六、Dubbo与SpringBoot整合

​​Dubbo目录​​

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文章目录

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六、Dubbo与SpringBoot整合

6.1、项目结构

和之前的​​四、dubbo-helloworld​​基本是一样的，只不过provider、consumer是SpringBoot项目，

api-interface：公共接口层

boot-order-service-consumer：订单模块（调用用户模块）

boot-user-service-provider：用户模块（对用户接口的实现）

boot-order-service-consumer、boot-user-service-provider模块都需要依赖api-interface模块

6.2、项目搭建

6.2.1、导入依赖

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

注意starter版本适配：

注意springboot的版本，这里用的是比较老的：2.0.4.RELEASE。新版的，有很多错误

6.2.2、boot-user-service-provider模块修改

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>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.4.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
  </parent>
  <groupId>com.wlw.dubbo</groupId>
  <artifactId>boot-user-service-provider</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>boot-user-service-provider</name>
  <description>Demo project for Spring Boot</description>
  <properties>
    <java.version>1.8</java.version>
  </properties>
  <dependencies>
    <!--公共模块-->
    <dependency>
      <groupId>com.wlw.dubbo</groupId>
      <artifactId>api-interface</artifactId>
      <version>1.0-SNAPSHOT</version>
    </dependency>
    <!--Dubbo-->
    <dependency>
      <groupId>com.alibaba.boot</groupId>
      <artifactId>dubbo-spring-boot-starter</artifactId>
      <version>0.2.0</version>
    </dependency>


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

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

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

</project>

application.properties配置文件：

server.port=8082

dubbo.application.name=boot-user-service-provider
dubbo.registry.protocol=zookeeper
dubbo.registry.address=127.0.0.1:2181

#通信协议
dubbo.protocol.name=dubbo
dubbo.protocol.port=20880

#监控中心
dubbo.monitor.protocol=registry
dubbo.scan.base-packages=com.wlw.dubbo.service

暴漏服务:

package com.wlw.dubbo.service.impl;


import com.alibaba.dubbo.config.annotation.Service;
import com.wlw.dubbo.bean.UserAddress;
import com.wlw.dubbo.service.UserService;
import org.springframework.stereotype.Component;

import java.util.Arrays;
import java.util.List;

@Service //此注解作用是暴漏服务，之前是在配置文件中配置暴漏哪个服务
@Component
public class UserServiceImpl implements UserService {

  @Override
  public List<UserAddress> getUserAddressList(String userId) {
    System.out.println("UserServiceImpl........");
    UserAddress address1 = new UserAddress(1, "北京市昌平区宏福科技园综合楼3层", "1", "李老师", "010-56253825", "Y");
    UserAddress address2 = new UserAddress(2, "深圳市宝安区西部大厦B座3层", "1", "王老师", "010-56253825", "N");
    /*try {
      Thread.sleep(4000);
    } catch (InterruptedException e) {
      e.printStackTrace();
    }*/
    return Arrays.asList(address1,address2);
  }

}

开启Dubbo：

package com.wlw.dubbo;

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

@EnableDubbo//开启基于注解的Dubbo功能
@SpringBootApplication
public class BootUserServiceProviderApplication {

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

}

6.2.3、boot-order-service-consumer模块修改

application.properties配置文件：

server.port=8084

dubbo.application.name=boot-order-service-consumer
dubbo.registry.protocol=zookeeper
dubbo.registry.address=127.0.0.1:2181

#监控中心
dubbo.monitor.protocol = registry

dubbo.scan.base-packages = com.wlw.dubbo.service

远程引用指定的服务:

package com.wlw.dubbo.service.impl;

import com.alibaba.dubbo.config.annotation.Reference;
import com.wlw.dubbo.bean.UserAddress;
import com.wlw.dubbo.service.OrderService;
import com.wlw.dubbo.service.UserService;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class OrderServiceImpl implements OrderService {

  //@Autowired
  @Reference //远程引用指定的服务，他会按照全类名进行匹配，看谁给注册中心注册了这个全类名
  UserService userService;

  @Override
  public List<UserAddress> initOrder(String userId) {
    System.out.println("用户id："+userId);

    //1、查询用户的收货地址
    List<UserAddress> addressList = userService.getUserAddressList(userId);
    return addressList;
  }

}

controller:

package com.wlw.dubbo.controller;

import java.util.List;

import com.wlw.dubbo.bean.UserAddress;
import com.wlw.dubbo.service.OrderService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

@RestController
public class OrderController {

  @Autowired
  OrderService orderService;

  @GetMapping("/initOrder")
  public List<UserAddress> initOrder(@RequestParam("uid")String userId) {
    System.out.println("consumer-调用方法");
    return orderService.initOrder(userId);
  }
}

启动类：

package com.wlw.dubbo;

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

@EnableDubbo //开启基于注解的Dubbo功能
@SpringBootApplication
public class BootOrderServiceConsumerApplication {

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

6.2.3、测试

启动提供者，启动消费者，在浏览器中输入：localhost:8084/initOrder?uid=1 ，就可看到相应的输出，监控平台也有相应的展示。

6.2.4、总结

详细代码：​​wlw/dubboDemo (gitee.com)​​

过程总结：

开启zookeeper服务（怎么开启：可参考：​​三、Dubbo环境搭建​​）

• 提供者:

• 导入依赖
• 添加配置
• 暴漏服务：通过注解(com.alibaba.dubbo.config.annotation.Service) 来实现
• 启动类开启Dubbo，注解：@EnableDubbo

• 消费者：

• 导入依赖
• 添加配置
• 远程引用指定的服务，注解：com.alibaba.dubbo.config.annotation.Reference;
• 启动类开启Dubbo，注解：@EnableDubbo