Abstract: DWR is a excellent framework of Ajax, which encapsulates the asynchronous communication details between browser and server. It is possible for clientside to access the Java object of serverside asynchronously, but its capability of operating DOM and building a rich UI Web interface is limited. However, EXT which is also a rich Ajax framework, is able to develop rich Web interface and makes up the deficiencies of DWR. This paper discusses the core technique of DWR and EXT, and introduces how to combine them to play the best effect, so as to improve efficiency of development and the user’s experience.

Key words: DWR(Direct Web Remoting), EXT, Ajax(Asynchronous JavaScript and XML)