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();
         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。