Dubbo入门案例

1.基于以下图实现服务提供者、消费者

在这里插入图片描述

2.前期工作

父POM


<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>4.0.0modelVersion>

    <groupId>com.tianxiagroupId>
    <artifactId>dubbo-demoartifactId>
    <packaging>pompackaging>
    <version>1.0-SNAPSHOTversion>
    <modules>
        <module>user-service-providermodule>
    modules>

    
    <properties>
        <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
        <maven.compiler.source>1.8maven.compiler.source>
        <maven.compiler.target>1.8maven.compiler.target>
        <junit.version>4.12junit.version>
        <log4j.version>1.2.17log4j.version>
        <lombok.version>1.16.18lombok.version>
        <mysql.version>5.1.47mysql.version>
        <druid.version>1.1.16druid.version>
        <mybatis.spring.boot.version>1.3.0mybatis.spring.boot.version>
    properties>

    
    <dependencyManagement>
        <dependencies>
            
            <dependency>
                <groupId>org.springframework.bootgroupId>
                <artifactId>spring-boot-dependenciesartifactId>
                <version>2.2.2.RELEASEversion>
                <type>pomtype>
                <scope>importscope>
            dependency>
            
            <dependency>
                <groupId>mysqlgroupId>
                <artifactId>mysql-connector-javaartifactId>
                <version>${mysql.version}version>
            dependency>
            
            <dependency>
                <groupId>com.alibabagroupId>
                <artifactId>druidartifactId>
                <version>${druid.version}version>
            dependency>
            
            <dependency>
                <groupId>com.baomidougroupId>
                <artifactId>mybatis-plus-boot-starterartifactId>
                <version>3.4.2version>
            dependency>
            
            <dependency>
                <groupId>junitgroupId>
                <artifactId>junitartifactId>
                <version>${junit.version}version>
            dependency>
            
            <dependency>
                <groupId>log4jgroupId>
                <artifactId>log4jartifactId>
                <version>${log4j.version}version>
            dependency>
            
            <dependency>
                <groupId>org.projectlombokgroupId>
                <artifactId>lombokartifactId>
                <version>${lombok.version}version>
                <optional>trueoptional>
            dependency>
        dependencies>
    dependencyManagement>
project>
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3.创建通用模块 - api-common

POM

<dependencies>
    <dependency>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-devtoolsartifactId>
        <scope>runtimescope>
        
        <optional>falseoptional>
    dependency>
    <dependency>
        <groupId>org.projectlombokgroupId>
        <artifactId>lombokartifactId>
        <optional>falseoptional>
    dependency>
    <dependency>
        <groupId>cn.hutoolgroupId>
        <artifactId>hutool-allartifactId>
        <version>5.1.0version>
    dependency>
    <dependency>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-testartifactId>
        <scope>testscope>
    dependency>
dependencies>
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暂无YML

业务类

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;

/**
 * 用户地址
 * @author liqb
 * @date 2023-05-28 16:39
 */
@Data
@NoArgsConstructor
@AllArgsConstructor
public class UserAddress implements Serializable {
    
    private Integer id;

    /**
     * 用户地址
     */
    private String userAddress;

    /**
     * 用户id
     */
    private String userId;

    /**
     * 收货人
     */
    private String consignee;

    /**
     * 电话号码
     */
    private String phoneNum;

    /**
     * 是否为默认地址    Y-是     N-否
     */
    private String isDefault;
}
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import com.tianxia.dubbo.entity.UserAddress;

import java.util.List;

/**
 * 用户Service
 * @author liqb
 * @date 2023-05-28 16:47
 */
public interface UserService {

    /**
     * 按照用户id返回所有的收货地址
     * @author liqb
     * @date 2023-05-28 16:48
     * @param userId 用户id
     * @return
     */
    public List<UserAddress> getUserAddressList(String userId);
}
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/**
 * 订单服务
 * @author liqb
 * @date 2023-05-28 16:52
 */
public interface OrderService {

    /**
     * 初始化订单
     * @author liqb
     * @date 2023-05-28 16:52
     * @param userID 用户id
     */
    public void initOrder(String userID);
}
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2.创建用户服务提供者 - user-service-provider

POM

<dependencies>
    
    <dependency>
        <groupId>com.tianxiagroupId>
        <artifactId>api-commonartifactId>
        <version>1.0-SNAPSHOTversion>
    dependency>
    
    <dependency>
        <groupId>com.alibabagroupId>
        <artifactId>dubboartifactId>
    dependency>
    
    <dependency>
        <groupId>org.apache.curatorgroupId>
        <artifactId>curator-frameworkartifactId>
    dependency>
  dependencies>
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provider.xml


<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:registry protocol="zookeeper" address="127.0.0.1:2181"/>

    
    <dubbo:protocol name="dubbo" port="20881"/>

    
    <dubbo:service interface="com.tianxia.dubbo.api.UserService" ref="userServiceImpl"/>

