Consequently, how to reengineering the Legacy System to a high reliability, maintainability Scalable System that can adjust the service content conveniently and flexibly is an urgent requirement.

因此如何将旧的遗留系统再生至一个具有高可靠性、易维护性，又能方便弹性地根据企业策略而调整服务内容的可扩展性系统，是一项迫切的需求。

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Using this method, we can construct software system and satisfied requirement of maintainability. Scalability and reusability.

使其满足可维性、可扩性和可重用性的要求。

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