Processing HTML Form Date

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Can a JSP page process HTML FORM data?

✍: FYICENTER.com

Yes. However, unlike servlets, you are not required to implement HTTP-protocol specific methods like doGet() or doPost() within your JSP page. You can obtain the data for the FORM input elements via the request implicit object within a scriptlet or expression as.

2007-04-03, 5273👍, 0💬

💬 2023-12-20 Bhara: Nice

Stoping JSP Execution in the Middle of a JSP Page
Can I stop JSP execution while in the midst of processing a request? Yes. Preemptive termination of request processing on an error condition is a good way to maximize the throughput of a high-volume JSP engine. The trick (asuming Java is your scripting language) is to use the return statement when y... 2007-04-03, 6187👍, 0💬

Overriding JSP Server Generated Servlet Subclass
How do I have the JSP-generated servlet subclass be my own custom servlet class, instead of the default? One should be very careful when having JSP pages extend custom servlet classes as opposed to the default one generated by the JSP engine. In doing so, you may lose out on any advanced optimizatio... 2007-04-03, 6055👍, 0💬

Setting Session Timeout Period
Is there a way I can set the inactivity lease period on a per-session basis? Typically, a default inactivity lease period for all sessions is set within your JSPengine admin screen or associated properties file. However, if your JSP engine supports the Servlet 2.1 API, you can manage the inactivity ... 2007-04-03, 6025👍, 0💬

Servlet Communicates with JSP Pages
How does a servlet communicate with a JSP page? The following code snippet shows how a servlet instantiates a bean and initializes it with FORM data posted by a browser. The bean is then placed into the request, and the call is then forwarded to the JSP page, Bean1.jsp, by means of a request dispatc... 2007-04-03, 6012👍, 0💬

Referencing "this" variable in JSP Pages
Is there a way to reference the "this" variable within a JSP page? Yes, there is. Under JSP 1.0, the page implicit object is equivalent to "this", and returns a reference to the servlet generated by the JSP page. 2007-04-03, 5957👍, 0💬

Sharing an HttpSession between JSP and EJB
Is it possible to share an HttpSession between a JSP and EJB? What happens when I change a value in the HttpSession from inside an EJB? You can pass the HttpSession as parameter to an EJB method, only if all objects in session are serializable. This has to be consider as "passed-by-value", that mean... 2007-04-03, 5761👍, 0💬

Declaring Methods within JSP Pages
How can I declare methods within my JSP page? You can declare methods for use within your JSP page as declarations. The methods can then be invoked within any other methods you declare, or within JSP scriptlets and expressions. Do note that you do not have direct access to any of the JSP implicit ob... 2007-04-03, 5752👍, 0💬

Handling Run-Time Exceptions
How does JSP handle run-time exceptions? You can use the errorPage attribute of the page directive to have uncaught runtime exceptions automatically forwarded to an error processing page. For example: redirects the browser to the JSP page error.jsp if an uncaught exception is encountered during requ... 2007-04-03, 5595👍, 0💬

Browser Redirect in JSP Pages
How do I perform browser redirection from a JSP page? You can use the response implicit object to redirect the browser to a different resource, as: response.sendRedirect("http:// interview.fyicenter.com/"); 2007-04-03, 5529👍, 0💬

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