tailieunhanh - Practical Apache Struts2 Web 2.0 Projects retail phần 4

Bây giờ bạn sẽ có mọi thứ cần thiết để bắt đầu phát triển ứng dụng: bạn biết những gì ứng dụng và quá trình phát triển sẽ được theo sau, bạn có một danh sách các trường hợp sử dụng (sẽ được mở rộng khi chúng được phát triển trong mỗi chương); và bạn đã nhìn thấy mô hình miền. | 88 CHAPTER 4 APPLICATION OVERVIEW Summary You should now have everything needed to start application development you know what the application does and which development process will be followed you have a list of use cases that will be expanded upon as they are developed in each chapter and you ve seen the domain model. The development infrastructure should also be in place. From Chapter 2 the libraries for Struts2 have been downloaded and installed in your local Maven2 repository. In this chapter you have installed a database server and executed the unit tests to test the persistence of the model. Executing the tests resulted in the downloading and installation of additional libraries for persisting the domain model and creating the necessary database structures in the database. You are now ready to dive into the application s development. CHAPTER 5 Data Manipulation To provide interactivity web applications need to provide the basic functionality of entering editing viewing or deleting user provided data that is CRUD Create Read Update Delete functionality. That functionality is the focus of this chapter. In this chapter you will learn about developing actions including an overview of the different styles that are available. You will learn how actions interact with existing domain objects how to access Spring business services how to access information from the action in the user interface and how to add internationalization validation and exception handling. Finally you will learn how to add file uploading and downloading into an application. There s a lot to cover so let s get started. The Use Case In this chapter you will be developing three use cases. The use cases are focused around the user of the web application allowing for the registration and updating of their personal information. The other common use cases that usually go along with providing registration are logging on to and logging off the application. These will be handled in Chapter 7 with the .