[GitHub] lexburner edited a comment on issue #2478: 2.5.3版本。出现No such extension com.alibaba.dubbo.container.Container by name spring

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lexburner edited a comment on issue #2478: 2.5.3版本。出现No such extension com.alibaba.dubbo.container.Container by name spring
URL: https://github.com/apache/incubator-dubbo/issues/2478#issuecomment-420490326
 
 
   step to reproduce @Chanel-Li 's problem：
   1. clone the latest version code dubbo-2.7.0
   2. run `org.apache.dubbo.container.Main` throw above exception.
   
   This is not a bug. `org.apache.dubbo.container.Main` will default loads `spring container`,while the source code of moudle `dubbo-container-api` doesn't add dependency of `dubbo-container-spring`, so `ExtensionLoader.getExtensionLoader(Container.class).getExtension("spring")` will throw exception.
   
   suggestion:
   
   1. You shouldn't run `org.apache.dubbo.container.Main` directly from source code.More details you can browse the doc [service-container.html](https://dubbo.apache.org/zh-cn/docs/user/demos/service-container.html)
   2. If you want to unit test 'spring-container', ask `org.apache.dubbo.container.spring.SpringContainerTest` for help.
   
   The simplest way to deal with your problem.Add below dependency to your project
   ```
           <dependency>
               <groupId>org.apache.dubbo</groupId>
               <artifactId>dubbo-container-spring</artifactId>
               <version>${project.parent.version}</version>
           </dependency>
   ```
   and the try again.

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