Design And Realization Of Defect Trace System Based On Struts Architecture

Because the strong advantage behaving in developing of MVC mode, MVC mode is gradually introduced in J2EE system, and when J2EE carries on the interactive application development (especially Web application development), MVC mode has becomeed a very important mode. MVC is a kind of design mode, it defines and "book " or " notice " agreement, separate the view and model, make system very flexible to develop , at the same time raise the reusage of system design. The view should guarantee to reflect the state of models, Once the datas of the model change, the model will notify relevant views, then each view correspondingly gets one's own chance to refresh oneself. This kind of method can offer a lot of different form of expression for a model, and can establish a new view in a mode not needing to rewrite models.Struts offers a common architecture for Web application, enable developers to concentrate energy on how to solve the real business problem to better adapt to users' actual demand. In fact Struts is a MVC architecture realizing on the basis of JSP Model2. In Struts architecture, the model is formed by realizing logic business JavaBean or EJB package, the view is formed by a group of JSP files, the controller is realized by ActionServlet and Action.The defect trace system can find, write down and follow the defect of the products, make a contribution to product quality control. Because the defect report offers the true evidence of a question of the products, the developer not only can see, but also at all levels administration can understand and hold. On the function, defect trace system can offer tables that let us report and manage specifical wrong, a set of memory reports and charts that lets us analyse, control and in various forms output wrong data, and for in order wrong management, offer a special-purpose work flowing or life cycle.This text directs against the requisition for flexibility , stability and expansibility of defect trace system , adopt and follow the Object-Oriented design method that MVC design pattern, collect the key function of the defect trace system , derive out the labelled by defect state defect life cycle that is all defect condition in the project; According to the height limit to role' s authority of the defect trace system , different authority inspection has carried on the defect trace system ;Based on the Struts Framework, have designed three layers of systems architecture, in order to reduce the coupling layers , layer have a corresponding regulation to the call of interface and the trasfer...