Java Project using Servlet and JSP
In this article I explained a java project, it contains registration,
login, update profile, change password, delete profile, logout, and forgot
password operations.
I posted code here clearly and I drawn a flow chart for
clear understanding.
Create the project in Netbeans
Create the Hibernate project in Netbeans
In this registration form I added form validation i.e. HTML5
<form action="./Register"method="post">
<table>
<tr><td>Name :</td><td><input type="text"
name="na" required/></td></tr>
<tr><td>Email id :</td><td>
<input type="email"
name="email"pattern="*@*.+"
required/></td></tr>
<tr><td>Password :</td><td>
<input type="password"
name="psw"pattern=
"[A-Za-z0-9!@#$%^&*()_]{8,30}"onchange="this.setCustomValidity
(this.validity.patternMismatch
? 'Password contain at least 8 charecters':'');
if(this.checkValidity())form.cpsw.pattern=this.value"required/>
</td></tr>
<tr><td>Reenter Password :</td><td>
<input type="password"
name="cpsw"
onchange="this.setCustomValidity(this.validity.patternMismatch
?
'Please enter same password as
above':'');"required/>
</td></tr>
<tr><td>Gender :</td><td>
<input type="radio"
name="gender" value="male"
required/>Male
<input type="radio"
name="gender" value="female"
required/>
Female</td></tr>
<tr><td>Birth Date :</td><td>
<input type="date"
name="date"required/>
</td></tr>
<tr><td>Phone Number :</td><td>
<input type="tel"
name="phno"pattern="[0-9]{10}"required /></td></tr>
<tr><td>Security Question :</td><td>
<select name="sq"required>
<option value="">Select question</option>
<option value="who is your
best friend">Who is your best friend</option>
<option value="what is your
favorite color">What is your favorite color</option>
<option value="what you like
most in this world">What you like most in
this world</option>
</select>
</td></tr>
<tr><td>Security Answer :</td><td><input type="text"
name="sa"required/>
</td></tr>
<tr><td></td><td>
<input type="checkbox"
name="tc" value="ON"required />
Accepted Terms and
Conditions</td></tr>
<tr><td></td><td><input type="submit"
value="Signup" name="Signup"
/>
</td></tr>
</table>
</form>
Registration Servlet file - Register.java
String name,uid,psw,dob,phno,sq,sa,gen;
name=request.getParameter("na");
uid=request.getParameter("email");
psw=request.getParameter("psw");
gen=request.getParameter("gender");
dob=request.getParameter("date");
phno=request.getParameter("phno").toString();
sq=request.getParameter("sq");
sa=request.getParameter("sa");
Class.forName("com.mysql.jdbc.Driver");
Connection
con=DriverManager.getConnection("jdbc:mysql://localhost:3306/
narendar","user","12345");
String q="insert into
user values('"+name+"','"+uid+"','"+psw+"','"+gen+"','"+dob+
"','"+phno+"','"+sq+"','"+sa+"')";
Statement
stmt=con.createStatement();
int
i=stmt.executeUpdate(q);
if(i>0){
out.println("registation
successful <a href='login.jsp'>Click here to login</a>");
}
else{
out.print("error"); }
Login jsp file - login.jsp
<form action="./Login" method="post">
<table>
<tr><td>Email id :</td><td>
<input type="email"
name="email"pattern="*@*.+"
required/></td></tr>
<tr><td>Password :</td><td>
<input type="password"
name="psw"pattern="[A-Za-z0-9!@#$%^&*()_]{8,30}"required/>
</td></tr>
<tr><td></td><td><input type="submit"
value="Singin" name="Signin"
/>
</td></tr>
<tr><td></td><td><a href="forgot.jsp">Forgot Password</a></td></tr>
</table>
</form>
Login Servlet file - Login.java
String uid,psw;
uid=request.getParameter("email");
psw=request.getParameter("psw");
Class.forName("com.mysql.jdbc.Driver");
Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306/
narendar","user","12345");
String q="select * from user where uid='"+uid+"' and
password='"+psw+"'";
Statement stmt=con.createStatement();
ResultSet res=stmt.executeQuery(q);
String dbuid=null,dbpsw=null;
while(res.next()){
dbuid=res.getString("uid");
dbpsw=res.getString("password");
}
if(uid.equals(dbuid)&&psw.equals(dbpsw)){
HttpSession se=request.getSession(true);
se.setAttribute("dbuid", dbuid);
RequestDispatcher
rd=request.getRequestDispatcher("home.jsp");
rd.forward(request, response);
}
else{
out.print("incorrect
userid and password");
request.getRequestDispatcher("login.jsp").include(request,
response);
}
Session created - lock.jsp
In this file, we get the values from database and forward that values to home page
