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 / 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 |
Differentiate between stringbuffer and string?
Distinguish method overloading and overriding
What is tostring () method?
What is an 8 bit word?
Is space a character in java?
What happens when a thrown exception is not handled?
Q) I have a ArrayList object, in that object i have added 5 integer values, 5 float values, 5 string values. Now question is how can delete particular type of data ( i.e all int values or all float values or string values) in that list object at a time?
What is ternary operator?
How to make a class or a bean serializable?
What is primitive data type in java?
What is meant by object?
What is the purpose of a default constructor?