3.Dubbo之SpringBoot篇

约定不等于承诺〃 2022-05-16 07:19 175阅读 0赞

GitHub 详细介绍地址

[https://github.com/apache/incubator-dubbo-spring-boot-project/blob/master/README\_CN.md][https_github.com_apache_incubator-dubbo-spring-boot-project_blob_master_README_CN.md]

[https://github.com/apache/incubator-dubbo-spring-boot-project/tree/master/dubbo-spring-boot-actuator\#health-checks][https_github.com_apache_incubator-dubbo-spring-boot-project_tree_master_dubbo-spring-boot-actuator_health-checks]  //端点

[Dubbo][] Spring Boot 工程致力于简化 Dubbo RPC 框架在 [Spring Boot][] 应用场景的开发。同时也整合了 Spring Boot 特性：

*  [自动装配][Link 1] (比如： 注解驱动, 自动装配等).
 *  [Production-Ready][] (比如： 安全, 健康检查, 外部化配置等).

## 开发版本 ##

从现在开始, `dubbo-spring-boot-project` 将在每个发布中发行两个版本 :

*  [`0.2.x`][0.2.x] 是支持 Spring Boot 2.x 的主要版本（推荐，长期维护）
 *  [`0.1.x`][0.1.x] 是支持 Spring Boot 1.x 的维护版本（兼容，短期维护）

### 依赖关系 ###

<table> 
 <thead> 
  <tr> 
   <th>版本</th> 
   <th>Java</th> 
   <th>Spring Boot</th> 
   <th>Dubbo</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td><code>0.2.0</code></td> 
   <td>1.8+</td> 
   <td><code>2.0.x</code></td> 
   <td><code>2.6.2</code>+</td> 
  </tr> 
  <tr> 
   <td><code>0.1.1</code></td> 
   <td>1.7+</td> 
   <td><code>1.5.x</code></td> 
   <td><code>2.6.2</code>+</td> 
  </tr> 
 </tbody> 
</table>

## 已发行版本 ##

您可以为您的工程引入最新 `dubbo-spring-boot-starter` 的发布，增加以下依赖到工程的 `pom.xml` 文件中：

<dependency>
        <groupId>com.alibaba.boot</groupId>
        <artifactId>dubbo-spring-boot-starter</artifactId>
        <version>0.2.0</version>
    </dependency>

如果您的工程遇到了依赖问题, 请尝试添加如下 Maven 参考到工程的 `pom.xml` 文件中：

<repositories>
        <repository>
            <id>sonatype-nexus-snapshots</id>
            <url>https://oss.sonatype.org/content/repositories/snapshots</url>
            <releases>
                <enabled>false</enabled>
            </releases>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
    </repositories>

通常情况 , Dubbo 应用有两种使用场景 , 其一为 Dubbo 服务提供方 , 另外一个是 Dubbo 服务消费方，当然也允许两者混合.

# 示例演示 #

新建dubbo-spring-boot maven项目，工程结构如下：

![70][]

## dubbo-spring-boot  ##

### pom.xml配置如下： ###

springboot版本为2.0.3

<dependencyManagement>
    		<dependencies>
    			
    			<dependency>
    				<groupId>org.springframework.boot</groupId>
    				<artifactId>spring-boot-dependencies</artifactId>
    				<version>2.0.3.RELEASE</version>
    				<type>pom</type>
    				<scope>import</scope>
    			</dependency>
    		</dependencies>
    </dependencyManagement>
    <modules>
      	<module>dubbo-spring-boot-api</module>
      	<module>dubbo-spring-boot-provider</module>
      	<module>dubbo-spring-boot-consumer</module>
    </modules>

## dubbo-spring-boot-api ##

对外暴露RPC接口API模块

### pom.xml ###

### bean ###

package org.niugang.bean;
    /**
     * 
     * @ClassName:  DefaultBean   
     * @Description:默认Bean
     * @author: niugang
     * @date:   2018年8月22日 下午5:30:27   
     * @Copyright: 863263957@qq.com. All rights reserved. 
     *
     */
    public class DefaultBean {
    	private String str;
    	private String methodName;
    	private long timestamp;
    
    	public String getStr() {
    		return str;
    	}
    
    	public void setStr(String str) {
    		this.str = str;
    	}
    
    	public String getMethodName() {
    		return methodName;
    	}
    
    	public void setMethodName(String methodName) {
    		this.methodName = methodName;
    	}
    
    	public long getTimestamp() {
    		return timestamp;
    	}
    
    	public void setTimestamp(long timestamp) {
    		this.timestamp = timestamp;
    	}
    
