Dubbo实战

专栏目录:*
Dubbo基础: https://blog.csdn.net/qq_38310244/article/details/125891802
Dubbo实战: https://blog.csdn.net/qq_38310244/article/details/125892120
手写一套简单的dubbo（含注册中心）之编程思想: https://blog.csdn.net/qq_38310244/article/details/125892641
手写一套简单的dubbo（含注册中心）之核心代码: https://blog.csdn.net/qq_38310244/article/details/125892849

上一篇：Dubbo基础已经介绍了Dubbo的一些理论知识，现在开始代码实战。

代码实现

定义一个公共接口的模块dubbo-api

在这里插入图片描述

User类

package com.mywork.dubboapi.bean;

import lombok.Data;

import java.io.Serializable;

/**
 * @Author: huangjun
 * @Date: 2022/6/22 16:52
 * @Version 1.0
 */
@Data
public class User implements Serializable {

    private Integer id;
    private String name;
}

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公共接口UserService类，相当于服务提供者和服务消费者之间的桥梁

package com.mywork.dubboapi.service;

import com.mywork.dubboapi.bean.User;

/**
 * @Author: huangjun
 * @Date: 2022/6/22 16:53
 * @Version 1.0
 */
public interface UserService {

    User getUser();
}

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基于Springboot注解配置实现

服务提供者

$[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-zktRiQBi-1658299535301)(E:\study\dubbo\image\image-20220707173804843.png)]$

pom.xml文件引用主要依赖


        <dependency>
            <groupId>com.alibaba.bootgroupId>
            <artifactId>dubbo-spring-boot-starterartifactId>
            <version>0.1.0version>
        dependency>
        
        <dependency>
            <groupId>com.101tecgroupId>
            <artifactId>zkclientartifactId>
            <version>0.10version>
        dependency>

        
        <dependency>
            <groupId>com.myworkgroupId>
            <artifactId>dubbo-apiartifactId>
            <version>0.0.1-SNAPSHOTversion>
        dependency>
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定义dubbo的配置信息，DubboConfiguration类

package com.mywork.dubboprovider.config;

import com.alibaba.dubbo.config.ApplicationConfig;
import com.alibaba.dubbo.config.ProtocolConfig;
import com.alibaba.dubbo.config.RegistryConfig;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * @Author: huangjun
 * @Date: 2022/7/7 15:20
 * @Version 1.0
 */
@Configuration
public class DubboConfiguration {

    /**
     * 定义应用名称
     */
    @Bean
    public ApplicationConfig applicationConfig(){
        return new ApplicationConfig("mywork-provider");
    }

    /**
     * 注册中心地址
     */
    @Bean
    public RegistryConfig registryConfig(){
        return new RegistryConfig("zookeeper://127.0.0.1:2181");
    }

    /**
     * 定义dubbo协议和监听端口
     */
    @Bean
    public ProtocolConfig protocolConfig(){
        return new ProtocolConfig("dubbo",20888);
    }
}

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实现公共接口

package com.mywork.dubboprovider.serviceImpl;

import com.alibaba.dubbo.config.annotation.Service;
import com.mywork.dubboapi.bean.User;
import com.mywork.dubboapi.service.UserService;

/**
 * @Author: huangjun
 * @Date: 2022/6/22 17:03
 * @Version 1.0
 */
//*******注意，这里的service注解用的不是spring的注解，而是com.alibaba.dubbo.config.annotation.Service;****
@Service
@org.springframework.stereotype.Service("userServer")
public class UserServiceImpl implements UserService {
    @Override
    public User getUser() {
        User user = new User();
        user.setId(1);
        user.setName("基于【注解】文件");
        return user;
    }
}

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启动类添加dubbo需要扫描的包

package com.mywork.dubboprovider;

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



@SpringBootApplication
@DubboComponentScan(basePackages = "com.mywork.dubboprovider.serviceImpl") //扫描接口实现类
public class DubboProviderApplication {

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

}

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至此，完成服务提供者的开发。

服务消费者

在这里插入图片描述

pom.xml主要依赖

!-- https://mvnrepository.com/artifact/com.alibaba.boot/dubbo-spring-boot-project -->
        <dependency>
            <groupId>com.alibaba.bootgroupId>
            <artifactId>dubbo-spring-boot-starterartifactId>
            <version>0.1.0version>
        dependency>
        
