Enter the username and password in text boxes and click on login button.select * from log; ---------- ---------- | username | password | ---------- ---------- | Razmy | 100 | | Raza | 200 | | Jhone | 300 | | Jay | 400 | | Jennifer | 500 | ---------- ---------- 5 rows in set (0.00 sec) I wrote a Java class to check the username and the password from the database.Here we validate the various type of password structure through Java Script codes and regular expression. Next, the match() method of a string object is used to match the said regular expression against the input value. To validate the said format we use the regular expression ^^(? To validate the said format we use the regular expression ^[A-Za-z]\w$, where \w matches any word character (alphanumeric) including the underscore (equivalent to [A-Za-z0-9_]). Remove standard Submit: true from your Form panel configuration. Panel API documentation for a working, Ajax-style Form panel example. Allow me to first say that Servlets will kill you in the long-term; you seriously need to invest in the time and trouble of learning an MVC framework, where I suggest the Spring Web MVC framework. The second servlet: import *; import javax.servlet.*; import javax.*; import *; import *; import json. JSONObject; public class register extends Http Servlet I have no idea why/how your second grid data Servlet is being called by the failure block of your login code. A request though,you had pasted a link for the MVC Spring framework in previous comments.
Before you begin, you need to install the following software on your computer: To have as little work as possible, we will use some very interesting features of Net Beans IDE to create our simple user management. Here we will show you the encryption of your password with the MD5 algorithm.
=.*[a-z]) # must contains one lowercase characters (?
=.*[@#$%]) # must contains one special symbols in the list "@#$%" . mkyo Ng12* , special symbol “*” is not allow here 4. MKYONG12$ , lower case character is required Unit test with Test NG.
This management will only be able to store one username and one password in a preferences file. When your restart your application you will see that these changes are persistant. A very good possibility to make your system safer is to encrypt your password with an algorithm called MD5. So if you want to use this, you have to do some changes on your code in the 'store' method.
In this section we will show you how to create an option panel to handle your username and password. The 'Message-Digest Algorithm 5' is a cryptographic hash-function that was invented by Roland L. To use MD5 in our application we can use some features of Java. But we have a problem with our created options panel. Your entered password will now be created as a MD5-hash.