    	@Override
    	public String toString() {
    		return "DefaultBean [str=" + str + ", methodName=" + methodName + ", timestamp=" + timestamp + "]";
    	}
    	
    
    }

### service ###

package org.niugang.service;
    
    /**
     * 
     * @ClassName:  DefaultApiService   
     * @Description:对外暴露API接口  
     * @author: niugang
     * @date:   2018年8月22日 下午5:27:21   
     * @Copyright: 863263957@qq.com. All rights reserved. 
     *
     */
    public interface DefaultApiService {
    
    	String defaultMethod(String str);
    
    }

## dubbo-spring-boot-provider ##

需要引入：dubbo-spring-boot-api

### pom.xml配置如下： ###

<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>org.niugag</groupId>
    		<artifactId>dubbo-spring-boot</artifactId>
    		<version>0.0.1-SNAPSHOT</version>
    	</parent>
    	<artifactId>dubbo-spring-boot-provider</artifactId>
    	<dependencies>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-web</artifactId>
    		</dependency>
    		
    		<dependency>
    			<groupId>com.alibaba.boot</groupId>
    			<artifactId>dubbo-spring-boot-starter</artifactId>
    			<version>0.2.0</version>
    		</dependency>
    
    		<dependency>
    			<groupId>org.niugag</groupId>
    			<artifactId>dubbo-spring-boot-api</artifactId>
    			<version>0.0.1-SNAPSHOT</version>
    		</dependency>
    
    		
    		<dependency>
    			<groupId>redis.clients</groupId>
    			<artifactId>jedis</artifactId>
    		</dependency>
    	</dependencies>
    </project>

### DefaultServiceImpl.java ###

对外暴露服务接口实现类

package org.niugang.service;
    
    import org.niugang.bean.DefaultBean;
    
    import com.alibaba.dubbo.config.annotation.Service;
    
    /**
     * 
     * @ClassName:  DefaultDemoService   
     * @Description:对外暴露接口实现类
     * @author: niugang
     * @date:   2018年8月17日 下午7:50:47   
     * @Copyright: 863263957@qq.com. All rights reserved. 
     *
     */
    //demo.service.version 在application.properties中配置过了
    @Service
    public class DefaultServiceImpl implements DefaultApiService{
    
    	public String defaultMethod(String str) {
    		DefaultBean defaultBean = new DefaultBean();
    		defaultBean.setStr(str);
    		defaultBean.setMethodName("defaultMethod");
    		defaultBean.setTimestamp(System.currentTimeMillis());
    		return defaultBean.toString();
    	}
    
    
    
    }

## ##

### application.properties ###

# springboot应用
    spring.application.name = dubbo-provider-demo
    server.port = 9090
    
    # 对外暴露服务版本
    demo.service.version = 1.0.0
    
    # 扫描带阿里注解的的类(e.g @Service , @Reference)
    dubbo.scan.basePackages  = org.niugang.service
    
    # Dubbo Config properties
    ## 应用配置
    dubbo.application.id = dubbo-provider-demo
    dubbo.application.name = dubbo-provider-demo
    
    ## 协议配置
    dubbo.protocol.id = dubbo
    dubbo.protocol.name = dubbo
    dubbo.protocol.port = 12345
    
    ##注册配置  采用redis注册中心
    dubbo.registry.id = my-registry
    dubbo.registry.address =redis://localhost:6379

### 启动类 ###

package org.niugang;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    /**
     * 
     * @ClassName:  DubboProviderApplication   
     * @Description:启动类 
     * @author: niugang
     * @date:   2018年8月17日 下午7:52:56   
     * @Copyright: 863263957@qq.com. All rights reserved. 
     *
     */
    @SpringBootApplication
    public class DubboProviderApplication {
    
    	public static void main(String[] args) {
    		SpringApplication.run(DubboProviderApplication.class, args); 
    	}
    
    }

## dubbo-spring-boot-consumer ##

需要引入：dubbo-spring-boot-api

### pom.xml配置如下 ###

<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>org.niugag</groupId>
    		<artifactId>dubbo-spring-boot</artifactId>
    		<version>0.0.1-SNAPSHOT</version>
    	</parent>
    	<artifactId>dubbo-spring-boot-consumer</artifactId>
    	<dependencies>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-web</artifactId>
    		</dependency>
    		<dependency>
    			<groupId>com.alibaba.boot</groupId>
    			<artifactId>dubbo-spring-boot-starter</artifactId>
    			<version>0.2.0</version>
    		</dependency>
    		
