[GitHub] diecui1202 commented on issue #2054: anonymous inner class doesn't work in callback.

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diecui1202 commented on issue #2054: anonymous inner class doesn't work in callback.
URL: https://github.com/apache/incubator-dubbo/issues/2054#issuecomment-404779492
 
 
   @L-Angel I think you need to set the url as `dubbo://127.0.0.1:20882?hello.1.callback=true`.
   
   By the way, the callback invoke mechanism can export only one callback service provider, and then the provider side refer the callback service to invoke with sync or async. So your demo is not correct, you can only register the callback once. 
   
   Maybe this blog can help you understand the callback invoke mechanism. http://dubbo.apache.org/#/blog/dubbo-invoke.md?lang=zh-cn
   
   Feel free to reopen it.

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