        <dependency>
            <groupId>com.101tecgroupId>
            <artifactId>zkclientartifactId>
            <version>0.10version>
        dependency>
        
        <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>fastjsonartifactId>
            <version>1.2.47version>
        dependency>
        
        <dependency>
            <groupId>com.myworkgroupId>
            <artifactId>dubbo-apiartifactId>
            <version>0.0.1-SNAPSHOTversion>
        dependency>
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定义dubbo配置信息

package com.mywork.dubboconsumer.config;

import com.alibaba.dubbo.config.ApplicationConfig;
import com.alibaba.dubbo.config.ConsumerConfig;
import com.alibaba.dubbo.config.RegistryConfig;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * @Author: huangjun
 * @Date: 2022/7/7 15:27
 * @Version 1.0
 */
@Configuration
public class DubboConfiguration {

    /**
     * 定义应用名称
     */
    @Bean
    public ApplicationConfig applicationConfig(){
        return new ApplicationConfig("mywork-consumer");
    }

    /**
     * 设置消费者超时时间
     */
    @Bean
    public ConsumerConfig consumerConfig(){
        ConsumerConfig consumerConfig = new ConsumerConfig();
        consumerConfig.setTimeout(3000);
        return consumerConfig;
    }

    /**
     * 注册中心地址
     */
    @Bean
    public RegistryConfig registryConfig(){
        return new RegistryConfig("zookeeper://127.0.0.1:2181");
    }
}

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引用代理类实现业务

package com.mywork.dubboconsumer.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.mywork.dubboapi.bean.User;
import com.mywork.dubboapi.service.UserService;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @Author: huangjun
 * @Date: 2022/6/22 17:08
 * @Version 1.0
 */
@RestController
@RequestMapping("/user")
public class UserController {

    @Reference
    private UserService userService;

    @GetMapping("/getUser")
    public User getUser(){
        return userService.getUser();
   
}

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启动类添加dubbo注解

package com.mywork.dubboconsumer;

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


@SpringBootApplication
@EnableDubbo //开启dubbo
public class DubboConsumerApplication {

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

}

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测试

启动zookeeper，启动服务提供者，启动服务消费者

管理界面查看

dubbo-admin管理界面：

在这里插入图片描述

可以看到我们的服务已经在注册中心进行了发布和订阅

接口测试

在这里插入图片描述

调用成功

基于Springboot配置文件实现

服务提供者

在这里插入图片描述

pom.xml核心依赖

 
        <dependency>
            <groupId>com.alibaba.bootgroupId>
            <artifactId>dubbo-spring-boot-starterartifactId>
            <version>0.1.0version>
        dependency>
        
        <dependency>
            <groupId>com.101tecgroupId>
            <artifactId>zkclientartifactId>
            <version>0.10version>
        dependency>

        
        <dependency>
            <groupId>com.myworkgroupId>
            <artifactId>dubbo-apiartifactId>
            <version>0.0.1-SNAPSHOTversion>
        dependency>
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在resource目录下新建dubbo-provider.xml配置文件进行dubbo信息的配置


<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"
       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://code.alibabatech.com/schema/dubbo
    http://code.alibabatech.com/schema/dubbo/dubbo.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    
    <dubbo:application name="mywork-file-provide"/>

    
    <dubbo:registry id="local" address="zookeeper://127.0.0.1:2181"/>

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

    
    
    
    <dubbo:service registry="local" interface="com.mywork.dubboapi.service.UserService" ref="userServer"/>
beans>

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定义公共接口的实现

package com.mywork.dubbofileprovider.serverImpl;

import com.mywork.dubboapi.bean.User;
import com.mywork.dubboapi.service.UserService;
import org.springframework.stereotype.Service;

/**
 * @Author: huangjun
 * @Date: 2022/6/22 17:03
 * @Version 1.0
 */
@Service("userServer")
public class UserServiceImpl implements UserService {
    @Override
    public User getUser() {
        User user = new User();
        user.setId(1);
        user.setName("基于【配置】文件");
        return user;
    }
}

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启动类引入dubbo依赖

package com.mywork.dubbofileprovider;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ImportResource;

@SpringBootApplication
@ImportResource("classpath:dubbo-provider.xml") //引入dubbo的配置
public class DubboFileProviderApplication {

