By Sue Spielman
"I heartily suggest this ebook. for the reason that an early replica of Sue's manuscript hit my table, it has no longer left my part and is now good thumbed and amassing espresso stains from typical use." Simon Chappell - Java Programming expert with a Fortune a hundred company." "Sue Spielman launches the aspiring Java J2EE programmer on an exhilarating exploration of Struts dependent MVC structure and applies this data in making a state-of-the-art internet software. No twenty first Century net software program engineering library is whole with no this significant book." David McClure, web know-how workforce, constancy Investments
Struts is an open-source framework that integrates with average Java applied sciences and we could builders construct internet purposes quick and successfully. In a lot an analogous manner that Java has overtaken C++, Struts is easily poised to turn into the framework for net program improvement as a result of its skill to deal with the categories of matters engineers face whilst development large-scale net purposes.
The Struts Framework: sensible advisor for Java Programmers meets the wishes of this huge audience--estimated at the present time at 2.5 million Java programmers and turning out to be. It offers the systematic exploration required by means of beginners in addition to the step by step guideline for more matured readers desirous to take advantage of Struts to the fullest. dedicated to the newest model of the framework (v. 1.1) and vividly illustrated with a radical pattern software all through, this ebook is an important source for all programmers who are looking to be a part of the following degree within the evolution of the internet.
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Extra resources for The Struts Framework Practical Guide for Java Programmers
3. Determine all the access paths for each screen. 4. Deﬁne the ActionMappings that correlate to the application business logic. 5. Create the ActionForms with deﬁned properties from the screen requirements (this can include the validation portions as well). 6. Develop Actions to be called by the ActionMappings that, in turn, call the appropriate helpers and forward to JSPs. 7. ). 8. Create JSPs to match the workﬂows using the ActionMappings. 9. xml. 10. Build, test, deploy. We identiﬁed our sample application as the CD Manager that we’ll use throughout the rest of the book, and we started planning our development of that application.
All the following examples are Actions: logging on, performing a search, displaying a listing, and logging oﬀ. Think of an Action as the pipe, or adapter, between the contents of an incoming HTTP request and the corresponding business logic that should be executed to process the request. xml ﬁle, create an instance of the Action (if necessary), and then call the execute() method of the Action. It’s important to mention that when programming Actions, they must be thread-safe. Not making them thread-safe is probably one of the most common errors programmers working with Action classes make.
However, because we are dealing with the LogonAction in this case, we don’t want to check for a valid session because we haven’t set it yet. If it is necessary to access various scoped objects, it’s done now. For example, the Application object is in the ServletContext and can be accessed from inside an Action via the ServletConfig or HttpSession. getAttribute("attribute_name"); You can also just deﬁne a convenient getter method in your abstract base class for this type of requirement. The next step typically taken is to retrieve any information, or properties, necessary from the ActionForm.