAttribute(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR);
        Route newRoute = Route.async()
                .asyncPredicate(route.getPredicate())
                .filters(route.getFilters())
                .id(route.getId())
                .order(route.getOrder())
                .uri(uri).build();
 
        exchange.getAttributes().put(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR,newRoute);
        return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return Ordered.HIGHEST_PRECEDENCE;;
    }
}
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参考:https://blog.csdn.net/djrm11/article/details/114380867