    
    <bean id="userServiceImpl" class="com.tianxia.dubbo.service.impl.UserServiceImpl"/>
beans>
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业务类

import com.tianxia.dubbo.api.UserService;
import com.tianxia.dubbo.entity.UserAddress;
import org.springframework.stereotype.Service;

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

/**
 * 用户服务实现类
 * @author liqb
 * @date 2023-05-28 16:48
 */
@Service
public class UserServiceImpl implements UserService {

    /**
     * 按照用户id返回所有的收货地址
     * @author liqb
     * @date 2023-05-28 16:48
     * @param userId 用户id
     * @return
     */
    @Override
    public List<UserAddress> getUserAddressList(String userId) {
        UserAddress address1 = new UserAddress(1, "河南省郑州巩义市宋陵大厦2F", "1", "安然", "150360313x", "Y");
        UserAddress address2 = new UserAddress(2, "北京市昌平区沙河镇沙阳路", "1", "情话", "1766666395x", "N");

        return Arrays.asList(address1,address2);
    }
}
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启动类

import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.io.IOException;

/**
 * 启动类
 * @author liqb
 * @date 2023-05-28 17:27
 */
public class UserServiceProviderApplication {
    public static void main(String[] args) throws IOException {
        ClassPathXmlApplicationContext applicationContext= new ClassPathXmlApplicationContext("provider.xml");
        applicationContext.start();
        System.in.read();
    }
}
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在这里插入图片描述

zkServer.cmd、和zkCli.cmd服务
在dubbo-admin target中cmd运行 java -jar dubbo-admin-0.0.1-SNAPSHOT.jar
再次启动项目，我们可以看到在zookeeper中已经发现服务提供者。

在这里插入图片描述

服务提供者的配置和测试完成

4.创建服务消费者(订单服务) - order-service-consumer

POM

<dependencies>
    
    <dependency>
        <groupId>com.tianxiagroupId>
        <artifactId>api-commonartifactId>
        <version>1.0-SNAPSHOTversion>
    dependency>
    
    <dependency>
        <groupId>com.alibabagroupId>
        <artifactId>dubboartifactId>
    dependency>
    
    <dependency>
        <groupId>org.apache.curatorgroupId>
        <artifactId>curator-frameworkartifactId>
    dependency>
dependencies>
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consumer.xml


<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:dubbo="http://dubbo.apache.org/schema/dubbo"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
		http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd
		http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
   
    
    <context:component-scan base-package="com.tianxia.dubbo.service.impl"/>

    
    <dubbo:application name="order-service-consumer"/>
    
    
    <dubbo:registry address="zookeeper://127.0.0.1:2181"/>

    
    <dubbo:reference interface="com.tianxia.dubbo.api.UserService" id="userService"/>
beans>
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业务类

import com.tianxia.dubbo.api.OrderService;
import com.tianxia.dubbo.api.UserService;
import com.tianxia.dubbo.entity.UserAddress;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * 订单服务实现类
 * @author liqb
 * @date 2023-05-28 16:54
 */
@Service
public class OrderServiceImpl implements OrderService {

    @Autowired
    public UserService userService;

    /**
     * 初始化订单
     * @author liqb
     * @date 2023-05-28 16:52
     * @param userID 用户id
     */
    @Override
    public void initOrder(String userID) {
        // 查询用户的收货地址
        List<UserAddress> userAddressList = userService.getUserAddressList(userID);
        
        // 为了直观的看到得到的数据，以下内容也可不写
        System.out.println("当前接收到的userId=> "+userID);
        System.out.println("**********");
        System.out.println("查询到的所有地址为：");
        for (UserAddress userAddress : userAddressList) {
            // 打印远程服务地址的信息
            System.out.println(userAddress.getUserAddress());
        }
    }
}
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启动类

import com.tianxia.dubbo.api.OrderService;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.io.IOException;

/**
 * 启动类
 * @author liqb
 * @date 2023-05-28 17:40
 */
public class OrderServiceConsumerApplication {
    public static void main(String[] args) throws IOException {
        ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("consumer.xml");
        OrderService orderService = applicationContext.getBean(OrderService.class);

        // 调用方法查询出数据
        orderService.initOrder("1");
        System.out.println("调用完成...");
        System.in.read();
    }
}
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注意：消费者的运行测试需要先启动提供者。
启动服务提供者、消费者。及zookeeper的和dubbo-admin，查看监控信息。
localhost:7001

在这里插入图片描述

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原文地址：https://blog.csdn.net/weixin_44230693/article/details/130915438

Dubbo入门案例

1.基于以下图实现服务 提供者、消费者

2.前期工作

3.创建通用模块 - api-common

2.创建用户服务提供者 - user-service-provider

4.创建服务消费者(订单服务) - order-service-consumer

1.基于以下图实现服务提供者、消费者