This paper analyzes the architectures of JADE and J2EE: J2EE advances in developing enterprise-class applications, but it doesn't support Agent-oriented programming. JADE is suitable as a MAS development framework, but it considers less in maintainability, expansibility and stability. According to these, this paper proposes a MAS model -JadeEE (Java agent development framework enterprise extension) -which is based on JADE and J2EE. This model is an enterprise-class MAS application development framework which advances in stability, easily expansibility and maintainability. It is suitable for large-scale MAS development, has the same advantages as J2EE and keeps enterprise-class MAS running at an acceptable speed. This framework has been used in the development of GDSS (group decision support system) for typhoon comprehensive forecast effectively.