[Feature] How does Dubbo achieve the effect of Spring's @ConditionalOnMissingBean?

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Apache Dubbo Component

Java SDK (apache/dubbo)

Descriptions

TestProvider has two implementation classes, TestServiceImpl and TestServiceExtImpl. I want to use @ConditionalOnMissingBean to load TestServiceImpl if the bean does not exist. How can I do this?

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public interface TestProvider { String getName(); }

@ConditionalOnMissingBean(TestProvider.class) @DubboService(interfaceClass = TestProvider.class) public class TestServiceImpl implements TestService { @Override public String getName() { return "getName:TestServiceImpl:"; } }

@DubboService(interfaceClass = TestProvider.class) public class TestServiceExtImpl extends TestServiceImpl{ @Override public String getName() { return "TestServiceExtImpl:"; } } `

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