SpringBoot整合Dubbo简单示例

一.服务提供模块

1.pom.xml依赖

<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/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.example</groupId>
    <artifactId>dubbo-provider</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.7.6</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <dependencies>
        <!-- Spring Boot Starter -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <!-- Dubbo Starter -->
      <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>3.1.0</version>
        </dependency>

        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-registry-zookeeper</artifactId>
            <version>3.1.0</version>
        </dependency>

        <!-- Spring Boot Test Starter -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>com.jyw</groupId>
            <artifactId>dubbo-interface</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

2.提供服务接口

public interface HelloService {
    String sayHello(String name);
}

import com.jyw.service.HelloService;
import org.apache.dubbo.config.annotation.DubboService;

@DubboService// 使用 DubboService 注解暴露服务
public class HelloServiceImpl implements HelloService {

    @Override
    public String sayHello(String name) {
        return name+",你好！";
    }
}

3.启动类

import org.apache.dubbo.config.spring.context.annotation.DubboComponentScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@DubboComponentScan(basePackages = "com.jyw.service")
@SpringBootApplication
public class DubboProviderApplication {
    public static void main(String[] args){
        SpringApplication.run(DubboProviderApplication.class,args);
    }
} 

4.配置文件application.yml

server:
  port: 8081

spring:
  application:
    name: dubbo-provider

dubbo:
  application:
    name: dubbo-provider
  registry:
    address: zookeeper://127.0.0.1:2181  # Zookeeper 注册中心地址
  protocol:
    name: dubbo
    port: 20880  # Dubbo 服务端口

二.服务消费模块

1.pom.xml依赖

<?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/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.jyw</groupId>
    <artifactId>dubbo-web</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.7.6</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <dependencies>
        <!-- Spring Boot Starter -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- Dubbo Starter -->
<dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>3.1.0</version>
        </dependency>

        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-registry-zookeeper</artifactId>
            <version>3.1.0</version>
        </dependency>


        <!-- Spring Boot Test Starter -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>com.jyw</groupId>
            <artifactId>dubbo-interface</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

2.消费服务接口

import com.jyw.service.HelloService;
import org.apache.dubbo.config.annotation.DubboReference;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/user")
public class HelloController {

    @DubboReference// 使用 DubboReference 注解引用远程服务
    // 这里引用的方式是直接在消费服务里面新建一个一模一样的接口，也可以把接口都抽出来放到一个模块中
    HelloService helloService;

    @GetMapping("/sayHello")
    public String sayHello(@RequestParam("name") String name){
        return helloService.sayHello(name);
    }
}`

public interface HelloService {
    String sayHello(String name);
}

3.启动类

import org.apache.dubbo.config.spring.context.annotation.DubboComponentScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@DubboComponentScan(basePackages = "com.jyw.controller")
@SpringBootApplication
public class DubboConsumerApplication {

    public static void main(String[] args){
        SpringApplication.run(DubboConsumerApplication.class,args);
    }
}

4.配置文件application.yml

server:
  port: 8082

spring:
  application:
    name: dubbo-consumer

dubbo:
  application:
    name: dubbo-consumer
  registry:
    address: zookeeper://127.0.0.1:2181  # Zookeeper 注册中心地址

三.访问

http://localhost:8082/user/sayHello?name=xx
返回：“xx”,你好！

注意：消费者和提供者方法路径要一致