TAILIEUCHUNG - Building Java Enterprise Applications Volume I: Architecture phần 8

Tham khảo tài liệu 'building java enterprise applications volume i: architecture phần 8', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Building Java Enterprise Applications Volume I Architecture standard programming techniques using documented APIs are in play. Again some rather simple and logical decisions early on can greatly increase the flexibility of your applications in the long run. Decision Point I don t want to leave you completely on your own in terms of what to program next. Obviously you need some sort of user interface on top of the infrastructure put together so far and of course it needs to fit in with the architecture described up to this point. The two most common application front-end paradigms as of this writing are the standard web application servlets JSP and the web services framework SOAP UDDI WSDL . I ll briefly touch on each. This will also give you some insight as to what the next volumes will cover. Web Applications A web application in the context of this book is meant to refer to a J2EE-centric application programming model. This means that servlets are used for application logic and either provide presentation on their own or defer to some other presentation technology. Popular options in this area are JavaServer Pages JSP frameworks like Apache Turbine http turbine and Apache Cocoon http cocoon . While these are just a few of many examples for handling content and presentation they all build on the J2EE core APIs usually servlets and well-understood Java and XML APIs like SAX DOM and JDOM. If you don t know what type of front-end you want to provide to the end user this is almost certainly the best choice. It is the most common and as a result you can easily find resources on the relevant technologies. Books like Java Servlet Programming and JavaServer Pages both from O Reilly provide good introductions to these APIs and will get you quickly up and running. Additionally building web services and other front-ends can most easily be done upon an existing web application. And obviously a web application provides access .

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