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To satisfy current requirements of Web applications and solve the existing problems in Web application development, an extended MVC-based Web application framework based on XML on J2EE platform is put forward that is more flexible, expansible and maintainable. According to the characteristics of structured and unstructured machine tool product data in Web based distributed cooperative design environment, the definition and model of an XML- based document tree is presented, which is able to unify the representation of product design and manufacturing information. An XML style interface and mapping interface mechanism are discussed to realize interactive information transaction across heterogeneous platforms. A machine tool distributed cooperative design system is developed to validate the extended MVC-based web application framework and XML interoperable information model. The result shows their effectiveness.