发布时间:2024-07-06 12:01
@EnableDiscoveryClient
@EnableFeignClients
public class SpringRestConsumerBootstrap {
public static void main(String[] args) {
SpringApplication.run(SpringRestConsumerBootstrap.class, args);
}
}
总结:通过上面的学习,我们已经了解Spring cloud的微服务是如何协作的,通过哪些组件的配合能够完成服务间协作?我们了解了什么是负载均衡,Feign用于服务间Http调用,Ribbon用于执行负载均衡算法选取访问实例,而Ribbon的实例列表来源是由Spring cloud的服务发现中心提供(当前实现为Nacos),更详细的内容请学习Spring Cloud的相关课程 。
[](()1.2、搭建Nacos服务端
做nacos服务端的下载及安装操作。
[](()1.3、创建父工程
为了规范依赖的版本,这里创建父工程,指定依赖的版本。
父工程pom.xml如下:
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”> 4.0.0 com.demo.nacos nacos-discovery 1.0-SNAPSHOT pom com.alibaba.cloud spring-cloud-alibaba-dependencies 2.1.0.RELEASE pom import org.springframework.cloud spring-cloud-dependencies Greenwich.RELEASE pom import org.springframework.boot spring-boot-dependencies 2.1.3.RELEASE pom import org.springframework.boot spring-boot-maven-plugin [](()1.4、服务生产者 以下步骤演示了如何将一个服务生产者注册到 Nacos。 包括Spring Cloud Feign组件、Spring Cloud Alibaba Nacos Discovery组件以及Spring boot web相关组件依赖。 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”> nacos-discovery com.demo.nacos 1.0-SNAPSHOT 4.0.0 quickstart-provider com.alibaba.cloud spring-cloud-starter-alibaba-nacos-discovery org.springframework.boot spring-boot-starter-web org.springframework.cloud spring-cloud-starter-openfeign 配置,如下所示: application.yml server: port: 56010 # 启动端口 spring: application: name: quickstart-provider cloud: nacos: discovery: server-addr: 127.0.0.1:8848 logging: level: root: info org.springframework: info Note: spring.cloud.nacos.discovery.server-addr 指定了Nacos Server的网络地址和端口号。 package com.demo.nacos; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.client.discovery.EnableDiscoveryClient; import org.springframework.cloud.openfeign.EnableFeignClients; /** Description: DATE: 2022/1/26 17:14 */ @SpringBootApplication @EnableDiscoveryClient @EnableFeignClients public class NacosProviderApp { public static void main(String[] args) { SpringApplication.run(NacosProviderApp.class,args); } } package com.demo.nacos.controller; import org.slf4j.LoggerFactory; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; import java.util.logging.Logger; /** Description: DATE: 2022/1/26 17:15 */ @RestController public class ProviderController { private static final Logger LOG = (Logger) LoggerFactory.getLogger(ProviderController.class); @GetMapping(“/servicre”) public String service(){ 《大厂前端面试题解析+Web核心总结学习笔记+企业项目实战源码+最新高清讲解视频》无偿开源 徽信搜索公众号【编程进阶路】 LOG.info(“provider invoke”); return “provider invoke”; } } [](()1.5、服务消费者 1、pom.xml的配置。 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”> nacos-discovery com.demo.nacos 1.0-SNAPSHOT 4.0.0 quickstart-consumer com.alibaba.cloud spring-cloud-starter-alibaba-nacos-discovery org.springframework.boot spring-boot-starter-web org.springframework.cloud spring-cloud-starter-openfeign 2、application.yml配置 server: port: 56020 # 启动端口 spring: application: name: quickstart-consumer cloud: nacos: discovery: server-addr: 127.0.0.1:8848 logging: level: root: info org.springframework: info 3、Consumer(消费者)启动类 package com.demo.nacos; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.client.discovery.EnableDiscoveryClient; import org.springframework.cloud.openfeign.EnableFeignClients; /** Description: DATE: 2022/1/26 17:42 */ @SpringBootApplication @EnableDiscoveryClient @EnableFeignClients public class NacosConsumerApp { public static void main(String[] args) { SpringApplication.run(NacosConsumerApp.class, args); } } 4、Provider(生产者)远程代理定义 package com.demo.nacos.client; import org.springframework.cloud.openfeign.FeignClient; import org.springframework.web.bind.annotation.GetMapping; /** Description: DATE: 2022/1/26 17:36 */ @FeignClient(value = “quickstart-provider”)