Dubbo与springboot整合

在IDEA中创建spring-boot项目user-service-gmall以及两个module：user-service-provider、user-service-consumer。

父项目pom.xml文件如下：

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.5.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.moon</groupId>
    <artifactId>user-service-gmall</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>user-service-gmall</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</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>
        <defaultGoal>compile</defaultGoal>
    </build>

<modules>
        <module>user-service-provider</module>
        <module>user-service-consumer</module>
</modules>
</project>

父项目中包含了接口和一个bean类

public class UserAddress implements Serializable {
    
    private Integer id;
    private String userAddress; //用户地址
    private String userId; //用户id
    private String consignee; //收货人
    private String phoneNum; //电话号码
    private String isDefault; //是否为默认地址    Y-是     N-否
    
    public UserAddress() {
        super();
        // TODO Auto-generated constructor stub
    }
    
    public UserAddress(Integer id, String userAddress, String userId, String consignee, String phoneNum,
            String isDefault) {
        super();
        this.id = id;
        this.userAddress = userAddress;
        this.userId = userId;
        this.consignee = consignee;
        this.phoneNum = phoneNum;
        this.isDefault = isDefault;
    }
    
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getUserAddress() {
        return userAddress;
    }
    public void setUserAddress(String userAddress) {
        this.userAddress = userAddress;
    }
    public String getUserId() {
        return userId;
    }
    public void setUserId(String userId) {
        this.userId = userId;
    }
    public String getConsignee() {
        return consignee;
    }
    public void setConsignee(String consignee) {
        this.consignee = consignee;
    }
    public String getPhoneNum() {
        return phoneNum;
    }
    public void setPhoneNum(String phoneNum) {
        this.phoneNum = phoneNum;
    }
    public String getIsDefault() {
        return isDefault;
    }
    public void setIsDefault(String isDefault) {
        this.isDefault = isDefault;
    }

}

public interface OrderService {
    
    /**
     * 初始化订单
     * @param userId
     */
    public List<UserAddress> initOrder(String userId);

}

public interface UserService {
    
    /**
     * 按照用户id返回所有的收货地址
     * @param userId
     * @return
     */
    public List<UserAddress> getUserAddressList(String userId);

}

user-service-provider module：

 

pom.xml文件中添加：

    <dependency>
            <groupId>com.alibaba.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>0.2.0</version>
        </dependency> <!--dubbo springboot-->
 <dependency>
            <groupId>com.moon</groupId>
            <artifactId>user-service-gmall</artifactId>
            <version>0.0.1-SNAPSHOT</version>
</dependency>  <!--父项目依赖 -->

UserServiceImpl实现类：

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

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

@Service//暴露服务
@Component
public class UserServiceImpl implements UserService {
    @Override
    public List<UserAddress> getUserAddressList(String userId) {
        System.out.println("UserServiceImpl.....old...");
        // TODO Auto-generated method stub
        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, "深圳市宝安区西部硅谷大厦B座3层（深圳分校）", "1", "王老师", "010-56253825", "N");
        return Arrays.asList(address1,address2);
    }
}

 application.properties

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

dubbo.protocol.name=dubbo
dubbo.protocol.port=20882

dubbo.monitor.protocol=registry

#dubbo.scan.base-packages=com.moon #与@EnableDubbo功能相同

 user-service-consumer

pom文件同上，OrderServiceImpl文件内容：

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

import java.util.List;

@Service
public class OrderServiceImpl implements OrderService {
    //@Autowired
    @Reference
    UserService userService;
    @Override
    public List<UserAddress> initOrder(String userId) {
        // TODO Auto-generated method stub
        System.out.println("用户id："+userId);
        //1、查询用户的收货地址
        List<UserAddress> addressList = userService.getUserAddressList(userId);
        for (UserAddress u:addressList
             ) {
            System.out.println(u.getId()+" "+u.getUserAddress());
        }
        return addressList;
    }
}

controller文件

import com.moon.userservicegmall.bean.UserAddress;
import com.moon.userservicegmall.service.OrderService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import java.util.List;

@Controller
public class OrderController {
   @Autowired
    OrderService orderService;


    @ResponseBody
    @RequestMapping("/initOrder")
    public List<UserAddress> initOrder(@RequestParam("uid")String userId) {
        System.out.println("ok!");
        return orderService.initOrder(userId);
      //  return null;
    }
}

application.properties文件

server.port=8081


dubbo.application.name=user-service-consumer
dubbo.registry.address=127.0.0.1:2181
dubbo.registry.protocol=zookeeper
dubbo.monitor.protocol=registry

分别启动生产者与消费者，访问http://localhost:8081/initOrder?uid=1。

 

 

遇到问题

消费者无法注册到注册中心，问题的缘由是在OrderServiceImpl类上忘记使用了org.springframework.stereotype.Service注解，导致不能使用AutoWired自动注入。