Dubbo Spring Boot Project

Dubbo Spring Boot Project makes it easy to create Spring Boot application using Dubbo as RPC Framework. What's more , it aslo provides

auto-configure features (e.g.annotation-driven, auto configuration, externalized configuration).
production-ready features (e.g.security, health checks, externalized configuration).

Dubbo |ˈdʌbəʊ| is a high-performance, java based RPC framework open-sourced by Alibaba. As in many RPC systems, dubbo is based around the idea of defining a service, specifying the methods that can be called remotely with their parameters and return types. On the server side, the server implements this interface and runs a dubbo server to handle client calls. On the client side, the client has a stub that provides the same methods as the server.

Integrate with Maven

You can introduce the latest dubbo-spring-boot-starter to your project by adding the following dependency to your pom.xml

<dependency>
    <groupId>com.alibaba.boot</groupId>
    <artifactId>dubbo-spring-boot-starter</artifactId>
    <version>1.0.0-SNAPSHOT</version>
</dependency>

If your project failed to resolve the dependency, try to add the following repository:

<repositories>
    <repository>
        <id>sonatype-nexus-snapshots</id>
        <url>https://oss.sonatype.org/content/repositories/snapshots</url>
        <releases>
            <enabled>false</enabled>
        </releases>
        <snapshots>
            <enabled>true</enabled>
        </snapshots>
    </repository>
</repositories>

Getting Started

If you don't know about Dubbo , please take a few minutes to learn http://dubbo.io/ . After that you could dive deep into dubbo user guide.

Usually , There are two usage scenarios for Dubbo applications , one is Dubbo service(s) provider , another is Dubbo service(s) consumer, thus let's get a quick start on them.

First of all , we suppose an interface as Dubbo RPC API that a service provider exports and a service client consumes :

public interface DemoService {

    String sayHello(String name);

}

Dubbo service(s) provider

Service Provider implements DemoService :

@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)";
    }

}

then , provides a bootstrap class :

@SpringBootApplication
public class DubboProviderDemo {

    public static void main(String[] args) {

        SpringApplication.run(DubboProviderDemo.class,args);

    }

}

last , configures application.properties :

# Spring boot application
spring.application.name = dubbo-provider-demo
server.port = 9090
management.port = 9091

# Base packages to scan Dubbo Components (e.g @Service , @Reference)
dubbo.scan.basePackages  = com.alibaba.boot.dubbo.demo.provider.service

# Dubbo Config properties
## ApplicationConfig Bean
dubbo.application.id = dubbo-provider-demo
dubbo.application.name = dubbo-provider-demo

## ProtocolConfig Bean
dubbo.protocol.id = dubbo
dubbo.protocol.name = dubbo
dubbo.protocol.port = 12345

## RegistryConfig Bean
dubbo.registry.id = my-registry
dubbo.registry.address = N/A

DefaultDemoService's placeholders( ${dubbo.application.id}, ${dubbo.protocol.id}, ${dubbo.registry.id} ) sources from application.properties.

More details , please refer to Dubbo Provider Sample.

Dubbo service(s) consumer

Service consumer requires Spring Beans to reference DemoService :

@RestController
public 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);
    }

}

then , also provide a bootstrap class :

@SpringBootApplication(scanBasePackages = "com.alibaba.boot.dubbo.demo.consumer.controller")
public class DubboConsumerDemo {

    public static void main(String[] args) {

        SpringApplication.run(DubboConsumerDemo.class,args);

    }

}

last , configures application.properties :

# Spring boot application
spring.application.name = dubbo-consumer-demo
server.port = 8080
management.port = 8081


# Dubbo Config properties
## ApplicationConfig Bean
dubbo.application.id = dubbo-consumer-demo
dubbo.application.name = dubbo-consumer-demo

## ProtocolConfig Bean
dubbo.protocol.id = dubbo
dubbo.protocol.name = dubbo
dubbo.protocol.port = 12345

If DubboProviderDemo works well , please mark sure Dubbo service(s) is active.

More details , please refer to Dubbo Consumer Sample

Getting help

Having trouble with Dubbo Spring Boot? We’d like to help!

If you are upgrading, read the release notes for upgrade instructions and "new and noteworthy" features.
Ask a question - You can join ours google groups , or subscribe Dubbo User Mailling List.
Report bugs at github.com/dubbo/dubbo-spring-boot-project/issues.

Building from Source

If you want to try out thr latest features of Dubbo Spring Boot , it can be easily built with the maven wrapper. Your JDK is 1.7 or above.

$ ./mvnw clean install

Modules

There are some modules in Dubbo Spring Boot Project , let's take a look at below overview :

Demo Controller : http://localhost:8080/sayHello?name=HelloWorld
Health Checks : http://localhost:8081/health
Dubbo Endpoint : http://localhost:8081/dubbo

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