Springboot服务HTTP/HTTPS双监听及路由的实现示例
目录
- 背景
- 1. SpringBoot Http/Https监听双支持
- 1.1 代码实现
- 1.2 配置
- 2. SpringCloud Gateway Http/Https路由双支持
- 2.1 代码实现
- 2.2 配置
- 结束语
背景
一般来说SpringCloud Gateway到后面服务的路由属于内网交互,因此路由方式是否是Https就显得不是那么重要了。事实上也确实如此,大多数的应用开发时基本都是直接Http就过去了,不会一开始就是直接上Https。然而随着时间的推移,项目规模的不断扩大,当被要求一定要走Https时,就会面临一种困惑:将所有服务用一刀切的方式改为Https方式监听,同时还要将网关服务所有的路由方式也全部切为Https方式,一旦生产环境上线出问题将要面临全量服务的归滚,这时运维很可能跳出来说:生产环境几十个服务,每个服务最少2个节点,全量部署和回滚不可能在短时间完成。另外测试同学也可能会说,现在没有全量接口自动化回归测试工具,做一个次人工的全量接口回归测试也不现实。因此在这种情况下最稳妥的方式是实现:SpringCloud Gateway & SpringBoot RestController Http/Https双支持,这样可以做到分批分次进行切换,那么上面的困惑自然也就不存在了。
1. SpringBoot Http/Https监听双支持
1.1 代码实现
为了不对原来的Http监听产生任何影响,因此需要保障以下两点:
1、原主端口(server.port)监听什么都不变,监听方式仍为http,附加端口监听方式为https。(需要绕开的问题是:如果一个服务有多个监听端口,主端口会优先选择https方式)2、附加端口不进行nacos服务注册(主要的考虑点还是不对原来的http监听和路由产生任何影响,这里我的方案是https监听端口号为http端口+10000)。这样就能实现SpringBoot服务主端口Http监听,附加端口Https监听。
实现代码如下:
import org.apache.catalina.connector.Connector; import org.apache.coyote.http11.Http11NioProtocol; import org.springframework.beans.factory.annotation.Value; import or编程g.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory; import org.springframework.boot.web.server.WebServerFactoryCustomizer; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; /** * HttpsConnectorAddInConfiguration * * @author chenx */ @Configuration public class HttpsConnectorAddInConfiguration { private static final int HTTPS_PORT_OFFSET = 10000; @Value("${server.port}") private int port; @Value("${additional-https-connector.ssl.key-store:XXX.p12}") private String keyStore; @Value("${additional-https-connector.ssl.key-store-password:XXX}") private String keyStorePassword; @Value("${additional-https-connector.ssl.key-store-type:PKCS12}") private String keyStoreType; @Value("${additional-https-connector.ssl.enabled:false}") private boolean enabled; @Bean public WebServerFactoryCustomizer<TomcatServletWebServerFactory> servletContainer() { return server -> { if (!this.enabled) { return; } Connector httpsConnector = this.createHttpsConnector(); server.addAdditionalTomcatConnectors(httpsConnector); }; } /** * createHttpsConnector * * @return */ private Connector createHttpsConnector() { Connector connector = new Connector(TomcatServletWebServ编程客栈erFactory.DEFAULT_PROTOCOL); connector.setScheme("https"); connector.setPort(this.port + HTTPS_PORT_OFFSET); connector.setSecure(true); Http11NioProtocol protocol = (Http11NioProtocol) connector.getProtocolHandler(); protocol.setSSLEnabled(true); protocol.setKeystoreFile(this.keyStore); protocol.setKeystorePass(this.keyStorePassword); protocol.setKeystoreType(this.keyStoreType); protocol.setSslProtocol("TLS"); return connector; } }
备注:
1、上述代码中的配置http://www.devze.com默认值大家自行修改(key-store:XXX.p12,key-store-password:XXX),如果觉得配置ad编程ditional-https-connector相关配置命名不合适也可自行修改。当配置好additional-https-connector相关配置(additional-https-connector.ssl.enabled是一个https附加端口监听的开关),启动服务就可以看到类似如下的日志,同时查看nacos中的服务实例也会发现并没有进行https端口的服务注册;2、这里我用的是p12自签证书,证书需要放到项目的resouces目录下(可以用keytool -genkey命令去生成一个)。1.2 配置
配置示例如下,keyStore、keyStorePassword、keyStoreType使用代码中的默认值,需要更换证书的时候再进行配置。
server: port: 9021 tomcat: min-spare-threads: 400 max-threads: 800 additional-https-connector: ssl: enabled: true
2. SpringCloud Gateway Http/Https路由双支持
思路:在网关服务增加自定义配置(HttpsServiceConfig)来定义需要切换为https路由的服务列表,然后使用过滤器(HttpsLoadBalancerFilter)进行转发uri的https重写;
这样就能实现在配置列表中的服务进行Https路由,否则保持原有Https路由。
2.1 代码实现
- HttpsServiceConfig
import lombok.extern.slf4j.Slf4j; import org.apache.commons.collections.CollectionUtils; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.cloud.context.config.annotation.RefreshScope; import org.springframework.cloud.endpoint.event.RefreshEvent; import org.springframework.context.event.EventListener; import org.springframework.stereotype.Component; import Java.util.HashSet; import java.util.List; import java.util.Set; /** * HttpsServiceConfig * * @author chenx */ @Slf4j @Component @RefreshScope @ConfigurationProperties(prefix = "bw.gateway") public class HttpsServiceConfig { private List<String> httpsServices; private