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

}

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至此，完成服务提供者的开发。

服务消费者

在这里插入图片描述

pom.xml核心依赖


        <dependency>
            <groupId>com.alibaba.bootgroupId>
            <artifactId>dubbo-spring-boot-starterartifactId>
            <version>0.1.0version>
        dependency>
        
        <dependency>
            <groupId>com.101tecgroupId>
            <artifactId>zkclientartifactId>
            <version>0.10version>
        dependency>
        
        <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>fastjsonartifactId>
            <version>1.2.47version>
        dependency>
        
        <dependency>
            <groupId>com.myworkgroupId>
            <artifactId>dubbo-apiartifactId>
            <version>0.0.1-SNAPSHOTversion>
        dependency>
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在resource下新建dubbo-consumer.xml进行dubbo信息的配置


<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="mywork-file-consumer"/>
    <dubbo:registry id="local" address="zookeeper://127.0.0.1:2181"/>
    <dubbo:protocol name="dubbo"/>
    
    
    <dubbo:reference registry="local" id="userService" interface="com.mywork.dubboapi.service.UserService"/>

beans>

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引用公共接口实现业务

package com.mywork.dubbofileconsumer.controller;

import com.mywork.dubboapi.bean.User;
import com.mywork.dubboapi.service.UserService;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

/**
 * @Author: huangjun
 * @Date: 2022/6/22 17:08
 * @Version 1.0
 */
@RestController
@RequestMapping("/user")
public class UserController {

    /**
     * 跟springboot一样，正常引用容器里的对象即可
     */
    @Resource
    private UserService userService;

    @GetMapping("/getUser")
    public User getUser(){
        return userService.getUser();
    }
}

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启动类引入dubbo配置

package com.mywork.dubbofileconsumer;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ImportResource;

@SpringBootApplication
@ImportResource("classpath:dubbo-consumer.xml")
public class DubboFileConsumerApplication {

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

}

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至此，完成服务消费者的开发

测试

启动zookeeper，启动服务提供者，启动服务消费者

管理界面查看

dubbo-admin管理界面：

在这里插入图片描述

可以看到我们的服务已经在注册中心进行了发布和订阅

接口测试

在这里插入图片描述

调用成功

基于jdk的配置文件实现

服务消费者

在这里插入图片描述

为了方便引入jar和对jar包的管理，这里使用Maven来管理依赖

pom.xml核心依赖

 
        <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>fastjsonartifactId>
            <version>1.2.47version>
        dependency>

        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-contextartifactId>
            <version>5.3.5version>
        dependency>

        
        <dependency>
            <groupId>com.myworkgroupId>
            <artifactId>dubbo-apiartifactId>
            <version>0.0.1-SNAPSHOTversion>
        dependency>

        
        <dependency>
            <groupId>com.alibaba.bootgroupId>
            <artifactId>dubbo-spring-boot-starterartifactId>
            <version>0.1.0version>
        dependency>
        
        <dependency>
            <groupId>com.101tecgroupId>
            <artifactId>zkclientartifactId>
            <version>0.10version>
        dependency>
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在resource下新建dubbo-consumer.xml进行dubbo信息的配置


<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="mywork-jdk-consumer"/>
    <dubbo:registry id="register" address="zookeeper://127.0.0.1:2181"/>
    <dubbo:protocol name="dubbo"/>
    
    
    <dubbo:reference registry="register" id="userService" interface="com.mywork.dubboapi.service.UserService"/>

beans>

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主方法调用服务提供者接口

package com.mywork;

import com.alibaba.fastjson.JSON;
import com.mywork.dubboapi.bean.User;
import com.mywork.dubboapi.service.UserService;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * @Author: huangjun
 * @Date: 2022/7/7 18:32
 * @Version 1.0
 */
public class Main {

    public static void main(String[] args) {
        //获取配置文件
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("consumer.xml");
        //装载配置文件
        context.start();
        System.out.println("consumer start");
        //从配置文件中获取到bean
        UserService userService = context.getBean(UserService.class);
        //调用服务生产者的代理的接口
        User user = userService.getUser();
        System.out.println("执行结果===>" + JSON.toJSONString(user));
    }
}

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测试

启动zookeeper，启动服务提供者，启动主方法

调用结果：

在这里插入图片描述
下一篇：手写一套简单的dubbo（含注册中心）之编程思想

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原文地址：https://blog.csdn.net/qq_38310244/article/details/125892120