一、接口工程

1.1、创建maven Java工程

1.2、添加实体类和服务接口

• 实体类

@Data
public class Student implements Serializable {
    private Integer id;
    private String name;
    private String sex;
    private Integer age;
}

• 服务接口

public interface StudentService {
	//通过id查询学生
    Student queryStudent(Integer id);
}

二、服务提供者

2.1、创建springboot工程

2.2、添加相关依赖

添加dubbo、注册中心、接口工程依赖

 <!--接口工程-->
<dependency>
	<groupId>com.why</groupId>
	<artifactId>ch04-springboot-dubbo-interface</artifactId>
	<version>1.0-SNAPSHOT</version>
</dependency>
<!--Dubbo依赖-->
<dependency>
	<groupId>com.alibaba.spring.boot</groupId>
	<artifactId>dubbo-spring-boot-starter</artifactId>
	<version>2.0.0</version>
</dependency>
<!--注册中心依赖-->
<dependency>
	<groupId>com.101tec</groupId>
	<artifactId>zkclient</artifactId>
	<version>0.10</version>
</dependency>

2.3、配置springboot核心配置文件

在application.properties文件中编写

#内嵌tomcat配置
server.port=8081
server.servlet.context-path=/

#dubbo配置
#服务提供者名称
spring.application.name=ch04-dubbo-provide
#声明当前工程是服务提供者
spring.dubbo.server=true
#注册中心 默认端口号2181
spring.dubbo.registry=zookeeper://192.168.140.129:2181

2.4、编写接口实现类

//把接口的实现类（服务）交给springboot容器管理
@Component 
//@Service选择alibaba提供的那个 interfaceName接口的全限定名 也可以使用interfaceClass
//@Service(interfaceClass = StudentService.class,version = "1.0.0",timeout = 15000) 
//暴露接口服务
@Service(interfaceName = "com.why.service.StudentService",version = "1.0.0",timeout = 15000)
public class StudentServiceImpl implements StudentService {
    @Override
    public Student queryStudent(Integer id) {
        //这里只是通过创建对象来模拟dao层访问数据库返回的结果
        //偷个小懒
        Student student = new Student();
        student.setName("张三");
        student.setSex("男");
        student.setAge(21);
        return student;
    }
}

2.5、开启dubbo配置

在引导类上添加@EnableDubboConfiguration注解

@SpringBootApplication
@EnableDubboConfiguration//开启dubbo配置
public class Ch04SpringbootDubboProvideApplication {

    public static void main(String[] args) {
        SpringApplication.run(Ch04SpringbootDubboProvideApplication.class, args);
    }
}

三、服务消费者

3.1、创建spring boot工程

3.2、添加相关依赖

添加dubbo、注册中心、接口工程依赖

<!--接口工程-->
<dependency>
	<groupId>com.why</groupId>
	<artifactId>ch04-springboot-dubbo-interface</artifactId>
	<version>1.0-SNAPSHOT</version>
</dependency>
<!--Dubbo依赖-->
<dependency>
	<groupId>com.alibaba.spring.boot</groupId>
	<artifactId>dubbo-spring-boot-starter</artifactId>
	<version>2.0.0</version>
</dependency>
<!--注册中心依赖-->
<dependency>
	<groupId>com.101tec</groupId>
	<artifactId>zkclient</artifactId>
	<version>0.10</version>
</dependency>

3.3、配置springboot核心配置文件

#内嵌tomcat端口号
server.port=8080
#上下文根
server.servlet.context-path=/

#duoob配置
#服务消费者名称
spring.application.name=ch04-springboot-dubbo-consumer
#注册中心
spring.dubbo.registry=zookeeper://192.168.140.129:2181

3.4、编写Controller

@Controller
public class MyController {

    //引用服务提供者提供的服务
    @Reference(interfaceName = "com.why.service.StudentService",version = "1.0.0",check = false)
    StudentService studentService;

    @RequestMapping("/query")
    public @ResponseBody Object query(){
        Student student = studentService.queryStudent(1);
        return student.toString();
    }
}

3.5、开启dubbo配置

在引导类上添加@EnableDubboConfiguration注解

@SpringBootApplication
@EnableDubboConfiguration//开启dubbo配置
public class Ch04SpringbootDubboConsumerApplication {

    public static void main(String[] args) {
        SpringApplication.run(Ch04SpringbootDubboConsumerApplication.class, args);
    }
}

测试

启动zookeeper注册中心

• ./zkServer.sh start //在zookeeper的bin目录下执行

关闭防火墙

• systemctl stop firewalld //关闭防火墙

运行结果