Create a form of user Login in JSP, that accepts the user
name and password from user and authenticate it with user
names and passwords stored in database.
(Plz provide me answer immediately)
Answer Posted / amit2009mca
first you should to create a jsp
like login.jsp
<%@page language="java"%>
<html>
<head>
<title>fill form</title>
<body>
<form action ="loginservlet.java" mrthod=post>
<input type =text ,name=username ,value="">
<imput type =password,name =password,value="">
</form>
</body>
....
loinservlet.java
import java.io.*;
import javax.servlet.*;
import java.sql.*;
class Loginservlet extends HttpSevlet
{
public void dopost(HttpServletRequest request,
HttpServletResponse response)throws
ServletException,IOException
{
String connectionURL
= "jdbc:mysql://192.168.10.59/datbasename";
Connection connection=null;
ResultSet rs;
String userName=new String("");
String passwrd=new String("");
response.setContentType("text/html");
try {
Class.forName("com.mysql.jdbc.Driver");
connection = DriverManager.getConnection
(connectionURL, "root", "root");
String sql = "select user,password from User";
Statement s = connection.createStatement();
s.executeQuery (sql);
rs = s.getResultSet();
while (rs.next ()){
username=rs.getString("user");
passwrd=rs.getString("password");
}
rs.close ();
s.close ();
}catch(Exception e){
System.out.println("Exception is ;"+e);
}
if(userName.equals(request.getParameter("usernmae"))
&&
passwrd.equals(request.getParameter
("password"))){
out.println("User Authenticated");
}
else{
out.println("You are not an authentic person");
}
}
}
bydefault the sql run on above port but if you changed it
so please chkit and give the port nuber which you customize
Class.forname(): we pass the string of particular driver
and it automaticaly convert it inot Class object
thanks AMIT SINGH09
Is This Answer Correct ? | 13 Yes | 8 No |
Post New Answer View All Answers
What is the difference between the prefix and postfix forms of the ++ operator?
Can list be final in java?
What is the largest data type in java?
What is difference between wait and notify in java?
What is %02d?
Which are different kinds of source code?
What one should take care of, while serializing the object?
What is :: operator in java?
What does the “final” keyword mean in front of a variable? A method? A class?
Given a singly linked list, how will you print out its contents in the reverse order? Can you do it with consuming any extra space?
Does constructor return any value?
What types of index data structures can you have in java?
What is the nested interface?
What is final?
Explain different forms of polymorphism?