QuestionAsk Questions?
Aayshi Mehrotra
<p>import javax.servlet.http.*;
import javax.servlet.*;
import java.io.*;
import java.sql.*;</p>
<p>public class Login extends HttpServlet
{
public void doPost(HttpServletRequest req,HttpServletResponse res) throws ServletException , IOException
{
res.setContentType("text/html");
PrintWriter out=res.getWriter();</p>
<p>String name=req.getParameter("username:");
String pass=req.getParameter("password");
//boolean t=req.getValue("checkbox");
try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection c =DriverManager.getConnection("Jdbc:Odbc:mydsn");</p>
<p>Statement s =c.createStatement();
ResultSet rs=s.executeQuery("select * from emp ");</p>
<p>if(rs.next())
{</p>
<p>if(name!=rs.getString(1)||pass!=rs.getString(2))
{
out.println("<html><body>");
int x =s.executeUpdate("insert in to emp values("+name+"),("+pass+") ");</p>
<p>out.println("u hv registered");</p>
<p>out.println("<a href=welcome.htm>next</a>");
out.println("</body></html>");
}</p>
<p>if(name==rs.getString(1)&&pass==rs.getString(2))
{out.println("<html><body>");
out.println("<a href=wecome.htm>login</a>");
out.println("</body></html>");}</p>
<p>/*if(t==true)
{
Cookie c1 =new Cookie("name","ducat");
Cookie c2 =new Cookie("add","noida");
res.addCookie(c1);
res.addCookie(c2);</p>
<p>c1.setMaxAge(30*60);
c2.setMaxAge(30*60);
}
*/
}
}
catch(Exception e){}
}}</p>
View Answers
February 2, 2011 at 4:57 PM
Hi Friend,
Try this:
1)login.jsp:
<html> <form name="form" method="post" action="../Login1" > <table> <tr><td>Username:</td><td><input type="text" name="user"></td></tr> <tr><td>Password:</td><td><input type="password" name="pass"></td></tr> <tr><td></td><td><input type="submit" value="Submit"></td></tr> </table> </form> </html>
2)Login1.java:
import java.io.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class Login1 extends HttpServlet implements Servlet {
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out=response.getWriter();
String user=request.getParameter("user");
String pass=request.getParameter("pass");
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con = DriverManager.getConnection("jdbc:odbc:student");
Statement st=con.createStatement();
ResultSet rs=st.executeQuery("select * from login where uname='"+user+"' and password='"+pass+"'");
int count=0;
while(rs.next())
{
count++;
}
if(count>0)
{
out.println("welcome "+user);
}
else
{
response.sendRedirect("/examples/jsp/login.jsp");
}
}
catch(Exception e){
System.out.println(e);
}
}
}
For cookies,
Thanks
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