    		<dependency>
    			<groupId>redis.clients</groupId>
    			<artifactId>jedis</artifactId>
    		</dependency>
    		
    		<dependency>
    			<groupId>org.niugag</groupId>
    			<artifactId>dubbo-spring-boot-api</artifactId>
    			<version>0.0.1-SNAPSHOT</version>
    		</dependency>
    
    	</dependencies>
    </project>

### DemoConsumerController.java ###

web层调用服务提供者对我暴露的rpc接口

package org.niugang.controller;
    
    import org.niugang.service.DefaultApiService;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.RestController;
    
    import com.alibaba.dubbo.config.annotation.Reference;
    
    /**
     * 
     * @ClassName: DemoConsumerController
     * @Description:web调用服务提供者对外暴露的rpc接口
     * @author: niugang
     * @date: 2018年8月18日 上午9:41:30
     * @Copyright: 863263957@qq.com. All rights reserved.
     *
     */
    @RestController
    public class DemoConsumerController {
    
    	/**
    	 * 引入服务提供者
    	 */
    	// com.alibaba.dubbo.config.annotation.Reference
    	@Reference
    	private DefaultApiService demoService;
    
    	@RequestMapping("/sayHello")
    	public String sayHello(@RequestParam String name) {
    		return demoService.defaultMethod(name);
    	}
    
    }

### application.properties ###

#springboot应用名
    spring.application.name = dubbo-consumer-demo
    server.port = 8080
    
    # 服务版本
    demo.service.version = 1.0.0
    
    # Dubbo Config properties
    ## 应用配置
    dubbo.application.id = dubbo-consumer-demo
    dubbo.application.name = dubbo-consumer-demo
    
    ## 协议配置  Bean
    dubbo.protocol.id = dubbo
    dubbo.protocol.name = dubbo
    dubbo.protocol.port = 12345
    
    #dubbo 2.6.2版本需要写注册中心配置
    dubbo.registry.address =redis://localhost:6379

### 启动类 ###

package org.niugang;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    /**
     * 
     * @ClassName:  DubboConsumerApplication   
     * @Description:消费者
     * @author: niugang
     * @date:   2018年8月17日 下午8:50:33   
     * @Copyright: 863263957@qq.com. All rights reserved. 
     *
     */
    @SpringBootApplication
    public class DubboConsumerApplication {
    
    	public static void main(String[] args) {
    		SpringApplication.run(DubboConsumerApplication.class, args); 
    	}
    
    }

启动服务提供者，服务消费者

访问消费者web接口。

![70 1][]

源码地址：[https://gitee.com/niugangxy/dubbo][https_gitee.com_niugangxy_dubbo]

**微信公众号**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70][]

[https_github.com_apache_incubator-dubbo-spring-boot-project_blob_master_README_CN.md]: https://github.com/apache/incubator-dubbo-spring-boot-project/blob/master/README_CN.md
[https_github.com_apache_incubator-dubbo-spring-boot-project_tree_master_dubbo-spring-boot-actuator_health-checks]: https://github.com/apache/incubator-dubbo-spring-boot-project/tree/master/dubbo-spring-boot-actuator#health-checks
[Dubbo]: https://github.com/alibaba/dubbo
[Spring Boot]: https://github.com/spring-projects/spring-boot/
[Link 1]: https://github.com/apache/incubator-dubbo-spring-boot-project/blob/master/dubbo-spring-boot-autoconfigure
[Production-Ready]: https://github.com/apache/incubator-dubbo-spring-boot-project/blob/master/dubbo-spring-boot-actuator
[0.2.x]: https://github.com/apache/incubator-dubbo-spring-boot-project
[0.1.x]: https://github.com/apache/incubator-dubbo-spring-boot-project/tree/0.1.x
[70]: /images/20220516/e5b728d122104b90bcd5a890038ff756.png
[70 1]: /images/20220516/d93d749d8ef7489aa3492824bb4b4cf2.png
[https_gitee.com_niugangxy_dubbo]: https://gitee.com/niugangxy/dubbo
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70]: /images/20220516/e02758469c0644d3a16e09d8c5b5eca6.png