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LazyValidatorForm has all the shortcomings of conventional dynamic forms, plus one more: you ve lost the firewalling property of conventional dynamic forms, as I ll explain shortly. If form data is submitted to Struts with more properties compared to the declared ones (a larger array data or new properties), then Struts throws an exception. This doesn t happen with LazyValidatorForm. This means that a malicious user can craft an HTML page filled with huge amounts of fake data and submit this to your webapp, and it will be accepted. The problem may be serious if your code unthinkingly dumps this form data directly into a database. If the data takes time to be processed, your webapp could slow down. In an extreme scenario, your webapp could crash.

You need to obtain an LCD Display that uses the HD44780 driver. There are many available and they come in all kinds of colors. As an amateur astronomer, I particularly like the red on black displays (red text on a black background) because they preserve your night vision if used in astronomy based projects. You can choose another color text and background but your display must have a backlight and be able to display sixteen columns and two rows of characters (often referred to as 16 2 LCD displays).

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This problem doesn t happen with conventional dynamic forms because Struts knows exactly what properties to expect, as well as the length of those properties except perhaps for List- or Map-backed properties, but you can avoid using them in the first place. With LazyValidatorForm, you don t have the option not to use these. One way to mitigate this problem is to transfer data to JavaBean classes from a LazyValidatorForm instance, using the BeanUtils technique described earlier. This way, only legitimate data gets processed. Of course, this means that you can t accept mapped or List-backed indexed properties, since doing so would allow a malicious user to give you huge lists of fake data.

The Hidden Power of BeanValidatorForm (Struts 1.2.6+)

Governance of Risk and Compliance training. Collectively, these activities encompass a typical risk-management profile that seeks to identify and optimize ways to address compliance risks. Management of compliance risk has taken on a much greater role since the historic corporate failures that resulted in the enactment of the SarbanesOxley Act (SOX) of 2002. The Federal Sentencing Guidelines in U.S.S.G. Section 8B2.1 require that, to have an effective compliance and ethics program, an organization must: Exercise due diligence to prevent and detect criminal conduct and Otherwise promote an organizational culture that encourages ethical conduct and commitment to compliance with the law. 1 The Guidelines further provide that: Such compliance and ethics program shall be reasonably designed, implemented, and enforced so that the program is generally effective in preventing and detecting criminal conduct. 2 Partially in response to these Guidelines, as well as other guidance relating to the prosecution of organizations, companies have been putting a lot of time and resources into sustaining this function and creating a compliance view of risk.

Current Limiting Resistor (Backlight) Current Limiting Resistor (Contrast)

The base class of LazyValidatorForm is BeanValidatorForm, which also has interesting uses of its own. This class is a base class of ValidatorForm, and therefore uses the Validator framework for simple validation. The interesting thing about BeanValidatorForm is that it accepts a JavaBean in its constructor, automatically populating this JavaBean with the user s form data. Since 1.2.6, if the type attribute of the <form-bean> isn t a subclass of ActionForm, the instantiated object is automatically wrapped in an instance of BeanValidatorForm by Struts behind the scenes. To see what this means practically, suppose you were to redo Lab 6 using BeanValidatorForm implicitly. Instead of creating a ContactForm class, you d first declare the form bean as shown here: <form-bean name="ContactFormBean" type="net.thinksquared.lilldep.database.Contact"/> Note that the class referred to by type is not an ActionForm subclass. Struts (since 1.2.6) will automatically instantiate the Contact and insert it into the constructor of BeanValidatorForm. This is an ActionForm subclass, and will automatically populate the fields of Contact. To retrieve the Contact instance in your Action, you simply call BeanValidatorForm bForm = (BeanValidatorForm) form; Contact contact = (Contact) bForm.getInstance(); Easy! Of course, remember that this is only available in 1.2.6 and above.

The circuit for Project 23 is quite simple. Find the datasheet for the LCD you are using. The following pins (see Table 8-1) from the Arduino, +5v, and Ground need to go to the LCD. Table 8-1. Pins to use for the LCD

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