Dubbo的使用入门

一、包引入

1、父模块pom.xml中加入依赖：

  　　　　
        <dependency>
            <groupId>com.alibaba.bootgroupId>
            <artifactId>dubbo-spring-boot-starterartifactId>
            <version>0.2.0version>
        dependency>

 

我这里还引入了SpringBoot和一些常用组件 

    
    <parent>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-parentartifactId>
        <version>2.0.4.RELEASEversion>
    parent>

    <dependencies>
        
        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starterartifactId>
        dependency>
        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
        dependency>

        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-devtoolsartifactId>
            <version>2.0.4.RELEASEversion>
        dependency>
        <dependency>
            <groupId>org.projectlombokgroupId>
            <artifactId>lombokartifactId>
            <version>1.16.22version>
        dependency>
        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-data-jpaartifactId>
            <version>2.0.4.RELEASEversion>
        dependency>
        
        <dependency>
            <groupId>com.alibaba.bootgroupId>
            <artifactId>dubbo-spring-boot-starterartifactId>
            <version>0.2.0version>
        dependency>
        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>
        
        <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>fastjsonartifactId>
            <version>1.2.51version>
        dependency>
    dependencies>

 

 

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

server.port=8084
spring.application.name=dubbo-provider-users
dubbo.application.name=dubbo-provider-users
dubbo.registry.protocol=zookeeper
dubbo.registry.address=172.16.4.132:2181|172.16.4.131:2181|172.16.4.133:2181
dubbo.protocol.name=dubbo
dubbo.protocol.port=20884
dubbo.scan.base-packages=com.yungoal.usersservice
dubbo.consumer.timeout=3600000
dubbo.provider.timeout=3600000
dubbo.registry.timeout=3600000
dubbo.consumer.retries=5
dubbo.provider.retries=5
dubbo.consumer.callbacks=3600000
dubbo.provider.callbacks=3600000
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 TenantProvider implements ITenantProvider {

    @Resource
    private TenantBusiness tenantBusiness;

    @Override
    public FuncResultBo createCcUser(CcUserVo user, ApiKeyVo api_info) {
        return tenantBusiness.createCcUser(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.yungoal.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.yungoal"})
@EnableJpaRepositories(basePackages = {"com.yungoal.repository"})
@EnableAutoConfiguration
@EntityScan("com.yungoal.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=172.16.4.131:2181|172.16.4.132:2181|172.16.4.133:2181
dubbo.scan.base-packages=com.yungoal.syncbackend
dubbo.protocol.name=dubbo
dubbo.protocol.port=20880
dubbo.consumer.timeout=3600000
dubbo.provider.timeout=3600000
dubbo.registry.timeout=3600000
dubbo.consumer.retries=5
dubbo.provider.retries=5
dubbo.consumer.callbacks=3600000
dubbo.provider.callbacks=3600000
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.yungoal.domain.po")
@ComponentScan("com.yungoal")
@PropertySource({"classpath:schedule.properties"})
@EnableJpaRepositories(basePackages = "com.yungoal.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;

 

转载于:https://www.cnblogs.com/songxingzhu/p/9915488.html