摘要： 提出运用双向Web Service 的思想来实现分布式环境下信息资源的共享，并将该思想和具体的商业应用相结合，提出并实现了一个基于J2EE 架构的房地产业信息共享平台，同时辅以相应的安全解决方案，有效地解决了分布式环境下组件间的安全通信和信息资源共享问题。

关键词: 双向Web Service；WS-Security；J2EE

Abstract: The concept of bidirectional Web Service is presented, which contributes to the information share in distributed environment. After that idea combines with a specific commercial application, an information share platform concerning realty is introduced. That platform is based on J2EE architecture, accompanies with a security schema. The design and implementation of that platform provides a way by which the distributed components can communicate and share resource with each other.

Key words: Bidirectional Web Service; WS-Security; J2EE