springboot+zookeeper+dubbo 搭建项目

 

 

最近在自学分布式的一些东西，所以搭建了一个rpc远程调用框架demo，在这里记录一下。

首先创建看看项目结构，我分成了3个服务，api是公共的接口服务。

 

父项目的pom

<?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>2.3.1.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.wrc.rpc</groupId>
    <artifactId>rpcdemo</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>api</module>
        <module>provider</module>
        <module>consumer</module>
    </modules>

    <properties>
        <dubbo.version>0.2.0</dubbo.version>
        <zookeeper.vsersion>3.4.10</zookeeper.vsersion>
    </properties>



    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.alibaba.boot</groupId>
                <artifactId>dubbo-spring-boot-starter</artifactId>
                <version>${dubbo.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.zookeeper</groupId>
                <artifactId>zookeeper</artifactId>
                <version>${zookeeper.vsersion}</version>
                <exclusions>
                    <exclusion>
                        <groupId>org.slf4j</groupId>
                        <artifactId>slf4j-log4j12</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>

        </dependencies>
    </dependencyManagement>


</project>

provider项目的pom

<?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>2.3.1.RELEASE</version>-->
<!--    <relativePath/> &lt;!&ndash; lookup parent from repository &ndash;&gt;-->
<!--</parent>-->
    <parent>
        <artifactId>rpcdemo</artifactId>
        <groupId>com.wrc.rpc</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <groupId>com.wrc.rpc</groupId>
    <artifactId>provider</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>provider</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-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.wrc.rpc</groupId>
            <artifactId>api</artifactId>
            <version>1.0-SNAPSHOT</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>com.alibaba.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
    </dependency>
    </dependencies>

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

</project>

需要继承父项目的pom，然后引用。consumer和provider一样即可。

provider项目结构

application.properties配置文件

server.port=9000

#注册名字
dubbo.application.name=provider-demo

#zk注册中心地址
dubbo.registry.address=zookeeper://127.0.0.1:2181
#通讯规则 端口 协议
dubbo.protocol.port=20881
dubbo.protocol.name=dubbo

启动类

package com.wrc.rpc.provider;

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

//引用这个注解，会去扫描dubbo
@EnableDubbo
@SpringBootApplication
public class ProviderApplication {

    public static void main(String[] args) {
        SpringApplication.run(ProviderApplication.class, args);
        System.out.println("发布方启动成功");
    }

}

接口的发布

package com.wrc.rpc.provider.Impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.wrc.api.HelloDubboApi;
import org.springframework.stereotype.Component;

/**
 * @Author: wrc
 * @Classname HelloImpl
 * @Description TODO
 * @Date 2020/7/1 10:01
 * @Created wrc
 */
//service 这里引用dubbo的包，注意！
@Service 
@Component
public class HelloImpl  implements HelloDubboApi {


    @Override
    public String hello(String name) {
        return "干就完了"+name;
    }
}

 

consumer的配置文件

dubbo.application.name=consumer
dubbo.registry.address=zookeeper://127.0.0.1:2181

server.port=9001

启动类

package com.wrc.rpc.consumer;

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


@EnableDubbo
@SpringBootApplication
public class ConsumerApplication {

    public static void main(String[] args) {
        SpringApplication.run(ConsumerApplication.class, args);
        System.out.println("客户端启动成功");
    }

}

接口的调用

package com.wrc.rpc.consumer.Controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.wrc.api.HelloDubboApi;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @Author: wrc
 * @Classname HelloController
 * @Description TODO
 * @Date 2020/7/1 10:49
 * @Created wrc
 */
@RestController
public class HelloController {

    @Reference
    private HelloDubboApi helloDubboApi;


    @GetMapping("hello")
    public String getHello(String name){
        return helloDubboApi.hello(name);
    }

}

 

api服务

就一个公共类，需要把这个服务引入发布方和调用方。

package com.wrc.api;

/**
 * @Author: wrc
 * @Classname HelloDubboApi
 * @Description TODO
 * @Date 2020/6/29 10:53
 * @Created wrc
 */
public interface HelloDubboApi {

    String hello(String name);
}

服务启动测试

打开zooInspector，zk的可视化软件。

可以看到节点都注册上了

用postman测试

服务调用成功