Site is very commonly used one for the register page to verify the existence of user name, a procedure that will connect to the database to determine whether there is user name, the database used is SQL Server, using Jsp+ Ajax programming techniques, I hope everyone like

ValidateUser
............\index.jsp
............\readMe.txt
............\validate.jsp
............\WEB-INF
............\.......\classes
............\.......\.......\shoarh
............\.......\.......\......\db
............\.......\.......\......\..\dbConnBean.class
............\.......\.......\......\..\dbConnBean.java
............\.......\lib
............\.......\...\sqljdbc.jar
............\.......\...\TestBean.jar
............\.......\web.xml

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