SpringBoot+Dubbo项目简单搭建实现斐波那契第n项

step1 新建项目

方法1：直接在IDEA里新建如图：

方法2：在start.spring.io新建

可能有的小朋友已经发现了，第一种方式的Server URL就是第二个的网站，都是一样的

要新建两个项目，第一个项目如上图所示，第二个项目只需要将provider改为consumer
其余不变，解压后通过IDEA打开

step2 新建需要的包和接口以及实现类

provider 项目结构:

consumer 项目结构：

请注意，两个ServiceAPI在项目中的的所在位置，或者说包名要严格一致，否则后续会出问题
如果不一致，可以按照如下方式按需进行更改

xsd放到指定目录下：
C:\Users\用户名\.lemminx\cache\http\code.alibabatech.com\schema\dubbo
文件：dubbo.xsd
下载链接：
「dubbo.xsd」https://www.aliyundrive.com/s/JN8dCuDH3XF
点击链接保存，或者复制本段内容，打开「阿里云盘」APP ，无需下载极速在线查看，视频原画倍速播放。

step3 在两个项目的resource下新建配置文件

需要新建的名字为：spring-dubbo.xml

provider的该配置文件中写入：

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
	   http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
    
    <dubbo:application name="springboot-buddo-provider"/>
    
    <dubbo:protocol name="dubbo" port="20881"/>
    
    <bean id="providerImpl" class="com.springdubbo.demo.springbootdubbo.apiImpl.ProviderImpl"/>
    
    <dubbo:service interface="com.springdubbo.demo.springbootdubbo.ServiceAPI" ref="providerImpl"
                   registry="N/A"/>
beans>

consumer的该配置文件内写入：

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
	   http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
    
    <dubbo:application name="springboot-buddo-consumer"/>
    
    <dubbo:reference id="consumerImpl"
                     interface="com.springdubbo.demo.springbootdubbo.ServiceAPI"
                     url="dubbo://localhost:20881" />
beans>

step4 代码编写

导入依赖

在两个项目的pom.xml下均添加依赖：

	com.alibaba.spring.boot
	dubbo-spring-boot-starter
	2.0.0

provider

ProviderImpl
Service注解一定不要忘记加，而且一定要是dubbo的Service

package com.springdubbo.demo.springbootdubbo.apiImpl;

import com.alibaba.dubbo.config.annotation.Service;
import com.springdubbo.demo.springbootdubbo.ServiceAPI;

/**
 * @author wuyt
 * @data 2022/6/11
 * @apiNote
 */

@Service
public class ProviderImpl implements ServiceAPI {
    public String getMessage(String message) {
        return "springboot-dubbo-provider  =>>>>>" + message;
    }
    public String getTheFeibN(int n) {
        //斐波那契数列第n项的实现逻辑
    }
}

ServiceAPI

package com.springdubbo.demo.springbootdubbo;


/**
 * @author wuyt
 * @data 2022/6/11
 * @apiNote
 */

public interface ServiceAPI {
    public String getMessage(String message);
    public String getTheFeibN(int n);
}

SpringbootDubboApplication
一定要加上ImportResource注解

package com.springdubbo.demo.springbootdubbo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ImportResource;

@SpringBootApplication
@ImportResource("classpath:spring-dubbo.xml")
public class SpringbootDubboApplication {
    public static void main(String[] args) {
        SpringApplication.run(SpringbootDubboApplication.class, args);
    }
}

consumer

ServiceAPI

package com.springdubbo.demo.springbootdubbo;

/**
 * @author wuyt
 * @data 2022/6/11
 * @apiNote
 */
public interface ServiceAPI {
    public String getMessage(String message);
    public String getTheFeibN(int n);
}

SpringbootDubboApplication

package com.springdubbo.demo.springbootdubbo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.ImportResource;

@SpringBootApplication
@ImportResource("classpath:spring-dubbo.xml")
public class SpringbootDubboApplication {

	public static void main(String[] args) {
		ConfigurableApplicationContext count = SpringApplication.run(SpringbootDubboApplication.class, args);
		ServiceAPI impl = (ServiceAPI)count.getBean("consumerImpl");
//		System.out.println(impl.getMessage("Hello dubbo"));
		System.out.println(impl.getTheFeibN(10));
	}
}

端口冲突更改

可以修改provider或者是consumer其中任意一个的端口号
这里修改consumer运行的端口号：

step5 运行

首先运行provider，然后运行consumer
结果：