tailieunhanh - Apress bắt đầu ứng dụng với java google - p 12

Chạy ứng dụng nên bây giờ kết quả là một ứng dụng trông giống như hình 4-10. Khi bạn triển khai ứng dụng này để App Engine, nó cũng sẽ triển khai các yêu cầu hỗ trợ Flex file cho bạn. | CHAPTER 4 SERVLET CONTAINER AND FRAMEWORKS Running the application should now result in an application that looks like Figure 4-10. When you deploy this application to App Engine it will also deploy the required supporting Flex files for you. Summary Many popular Java libraries and frameworks run on App Engine. Google doesn t officially support these projects but it does take a community-oriented approach to compatibility. There is an active and vibrant community dedicated to interoperability of these projects. While some frameworks work with minor configuration changes others fail due to App Engine restrictions or unsupported classes. In this chapter you built three applications using various technologies and frameworks. Out of the box App Engine uses servlets and JSPs for web applications. You built a small telesales application that used JSPs for the views simple POJOs for the model and a single servlet for the controller. The application used Bigtable to store and retrieve data with the JDO API. You also created an application using the Spring MVC framework. The application was light on actual functionality but was developed to show the best practices and configuration needed to run on App Engine. Your last application was developed using Adobe Flex for the front-end and using GraniteDS for the remoting protocol. Remoting is much quicker and more efficient than using XML across the wire and allows Flex applications to directly invoke remote Java object methods and consume the return values natively. We walked through the client-side MXML and ActionScript code development as well as the server-side. We also took an in depth look at the server configuration to provide interoperability with remoting. In our next chapter you ll actually start building your demo application. We ll explore the functional as well as technical requirements and start developing the front-end using Google Web Toolkit. 88 C H A P T E R 5 Developing Your Application In the last chapter we

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