Implementation of Telecom CRM Data Persistent Layer Based on JavaEE

Combined with the practical requirement in the informatization process of the China Telecom Commission, JavaEE architecture is introduced, and a method for developing large scale telecom Custom Relationship Management(CRM) data persistent layer on the platform of JavaEE. This paper also analyzes the application of fa?ade pattern, VO pattern and DAO pattern in the Spring JDBC framework, which implements the loose coupling in persistent layer. The whole system has better performance of stability, flexibility and extension.