Dubbo系列八：与SpringBoot整合的三种方式

不念不忘少年蓝@ 2022-04-24 19:46 229阅读 0赞

一、使用springboot配置文件  
1、导入dubbo-starter依赖。

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

2、在springboot配置文件中配置dubbo属性。

dubbo.application.name=springboot-service-provider
    	dubbo.registry.address=127.0.0.1:2181
    	dubbo.registry.protocol=zookeeper
    	
    	dubbo.protocol.name=dubbo
    	dubbo.protocol.port=20881
    	
    	dubbo.monitor.protocol=registry

3、使用@Service暴露服务。

import com.alibaba.dubbo.config.annotation.Service;
    	
    	@Service //暴露服务
    	@Component
    	public class UserServiceImpl implements UserService {
    	}

4、使用@Reference远程调用服务。

import com.alibaba.dubbo.config.annotation.Reference;
    	
    	@Service
    	public class OrderServiceImpl implements OrderService {
    	
    	    @Reference //远程调用服务
    	    UserService userService;
    	}

5、使用@EnableDubbo开启dubbo功能，用来指定包扫描规则。

@EnableDubbo //开启dubbo功能
    	@SpringBootApplication
    	public class SpringbootServiceProviderApplication {
    	
    	    public static void main(String[] args) {
    	        SpringApplication.run(SpringbootServiceProviderApplication.class, args);
    	    }
    	
    	}

或者也可以在springboot配置文件中配置包扫描规则，不用@EnableDubbo注解。

dubbo.scan.base-packages=com.atguigu.gmall

二、使用dubbo.xml配置文件  
1、导入dubbo-starter依赖。

2、使用dubbo.xml配置文件provider.xml。不需要将dubbo配置在springboot的配置文件中。不需要使用@Service注解来暴露服务。

<?xml version="1.0" encoding="UTF-8"?>
    	<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://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd
    			http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
    	
    		
    		<dubbo:application name="springboot-service-provider"></dubbo:application>
    	
    		
    		<dubbo:registry protocol="zookeeper" address="127.0.0.1:2181"></dubbo:registry>
    		
    	
    		
    		<dubbo:protocol name="dubbo" port="20881"></dubbo:protocol>
    	
    		
    		
    		<dubbo:service interface="com.atguigu.gmall.service.UserService"
    					   ref="userServiceImpl" timeout="1000">
    			
    			<dubbo:method name="getUserAddressList" timeout="1000"></dubbo:method>
    		</dubbo:service>
    	
    		
    		<dubbo:provider timeout="1000"></dubbo:provider>
    	
    		
    		<bean id="userServiceImp" class="com.atguigu.gmall.service.impl.UserServiceImpl"></bean>
    	
    		
    		<dubbo:monitor protocol="registry"></dubbo:monitor>
    		
    	</beans>

3、使用@ImportResource(locations = “classpath:provider.xml”)导入dubbo的配置文件。不需要使用@EnableDubbo注解。

@ImportResource(locations = "classpath:provider.xml")
    	@SpringBootApplication
    	public class SpringbootServiceProviderApplication {
    	
    	    public static void main(String[] args) {
    	        SpringApplication.run(SpringbootServiceProviderApplication.class, args);
    	    }
    	
    	}

三、使用注解API方式  
1、导入dubbo-starter依赖。

2、用MyDubboConfig配置类代替配置文件。

/**
    	 *dubbo配置类，用来代替配置文件中的dubbo配置
    	 */
    	@Configuration
    	public class MyDubboConfig {
    		
    		@Bean
    		public ApplicationConfig applicationConfig() {
    			ApplicationConfig applicationConfig = new ApplicationConfig();
    			applicationConfig.setName("springboot-service-provider");
    			return applicationConfig;
    		}
    		
    		//<dubbo:registry protocol="zookeeper" address="127.0.0.1:2181"></dubbo:registry>
    		@Bean
    		public RegistryConfig registryConfig() {
    			RegistryConfig registryConfig = new RegistryConfig();
    			registryConfig.setProtocol("zookeeper");
    			registryConfig.setAddress("127.0.0.1:2181");
    			return registryConfig;
    		}
    		
    		//<dubbo:protocol name="dubbo" port="20882"></dubbo:protocol>
    		@Bean
    		public ProtocolConfig protocolConfig() {
    			ProtocolConfig protocolConfig = new ProtocolConfig();
    			protocolConfig.setName("dubbo");
    			protocolConfig.setPort(20881);
    			return protocolConfig;
    		}
    		
    		/**
    		 *<dubbo:service interface="com.atguigu.gmall.service.UserService" 
    			ref="userServiceImpl01" timeout="1000" version="1.0.0">
    			<dubbo:method name="getUserAddressList" timeout="1000"></dubbo:method>
    		</dubbo:service>
    		 */
    		@Bean
    		public ServiceConfig<UserService> userServiceConfig(UserService userService){
    			ServiceConfig<UserService> serviceConfig = new ServiceConfig<>();
    			serviceConfig.setInterface(UserService.class);
    			serviceConfig.setRef(userService);
    			serviceConfig.setVersion("1.0.0");
    			
    			//配置每一个method的信息
    			MethodConfig methodConfig = new MethodConfig();
    			methodConfig.setName("getUserAddressList");
    			methodConfig.setTimeout(1000);
    			
    			//将method的设置关联到service配置中
    			List<MethodConfig> methods = new ArrayList<>();
    			methods.add(methodConfig);
    			serviceConfig.setMethods(methods);
    			
    			//ProviderConfig
    			//MonitorConfig
    			
    			return serviceConfig;
    		}
    	
    	}

3、使用@Service暴露服务。

import com.alibaba.dubbo.config.annotation.Service;
    	
    	@Service //暴露服务
    	@Component
    	public class UserServiceImpl implements UserService {
    	}

4、使用@DubboComponentScan(basePackages = “com.atguigu.gmall”) 或者@EnableDubbo(scanBasePackages = “com.atguigu.gmall”)配置要扫描的包路径。不需要使用@ImportResource(locations = “classpath:provider.xml”)。

@DubboComponentScan(basePackages = "com.atguigu.gmall")
    	@EnableDubbo(scanBasePackages = "com.atguigu.gmall")
    	@SpringBootApplication
    	public class SpringbootServiceProviderApplication {
    	
    	    public static void main(String[] args) {
    	        SpringApplication.run(SpringbootServiceProviderApplication.class, args);
    	    }
    	
    	}