搭建一个基于springboot的dubbo demo

一、版本信息

　　spring boot：2.2.5.RELEASE

　　jdk：1.8

　　lombok: 1.16.18

　　dubbo: 2.7.1

　　dubbo-dependencies-zookeeper : 2.7.1

二、结构

三、core

1. dubbo-demo（父工程）：

pom.xml

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

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <java.version>1.8</java.version>
        <dubbo.version>2.7.1</dubbo.version>
        <dubbozk.version>2.7.1</dubbozk.version>
        <lombok.version>1.16.18</lombok.version>
        <spring-boot.version>2.2.5.RELEASE</spring-boot.version>
    </properties>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.5.RELEASE</version>
    </parent>

    <dependencies>
        <!-- Springboot依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
            <version>${spring-boot.version}</version>
        </dependency>

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

    </dependencies>

    <dependencyManagement>
        <dependencies>
            <!-- 使用lombok实现JavaBean的get、set、toString、hashCode、equals等方法的自动生成  -->
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>${lombok.version}</version>
                <scope>provided</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

</project>
View Code

2. dubbo-api（API接口）：

pom.xml

<?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>dubbo-demo</artifactId>
        <groupId>com.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>dubbo-api</artifactId>
    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <scope>provided</scope>
        </dependency>
    </dependencies>

</project>
View Code
package com.example.service;

/**
 * @author mdl
 * @date 2020/3/11 16:27
 */
public interface HelloService {

    /**
     * 无返回值情况
     * @param msg
     */
    public void say(String msg);

    /**
     * 有返回值情况
     *
     * @param type
     * @return
     */
    public String eatMenu(Integer type);

}

3. dubbo-provider （提供者）:

pom.xml

<?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>
        <artifactId>dubbo-demo</artifactId>
        <groupId>com.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <artifactId>dubbo-provider</artifactId>

    <dependencies>
        <dependency>
            <artifactId>dubbo-api</artifactId>
            <groupId>com.example</groupId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

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

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </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</artifactId>
            <version>${dubbo.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-dependencies-zookeeper</artifactId>
            <version>${dubbozk.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-log4j12</artifactId>
                </exclusion>
            </exclusions>
            <type>pom</type>
        </dependency>

    </dependencies>

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

</project>

application.yml:

server:
  port: 8081


dubbo:
  application:
    name: dubbo-provider-demo
  registry:
    protocol: zookeeper
    address: 127.0.0.1:2181
  protocol:
    name: dubbo
    port: 20887
  version: 1.0.0
  scan:
    base-packages: com.example.service.impl

启动类：

package com.example;

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

import java.io.IOException;

@SpringBootApplication
@EnableDubbo
public class DubboProviderApplication {

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

}

demo service impl

package com.example.service.impl;

import com.example.service.HelloService;
import lombok.extern.slf4j.Slf4j;
import org.apache.dubbo.config.annotation.Service;

/**
 * @author mdl
 * @date 2020/3/11 16:46
 */
@Service(version = "${dubbo.version}")
@Slf4j
public class HelloServiceImpl implements HelloService {
    @Override
    public void say(String msg) {
        log.info("服务端打印..." + msg);
    }

    @Override
    public String eatMenu(Integer type) {
        String menu = "";
        switch (type) {
            case 1:
                menu = type + ": 米粥";
                break;
            case 2:
                menu = type + ": 鱼，米饭";
                break;
            case 3:
                menu = type + ": 鸡蛋面";
                break;
        }
        return menu;
    }
}

4. dubbo-consumer（消费者）：

pom.xml:

<?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>
        <artifactId>dubbo-demo</artifactId>
        <groupId>com.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <artifactId>dubbo-consumer</artifactId>
    <name>dubbo-consumer</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <artifactId>dubbo-api</artifactId>
            <groupId>com.example</groupId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

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

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo</artifactId>
            <version>${dubbo.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-dependencies-zookeeper</artifactId>
            <version>${dubbozk.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-log4j12</artifactId>
                </exclusion>
            </exclusions>
            <type>pom</type>
        </dependency>

    </dependencies>

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

</project>

application.yml:

server:
  port: 8090
  context-path: /
dubbo:
  application:
    name: dubbo-consumer-demo
  registry:
    address: 127.0.0.1:2181
    protocol: zookeeper
  monitor:
    protocol: registry
  version: 1.0.0

启动类：

package com.example;

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

@SpringBootApplication
@EnableDubbo
public class DubboConsumerApplication {

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

}

controller：

package com.example.controller;

import com.example.service.HelloService;
import org.apache.dubbo.config.annotation.Reference;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author mdl
 * @date 2020/3/12 14:45
 */
@RestController
@RequestMapping("/")
public class TestController {

    @Reference(version = "${dubbo.version}")
    private HelloService helloService;

    @RequestMapping("say/{msg}")
    public void say(@PathVariable String msg){
        helloService.say(msg);
    }

    @RequestMapping("eatMenu/{type}")
    public String eatMenu(@PathVariable Integer type){
        return helloService.eatMenu(type);
    }



}

 四、测试

分别访问：

http://localhost:8090/eatMenu/3

http://localhost:8090/say/hello

每一步脚印都要扎得深一点！
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原文地址：https://www.cnblogs.com/bloodthirsty/p/12469735.html