<%
String
uid=session.getAttribute("dbuid").toString();
Class.forName("com.mysql.jdbc.Driver");
Connection
con=DriverManager.getConnection("jdbc:mysql://localhost:3306/
narendar","user","12345");
String q="select * from
user where uid='"+uid+"'";
Statement
stmt=con.createStatement();
ResultSet
re=stmt.executeQuery(q);
String tuid=null,tname=null,tdob=null,tphno=null,tgen=null;
while(re.next()){
tuid=re.getString("uid");
tname=re.getString("name");
tgen=re.getString("gender");
tphno=re.getString("ph_number").toString();
tdob=re.getString("dob").toString();
}
%>
Welcome Home page - home.jsp
<%@include file="lock.jsp"
%>
Welcome <%out.print(tname);%>
<nav>
<a href="home.jsp">Home</a> |
<a href="update_p.jsp">Update Profile</a> |
<a href="change_psw.jsp">Change Password</a> |
<a href="delete_profile.jsp">Delete Profile</a> |
<a href="logout.jsp">Logout</a> |
</nav>
Update profile file update_p.jsp
<%@include file="lock.jsp"
%>
<h1>Update Your Profile</h1>
<form action="./Update"method="post">
<table>
<tr><td></td><td>
<input type="hidden"
name="email"value="<%out.print(tuid);%>"/></td></tr>
<tr><td>Name :</td><td>
<input type="text"
name="na" value="<%out.print(tname);%>"required/></td></tr>
<tr><td>Birth Date :</td><td><input type="date"
name="date"
value="<%out.print(tdob);%>"required/></td></tr>
<tr><td>Phone Number :</td><td>
<input type="tel"
name="phno"pattern="[0-9]{10}"value="<%out.print(tphno);%>"
required /></td></tr>
<tr><td></td><td><input type="submit"
value="Update" name="Update"
/>
</td></tr>
</table>
</form>
Update servlet file - Update.java
String name,phno,uid,dob;
name=request.getParameter("na");
phno=request.getParameter("phno");
dob=request.getParameter("date");
uid=request.getParameter("email");
Class.forName("com.mysql.jdbc.Driver");
Connection
con=DriverManager.getConnection("jdbc:mysql://localhost:3306/
narendar","user","12345");
String q="update user
set name='"+name+"',dob='"+dob+"',ph_number='"+phno+
"' where
uid='"+uid+"'";
Statement
stmt=con.createStatement();
int
i=stmt.executeUpdate(q);
if(i>0){
out.print("successfully
updated");
request.getRequestDispatcher("home.jsp").include(request,
response);
}else{
out.print("try again");
}
Change password jsp file - change_psw.jsp
<%@include file="lock.jsp"
%>
<h1>Change Password</h1>
<form action="./Changepsw"method="post">
<table>
<tr><td></td><td>
<input type="hidden"
name="email" value="<%out.print(uid);%>"
/></td></tr>
<tr><td>Old Password :</td><td>
<input type="password"
name="oldpsw"pattern="[A-Za-z0-9!@#$%^&*()_]{8,30}"
required/></td></tr>
<tr><td>New Password :</td><td>
<input type="password"
name="psw"pattern="[A-Za-z0-9!@#$%^&*()_]{8,30}"
onchange="this.setCustomValidity
(this.validity.patternMismatch
? 'Password contain at least 8 charecters':'');
if(this.checkValidity())form.cpsw.pattern=this.value"required/>
</td></tr>
<tr><td>Reenter Password :</td><td>
<input type="password"
name="cpsw"
onchange="this.setCustomValidity(this.validity.patternMismatch
?
'Please enter same password as
above':'');"required/>
</td></tr>
<tr><td></td><td><input type="submit"
value="Update" name="Update"
/>
</td></tr>
</table>
</form>
Change password servlet file - Changepsw.java
String oldpsw,newpsw,uid;
oldpsw=request.getParameter("oldpsw");
newpsw=request.getParameter("psw");
uid=request.getParameter("email");
Class.forName("com.mysql.jdbc.Driver");
Connection
con=DriverManager.getConnection("jdbc:mysql://localhost:3306/
narendar","user","12345");
String q="select * from
user where uid='"+uid+"'";
Statement
stmt=con.createStatement();
ResultSet rs=stmt.executeQuery(q);
String tpsw=null;
while(rs.next()){
tpsw=rs.getString("password");
}
if(oldpsw.equals(tpsw)){
String q1="update user
set password='"+newpsw+"' where uid='"+uid+"'";
Statement
st=con.createStatement();
int
i=st.executeUpdate(q1);
if(i>0){
out.print("your password
successfully updated");
request.getRequestDispatcher("home.jsp").include(request,
response);
}
else{
out.print("try
again");
}
}else{
out.print("you given
wrong password");
}
}
Delete profile jsp file - delete_profile.jsp
<h1>Are you sure, do you want delete your profile?</h1>
<a href="home.jsp">No</a>
<a href="delete.jsp">Yes</a>
Profile Delete jsp
file(file name delete.jsp):
<%@include file="lock.jsp"
%>
<%
String q1="delete from
user where uid='"+tuid+"'";
Statement
