Spring Cloud Gateway整合Sentinel流控降级
https://github.com/alibaba/Sentinel/wiki/%E7%BD%91%E5%85%B3%E9%99%90%E6%B5%81
pom.xml
<!-- sentinel 启动器 --> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId> </dependency> <!-- sentinel 整合 gateway --> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-alibaba-sentinel-gateway</artifactId> </dependency>
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <parent> <artifactId>springcloudalibaba</artifactId> <groupId>com.wsm.springcloud</groupId> <version>0.0.1-SNAPSHOT</version> </parent> <modelVersion>4.0.0</modelVersion> <artifactId>gateway</artifactId> <dependencies> <!-- gateway的依赖 springcloud开发 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-gateway</artifactId> </dependency> <!-- nacos 服务注册发现 --> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId> </dependency> <!-- sentinel 启动器 --> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId> </dependency> <!-- sentinel 整合 gateway --> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-alibaba-sentinel-gateway</artifactId> </dependency> </dependencies> </project>
application.yml
server: port: 8060 spring: application: name: api-gateway cloud: # gateway的配置 gateway: # 路由规则 routes: - id: order_route # 路由的唯一标识， 路由到 order # uri: http://localhost:8020 # 需要转发的地址 uri: lb://order-nacos-service # 需要转发的地址 lb：使用nacos中的本地负载均衡策略 # 断言规则 用于路由规则的匹配 predicates: - Path=/order-serv/** # http://localhost:8060/order-serv/order/add 路由转到 # http://localhost:8020/order-serv/order/add # - After=2017-01-20T17:42:47.789-07:00[Asia/Shanghai] # - Header=X-Request-Id,\d+ # - Method=GET # - Query=name,zhangsan|lisi # - CheckAuth=lisi filters: - StripPrefix=1 # 转发之前去掉第一层路径 # http://localhost:8020/order-serv/order/add 过虑成 # http://localhost:8020/order/add # - AddRequestHeader=X-Request-color, blue # - AddRequestParameter=color, red - PrefixPath=/mall-order #添加前缀， 对应微服务需要配置context-path # - RedirectTo=302, https://www.baidu.com/ #重定向到百度 # - SetStatus=404 # - CheckAuth=lisi #跨域配置 # globalcors: # cors-configurations: # '[/**]': # 允许蹃域访问的资源 ## allowedOrigins: "https://docs.spring.io" # 跨域允许来源 # allowedOrigins: "*" # 跨域允许来源 # allowedMethods: # - GET # - POST # 配置 Nacos nacos: server-addr: 127.0.0.1:8848 discovery: # server-addr: 127.0.0.1:8848 username: nacos password: nacos namespace: public sentinel: transport: dashboard: 127.0.0.1:8858
package com.wsm.config; import com.alibaba.csp.sentinel.adapter.gateway.sc.callback.BlockRequestHandler; import com.alibaba.csp.sentinel.adapter.gateway.sc.callback.GatewayCallbackManager; import org.springframework.context.annotation.Configuration; import org.springframework.http.HttpStatus; import org.springframework.http.MediaType; import org.springframework.web.reactive.function.BodyInserters; import org.springframework.web.reactive.function.server.ServerResponse; import org.springframework.web.server.ServerWebExchange; import reactor.core.publisher.Mono; import javax.annotation.PostConstruct; import java.util.HashMap; @Configuration public class GatewayConfig { @PostConstruct public void init() { BlockRequestHandler blockRequestHandler = new BlockRequestHandler() { @Override public Mono<ServerResponse> handleRequest(ServerWebExchange serverWebExchange, Throwable throwable) { System.out.println("========="+throwable); HashMap<String,String> map = new HashMap(); map.put("code",HttpStatus.TOO_MANY_REQUESTS.toString()); map.put("message","限流了"); //自定义异常处理 return ServerResponse.status(HttpStatus.OK) .contentType(MediaType.APPLICATION_JSON) .body(BodyInserters.fromValue(map)); } }; GatewayCallbackManager.setBlockHandler(blockRequestHandler); } }
server: port: 8060 spring: application: name: api-gateway cloud: # gateway的配置 gateway: # 路由规则 routes: - id: order_route # 路由的唯一标识， 路由到 order # uri: http://localhost:8020 # 需要转发的地址 uri: lb://order-nacos-service # 需要转发的地址 lb：使用nacos中的本地负载均衡策略 # 断言规则 用于路由规则的匹配 predicates: - Path=/order-serv/** # http://localhost:8060/order-serv/order/add 路由转到 # http://localhost:8020/order-serv/order/add # - After=2017-01-20T17:42:47.789-07:00[Asia/Shanghai] # - Header=X-Request-Id,\d+ # - Method=GET # - Query=name,zhangsan|lisi # - CheckAuth=lisi filters: - StripPrefix=1 # 转发之前去掉第一层路径 # http://localhost:8020/order-serv/order/add 过虑成 # http://localhost:8020/order/add # - AddRequestHeader=X-Request-color, blue # - AddRequestParameter=color, red - PrefixPath=/mall-order #添加前缀， 对应微服务需要配置context-path # - RedirectTo=302, https://www.baidu.com/ #重定向到百度 # - SetStatus=404 # - CheckAuth=lisi #跨域配置 # globalcors: # cors-configurations: # '[/**]': # 允许蹃域访问的资源 ## allowedOrigins: "https://docs.spring.io" # 跨域允许来源 # allowedOrigins: "*" # 跨域允许来源 # allowedMethods: # - GET # - POST # 配置 Nacos nacos: server-addr: 127.0.0.1:8848 discovery: # server-addr: 127.0.0.1:8848 username: nacos password: nacos namespace: public sentinel: transport: dashboard: 127.0.0.1:8858 scg: fallback: response-body: "{code:'10001',message:'1001 test'}" mode: response
