Model Driven Development is a promising approach to develop high quality software systems. We have proposed a method of model-driven requirements analysis using Unified Modeling Language (UML). The main feature of our method is to automatically generate a Web user interface prototype from UML requirements analysis model so that we can confirm validity of in-put/output data for each page and page transition on the system by directly operating the prototype. We have shown that the requirements analysis model has traceability to the final product by implementation experiment from the requirements analysis model. This paper proposes a mapping rule in which design information independent of each web application framework implementation is defined based on the requirements analysis model.