java-my-life opened a new issue, #15814:
URL: https://github.com/apache/dubbo/issues/15814

   ### Pre-check
   
   - [x] I am sure that all the content I provide is in English.
   
   
   ### Search before asking
   
   - [x] I had searched in the 
[issues](https://github.com/apache/dubbo/issues?q=is%3Aissue) and found no 
similar feature requirement.
   
   
   ### 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?
   
   `
   
   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:";
   }
   }
   `
   
   ### Related issues
   
   _No response_
   
   ### Are you willing to submit a pull request to fix on your own?
   
   - [ ] Yes I am willing to submit a pull request on my own!
   
   ### Code of Conduct
   
   - [x] I agree to follow this project's [Code of 
Conduct](https://www.apache.org/foundation/policies/conduct)
   


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