Practical No.
22
Date of Performance: 17th Dec 2021
Date of Submission: 17th Dec 2021
Name: Abhishek Hagawane
Roll No & Div: 68 B
TITLE: Write a Servlet program to send username and password using HTML
forms and authenticate the user.
COURSE OUTCOME: Develop programs using Servlet.
PRACTICAL OUTCOME: Write a program to demonstrate the use of
HttpServlet as a parameterized servlet
Program Code
1. Write a Program to send the username to server and server will send
the length of username to client Code:
Client html code:
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form action="add">
Enter Username : <input type="text" name="num1"><br>
Enter Password : <input type="text" name="num2"><br>
<input type="submit">
</form>
</body>
</html>
Server class code:
package com.Practical22;
import java.io.IOException; import
java.io.PrintWriter;
import javax.servlet.http.HttpServlet; import
javax.servlet.http.HttpServletRequest; import
javax.servlet.http.HttpServletResponse;
public class usernameLength extends HttpServlet{ public void
service(HttpServletRequest req,HttpServletResponse res) throws
IOException{
{
String i=req.getParameter("num1");
String j=req.getParameter("num2");
PrintWriter out=res.getWriter();
res.getWriter().println("Length of username is :
"+i.length()+"\nLength of password is : "+j.length());
}
}
}
Output:
2. Write the output of following code cosidering below HTML is front
end and servlet as back end Code:
Client html code:
<html>
<body>
<form action="find" method="POST">
User Name:<input type="text" name="username"><br>
Password:<input type="password" name="password" ><br>
<input type="submit">
</form>
</body> </html>
Server class code:
package com.Practical22;
import java.io.IOException; import
java.io.PrintWriter; import
javax.servlet.ServletException; import
javax.servlet.http.HttpServlet; import
javax.servlet.http.HttpServletRequest; import
javax.servlet.http.HttpServletResponse; public
class AthonticationServlet extends HttpServlet
{
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws
ServletException, IOException
{
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
String pass="abhishek12345"; String
username,password;
password=request.getParameter("password");
if(password.equals(pass))
{
out.println("Login Successfull");
} else
{
out.println("Login Unsuccessfull");
}
}
}
Output:
Entering correct password:
Entering incorrect password:
Exercise
1. Develop a program to receive student subject marks through
HTML forms TextField and send the response as passed or Failed in
Examination...
Code:
Client html code:
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Result</title>
</head>
<body>
<form method="post" action="result">
<h1> Enter Marks:</h1>
<h2>AJP : <input type="text" name="num1"/> </h2>
<h2> OS : <input type="text" name="num2"/> </h2>
<h2> ST : <input type="text" name="num3"/> </h2> <h2>
JS : <input type="text" name="num4"/> </h2>
<input type="submit"> <br/>
</form>
</body>
</html>
Server class code:
//1. Develop a program to receive student subject marks through HTML
forms TextField and send the response as passed or Failed in Examination..
package com.Practical22;
import java.io.IOException; import
java.io.PrintWriter; import
javax.servlet.ServletException; import
javax.servlet.annotation.WebServlet; import
javax.servlet.http.HttpServlet; import
javax.servlet.http.HttpServletRequest; import
javax.servlet.http.HttpServletResponse;
import org.eclipse.jdt.internal.compiler.batch.Main;
public class Checkpass extends HttpServlet{ public void
doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter(); int
num1,num2,num3,num4; num1 =
Integer.parseInt(request.getParameter("num1")); num2 =
Integer.parseInt(request.getParameter("num2")); num3 =
Integer.parseInt(request.getParameter("num3")); num4 =
Integer.parseInt(request.getParameter("num4"));
if(num1>35 && num2>35 && num3>35 && num4>35)
{
float a=(num1+num2+num3+num4)/4;
out.println("<h1>Congratulations!!! You are Passed with "+a+"%
marks</h1>");
}
else
{
out.println("<h1> You are Failed!!!</h1>");
}
}
}
Output:
Entering less than 35 marks in one subject
