Spring Cloud Gateway 4.2.1

该项目提供了一个用于在 Spring 上构建 API 网关的库。Spring Cloud Gateway 旨在提供一种简单而有效的方法来路由到 API，并为它们提供横切关注点，例如：安全性、监控/指标和弹性。

特征

Spring Cloud 网关功能：

• 基于 Spring Framework 和 Spring Boot 构建
• 与 Spring WebFlux 和 Spring Web MVC 兼容
• 能够匹配任何请求属性的路由。
• 谓词和筛选条件特定于路由。
• Spring Cloud Circuit Breaker 集成。
• Spring Cloud DiscoveryClient 集成
• 易于编写的谓词和过滤器
• 请求速率限制
• 路径重写

Spring Cloud 网关服务器 WebFlux 入门

@SpringBootApplication
public class DemogatewayApplication {
	@Bean
	public RouteLocator customRouteLocator(RouteLocatorBuilder builder) {
		return builder.routes()
			.route("path_route", r -> r.path("/get")
				.uri("https://httpbin.org"))
			.route("host_route", r -> r.host("*.myhost.org")
				.uri("https://httpbin.org"))
			.route("rewrite_route", r -> r.host("*.rewrite.org")
				.filters(f -> f.rewritePath("/foo/(?<segment>.*)", "/${segment}"))
				.uri("https://httpbin.org"))
			.route("circuit_breaker_route", r -> r.host("*.circuitbreaker.org")
				.filters(f -> f.circuitBreaker(c -> c.setName("slowcmd")))
				.uri("https://httpbin.org"))
			.route("circuit_breaker_fallback_route", r -> r.host("*.circuitbreakerfallback.org")
				.filters(f -> f.circuitBreaker(c -> c.setName("slowcmd").setFallbackUri("forward:/circuitbrekerfallback")))
				.uri("https://httpbin.org"))
			.route("limit_route", r -> r
				.host("*.limited.org").and().path("/anything/**")
				.filters(f -> f.requestRateLimiter(c -> c.setRateLimiter(redisRateLimiter())))
				.uri("https://httpbin.org"))
			.build();
	}
}

要运行您自己的网关服务器 WebFlux，请使用依赖项。spring-cloud-starter-gateway

Spring Cloud Gateway Server Web MVC 入门

import static org.springframework.cloud.gateway.server.mvc.handler.GatewayRouterFunctions.route;
import static org.springframework.cloud.gateway.server.mvc.filter.BeforeFilterFunctions.*;
import static org.springframework.cloud.gateway.server.mvc.predicate.GatewayRequestPredicates.*;

//...

@SpringBootApplication
public class DemogatewayApplication {
    @Bean
    public RouterFunction<ServerResponse> customRoutes() {
        // @formatter:off
        return route("path_route")
                .GET("/get", http())
                .before(uri("https://httpbin.orb"))
            .build().and(route("host_route")
                .route(host("*.myhost.org"), http())
                .before(uri("https://httpbin.orb"))
            .build().and(route("rewrite_route")
                .route(host("*.rewrite.org"), http())
                .before(uri("https://httpbin.orb"))
                .before(rewritePath("/foo/(?<segment>.*)", "/${segment}"))
            .build().and(route("circuitbreaker_route")
                .route(host("*.circuitbreaker.org"), http())
                .before(uri("https://httpbin.orb"))
                .filter(circuitBreaker("slowcmd"))
            .build().and(route("circuitbreaker_fallback_route")
                .route(host("*.circuitbreakerfallback.org"), http())
                .before(uri("https://httpbin.orb"))
                .filter(circuitBreaker(c -> c.setId("slowcmd").setFallbackUri("forward:/fallback")))
            .build().and(route("limit_route")
                .route(host("*.limited.org").and(path("/anything/**")), http())
                .before(uri("https://httpbin.orb"))
                .filter(rateLimit(c -> c.setCapacity(10).setPeriod(Duration.ofSeconds(1)).setKeyResolver(request ->
                        request.headers().firstHeader("X-TokenId"))))
            .build())))));
        // @formatter:on
    }
}

要运行您自己的网关服务器 WebMVC，请使用依赖项。spring-cloud-starter-gateway-mvc