Dubbo的使用入门

时间：2023-03-09 22:14:40
Dubbo的使用入门

一、包引入

1、父模块pom.xml中加入依赖：

  　　　　<!-- dubbo -->

        <dependency>

            <groupId>com.alibaba.boot</groupId>

            <artifactId>dubbo-spring-boot-starter</artifactId>

            <version>0.2.0</version>

        </dependency>

我这里还引入了SpringBoot和一些常用组件

    <!--Add Spring boot Parent-->

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>2.0.4.RELEASE</version>

    </parent>

    <dependencies>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-devtools -->

        <!--SpringBoot核心模块，包括自动配置支持、日志和YAML-->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter</artifactId>

        </dependency>

        <!--测试模块，包括JUnit、Hamcrest、Mockito-->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-test</artifactId>

        </dependency>

        <!--热部署-->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-devtools</artifactId>

            <version>2.0.4.RELEASE</version>

        </dependency>

        <dependency>

            <groupId>org.projectlombok</groupId>

            <artifactId>lombok</artifactId>

            <version>1.16.22</version>

        </dependency>

        <!-- JPA操作数据库 -->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-data-jpa</artifactId>

            <version>2.0.4.RELEASE</version>

        </dependency>

        <!-- dubbo -->

        <dependency>

            <groupId>com.alibaba.boot</groupId>

            <artifactId>dubbo-spring-boot-starter</artifactId>

            <version>0.2.0</version>

        </dependency>

        <!--Web模块-->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

        <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->

        <dependency>

            <groupId>com.alibaba</groupId>

            <artifactId>fastjson</artifactId>

            <version>1.2.51</version>

        </dependency>

    </dependencies>

2、服务提供者子模块的application.properties中加入下列配置

server.port=

spring.application.name=dubbo-provider-users

dubbo.application.name=dubbo-provider-users

dubbo.registry.protocol=zookeeper

dubbo.registry.address=172.16.4.132:|172.16.4.131:|172.16.4.133:

dubbo.protocol.name=dubbo

dubbo.protocol.port=

dubbo.scan.base-packages=com.test.usersservice

dubbo.consumer.timeout=

dubbo.provider.timeout=

dubbo.registry.timeout=

dubbo.consumer.retries=

dubbo.provider.retries=

dubbo.consumer.callbacks=

dubbo.provider.callbacks=

dubbo.consumer.check=false

dubbo.registry.check=false

dubbo.application.qos-enable=false

发部服务，可以这样：

import com.alibaba.dubbo.config.annotation.Service;

import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

import javax.validation.constraints.NotNull;

import java.util.List;

@Service(version = "1.0.0")

@RestController

public class UserProvider implements IUserProvider {

    @Resource

    private TenantBusiness tenantBusiness;

    @Override

    public FuncResultBo<UserVo> createUser(UserVo user, ApiKeyVo api_info) {

        return tenantBusiness.createUser(user, api_info);

    }

}

3、服务提供者SpringBoot启动类中加入：@EnableDubbo属性标记，例如我的：

package com.test.usersservice;

import com.alibaba.dubbo.config.spring.context.annotation.EnableDubbo;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.EnableAutoConfiguration;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.boot.autoconfigure.domain.EntityScan;

import org.springframework.context.annotation.ComponentScan;

import org.springframework.context.annotation.Configuration;

import org.springframework.data.jpa.repository.config.EnableJpaRepositories;

@Configuration

@SpringBootApplication()

@ComponentScan({"com.test"})

@EnableJpaRepositories(basePackages = {"com.test.repository"})

@EnableAutoConfiguration

@EntityScan("com.test.domain.po")
@EnableDubbo
public class UsersProviderApplication {

    public static void main(String[] args) {

        SpringApplication.run(UsersProviderApplication.class, args);

    }

}

4、消费者的application.properties中加入：

spring.application.name=dubbo-consumer-backendsync

dubbo.application.name=dubbo-consumer-backendsync

dubbo.registry.protocol=zookeeper

dubbo.registry.address=172.16.4.131:|172.16.4.132:|172.16.4.133:

dubbo.scan.base-packages=com.test.syncbackend

dubbo.protocol.name=dubbo

dubbo.protocol.port=

dubbo.consumer.timeout=

dubbo.provider.timeout=

dubbo.registry.timeout=

dubbo.consumer.retries=

dubbo.provider.retries=

dubbo.consumer.callbacks=

dubbo.provider.callbacks=

dubbo.consumer.check=true

dubbo.registry.check=false

dubbo.application.qos-enable=false

5、在消费者启动类中，可以加入EnableDubbo属性标记

@SpringBootApplication

@EnableAutoConfiguration

@EntityScan("com.test.domain.po")

@ComponentScan("com.test")

@PropertySource({"classpath:schedule.properties"})

@EnableJpaRepositories(basePackages = "com.test.repository")

@EnableScheduling

@EnableDubbo
public class BackendApplicationServer {

    public static void main(String[] args) {

        SpringApplicationBuilder springApplicationBuilder = new SpringApplicationBuilder(BackendApplicationServer.class);

        springApplicationBuilder.web(WebApplicationType.NONE);

        springApplicationBuilder.run(args);

    }

}

消费者中调用服务：

    @Reference(version = "1.0.0", timeout = 360000)

    private ITenantProvider iTenantProvider = null;

Reference属性类完整路径位于：import com.alibaba.dubbo.config.annotation.Reference;

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