Message handlers provide additional message-handling facilities to web service endpoints (both client and server) as extensions to the basic service implementation logic.

消息处理程序向Web服务端点(客户机和服务器)提供了附加的消息处理功能，作为对基本服务实现逻辑的扩展。

youdao

Message handlers provide additional message-handling facilities to web service endpoints (both client and server) as extensions to the basic service implementation logic.

消息处理程序向Web服务端点(客户机和服务器)提供了附加的消息处理功能，作为对基本服务实现逻辑的扩展。

youdao