新人一看就懂：Dubbo+Zookeeper的RPC远程调用框架demo_小言_互联网的博客

新人一看就懂：Dubbo+Zookeeper的RPC远程调用框架demo

2020-04-01 15:16 276人阅读评论(0)

这是一个基于Dubbo+Zookeeper的RPC远程调用框架demo，希望读者可以通过这篇文章大概能看懂这一个简单的框架搭建。后续我会陆续更新，微服务架构（Spring Boot、Spring Cloud）、分布式架构（Dobbo+Zookeeper）、大数据架构以及源码解析等相关的文章，感兴趣的话可以关注一下。

Dubbo是阿里巴巴公司开源的一个高性能优秀的服务框架，使得应用可通过高性能的 RPC 实现服务的输出和输入功能，可以和Spring框架无缝集成。
Dubbo是一款高性能、轻量级的开源Java RPC框架，它提供了三大核心能力：面向接口的远程方法调用，智能容错和负载均衡，以及服务自动注册和发现。

provider：暴露服务的服务提供方
consumer：调用远程服务的服务消费方
registry：服务注册于发现的注册中心
monitor：统计服务调用次数和调用时间的监控中心
container：服务运行容器

一、dubbo-provider

1、UserInfo

为什么要实现Serializable接口？当我们需要把对象的状态信息通过网络进行传输，或者需要将对象的状态信息持久化，以便将来使用时都需要把对象进行序列化。

@Data
public class UserInfo implements Serializable {
    private String account;
    private String password;
}

2、UserService

public interface UserService {
    // 定义用户登录的api
    UserInfo login(UserInfo user);
}

3、UserServiceImpl

@Component
@Service(interfaceClass = UserService.class)
public class UserServiceImpl implements UserService {
    public UserInfo login(UserInfo user) {
        UserInfo reUser = new UserInfo();
        reUser.setAccount("登录的账号为:"+user.getAccount());
        reUser.setPassword("登录的密码为:"+user.getPassword());

        return reUser;
    }
}

4、DubboProviderApplication

@SpringBootApplication
@EnableDubboConfiguration // 启用dubbo自动配置
public class DubboProviderApplication {

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

5、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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.boot.dubbo.demo</groupId>
    <artifactId>dubbo-provider</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>dubbo-provider</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.6.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>

        <dependency>
            <groupId>com.alibaba.spring.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>2.0.0</version>
        </dependency>

        <!--自动生成getter，setter，equals，hashCode和toString等等-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.20</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>com.101tec</groupId>
            <artifactId>zkclient</artifactId>
            <version>0.10</version>
        </dependency>

        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>3.4.10</version>
            <exclusions>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-log4j12</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                </exclusion>
            </exclusions>
        </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>

6、application.yml

spring:
  dubbo:
    application:
      name: dubbo-provider
    protocol:
      name: dubbo
      port: 20880
    registry:
      address: zookeeper://127.0.0.1:2181

二、dubbo-consumer

1、UserController

@RestController
public class UserController {

    @Reference // 引用dubbo服务器提供服务器接口
    private UserService userService;

    @GetMapping("/login")
    public UserInfo login(UserInfo userInfo) {
        return userService.login(userInfo);
    }
}

2、DubboConsumerApplication

@SpringBootApplication
@EnableDubboConfiguration // 启用dubbo自动配置
public class DubboConsumerApplication {

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

3、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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.boot.dubbo.demo</groupId>
    <artifactId>dubbo-consumer</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>dubbo-consumer</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.6.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.boot.dubbo.demo</groupId>
            <artifactId>dubbo-provider</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>

        <dependency>
            <groupId>com.alibaba.spring.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>2.0.0</version>
        </dependency>

        <dependency>
            <groupId>com.101tec</groupId>
            <artifactId>zkclient</artifactId>
            <version>0.10</version>
        </dependency>

        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>3.4.10</version>
            <exclusions>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-log4j12</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                </exclusion>
            </exclusions>
        </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>

4、application.yml

spring:
  dubbo:
    application:
      name: dubbo-consumer
    protocol:
      name: dubbo
      port: 20880
    registry:
      address: zookeeper://127.0.0.1:2181
server:
  port: 8081

三、Zookeeper安装配置

《Zookeeper是什么？》
《Zookeeper的安装配置》
《Zookeeper集群环境搭建》

四、项目启动

五、查看Zookeeper服务注册情况

六、通过浏览器访问

dubbo-provider的服务注册到Zookeeper上，dubbo-consumer消费者调用注册的服务。
到此，rpc远程调用服务通了！感兴趣的话可以去学习下。
想要demo源码的可以留下邮箱地址。

转载：https://blog.csdn.net/sinat_27933301/article/details/100991670

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