Set<String> httpsServiceSet = new HashSet<>(); public List<String> getHttpsServices() { return this.httpsServices; } public void setHttpsServices(List<String> httpsServices) { this.httpsServices = httpsServices; this.updateHttpsServices(); } public Set<String> getHttpsServiceSet() { return this.httpsServiceSet; } /** * handleRefreshEvent */ @EventListener(RefreshEvent.class) public void handleRefreshEvent() { this.updateHttpsServices(); } /** * updateHttpsServices */ private void updateHttpsServices() { this.httpsServiceSet = CollectionUtils.isNotEmpty(this.httpsServices) ? new HashSet<>(this.httpsServices) : new HashSet<>(); log.info("httpsServiceSet updated, httpsServiceSet.size() = {}", this.httpsServiceSet.size()); } }
- HttpsLoadBalancerFilter
import com.beam.work.gateway.common.FilterEnum; import com.beam.work.gateway.config.HttpsServiceConfig; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.cloud.client.ServiceInstance; import org.springframework.cloud.client.loadbalancer.LoadBalancerClient; import org.springframework.cloud.context.config.annotation.RefreshScope; import org.springframework.cloud.gateway.filter.GatewayFilterChain; import org.springframework.cloud.gateway.filter.GlobalFilter; import org.springframework.cloud.gateway.route.Route; import org.springframework.cloud.gateway.support.ServerWebExchangeUtils; import org.springframework.core.Ordered; import org.springframework.stereotype.Component; import org.springframework.web.server.ServerWebExchange; import org.springframework.web.util.UriComponentsBuilder; import reactor.core.publisher.Mono; iphpmport java.net.URI; import java.util.Objects; /** * HttpsLoadBalancerFilter * * @author chenx */ @Slf4j @RefreshScope @Component public class HttpsLoadBalancerFilter implements GlobalFilter, Ordered { private static final int HTTPS_PORT_OFFSET = 10000; private final LoadBalancerClient loadBalancer; @Autowired private HttpsServiceConfig httpsServiceConfig; public HttpsLoadBalancerFilter(LoadBalancerClient loadBalancer) { this.loadBalancer = loadBalancer; } @Override public int getOrder() { return FilterEnum.HTTPS_LOAD_BALANCER_FILTER.getCode(); } @Override public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) { Route route = exchange.getAttribute(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR); boolean isRewriteToHttps = Objects.nonNull(route) && this.httpsServiceConfig.getHttpsServiceSet().contains(route.getId()); if (isRewriteToHttps) { ServiceInstance instance = this.loadBalancer.choose(route.getUri().getHost()); if (Objects.nonNull(instance)) { URI originalUri = exchange.getRequest().getURI(); URI httpsUri = UriComponentsBuilder.fromUri(originalUri) .scheme("https") .host(instance.getHost()) .port(instance.getPort() + HTTPS_PORT_OFFSET) .build(true) .toUri(); log.info("HttpsLoadBalancerFilter RewriteToHttps: {}", httpsUri.toString()); exchange.getAttributes().put(ServerWebExchangeUtils.GATEWAY_REQUEST_URL_ATTR, httpsUri); } } return chain.filter(exchange); } }
备注:
1、这里实现了配置的刷新,因此需要进行服务的https路由切换时只需修改配置即可,而网关服务不需要重启;2、过滤器使用Set进行判断,效率上肯定优于对List的遍历查找;3、过滤器的Order建议放到最后,因此可以直接使用Integer.MAX_VALUE(我们的项目中有多个过滤器,并且通过FilterEnum枚举去统一管理);2.2 配置
配置示例:
spring: cloud: gateway: enabled: true httpclient: ssl: use-insecure-trust-manager: true connect-timeout: 10000 response-timeout: 120000 pool: max-idle-time: 15000 max-life-time: 45000 evictionInterval: 5000 routes: - id: bw-star-favorite uri: lb://bw-star-favorite order: -1 predicates: - Path=/star-favoritear/v1/** bw: gateway: xssRequestFilterEnable: false xssResponseFilterEnable: false httpsServices: - bw-star-favorite
备注:
1、需要变更的配置为:- 开启ssl信任(spring.cloud.gateway.httpclient.ssl):
- 设置https路由服务列表(bw.gateway.httpsServices)
结束语
通过上述两步就能实现SpringCloud Gateway & SpringBoot RestController Http/Https双支持,严谨的做法是还需要将FeignClient的调用进行Https化,上面的实现方式中之所以不对https端口进行注册的原因就是避免Http方式的FeignClient去调用Https目标端口从而引发问题。关于FeignClient的Https切换实际上也可以借鉴网关的思路将请求uri重写为端口号+10000的https请求即可。
那么通过这个思路就可以实现:服务的分批、FeignClient分步Https路由切换,从而保障整个割接风险可控和平滑。
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