nacos gateway动态路由实战
目录
- nacos gateway动态路由
- 一、引入本次测试需要的pom依赖
- 二、配置文件设置(*配置文件不生效的把名字改为bootstrap.yml)
- 三、动态路由实现
- 四、nacos配置中心设置
- 五、测试
- gateway网关相关配置
- 在启动类中添加注解@EeableDiscoveryClient
- 配置nacos注册中心地址
- bootstrap.properties 填写配置中心地址
- nacos里创建命名空间gateway
- 在主类中屏蔽数据源
- 在项目里创建application.yml
nacos gateway动态路由
说明:本次测试使用的gateway是2.2.2.RELEASE版本,其他版本可能存在不同
一、引入本次测试需要的pom依赖
<!--gateway网关依赖--> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-gateway</artifactId> </dependency> <!--nacos依赖--> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId> </dependency> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId> </dependency> <!--json工具包--> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.47</version> </dependency>
二、配置文件设置(*配置文件不生效的把名字改为bootstrap.yml)
server: port: 8200 spring: application: name: lc-gateway cloud: nacos: discovery: #注册中心地址 server-addr: 106.12.146.239:8848 config: server-addr: 106.12.146.239:8848 # 配置中心-指定命名空间 namespace: bb79a8c4-e4e1-4a27-bceb-0810f278b5aa # 指定配置文件后缀 file-extension: yaml #配置组 group: DEFAULT_GROUP #配置dateId data-id: lc-gateway #获取配置超时时间 timeout: 5000 gateway: #设置超时时间默认 httpclient: connect-timeout: 1000 response-timeout: 5s
ps:这里集成了nacos配置中心想了解详情请移步spring cloud集成nacos配置中心
三、动态路由实现
package com.lc.api.gateway.config; import com.alibaba.fastjson.JSONObject; import com.alibaba.nacos.api.NacosFactory; import com.alibaba.nacos.api.config.ConfigService; import com.alibaba.nacos.api.config.listener.Listener; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.cloud.gateway.event.RefreshRoutesEvent; import org.springframework.cloud.gateway.route.RouteDefinition; import org.springframework.cloud.gateway.route.RouteDefinitionWriter; import org.springframework.context.ApplicationEventPublisher; import org.springframework.context.ApplicationEventPublisherAware; import org.springframework.stereotype.Service; import reactor.core.publisher.Mono; import javax.annotation.PostConstruct; import java.util.ArrayList; import java.util.List; import java.util.Properties; import java.util.concurrent.Executor; /** * 动态路由,可以通过获取Bean才做该类,提供增删改查已经发布功能 * * @Author: lc * @Date: 2020/7/8 15:49 */ @Service public class DynamicRouteConfig implements ApplicationEventPublisherAware { private static final Logger logger = LoggerFactory.getLogger(DynamicRouteConfig.class); @Autowired private RouteDefinitionWriter routedefinitionWriter; private ApplicationEventPublisher publisher; @Value("${spring.cloud.nacos.config.data-id}") private String dataId; @Value("${spring.cloud.nacos.config.group}") private String group; @Value("${spring.cloud.nacos.config.server-addr}") private String serverAddr; @Value("${spring.cloud.nacos.config.namespace}") private String namespace; @Value("${spring.cloud.nacos.config.timeout}") private long timeout; private static final List<String> ROUTE_LIST = new ArrayList<>(); @PostConstruct public void dynamicRouteByNacosListener() { try { Properties prop = new Properties(); prop.put("serverAddr", serverAddr); prop.put("namespace", namespace); ConfigService config = NacosFactory.createConfigService(prop); String content = config.getConfig(dataId, group, timeout); publisher(content); config.addListener(dataId, group, new Listener() { @Override public void receiveConfigInfo(String config) { publisher(config); } @Override public Executor getExecutor() { return null; } }); } catch (Exception e) { e.printStackTrace(); } } /** * 增加路由 * * @param def * @return */ public Boolean addRoute(RouteDefinition def) { try { routedefinitionWriter.save(Mono.just(def)).subscribe(); ROUTE_LIST.add(def.getId()); } catch (Exception e) { e.printStackTrace(); } return true; } /** * 删除路由 * * @return */ public Boolean clearRoute() { for (String id : ROUTE_LIST) { routedefinitionWriter.delete(Mono.just(id)).subscribe(); } ROUTE_LIST.clear(); return Boolean.FALSE; } /** * 发布路由 */ private void publisher(String config) { clearRoute(); try { logger.info("Start updating dynamic routing ...."); List<RouteDefinition> routeDefinitionList = JSONObject.parseArray(config, RouteDefinition.class); for (RouteDefinition route : routeDefinitionList) { logger.info(route.toString()); addRoute(route); } publisher.publishEvent(new RefreshRoutesEvent(this.routedefinitionWriter)); logger.info("update completed "); } catch (Exception e) { logger.error("Failed to update routing information", e); e.printStackTrace(); } } @Override public void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher) { publisher = applicationEventPublisher; } }
四、nacos配置中心设置
1.说明
2.新建一个网关配置
3. 添加配置格式如下
这里我就不注释了大家应该都能看懂
[ { "filters": [ { "args": { "parts": "1" }, "name": "StripPrefix" } ], "id": "authent1", "order": -1, "predicates": [ { "args": { "pattern": "/authent/**" }, "name": "Path" } ], "uri": "lb://lc-authenticate" } ]
五、测试
gateway网关相关配置
创建,使用initilizer,
- Group:com.atguigu.gulimall
- Artifact: gulimall-gateway
- package:com.atguigu.gulimall.gateway
搜索gateway选中。
pom.xml里加上common依赖, 修改jdk版本
在启动类中添加注解@EeableDiscoveryClient
配置nacos注册中心地址
spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848 spring.application.name=gulimall-gateway server.port=88
bootstrap.properties 填写配置中心地址
spring.application.name=gulimall-gateway spring.cloud.nacos.config.server-addr=127.0.0.1:8848 spring.cloud.nacos.config.namespace=ab66aff2-0bd5-4f80-8a68-760d6ff7d96d
nacos里创建命名空间gateway
然后在命名空间里创建文件guilmall-gateway.yml
spring: application: name: gulimall-gateway
在主类中屏蔽数据源
在项目里创建application.yml
spring: cloud: gateway: routes: - id: after_route uri: https://www.xiaomi.com predicates: - Query=url,xiaomi # 若参数等于断言 则跳转到指定的uri
运行结果
以上为个人经验,希望能给大家一个参考,也希望大家多多支持我们。
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