Jsp code for validating username and password aperture not updating
For running this example you have to follow these steps: 1. Compile this java file and place the Validation.class file into classes folder. Instead of as this lets the browser (and the user) know that the contents of that field need to be secured.The password won't appear on the screen as you type and most browsers also won't 'remember' the values entered in fields as they do with other form elements.
Output: If wrong input is given then message will flash "You are not a valid user".One popular approach is to install Fail2Ban to monitor log files and lock out repeat offendors.Of course that only works if your login system reports failed login attempts to a system log file.Remember that, as Java Script isn't available in all browsers, you should also use server-side scripting to validate all data before recording it in a database or elsewhere.
You might also want to spice up your forms using HTML5 Form Validation as we've done further down the page.For security a password should never be displayed in HTML or sent by email.If you're concerned about security you should have some policy on what constitutes a valid password.A lot of websites now require registration, meaning that users need to be assigned a username and password.