SpringCloudAlibaba+dubbo+nacos——服务生产和消费

Spring Cloud Alibaba——简介
Spring Cloud Alibaba——nacos搭建
SpringCloudAlibaba+dubbo+nacos——服务生产和消费
SpringCloudAlibaba+zuul+nacos

SpringCloudAlibaba+dubbo+nacos——服务生产和消费

本示例建在不同的java工程
基本结构：
公共接口
生产者
消费者

版本依赖

公共接口服务

创建maven工程，编写接口

package com.dubbo.service;

public interface TestService {
     
    public String getDubbo();
}

打成jar包：api-1.0-SNAPSHOT.jar

放在resources的lib文件夹下，引入生产者和消费者

pom依赖

	<dependency>
			<groupId>dubbo-demo</groupId>
			<artifactId>api</artifactId>
			<version>1.0-SNAPSHOT</version>
			<scope>system</scope>
			<systemPath>${
     project.basedir}/src/main/resources/lib/api-1.0-SNAPSHOT.jar</systemPath>
		</dependency>

生产者服务

pom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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.6.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.dubbo</groupId>
	<artifactId>demo</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>dubbo</name>
	<description>Demo project for Spring Boot</description>
	<properties>
		<java.version>1.8</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-actuator</artifactId>
		</dependency>

		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
			<version>2.1.1.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
			<version>2.1.1.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-dubbo</artifactId>
			<version>2.1.1.RELEASE</version>
		</dependency>
		
		<dependency>
			<groupId>dubbo-demo</groupId>
			<artifactId>api</artifactId>
			<version>1.0-SNAPSHOT</version>
			<scope>system</scope>
			<systemPath>${
     project.basedir}/src/main/resources/lib/api-1.0-SNAPSHOT.jar</systemPath>
		</dependency>
	</dependencies>

	<dependencyManagement>
		<dependencies>
			<!--整合spring cloud-->
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>Greenwich.RELEASE</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>

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

</project>

bootstrap.properties
配置config的时候会首先加载这里的配置
对应的nacos添加的配置文件名
如下：
dubbo-demo-provider-test.properties

spring.application.name=dubbo-demo-provider
spring.profiles.active=test
spring.cloud.nacos.config.server-addr=localhost:8848
spring.cloud.nacos.config.file-extension=properties

application.properties

server.port=7080
spring.application.name=dubbo-demo-provider
spring.cloud.nacos.discovery.server-addr=localhost:8848

dubbo.registry.address=spring-cloud://localhost
dubbo.scan.base-packages=com.dubbo.service

dubbo.protocols.dubbo.name=dubbo
dubbo.protocols.dubbo.port=-1
dubbo.protocols.rest.name=rest
dubbo.protocols.rest.port=8888

接口实现

注意@Service来自dubbo的包
import org.apache.dubbo.config.annotation.Service;

package com.dubbo.service.impl;

import com.dubbo.service.TestService;
import org.apache.dubbo.config.annotation.Service;

@Service
public class TestServiceImpl implements TestService {
     
    @Override
    public String getDubbo(){
     
        return "hello dubbo";
    }
}

启动类加注解

@EnableDiscoveryClient

消费者服务

pom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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.6.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.dubbo.consumer</groupId>
	<artifactId>demo</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>dubbo-consumer</name>
	<description>Demo project for Spring Boot</description>
	<properties>
		<java.version>1.8</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-actuator</artifactId>
		</dependency>

		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
		</dependency>
		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-dubbo</artifactId>
		</dependency>

		<dependency>
			<groupId>dubbo-demo</groupId>
			<artifactId>api</artifactId>
			<version>1.0-SNAPSHOT</version>
			<scope>system</scope>
			<systemPath>${
     project.basedir}/src/main/resources/lib/api-1.0-SNAPSHOT.jar</systemPath>
		</dependency>
	</dependencies>

	<dependencyManagement>
		<dependencies>
			<!--整合spring cloud-->
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>Greenwich.RELEASE</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
			<!--整合spring cloud alibaba-->
			<dependency>
				<groupId>com.alibaba.cloud</groupId>
				<artifactId>spring-cloud-alibaba-dependencies</artifactId>
				<version>2.1.1.RELEASE</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>

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

</project>

application.properties

server.port=7081
spring.application.name=dubbo-demo-consumer
spring.cloud.nacos.discovery.server-addr=localhost:8848

dubbo.registry.address=spring-cloud://localhost
dubbo.registry.subscribe=true
dubbo.cloud.subscribed-services=dubbo-demo-provider

控制层

注意接口引入用注解@Reference

@RestController
public class TestDubboConsume {
     

    @Reference
    private TestService testService;

    @RequestMapping(value = "getDubbo", method = RequestMethod.GET)
    private String getTest(){
     
        return testService.getDubbo();
    }
    
}

启动类

@EnableDiscoveryClient

启动服务

先启动生产者，再启动消费者