Download e-book for iPad: Mastering Jakarta Struts by James Goodwill

By James Goodwill

ISBN-10: 0471213020

ISBN-13: 9780471213024

Jakarta Struts undertaking offers an open resource framework for developing internet functions that leverage either the Java Servlets and JavaServer Pages applied sciences. Struts has got developer help and is instantly turning into a dominant actor within the open resource group. * James Goodwill is a well-respected authority and bestselling writer of books on Java net purposes * offers a hands-on, code-intensive educational on construction Java internet functions utilizing the Jakarta Struts Framework * significant other site offers digital models of all code examples within the e-book

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Jsp page in your browser. 10. jsp example. Implicit Objects As a JSP author, you have implicit access to certain objects that are available for use in all JSP documents. These objects are parsed by the JSP engine and inserted into the generated servlet as if you defined them yourself. Writer) that provides a stream back to the requesting client. println(), which prints text that will be displayed in the client’s browser. 8 provides an example using the implicit out object. jsp. jsp" %> Use Out <% // Print a simple message using the implicit out object.

In the next section, we take you through the steps that must be accomplished when developing a Struts application. Creating Your First Struts Application Now that you have Struts downloaded and installed, we can begin the development of our own sample Struts application. Our application consists of a simple set of JSP screens that queries a user for a stock symbol, performs a simple stock lookup, and returns the current price of the submitted stock. We will use this example to describe the steps that must be performed when creating any Struts application.

This line of code retrieves the current price from the HttpServletRequest of the submitted stock symbol. This value is placed in the HttpServletRequest by the Action object that services this request, as shown in the next section. Creating the Controller Components In a Struts application, two components make up the Controller. apache. Action classes. In most Struts applications, there is one org. apache. Action implementations. Action will process the received request. ActionServlet implementation.

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Mastering Jakarta Struts by James Goodwill

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