Spring Cloud Gateway请求路径修改指南：详解ServerWebExchange的完美解决方案及代码示例

import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

public class RedirectFilter implements GlobalFilter, Ordered {

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        ServerHttpRequest request = exchange.getRequest();
        String path = request.getURI().getPath();

        // 检查路径是否需要修改
        if (path.startsWith("/system/user/list")) {
            String newPath = path.replace("/system/user/list", "/system_aaa/user/list");
            ServerHttpRequest modifiedRequest = request.mutate().path(newPath).build();
            ServerWebExchange modifiedExchange = exchange.mutate().request(modifiedRequest).build();
            return chain.filter(modifiedExchange);
        }

        return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return -1; // 设置为高优先级
    }
}