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本文提綱 一、springcloud-eureka-sample 工程結構
├── springcloud-eureka-client-customer
├── springcloud-eureka-client-provider
└── springcloud-eureka-server
二、運行?springcloud-eureka-client-provider 服務提供者工程 1.?git clone 下載工程?springcloud-learning-example
git clone https://github.com/JeffLi1993/ ... e.git
2. Maven 編譯安裝這個工程：
cd springcloud-learning-example
mvn clean install
3. 運行 Eureka 工程 springcloud-eureka-client-provider
2017-07-10 16:03:15.075 INFO 11020 --- [ main] o.s.c.n.e.s.EurekaServiceRegistry : Registering application provider-service with eureka with status UP
2017-07-10 16:03:15.075 INFO 11020 --- [ main] com.netflix.discovery.DiscoveryClient : Saw local status change event StatusChangeEvent [timestamp=1499673795075, current=UP, previous=STARTING]
2017-07-10 16:03:15.079 INFO 11020 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_PROVIDER-SERVICE/10.18.29.31:provider-service:8080: registering service...
2017-07-10 16:03:15.126 INFO 11020 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_PROVIDER-SERVICE/10.18.29.31:provider-service:8080 - registration status: 204
2017-07-10 16:03:15.183 INFO 11020 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2017-07-10 16:03:15.185 INFO 11020 --- [ main] .s.c.n.e.s.EurekaAutoServiceRegistration : Updating port to 8080
2017-07-10 16:03:15.191 INFO 11020 --- [ main] o.s.springcloud.ProviderApplication : Started ProviderApplication in 9.809 seconds (JVM running for 10.981)
4. 訪問?Eureka 注冊中心可視化界面
三、詳解?springcloud-eureka-client-provider 服務提供者工程
├── pom.xml
└── src└── main├── java│ └── org│ └── spring│ ├── springcloud│ │ └── ProviderApplication.java│ └── web│ └── ProviderController.java└── resources└── application.yml
<?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/ma ... gt%3B<modelVersion>4.0.0</modelVersion><groupId>springcloud</groupId><artifactId>springcloud-eureka-client-provider</artifactId><version>0.0.1-SNAPSHOT</version><name>springcloud-eureka-client-provider :: 服務提供者</name><!-- Spring Boot 啟動父依賴 --><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.5.4.RELEASE</version></parent><dependencies><!-- Spring Cloud Netflix Eureka Client 依賴 --><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-eureka</artifactId></dependency><!-- Spring Boot Test 依賴 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies><dependencyManagement><dependencies><!-- Spring Cloud Netflix 依賴 --><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-netflix</artifactId><version>1.3.1.RELEASE</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><configuration><source>1.8</source><target>1.8</target></configuration></plugin></plugins></build>
</project>
3. application.yml 配置
server:port: 8080 # 服務端口
eureka:client:service-url:defaultZone: http://localhost:8888/eureka/ # 服務注冊中心地址
spring:application:name: provider-service # 服務名稱
- server.port 設置工程服務端口4.注冊中心應用啟動類
/*** Spring Boot Eureka Server 應用啟動類** Created by bysocket on 21/06/17.*/
@EnableEurekaClient // Eureka Client 標識
@SpringBootApplication // Spring Boot 應用標識
public class ProviderApplication {public static void main(String args) {// 程序啟動入口// 啟動嵌入式的 Tomcat 并初始化 Spring 環境及其各 Spring 組件SpringApplication.run(ProviderApplication.class,args);}
}
@EnableEurekaClient 標志該應用作為?Eureka Client ，并會自動化讀取 Eureka 相關配置。6.服務提供者 Hello World 案例
/*** Provider HelloWorld 案例* <p>* Created by bysocket on 06/22/17.*/
@RestController
public class ProviderController {private static final Logger LOGGER = LoggerFactory.getLogger(ProviderController.class);@Autowiredprivate Registration registration; // 服務注冊@Autowiredprivate DiscoveryClient discoveryClient; // 服務發現客戶端@RequestMapping("/provider")public String provider() {ServiceInstance instance = serviceInstance();LOGGER.info("provider service, host = " + instance.getHost()+ ", service_id = " + instance.getServiceId());return "Hello,Provider!";}/*** 獲取當前服務的服務實例** @return ServiceInstance*/public ServiceInstance serviceInstance() {List<ServiceInstance> list = discoveryClient.getInstances(registration.getServiceId());if (list != null && list.size() > 0) {return list.get(0);}return null;}
}
可以看到注入了?Registration 和?DiscoveryClient 兩個對象：四、小結
轉載于:https://my.oschina.net/jeffli1993/blog/1305440
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