创建服务提供者

由于之前章节已经创建过提供者项目(管理后台实现项目)，在这里我们只需要做少量修改并配置 Dubbo 即可

项目名称

gaming-server-service-admin

POM

<?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.ooqiu.gaming</groupId>
    <artifactId>gaming-server-service-admin</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>gaming-server-service-admin</name>
    <description></description>

    <parent>
        <groupId>com.ooqiu.gaming</groupId>
        <artifactId>gaming-server-dependencies</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <dependencies>
        <!-- Spring Boot Begin -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- Spring Boot End -->

        <!-- Database Begin -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>tk.mybatis</groupId>
            <artifactId>mapper-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!-- Database End -->

        <!-- Alibaba Begin -->
        <dependency>
            <groupId>com.alibaba.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
        </dependency>
        <!-- Alibaba End -->

        <!-- Zookeeper Begin -->
        <dependency>
            <groupId>com.101tec</groupId>
            <artifactId>zkclient</artifactId>
        </dependency>
        <!-- Zookeeper End -->

        <!-- Project Begin -->
        <dependency>
            <groupId>com.ooqiu.gaming</groupId>
            <artifactId>gaming-server-service-admin-api</artifactId>
            <version>1.0.0-SNAPSHOT</version>
        </dependency>

        <dependency>
            <groupId>com.ooqiu.gaming</groupId>
            <artifactId>gaming-server-commons</artifactId>
            <version>1.0.0-SNAPSHOT</version>
        </dependency>
        <!-- Project End -->
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>com.ooqiu.gaming.server.service.admin.GamingServerServiceAdminApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

配置 Dubbo

修改 application.yml 配置文件

dubbo:
  scan:
    base-packages: com.ooqiu.gaming.server.service.admin.api
  application:
    id: gaming-server-service-admin
    name: gaming-server-service-admin
  protocol:
    id: dubbo
    name: dubbo
    port: 20880
  registry:
    id: zookeeper
    address: zookeeper://192.168.75.132:2181?backup=192.168.75.132:2182,192.168.75.132:2183

完整的 application.yml

spring:
  application:
    name: gaming-server-service-admin
  datasource:
    druid:
      url: jdbc:mysql://192.168.75.132:3306/toutiao?useUnicode=true&characterEncoding=utf-8&useSSL=false
      username: root
      password: 123456
      initial-size: 1
      min-idle: 1
      max-active: 20
      test-on-borrow: true
      driver-class-name: com.mysql.jdbc.Driver

dubbo:
  scan:
    base-packages: com.ooqiu.gaming.server.service.admin.api
  application:
    id: gaming-server-service-admin
    name: gaming-server-service-admin
  protocol:
    id: dubbo
    name: dubbo
    port: 20880
  registry:
    id: zookeeper
    address: zookeeper://192.168.75.132:2181?backup=192.168.75.132:2182,192.168.75.132:2183

mybatis:
    type-aliases-package: com.ooqiu.gaming.server.domain
    mapper-locations: classpath:mapper/*.xml

注意： 注册中心使用的是 Zookeeper ，需要指定注册中心地址为 zookeeper://zooIp:zooPort 否则内部报错，然后注册时应用等待超时。原因是没有配置注册中心协议，所以默认就是 dubbo，这样这个地址其实变为了 dubbo://, dubbo 会认为注册中心地址是一个 dubbo 服务，但其实该地址运行的是一个 Zookeeper 服务。

使用 @Service 注解声明服务提供者

package com.ooqiu.gaming.server.service.admin.api.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.ooqiu.gaming.server.domain.Channel;
import com.ooqiu.gaming.server.service.admin.api.ChannelService;
import com.ooqiu.gaming.server.service.admin.mapper.ChannelMapper;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.List;

/**
 * 频道管理
 * <p>Title: ChannelServiceImpl</p>
 * <p>Description: </p>
 *
 * @author Lusifer
 * @version 1.0.0
 * @date 2018/2/5 1:21
 */
@Service(version = "1.0.0")
public class ChannelServiceImpl implements ChannelService {
    @Autowired
    private ChannelMapper channelMapper;

    @Override
    public List<Channel> selectAll() {
        return channelMapper.selectAll();
    }
}

Spring Boot Application 中启动容器

需要在 main() 方法中调用 Main.main(args) 方法启动为提供者容器

package com.ooqiu.gaming.server.service.admin;

import com.alibaba.dubbo.container.Main;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
@MapperScan(basePackages = "com.ooqiu.gaming.server.service.admin.mapper")
public class GamingServerServiceAdminApplication {
    public static void main(String[] args) {
        SpringApplication.run(GamingServerServiceAdminApplication.class, args);
        Main.main(args);
    }
}

运行成功效果图