springboot（分布式）整合dubbo

1.服务提供者配置

//需要额外引入的jar包  提供者      
<dependency>
            <groupId>com.alibaba.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>0.2.0</version>
        </dependency>

        <dependency>
            <groupId>com.github.sgroschupf</groupId>
            <artifactId>zkclient</artifactId>
            <version>0.1</version>
        </dependency>

• spring配置方式

  <?xml version="1.0" encoding="UTF-8"?>
  <beans xmlns="http://www.springframework.org/schema/beans"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
         xsi:schemaLocation="http://www.springframework.org/schema/beans
      http://www.springframework.org/schema/beans/spring-beans.xsd
      http://code.alibabatech.com/schema/dubbo
      http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
  
  <dubbo:application name="user-service-provider"></dubbo:application>
      <!-- 指定注册中心的地址,将来服务提供者要向注册中心进行注册-->
      <dubbo:registry address="zookeeper://192.168.192.3:2181"></dubbo:registry>
      <!-- 指定将来服务消费者消费我的时候使用的rpc协议 -->
      <dubbo:protocol name="dubbo" port="11123"></dubbo:protocol>
      <!-- 服务发布 -->
      <bean id="userService" class="com.oracle.shop.user.service.impl.UserServiceImpl"></bean>
      <dubbo:service interface="com.oracle.shop.user.service.UserService" ref="userService"></dubbo:service>
  
  </beans>
  

• springboot配置方式

#dubbo的配置
#服务名
dubbo.application.name=user-provider
#注册中心地址
dubbo.registry.address=zookeeper://192.168.192.3:2181
#使用的协议以及端口号
dubbo.protocol.name=dubbo
dubbo.protocol.port=11111

发布服务的方式

• 在相应的实现类上添加注解

  import com.alibaba.dubbo.config.annotation.Service;
  import com.oracle.shopping.user.mapper.MenuMapper;
  import com.oracle.shopping.user.po.Menu;
  import com.oracle.shopping.user.service.MenuService;
  import javax.annotation.Resource;
  @Service  //dubbo的注解表示发布该类
  @org.springframework.stereotype.Service//spring的注解表示会在启动时实例化该类
  public class MenuServiceImpl implements MenuService {
  
      @Resource
      private MenuMapper menuMapper;
  
      @Override
      public int deleteByPrimaryKey(String id) {
          return menuMapper.deleteByPrimaryKey(id);
      }
  
      @Override
      public int insert(Menu record) {
          return menuMapper.insert(record);
      }
  
      @Override
      public int insertSelective(Menu record) {
          return menuMapper.insertSelective(record);
      }
  
      @Override
      public Menu selectByPrimaryKey(String id) {
          return menuMapper.selectByPrimaryKey(id);
      }
  
      @Override
      public int updateByPrimaryKeySelective(Menu record) {
          return menuMapper.updateByPrimaryKeySelective(record);
      }
  
      @Override
      public int updateByPrimaryKey(Menu record) {
          return menuMapper.updateByPrimaryKey(record);
      }
  
  }
  

  • 启动类中添加dubbo的扫包器，设置扫描路径

    @SpringBootApplication
    @MapperScan("com.oracle.shopping.user.mapper")
    @EnableTransactionManagement
    @DubboComponentScan("com.oracle.shopping.user.service.impl")
    public class UserProviderApp {
    
        public static void main(String[] args) {
           SpringApplication.run(UserProviderApp.class, args);
        }
    }
    

2.服务消费者订阅

        <dependency>
            <groupId>com.alibaba.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>0.2.0</version>
        </dependency>

        <dependency>
            <groupId>com.github.sgroschupf</groupId>
            <artifactId>zkclient</artifactId>
            <version>0.1</version>
        </dependency>

• spring配置方式

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://code.alibabatech.com/schema/dubbo
    http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

<dubbo:application name="user-web-consumer"></dubbo:application>
    <!-- 指定注册中心的地址,将来服务提供者要向注册中心进行注册-->
    <dubbo:registry address="zookeeper://192.168.192.3:2181"></dubbo:registry>
    <!-- 订阅具体服务，让dubbo帮咱们生成动态代理客户端对象-->
    <dubbo:reference interface="com.oracle.shop.user.service.UserService" id="userService"></dubbo:reference>
    <dubbo:reference interface="com.oracle.shop.order.service.OrderService" id="orderService"></dubbo:reference>

</beans>

• 在controller中进行依赖注入和调用

  @Controller
  @RequestMapping("/user")
  public class UserController {
      //通过动态代理的方式生成的动态代理类
      @Autowired(required = false)
      private UserService userService;
      //不进行检查，防止报错无法运行
      @Autowired(required = false)
      private OrderService orderService;
  
  
      @RequestMapping("/a")
      public @ResponseBody
      User detail(){
       return userService.findUserById(1);
      }
  
      @RequestMapping("/b")
      public @ResponseBody
      Orders details(){
          return orderService.findUserById(1);
      }
  
  }
  

• springboot配置方式

#指定自己的名称
dubbo.application.name=user-consumer
#指定注册中心的地址
dubbo.registry.address=zookeeper://192.168.192.3:2181

​ 在controller当中使用注解声明要使用的服务（实现类）

@RestController
@RequestMapping("/user")
public class UserController {

    //表示要使用的服务
    @Reference(interfaceName = "com.oracle.shopping.user.service.UserService")
    private UserService userService;

    @Autowired
    private RedisTemplate redisTemplate;


    @RequestMapping("/detail")
    public User detail(String id){
        return userService.selectByPrimaryKey(id);
    }
}

• 启动类中设置dobbo注解的扫描路径

  @SpringBootApplication
  @DubboComponentScan("com.oracle.shopping.user.controller")
  public class UserConsumerApp {
  
      public static void main(String[] args) {
          SpringApplication.run(UserConsumerApp.class );
      }
  }