Dubbo在Spring和Spring Boot中的使用

一、在Spring中使用Dubbo

1、Maven依赖

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>dubbo</artifactId>
    <version>2.5.3.6</version>
    <exclusions>
        <exclusion>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
        </exclusion>
        <exclusion>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
        </exclusion>
        <exclusion>
            <groupId>org.springframework</groupId>
            <artifactId>spring</artifactId>
        </exclusion>
        <exclusion>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>com.github.sgroschupf</groupId>
    <artifactId>zkclient</artifactId>
    <version>0.1</version>
</dependency>

2、DUBBO生产者注册到zookeeper的xml配置方式

<?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://code.alibabatech.com/schema/dubbo
        http://code.alibabatech.com/schema/dubbo/dubbo.xsd
        ">
 <!-- 具体的实现bean -->
 <bean id="demoService"
  class="com.unj.dubbotest.provider.impl.DemoServiceImpl" />
 <!-- 提供方应用信息，用于计算依赖关系 -->
 <dubbo:application name="xixi_provider" />
 <!-- 使用multicast广播注册中心暴露服务地址 
  <dubbo:registry address="multicast://224.5.6.7:1234" />-->
 <!-- 使用zookeeper注册中心暴露服务地址 -->
 <dubbo:registry address="zookeeper://127.0.0.1:2181" />
 <!-- 用dubbo协议在20880端口暴露服务 -->
 <dubbo:protocol name="dubbo" port="20880" />
 <!-- 声明需要暴露的服务接口 -->
 <dubbo:service interface="com.unj.dubbotest.provider.DemoService"  version="mys"
  ref="demoService" />
</beans>

3、DUBBO消费者注册到zookeeper的xml配置方式

 <?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://code.alibabatech.com/schema/dubbo  
        http://code.alibabatech.com/schema/dubbo/dubbo.xsd  
        ">
 <!-- 消费者应用信息，用于提供依赖关系 -->
 <dubbo:application name="consumer-of-helloworld-app" />
 <!-- 注册地址，用于消费者寻找服务 -->
 <dubbo:registry protocol="zookeeper" address="127.0.0.1:2181,10.128.3.33:2181" />
 <dubbo:consumer timeout="5000" />
 <!-- 引用的服务 -->
 <dubbo:reference id="demoService"interface="com.unj.dubbotest.provider.DemoService" version="mys" />
</beans>

二、在Spring Boot中使用Dubbo

在Spring Boot中使用Dubbo，不需要使用xml的方式来配置生产者和消费者，需要使用@Bean注解的方式来进行配置。

1、Maven依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <version>1.2.5.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter</artifactId>
    <version>1.2.5.RELEASE</version>
</dependency>
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>dubbo</artifactId>
    <version>2.5.3.6</version>
    <exclusions>
        <exclusion>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
        </exclusion>
        <exclusion>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
        </exclusion>
        <exclusion>
            <groupId>org.springframework</groupId>
            <artifactId>spring</artifactId>
        </exclusion>
        <exclusion>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>com.github.sgroschupf</groupId>
    <artifactId>zkclient</artifactId>
    <version>0.1</version>
</dependency>

2、Dubbo基础配置

public class DubboBaseConfig {

    @Bean
    public RegistryConfig registry() {
        RegistryConfig registryConfig = new RegistryConfig();
        registryConfig.setAddress("127.0.0.1:2181");
        registryConfig.setProtocol("zookeeper");
        return registryConfig;
    }
    
    @Bean
    public ApplicationConfig application() {
        ApplicationConfig applicationConfig = new ApplicationConfig();
        applicationConfig.setName("testApp");
        return applicationConfig;
    }
    
    @Bean
    public MonitorConfig monitorConfig() {
        MonitorConfig mc = new MonitorConfig();
        mc.setProtocol("registry");
        return mc;
    }
    
    @Bean
    public ReferenceConfig referenceConfig() {
        ReferenceConfig rc = new ReferenceConfig();
        rc.setMonitor(monitorConfig());
        return rc;
    }
    
    @Bean
    public ProtocolConfig protocol() {
        ProtocolConfig protocolConfig = new ProtocolConfig();
        protocolConfig.setPort(20880);
        return protocolConfig;
    }
    
    @Bean
    public ProviderConfig provider() {
        ProviderConfig providerConfig = new ProviderConfig();
        providerConfig.setMonitor(monitorConfig());
        return providerConfig;
    }
    
    
}

3、Dubbo生产者配置，需要继承Dubbo基础配置

@Configuration
public class ExportServiceConfig extends DubboBaseConfig {
    
    @Bean
    public ServiceBean<Person> personServiceExport(Person person) {
        ServiceBean<Person> serviceBean = new ServiceBean<Person>();
        serviceBean.setProxy("javassist");
        serviceBean.setVersion("myversion");
        serviceBean.setInterface(Person.class.getName());
        serviceBean.setRef(person);
        serviceBean.setTimeout(5000);
        serviceBean.setRetries(3);
        return serviceBean;
    }

}

4、Dubbo消费者配置，需要继承Dubbo基础配置

@Configuration
public class ReferenceConfig extends DubboBaseConfig {

    @Bean
    public ReferenceBean<Person> person() {
        ReferenceBean<Person> ref = new ReferenceBean<>();
        ref.setVersion("myversion");
        ref.setInterface(Person.class);
        ref.setTimeout(5000);
        ref.setRetries(3);
        ref.setCheck(false);
        return ref;
    }
}

5、直接从Spring容器中拿去Person接口即可。