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krishna
JSP-jdbc validation
3 Answer(s)      6 years and 4 months ago
Posted in : JSP-Servlet



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September 1, 2008 at 4:29 PM


Hi frined,

<html>
<title>login application in jsp</title>
<head>

<script type="text/javascript">

function validateForm(theForm){



if(theForm.userid.value==""){

//Please enter username

alert("Please enter User Name.");

theForm.userid.focus();

return false;

}
if(theForm.password.value==""){
//please enter passward
alert("Please enter Password.");
theForm.password.focus();
return false;
}

return true;
}
</script>
</head>

<body>

<table border="1" width="50%" bgcolor="pink">
<tr>
<td width="100%">
<form method="POST" action="loginAction.jsp" onsubmit="return validateForm(this);">

<h2 align="center">login page</h2>
<table border="1" width="100%">
<tr>
<td width="50%"><b>User Name:</b></td>
<td width="50%"><input type="text" name="userid" size="20"/> </td>
</tr>
<tr>
<td width="50%"><b>Password:</b></td>
<td width="50%"><input type="password" name="password" size="20"/> </td>
</tr>

</table>
<p><input type="submit" value="Submit" name="submit">
<input type="reset" value="Reset" name="reset"></p>

</form>
</td>
</tr>
</table>

</body>
</html>


September 1, 2008 at 4:30 PM


login action


<%@ page language="java" import="java.sql.*" import="java.util.*" %>

<%
Connection con = null;
String url = "jdbc:mysql://192.168.10.211:3306/";;
String db = "amar";
String driver = "com.mysql.jdbc.Driver";
String userName ="amar";
String password="amar123";
try{
Class.forName(driver);
con = DriverManager.getConnection(url+db,userName,password);
try{
Statement st = con.createStatement();
String user=request.getParameter("userid");
String pass=request.getParameter("password");
ResultSet rs=st.executeQuery("select userid,password from login");
while(rs.next()) {
String userid =rs.getString(1);
String passw=rs.getString(2);
if(user.equals(userid) && pass.equals(passw)) {
session.setAttribute("user",user);
%>
<jsp:forward page="LoginSuccess.jsp" />

<%}
else
out.println("Login Failed,Please try Againe");
%>

<%
}
}catch(Exception e1){}
}
catch (Exception e){
e.printStackTrace();
}

%>

-----------------------------------------------


Read for more information.

http://www.roseindia.net/jsp/valid-email-jsp.shtml

Thanks.


September 1, 2008 at 7:32 PM


dear friend,
thank you for posting the code. It is working well and I understood the logic. Thanks a lot!

thanks!


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