Jsp code to enable and disable certain links using jsp code

Hi Everyone,

I have a doubt in JSP,I have created a web application which has priviledges of a superuser and guest..now if a superuser logs in the page gets redirected to home page where all the links under a menu should be visible and enabled whereas when a guest logs in he should be redirected to the same home page but with only a certain links only visible and enabled. now my doubt is how can i write the code to disable these links..
Can anyone help me?? its really really urgent.................!!
Please :)

Thanks in advance
Debo

View Answers

May 28, 2010 at 12:19 PM

Hi Friend,

Try the following code:

1)login.html:

<html>
<head>
</head>
<body>
<form name="form" method="post" action="http://localhost:8080/examples/jsp/mod.jsp">;
<br><br>
<table align="center"><tr><td><h2>Login Authentication</h2></td></tr></table>
<table width="300px" align="center" style="border:1px solid #000000;background-color:#efefef;">
<tr><td colspan=2></td></tr>
<tr><td colspan=2> </td></tr>
<tr>
<td><b>Login Name</b></td>
<td><input type="text" name="username" value=""></td>
</tr>
<tr>
<td><b>Password</b></td>
<td><input type="password" name="password" value=""></td>
</tr>

<tr>
<td></td>
<td><input type="submit" name="Submit" value="Submit"></td>
</tr>
<tr>
<td></td>
<td align="right"><a href="register.html">New User?</a></td>
</tr>
</table>
</table>
</form>

</body>
</html>

2)mod.jsp:
<%@page import="java.sql.*"%>
<html>
<body>
<%
String user=request.getParameter("username");
String pass=request.getParameter("password");
%>
<%
try{
Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/register","root";, "root");
Statement st=connection.createStatement();
ResultSet rs=st.executeQuery("Select * from user where username='"+user+"' and password='"+pass+"'");
String username="";
String pwd="",type="";
while(rs.next()){
username=rs.getString("username");
pwd=rs.getString("password") ;
type=rs.getString("type") ;
}
if(user.equals(username)&&pass.equals(pwd)){
response.sendRedirect("home.jsp?user="+user+"&&type="+type);

}
else
{
response.sendRedirect("login.html");
}
}
catch(Exception e)
{}
%>
</body>
</html>

3)home.jsp:

<%
String name=request.getParameter("user");
String type=request.getParameter("type");
System.out.println(type);
%>
Welcome <%=name%>,<br><br>
<%
if(type.equals("superuser")){
%>
<a id="one" href="edit.jsp">Edit Profile</a><br>
<a id="two" href="view.jsp">View Profile</a><br>
<a id="three" href="delete.jsp">Delete Profile</a>
<%
}
else{
%>
<a id="two" href="view.jsp">View Profile</a><br>
<%
}
%>

Thanks

May 28, 2010 at 12:56 PM

Thank u so much....I will try to use this code to get some help... :)

May 28, 2010 at 12:57 PM

Thank u so much....I will try to use this code to get some help... :)

May 28, 2010 at 1:22 PM

Hi,

As per the code u posted i tried to apply it...but i have used sessions in my code.For the particular session used i have to enable/disable a link.I need a code to do that.

Thanks in advance :)