The Struts Framework: Practical Guide for Java Programmers by Sue Spielman
By Sue Spielman
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Extra resources for The Struts Framework: Practical Guide for Java Programmers (The Practical Guides)
1 in Chapter 11, but a simple introduction to logging is included here. log() method. Next, depending on the results of our business logic, we might or might not need to save information into the server-side objects. This information is used by the next page or JSP. Usually, something is set in either the request or the session scope. getId()); 2 The dot notation used when new’ing the ActionError is referencing the key from the ApplicationResource ﬁle. We will discuss this in Chapter 9. 38 Chapter 4: Creating and Building Actions After we’ve completed all the activities in our Action, the last step is to determine what the next page—or the forward—should be.
The redirect property is set to true if the ActionServlet calls HttpServletResponse. sendRedirect() on the associated path. If not speciﬁed, redirect will be false. Why and when should you use a redirect? If you have ﬁnished handling a form submission in an Action and then forward to the next page, you might notice that the URL displayed in the web browser is the path to the previous action even though you are on a new JSP. If the previous page had a form on it and you click the browser’s refresh button, you will be prompted to resubmit the form, even if the new JSP doesn’t have a form on it.
2. Deﬁne and develop each screen requirement in terms of the data collected and/or displayed. 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.