小刘学习笔记

服务注册与发现

创建服务提供者

创建文件夹 hello-apache-dubbo-provider

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>ml.yompc</groupId>
        <artifactId>hello-apache-dubbo</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <artifactId>hello-apache-dubbo-provider</artifactId>
    <modules>
        <module>hello-apache-dubbo-provider-api</module>
        <module>hello-apache-dubbo-provider-service</module>
    </modules>
</project>

在 hello-apache-dubbo-provider 创建中 hello-apache-dubbo-provider-api文件夹

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>ml.yompc</groupId>
        <artifactId>hello-apache-dubbo</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <artifactId>hello-apache-dubbo-provider-api</artifactId>

</project>

创建接口

package ml.yompc.apache.dubbo.provider.api;

/**
 * @email yom535@outlook.com
 * @author: 有民(yom535)
 * @date: 2019/8/20
 * @time: 20:49
 */
public interface EchoService {
    String echo(String echo);
}

在 hello-apache-dubbo-provider 创建中 hello-apache-dubbo-provider-service文件夹

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>ml.yompc</groupId>
        <artifactId>hello-apache-dubbo-provider</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <packaging>jar</packaging>

    <artifactId>hello-apache-dubbo-provider-service</artifactId>
    <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>
        </dependency>

        <!-- Dubbo Spring Boot Starter -->
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>javax.servlet</groupId>
                    <artifactId>servlet-api</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-registry-nacos</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-serialization-kryo</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.nacos</groupId>
            <artifactId>nacos-client</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.spring</groupId>
            <artifactId>spring-context-support</artifactId>
        </dependency>
        <dependency>
            <groupId>ml.yompc</groupId>
            <artifactId>hello-apache-dubbo-provider-api</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>


    </dependencies>



    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>ml.yompc.apache.dubbo.provider.ProviderApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

创建ProviderApplication

package ml.yompc.apache.dubbo.provider;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

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

创建 EchoServiceImpl

package ml.yompc.apache.dubbo.provider.service;
import ml.yompc.apache.dubbo.provider.api.EchoService;
import org.apache.dubbo.config.annotation.Service;

/**
 * @email yom535@outlook.com
 * @author: 有民(yom535)
 * @date: 2019/8/20
 * @time: 20:49
 */
@Service(version = "1.0.0")
public class EchoServiceImpl implements EchoService{
    @Override
    public String echo(String echo) {
        return "Hello Echo";
    }
}

配置文件

application.yml

spring:
  application:
    name: dubbo-provider
  main:
    allow-bean-definition-overriding: true


dubbo:
  scan:
    base-packages: ml.yompc.apache.dubbo.provider.service
  protocol:
    name: dubbo
    port: -1
    serialization: kryo
  registry:
    address: nacos://184.172.234.118:30848

创建服务消费者

创建文件夹 hello-apache-dubbo-consumer

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>ml.yompc</groupId>
        <artifactId>hello-apache-dubbo</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <packaging>jar</packaging>

    <artifactId>hello-apache-dubbo-consumer</artifactId>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!-- Dubbo Spring Boot Starter -->
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-actuator</artifactId>
        </dependency>

        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-registry-nacos</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-serialization-kryo</artifactId>
        </dependency>

        <dependency>
            <groupId>com.alibaba.nacos</groupId>
            <artifactId>nacos-client</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.spring</groupId>
            <artifactId>spring-context-support</artifactId>
        </dependency>
        <dependency>
            <groupId>ml.yompc</groupId>
            <artifactId>hello-apache-dubbo-provider-api</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>


    </dependencies>



    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>ml.yompc.apache.dubbo.consumer.ConsumerApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

创建 ConsumerApplication

package ml.yompc.apache.dubbo.consumer;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
/**
 * @email 545186340@qq.com
 * @author:yom535
 * @date: 2019/8/18
 * @time: 16:46
 */
@SpringBootApplication
public class ConsumerApplication {
    public static void main(String[] args) {
        SpringApplication.run(ConsumerApplication.class,args);
    }
}

创建 EchoController

package ml.yompc.apache.dubbo.consumer.controller;

import ml.yompc.apache.dubbo.provider.api.EchoService;
import org.apache.dubbo.config.annotation.Reference;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

/**
 * @email yom535@outlook.com
 * @author: 有民(yom535)
 * @date: 2019/8/18
 * @time: 2:03
 */
@RestController
public class EchoController {

    @Reference(version = "1.0.0")
    private EchoService echoService;

    @GetMapping(value = "/echo/{echo}")
    public String echo (@PathVariable String echo){
        return echoService.echo(echo);
    }
}

配置文件

application.yml

spring:
  application:
    name: dubbo-consumer
  main:
    allow-bean-definition-overriding: true


dubbo:
  scan:
    base-packages: ml.yompc.apache.dubbo.consumer.controller
  protocol:
    name: dubbo
    port: -1
    serialization: kryo
  registry:
    address: nacos://184.172.234.118:30848
server:
  port: 8080
endpoints:
  dubbo:
    enabled: true
management:
  health:
    dubbo:
      status:
        defaults: memory
        extras: threadpool
  endpoints:
    web:
      exposure:
        include: "*"

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