springboot+dubbo+nacos非常详细的整合过程

java后端指南

发布于 2021-06-22 18:42:29

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发布于 2021-06-22 18:42:29

文章被收录于专栏：java后端java后端

Part1文章首推

Part2今日主题:springboot+dubbo+nacos非常详细的整合过程

1简介

nacos是阿里巴巴的一个服务注册中心，相比于zookeeper来说，他的优势非常大，nacos几乎可以成为所有的微服务注册中心，今天来讲一下如何搭建一个demo的，我这个是基于dubbo搭建的。

2环境

springboot

3实现过程

1.创建一个一个maven项目

2.删掉这个maven工程的src目录，在这个工程的pom中加入：

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
      <maven.compiler.source>8</maven.compiler.source>
      <maven.compiler.target>8</maven.compiler.target>
      <netty.version>4.1.56.Final</netty.version>
      <spring-boot.version>2.3.5.RELEASE</spring-boot.version>
      <dubbo.version>2.7.8</dubbo.version>
      <nacos-client.version>1.4.0</nacos-client.version>
  </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring-boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.apache.dubbo</groupId>
                <artifactId>dubbo-dependencies-bom</artifactId>
                <version>${dubbo.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.apache.dubbo</groupId>
                <artifactId>dubbo-spring-boot-starter</artifactId>
                <version>${dubbo.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.dubbo</groupId>
                <artifactId>dubbo-registry-nacos</artifactId>
                <version>${dubbo.version}</version>
            </dependency>
            <dependency>
                <groupId>com.alibaba.nacos</groupId>
                <artifactId>nacos-client</artifactId>
                <version>${nacos-client.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.dubbo</groupId>
                <artifactId>dubbo</artifactId>
                <version>${dubbo.version}</version>
                <exclusions>
                    <exclusion>
                        <groupId>org.springframework</groupId>
                        <artifactId>spring</artifactId>
                    </exclusion>
                    <exclusion>
                        <groupId>javax.servlet</groupId>
                        <artifactId>servlet-api</artifactId>
                    </exclusion>
                    <exclusion>
                        <groupId>log4j</groupId>
                        <artifactId>log4j</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

3.目录结构

4.创建好对应的模块

common-api:

pom.xml:

<parent>
        <artifactId>springboot_dubbo_nacos_demo</artifactId>
        <groupId>com.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>

创建SayService:

public interface SayService {
    /**
     * 根据名字say hello
     * @param name 名字
     * @return name + hello
     */
    String sayHelloByName(String name);
}

dubbo-provider:

pom.xml:

<parent>
        <groupId>com.example</groupId>
        <artifactId>springboot_dubbo_nacos_demo</artifactId>
        <version>1.0-SNAPSHOT</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>dubbo-provide</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>dubbo-provide</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-registry-nacos</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.nacos</groupId>
            <artifactId>nacos-client</artifactId>
        </dependency>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>common-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

SayServiceImpl.java:

/**
 * @DubboService是新版Dubbo的注解，如果是旧版比如2.7.3，使用的是org.apache.dubbo.config.annotation.Service这个注解
 */
@DubboService
public class SayServiceImpl implements SayService {
    @Override
    public String sayHelloByName(String name) {
        return name+",hello!";
    }
}

启动类上加上@EnableDubbo注解

application.yml:

server:
  port: 14511
spring:
  application:
    name: provider-service
  main:
    allow-bean-definition-overriding: true
dubbo:
  application:
    name: provider-service
  registry:
    address: nacos://127.0.0.1:8848
    username: nacos
    password: nacos
  scan:
    base-packages: com.example.service.impl
  protocol:
    name: dubbo
    port: 15511

dubbo-consumer

pom.xml:

    <parent>
        <groupId>com.example</groupId>
        <artifactId>springboot_dubbo_nacos_demo</artifactId>
        <version>1.0-SNAPSHOT</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>service-consumer</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>service-consumer</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-registry-nacos</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.nacos</groupId>
            <artifactId>nacos-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>common-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

application.yml:

server:
  port: 14512
spring:
  application:
    name: consumer-service
  main:
    allow-bean-definition-overriding: true
dubbo:
  application:
    name: consumer-service
  registry:
    address: nacos://127.0.0.1:8848
    username: nacos
    password: nacos
  protocol:
    name: dubbo
    port: 15511

SayController.java:

@RestController
@RequestMapping("/demo/say")
public class SayController {

    @DubboReference
    private SayService sayService;

    @GetMapping("/sayHello")
    public ResponseEntity<String> sayHello(@RequestParam("name") String name) {
        return ResponseEntity.ok(sayService.sayHelloByName(name));
    }
}

启动类上也要加上@EnableDubbo

5.记得把nacos打开，然后依次启动provider，consumer模块，访问http://localhost:8848/,账号密码都是nacos

服务列表可以看到两个服务