SpringCloudGateway之限流集成篇

在Spring Cloud Gateway中实现限流（Rate Limiting）可以通过集成Spring Cloud Gateway的熔断和限流功能以及第三方限流组件如Sentinel或Resilience4j。

SpringCloudGateway与Sentinel组件集成

添加依赖

首先确保项目包含Spring Cloud Gateway和Sentinel相关依赖。
<dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-gateway</artifactId></dependency><!-- Sentinel Spring Cloud Gateway Adapter --><dependency><groupId>com.alibaba.csp</groupId><artifactId>sentinel-adapter-spring-cloud-gateway-2.x</artifactId><version>{sentinel-version}</version></dependency><!-- Sentinel Core --><dependency><groupId>com.alibaba.csp</groupId><artifactId>sentinel-core</artifactId><version>{sentinel-version}</version></dependency>
</dependencies>

配置Sentinel

在application.yml或application.properties文件中配置Sentinel的相关参数

spring:cloud:sentinel:transport:dashboard: localhost:8080 # Sentinel控制台地址port: 8719 # Sentinel与控制台之间的通讯端口filter:url-patterns: "/api/**" # 需要进行限流处理的路由路径

启用Sentinel Gateway适配器

创建一个配置类以启用Sentinel适配器，并注册到Spring容器中

import com.alibaba.csp.sentinel.adapter.gateway.sc.SentinelGatewayFilter;
import com.alibaba.csp.sentinel.adapter.gateway.sc.config.SentinelGatewayConfig;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;@Configuration
public class SentinelGatewayConfiguration {@Beanpublic GlobalFilter sentinelGatewayFilter() {return new SentinelGatewayFilter();}@Beanpublic SentinelGatewayConfig sentinelGatewayConfig() {return new SentinelGatewayConfig();}
}