stmt1=con.createStatement();
int
i=stmt1.executeUpdate(q1);
if(i==0){
out.println("your account
deleted successfully..<a href='index.jsp'>Click here to Register
</a>");
}
%>
Logout jsp file logout.jsp
<%@include file="lock.jsp"
%>
<%
HttpSession se=request.getSession(false);
se.invalidate();
out.print("successfully
loged out");
request.getRequestDispatcher("login.jsp").include(request,
response);
%>
FORGOT PASSWORD CODE
Forgot password jsp file - forgot.jsp
<form action="./Emailcheck" method="post">
<table>
<tr><td>Email id :</td><td><input type="email"
name="email"pattern="*@*.+"
required/></td></tr>
<tr><td></td><td><input type="submit"
value="Continue" name=""
/></td></tr>
</table>
</form>
Forgot password servlet file - Emailcheck.java
String uid=request.getParameter("email");
Class.forName("com.mysql.jdbc.Driver");
Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306/
narendar","user","12345");
String q="select * from user where uid='"+uid+"'";
Statement stmt=con.createStatement();
ResultSet rs=stmt.executeQuery(q);
String tuid="",tsq="";
while(rs.next()){
tuid=rs.getString("uid");
tsq=rs.getString("security_q");
}
if(uid.equals(tuid)){
HttpSession se=request.getSession(true);
se.setAttribute("tuid", tuid);
se.setAttribute("tsq",tsq);
RequestDispatcher rd=request.getRequestDispatcher("forgot_psw.jsp");
rd.forward(request, response);
}
else{
out.print("Your Entered
wrong email id");
request.getRequestDispatcher("forgot.jsp").include(request,
response);
}
}
Security question and answer checking - forgot_psw.jsp
<%
String
se_uid=session.getAttribute("tuid").toString();
String
se_sq=session.getAttribute("tsq").toString();
%>
<form action="forgot_psw.jsp"
method="post">
<table>
<tr><td>your security question :</td><td><%out.print(se_sq);%></td></tr>
<tr><td>your security answer :</td><td><input type="password"
name="sa"
required/></td></tr>
<tr><td></td><td><input type="submit"
value="Continue" name="Signin"
/>
</td></tr>
</table>
</form>
<%
try{
String sa;
sa=request.getParameter("sa");
Class.forName("com.mysql.jdbc.Driver");
Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306/
narendar","user","12345");
String q="select * from user where
uid='"+se_uid+"' and security_q='"+se_sq+"'";
Statement stmt=con.createStatement();
ResultSet rs=stmt.executeQuery(q);
String tsa=null,tuid=null,tpsw=null;
while(rs.next()){
tsa=rs.getString("security_a");
tuid=rs.getString("uid");
}
if(sa.equals(tsa)){
HttpSession se=request.getSession(true);
se.setAttribute("tsa", tsa);
se.setAttribute("tuid",tuid);
RequestDispatcher
rd=request.getRequestDispatcher("update_psw.jsp");
rd.forward(request, response);
}
else{
out.println("Your Entered wrong answer, try again");
}
}
Update forgot password file - update_psw.jsp
<%
String se_sa=session.getAttribute("tsa").toString();
String se_uid=session.getAttribute("tuid").toString();
%>
<h1>Update your password</h1>
<form action="./Forgotpsw"method="post">
<table>
<tr><td></td><td>
<input type="hidden"
name="email" value="<%out.print(se_uid);%>"
/></td></tr>
<tr><td></td><td>
<input type="hidden"
name="email" value="<%out.print(se_sa);%>"
/></td></tr>
<tr><td>Password :</td><td>
<input type="password"
name="psw"pattern="[A-Za-z0-9!@#$%^&*()_]{8,30}"
onchange="this.setCustomValidity
(this.validity.patternMismatch
? 'Password contain at least 8 charecters':'');
if(this.checkValidity())form.cpsw.pattern=this.value"required/></td></tr>
<tr><td>Conform Password :</td><td>
<input type="password"
name="cpsw"onchange="this.setCustomValidity
(this.validity.patternMismatch
? 'Please enter
same password as
above':'');"required/></td></tr>
<tr><td></td><td>
<input type="submit"
value="Update" name="Update"
/>
</td></tr>
</table> </form>
Update forgot password servlet file - Forgotpsw.java
String psw,uid;
psw=request.getParameter("psw");
uid=request.getParameter("email");
Class.forName("com.mysql.jdbc.Driver");
Connection
con=DriverManager.getConnection("jdbc:mysql://localhost:3306/
narendar","user","12345");
String q="update user
set password='"+psw+"' where uid='"+uid+"'";
Statement
stmt=con.createStatement();
int
i=stmt.executeUpdate(q);
if(i>0){
out.print("your password
updated successfully..<a href='login.jsp'>Click here
to login</a>");
}else{
out.print("try again");
}
OUTPUT SCREEN SHORTS
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