Detailed explanation of annotated Dubbo service configuration examples

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Annotation-based Dubbo service configuration can greatly reduce the amount of Service configuration in the dubbo xml configuration file. The main steps are as follows:

1. Service provider

1. Add Dubbo annotation scanning in Dubbo configuration file

<!-- 开启dubbo注解支持 -->
<!-- 扫描注解包路径，多个包用逗号分隔，不填pacakge表示扫描当前ApplicationContext中所有的类 -->
<dubbo:annotation package="com.bounter" />

2. Add Dubbo Service annotation to the Service implementation class

import com.alibaba.dubbo.config.annotation.Service;

@Servicepublic class DubboServiceImpl implements DubboService {
}

2. Service consumer

1. Add Dubbo annotation scanning in Dubbo configuration file (same as service provider)

<!-- 开启dubbo注解支持 -->
<!-- 扫描注解包路径，多个包用逗号分隔，不填pacakge表示扫描当前ApplicationContext中所有的类 -->
<dubbo:annotation package="com.bounter" />

2. Introduce dubbo configuration into Spring MVC configuration to solve the problem of dubbo annotation incompatibility ( is very important, otherwise it is introduced into the controller The service will report a null pointer)

<!-- 引入dubbo配置，解决dubbo注解不兼容问题 -->
<import resource="classpath:spring-dubbo.xml"/>

3. After the Dubbo service is introduced into the controller, it can be used

@Referenceprivate DubboService dubboService;

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