[GitHub] [dubbo] AlbumenJ commented on issue #10765: dubbo.consumer.tag not work on 3.x

[GitBox <gi...@apache.org>]

AlbumenJ commented on issue #10765:
URL: https://github.com/apache/dubbo/issues/10765#issuecomment-1297857126

   > 但是鉴于您提了该issue，所以我猜Dubbo也许在此基础之上做了更进一步的工作，即使不用显式地写<dubbo:consumer tag="${key}">也能让 dubbo.consumer.tag生效。我的理解对吗？
   
   是的
   
   > 按照该思路，我在源码中看到Dubbo在内部用ModuleEnvironment的appConfigMap给各种XxxConfig赋值，这就使得即使不写<dubbo:consumer tag="${key}">也能让dubbo.consumer.tag生效。ModuleEnvironment是在Spring启动中DubboInfraBeanRegisterPostProcessor#postProcessBeanFactory()方法执行的时候构建了appConfigMap。
   
   目前的逻辑只是起到了一个 placeholder 覆盖的作用，但是在 Dubbo 里面可以通过特定格式的配置直接修改（参考 https://dubbo.apache.org/zh/docs3-v2/java-sdk/reference-manual/config/principle/ 以及各个 `XxxConfig` 的 `refresh` 方法）。


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