2 docs tagged with "null"

首先，我了解的知识描述了Dubbo在调用REST服务时如何处理和传递header信息。它通过RpcContextFilter将header数据提取并存储到RpcContext的attachments中，使得服务端可以通过`RpcContext.getContext().getAttachment(k

报错信息“java.lang.IllegalStateException: Extension instance (name: rest, class: interface org.apache.dubbo.rpc.Protocol) couldn't be instantiated: null”表