今天第一次用dubbo写一个提供者，消费者，记录一下

     随笔，自己记录一下。
     一、先创建一个maven项目 dubbo-pom，里面包含两个module  （dubbo-api）和（dubbo-consumer）
如下：     

dubbo-pom.xml :

    4.0.0
    pom
    
        dubbo-api
        dubbo-consumer
    
    
        org.springframework.boot
        spring-boot-parent
        2.0.3.RELEASE
    
    com.ivan.testDubbo
    dubbo-pom
    1.0-SNAPSHOT
    
        
            
                com.ivan.testDubbo
                dubbo-api
                1.0-SNAPSHOT
            
        
    

dubbo-api ：

1、dubbo-api.xml :

    
        dubbo-pom
        com.ivan.testDubbo
        1.0-SNAPSHOT
    
    4.0.0

    dubbo-api

2、在dubbo-api中新建一个接口: 

dubbo-cunsumer  ：

1、dubbo-cunsumer.xml:

    
        dubbo-pom
        com.ivan.testDubbo
        1.0-SNAPSHOT
    
    4.0.0

    dubbo-consumer

    
        
            org.springframework.boot
            spring-boot-starter
        
        
            com.alibaba.boot
            dubbo-spring-boot-starter
            0.2.0
        
        
            org.springframework.boot
            spring-boot-starter-data-jpa
        
        
            mysql
            mysql-connector-java
        
        
            com.alibaba
            druid
            1.1.10
        
        
            com.ivan.testDubbo
            dubbo-api
        
    

2、在dubbo-cunsumer中新建po类、WechatRepository  JPA接口类、springboot启动类、LoadDBTask定时推送类：


WechatLoginPo :

package com.ivan.dubbo.consumer;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
import java.io.Serializable;

/**
 * @author ivan
 * @date 2018-07-31
 */
@Entity
@Table(name = "xm_wechat_login")
public class WeChatLoginPo implements Serializable {
    @Id
    @Column(name = "appKey")
    String appKey;
    @Column(name = "appId")
    String appId;
    @Column(name = "appSecret")
    String appSecret;


    public String getAppKey() {
        return appKey;
    }

    public void setAppKey(String appKey) {
        this.appKey = appKey;
    }

    public String getAppId() {
        return appId;
    }

    public void setAppId(String appId) {
        this.appId = appId;
    }

    public String getAppSecret() {
        return appSecret;
    }

    public void setAppSecret(String appSecret) {
        this.appSecret = appSecret;
    }
}

WechatRepository :

package com.ivan.dubbo.consumer;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

/**
 * @author ivan
 * @date 2018-07-31
 */
@Repository
public interface WechatRepository extends JpaRepository {
}

LoadDBTask定时推送类：

package com.ivan.dubbo.consumer;

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

import com.ivan.dubbo.api.AppSetting;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import java.util.List;

/**
 * @author ivan
 * @date 2018-07-31
 */
@Component
public class LoadDBTask {
    @Autowired
    WechatRepository repository;

    @Reference(version = "1.0.0")
    AppSetting appSettingService;

    @Scheduled(fixedRate = 10000L)
    public void execute() {
        List all = repository.findAll();
        for (WeChatLoginPo po : all) {
            appSettingService.push(po.getAppKey(), po.getAppId(), po.getAppSecret());
        }
    }
}

springboot启动类:

package com.ivan.dubbo.consumer;

import org.springframework.boot.WebApplicationType;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.scheduling.annotation.EnableScheduling;

/**
 * @author ivan
 * @date 2018-07-31
 */
@SpringBootApplication
@EnableScheduling
public class BootStartup {
    public static void main(String[] args) throws Exception {
        new SpringApplicationBuilder(BootStartup.class).web(WebApplicationType.NONE)
                .run(args);
    }
}

还有springboot的配置文件：

dubbo.application.name=dubbo-consumer
dubbo.registry.address=zookeeper://--------------按自己实际的来
dubbo.registry.id=dubbo-consumer-register
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.url=jdbc:mysql://--------------按自己实际的来
spring.datasource.username=mysql
spring.datasource.password=password
spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
spring.jpa.hibernate.use-new-id-generator-mappings=false

到这里，我们的消费者就写好了。

提供者的代码，这边项目之前就写好了，所以dubbo的配置文件我也不太懂，今天只是加了一行提供者的代码，基本就可以运行了：

还写了一个AppSettingImp 实现类，用来调用消费者中的AppSetting接口 push()方法：

package open.xmeye.net.gateway.wechat.api.interfaces.services.user.wechat;

import open.xmeye.net.wx.api.AppSetting;
import org.springframework.stereotype.Service;

@Service("appSettingService")
public class AppSettingImp implements AppSetting {
    @Override
    public void push(String s, String s1, String s2) {
        System.out.println(s + "--" + s1 + "---" + s2);
    }
}

两个项目开启后，控制台就会每10秒打印出被推送过来的数据库中app表的信息。

主要用于巩固、梳理一下，今天同事给我讲的这些代码，理清消费者、提供者、dubbo的简单用法，以便于下次使用时能更快上手。