Spring Boot 整合 Dubbo3 + Nacos 2.4.0

准备工作：Nacos

一、前置工作

安装Nacos，参考：Nacos 快速开始

此次安装 Nacos 最新版本：2.4.0 单机版

安装教程：Linux 安装 nacos 2.4.0-CSDN博客

二、创建配置文件

创建命名空间

新增配置文件

properties 复制代码

dubbo:
  application:
    id: tyron-dubbo3-consumer
    name: tyron-dubbo3-consumer
    serialize-check-status: WARN
  registry:
    address: nacos://${nacos.config.server-addr}
    parameters.namespace: ${nacos.config.namespace}

properties 复制代码

server:
  port: 5656

dubbo:
  application:
    id: tyron-dubbo3-provider
    name: tyron-dubbo3-provider
    serialize-check-status: WARN
  protocol:
    id: dubbo
    name: dubbo
    host: 127.0.0.1
    port: 7788
    serialization: hessian2
  registry:
    address: nacos://${nacos.config.server-addr}
    parameters.namespace: ${nacos.config.namespace}

dubboParams: tyron

三、搭建项目

3.1、父 pom

properties 复制代码

<?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.tyron</groupId>
    <artifactId>dubbo3-demo</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>dubbo3-provider</module>
        <module>dubbo3-consumer</module>
        <module>dubbo3-api</module>
    </modules>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
        <java.version>1.8</java.version>

        <spring.boot.version>2.7.17</spring.boot.version>
        <nacos.boot.version>0.2.12</nacos.boot.version>
        <dubbo.version>3.2.9</dubbo.version>
    </properties>
</project>

3.2、dubbo3-provider 服务提供者

pom.xml 文件，定义依赖

properties 复制代码

<?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">
    <parent>
        <artifactId>dubbo3-demo</artifactId>
        <groupId>com.tyron</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>dubbo3-provider</artifactId>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-parent</artifactId>
                <version>${spring.boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

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

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

        <!--nacos配置中心依赖-->
        <dependency>
            <groupId>com.alibaba.boot</groupId>
            <artifactId>nacos-config-spring-boot-starter</artifactId>
            <version>${nacos.boot.version}</version>
        </dependency>

        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>${dubbo.version}</version>
            <exclusions>
                <exclusion>
                    <artifactId>javassist</artifactId>
                    <groupId>org.javassist</groupId>
                </exclusion>
            </exclusions>
        </dependency>

        <!-- dubbo整合nacos -->
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-registry-nacos</artifactId>
            <version>${dubbo.version}</version>
        </dependency>

        <!-- 自定义api -->
        <dependency>
            <groupId>com.tyron</groupId>
            <artifactId>dubbo3-api</artifactId>
            <version>1.0-SNAPSHOT</version>
            <scope>compile</scope>
        </dependency>
    </dependencies>
</project>

配置文件 application.yaml ：nacos的配置文件

properties 复制代码

nacos:
  config:
    # 指定命名空间
    namespace: tyron-dubbo
    #配置服务地址
    server-addr: 192.168.1.8:8848
    #data-ids 为新增加的data-id
    data-ids: dubbo3-provider
    #配置类型
    type: yaml
    #是否启动刷新配置
    autoRefresh: true
    #运行时启用
    bootstrap:
      enable: true

定义接口实现，通过@NacosValue 读取nacos的配置文件数据

java 复制代码

package com.tyron.service.impl;

import com.alibaba.nacos.api.config.annotation.NacosValue;
import com.tyron.dubbo3.api.DemoService;
import org.apache.dubbo.config.annotation.DubboService;


@DubboService(version = "1.0.0")
public class DemoServiceImpl implements DemoService {

    @NacosValue(value = "${dubboParams}", autoRefreshed = true)
    private String dubboParams;

    @Override
    public String getString() {
        return dubboParams;
    }
}

3.3、dubbo3-api 接口模块

dubbo 提供和调用本地方法一样的体验，所以需要提供api包

java 复制代码

package com.tyron.dubbo3.api;

public interface DemoService {

    String getString();
}

3.4、dubbo3-consumer 消费者

pom.xml 文件，定义依赖

同 dubbo3-provider 的定义：dubbo3-consumer/pom.xml

配置文件

properties 复制代码

nacos:
  config:
    # 指定命名空间
    namespace: tyron-dubbo
    #配置服务地址
    server-addr: 192.168.1.8:8848
    #data-ids 为新增加的data-id
    data-id: dubbo3-consumer
    #配置类型
    type: yaml
    #是否启动刷新配置，开启之后可适应
    autoRefresh: true
    #运行时启用
    bootstrap:
      enable: true

消费者，调用api接口

java 复制代码

package com.tyron.consumer;

import com.tyron.dubbo3.api.DemoService;
import org.apache.dubbo.config.annotation.DubboReference;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class DemoConsumer {

    @DubboReference(version = "1.0.0", timeout = 1000)
    private DemoService demoService;

    @GetMapping("/tyron-test")
    public String tyronTest() {
        return demoService.getString();
    }
}

四、项目启动

启动dubbo3-provider

启动dubbo3-consumer

本地接口调用，返回nacos配置的值。

参考

Dubbo 融合 Nacos 成为注册中心
 2 - Dubbo Spring Boot Starter 开发微服务应用