文件名称:
Expert Spring MVC and Web Flows
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文件大小: 4mb
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上传时间: 2010-04-04
详细说明： 这是spring开始的一段，我给粘过来了 I can still remember the time I first realized what the Spring Framework was and how it could help me. I was tasked with building a web application that will register new businesses with the local government, and being a Java shop this meant the standard set of frameworks at the time: Struts, JavaServer Pages (JSP), and Hibernate. Having built many applications with these technologies, we dove right into development.When beginning a new application, I always want to improve a few things from the last product development cycle. This time around, it was time to get serious about two things, unit testing and good object-oriented design. Sure, I had written plenty of unit tests before, but I had never begun a project by writing tests first. And although I’ve been studying and developing with OOP for many years now, I continue to learn new techniques that help the design of the application retain sustainability in the face of change. So, off we went developing the application, writing tests for the domain model, creating a service layer (a façade for the web layer to integrate with), and beginning the build-out of the Struts layer. Each layer in the system seemed to progress nicely, but that’s exactly when we ran into trouble. As integration between layers began, we noticed that it became harder and harder to write good tests for the system. The application was using the Service Locator pattern to integrate the service layer and the web layers together. This pattern was implemented using a static lookup, which proved impossible to change for our unit tests. The question soon became, “How do we integrate these components such that both writing tests and running in production is simple and efficient?” ...展开收缩
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