Spring boot 集成 Dubbo 快速搭建

架构：

　　1、ZooKeeper：服务注册中心

　　2、api工程：提供对外暴露的服务API

　　3、provider：服务提供者

　　4、consumer：服务消费者

示例如下：

（一）新建 Maven 项目 api

1、  pom.xml

<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.dubbo</groupId>
    <artifactId>api</artifactId>
    <version>1.0.0</version>

    <build>
        <finalName>${project.artifactId}</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>

        </plugins>
    </build>
</project>

2、   TestService.java

package com.dubbo.service;

import java.util.Map;

/**
 * 测试获取主机信息
 *
 * @author Logan
 * @version 1.0.0
 * @createDate 2019-06-23
 *
 */
public interface TestService {

    Map<String, Object> getHostMessage();

}

（二） 新建Maven项目provider

1、 pom.xml

<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.dubbo</groupId>
    <artifactId>provider</artifactId>
    <version>1.0.0</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.5.RELEASE</version>
    </parent>

    <properties>
        <dubbo.version>2.7.1</dubbo.version>
    </properties>

    <dependencies>

        <!-- Spring Boot -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </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>${dubbo.version}</version>
            <type>pom</type>
        </dependency>

        <dependency>
            <groupId>com.dubbo</groupId>
            <artifactId>api</artifactId>
            <version>1.0.0</version>
        </dependency>

    </dependencies>

    <build>
        <finalName>${project.artifactId}</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

2、 ProviderStarter.java

package com.dubbo;

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

/**
 * 服务提供者启动类
 *
 * @author Logan
 * @version 1.0.0
 * @createDate 2019-06-23
 *
 */
@EnableDubbo
@SpringBootApplication
public class ProviderStarter {

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

}

3、  TestServiceImpl.java

package com.dubbo.service.impl;

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.HashMap;
import java.util.Map;

import org.apache.dubbo.config.annotation.Service;

import com.dubbo.service.TestService;

/**
 * 测试服务提供者
 *
 * @author Logan
 * @version 1.0.0
 * @createDate 2019-06-23
 *
 */
@Service
public class TestServiceImpl implements TestService {

    @Override
    public Map<String, Object> getHostMessage() {
        System.out.println("服务提供者被调用");
        Map<String, Object> map = new HashMap<String, Object>();
        try {
            InetAddress host = InetAddress.getLocalHost();
            map.put("hostName", host.getHostName());
            map.put("hostAddress", host.getHostAddress());
        } catch (UnknownHostException e) {
            e.printStackTrace();
            map.put("msg", e.getMessage());
        }
        return map;
    }

}

4、   application.properties

server.port=8880

# Spring boot application
spring.application.name=dubbo-provider

# Base packages to scan Dubbo Component: @org.apache.dubbo.config.annotation.Service
dubbo.scan.base-packages=com.dubbo.service.impl

# Dubbo Application
## The default value of dubbo.application.name is ${spring.application.name}
## dubbo.application.name=${spring.application.name}

# Dubbo Protocol
dubbo.protocol.name=dubbo
dubbo.protocol.port=20880

## Dubbo Registry
dubbo.registry.address=zookeeper://127.0.0.1:2181

（三）新建Maven项目consumer

1、 pom.xml

<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.dubbo</groupId>
    <artifactId>consumer</artifactId>
    <version>1.0.0</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.5.RELEASE</version>
    </parent>

    <properties>
        <dubbo.version>2.7.1</dubbo.version>
    </properties>

    <dependencies>

        <!-- Spring Boot -->
        <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>
            <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>${dubbo.version}</version>
            <type>pom</type>
        </dependency>

        <dependency>
            <groupId>com.dubbo</groupId>
            <artifactId>api</artifactId>
            <version>1.0.0</version>
        </dependency>

    </dependencies>

    <build>
        <finalName>${project.artifactId}</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

2、 ConsumerStarter.java

package com.dubbo;

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

/**
 * 服务消费端启动类
 *
 * @author Logan
 * @version 1.0.0
 * @createDate 2019-06-23
 *
 */
@EnableDubbo
@SpringBootApplication
public class ConsumerStarter {

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

}

3、 ConsumerService.java

package com.dubbo.service;

import java.util.Map;

/**
 * 消费者端的服务
 *
 * @author Logan
 * @version 1.0.0
 * @createDate 2019-06-23
 *
 */
public interface ConsumerService {

    Map<String, Object> getHostMessage();

}

4、 ConsumerServiceImpl.java

package com.dubbo.service.impl;

import java.util.Map;

import org.apache.dubbo.config.annotation.Reference;
import org.apache.dubbo.config.annotation.Service;

import com.dubbo.service.ConsumerService;
import com.dubbo.service.TestService;

/**
 * 消费端的服务
 *
 * @author Logan
 * @version 1.0.0
 * @createDate 2019-06-23
 *
 */
@Service // 使用此注解可暴露服务到注册中心，此处只示例调用外部服务
public class ConsumerServiceImpl implements ConsumerService {

    @Reference
    private TestService testService;

    @Override
    public Map<String, Object> getHostMessage() {
        Map<String, Object> hostMessage = testService.getHostMessage();
        System.out.println(hostMessage);

        hostMessage.put("flag", "消费端的服务");
        return hostMessage;
    }

}

5、 TestController.java

package com.dubbo.controller;

import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import com.dubbo.service.ConsumerService;

/**
 * 测试消费端控制层
 *
 * @author Logan
 * @version 1.0.0
 * @createDate 2019-06-23
 *
 */
@RestController
public class TestController {

    @Autowired
    private ConsumerService service;

    @GetMapping("/getHostMessage")
    public Map<String, Object> getHostMessage() {
        return service.getHostMessage();
    }

}

6、 application.properties

server.port=8888

# Spring boot application
spring.application.name=dubbo-consumer

# Base packages to scan Dubbo Component: @org.apache.dubbo.config.annotation.Service
dubbo.scan.base-packages=com.dubbo.service.impl

# Dubbo Application
## The default value of dubbo.application.name is ${spring.application.name}
## dubbo.application.name=${spring.application.name}

# Dubbo Protocol
dubbo.protocol.name=dubbo
dubbo.protocol.port=20888

## Dubbo Registry
dubbo.registry.address=zookeeper://127.0.0.1:2181

（四） 启动测试

1、启动ZooKeeper服务器

ZooKeeper集群环境搭建可参考：https://www.cnblogs.com/jonban/p/zookeeper.html

练习只启动单机服务器即可

2、启动provider 服务提供者

运行 ProviderStarter.java

3. 启动consumer服务消费者

运行ConsumerStarter.java

4、浏览器输入 http://127.0.0.1:8888/getHostMessage

响应内容如下：{"hostName":"Logan","flag":"消费端的服务","hostAddress":"192.168.1.102"}

截图如下：

观察服务提供者控制台信息，打印内容【服务提供者被调用】，服务提供端和消费端均已正常运行。

.

Spring boot 集成 Dubbo 快速搭建