據阿里開發團隊宣布,Dubbo Spring Boot Starter 1.0.0 公測版已開發完畢,即將發布至 Maven 公有倉庫,目前正在內部測試中。
Dubbo Spring Boot Starter 致力於簡化 Dubbo 應用在 Spring Boot 環境中的開發,主要包括自動裝配(Auto-Configure)、外部化配置(Externalized-Configuration)以及生產準備(Actuator)等。
版本依賴特別提醒,以下版本依賴尚未發布到 Maven 公有倉庫,請自行 checkout 代碼到本地,並且通過命令 $ ./mvnw clean install 構建:
<dependency> <groupId>com.alibaba.boot</groupId> <artifactId>dubbo-spring-boot-starter</artifactId> <version>1.0.0-SNAPSHOT</version></dependency>同時,dubbo-spring-boot-starter 底層依賴 Dubbo 2.5.9。
快速上手服務接口(RPC)public interface DemoService { String sayHello(String name);}
服務提供者(Provider)實現DemoServer接口提供服務(放置於 com.alibaba.boot.dubbo.demo.provider.service包下):
@Service( version = "1.0.0", application = "${dubbo.application.id}", protocol = "${dubbo.protocol.id}", registry = "${dubbo.registry.id}")public class DefaultDemoService implements DemoService { public String sayHello(String name) { return "Hello, " + name + " (from Spring Boot)"; }}
配置application.properties 以提供外部化配置源:
# Spring boot applicationspring.application.name = dubbo-provider-demoserver.port = 9090management.port = 9091# Dubbo 組件 (如 @Service , @Reference) 掃描路徑,多路徑以","分割dubbo.scan.basePackages = com.alibaba.boot.dubbo.demo.provider.service# Dubbo Config Bean 外部化配置dubbo.application.id = dubbo-provider-demodubbo.application.name = dubbo-provider-demodubbo.protocol.id = dubbodubbo.protocol.name = dubbodubbo.protocol.port = 12345dubbo.registry.id = my-registry
提供服務提供者引導類:
@SpringBootApplicationpublic class DubboProviderDemo { public static void main(String[] args) { SpringApplication.run(DubboProviderDemo.class,args); }}
服務消費者(Consumer)實現服務消費者 Controller (位於com.alibaba.boot.dubbo.demo.consumer.controller包下):
@RestControllerpublic class DemoConsumerController { @Reference(version = "1.0.0", application = "${dubbo.application.id}", url = "dubbo://localhost:12345") private DemoService demoService; @RequestMapping("/sayHello") public String sayHello(@RequestParam String name) { return demoService.sayHello(name); }}
增加外部化配置至application.properties:
# Spring boot applicationspring.application.name = dubbo-consumer-demoserver.port = 8080management.port = 8081# Dubbo Config Bean 外部化配置dubbo.application.id = dubbo-consumer-demodubbo.application.name = dubbo-consumer-demodubbo.protocol.id = dubbodubbo.protocol.name = dubbodubbo.protocol.port = 12345
提供服務消費者引導類:
@SpringBootApplication(scanBasePackages = "com.alibaba.boot.dubbo.demo.consumer.controller")public class DubboConsumerDemo { public static void main(String[] args) { SpringApplication.run(DubboConsumerDemo.class,args); }}