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Servlet Project User Management Project using eclipse, mysql , tomcat , bootstrap

Servlet Project User Management Project using eclipse, mysql , tomcat , bootstrap

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6 min read

For Explanation Watch video::

Note :: In this Project you must configure web server (for example tomcat) with eclipse ide

Download Bootstrap from :: https://getbootstrap.com/docs/4.3/getting-started/download/

Download mysql jar file from :: https://mvnrepository.com/artifact/mysql/mysql-connector-java/8.0.22

adding MySQL Connector/J jar file in eclipse ide for jdbc video ::

Directory Structure:

dir.png

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" id="WebApp_ID" version="4.0">
   <welcome-file-list>
    <welcome-file>home.html</welcome-file>
  </welcome-file-list>
  <display-name>UserMgmt</display-name>

</web-app>

Home.html


<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
<link rel="stylesheet" href="css/bootstrap.css"></link>
<style>
  #frm{
     width:500px;
     margin:auto;
     margin-top:100px;
  }
  marquee{
     margin-top:10px;
  }
</style>
</head>
<body class="container-fluid">
    <marquee><h2 class="text-primary">Register Here</h2></marquee>
    <form action="register" method="post" class="form card" id="frm">
        <h2 class="bg-danger text-white card-header">Registration Form</h2>
        <table class="table table-hover">
        <tr>
         <td>Name</td>
         <td><input type="text" name="userName" required></td>
        </tr>
        <tr>
         <td>Email</td>
         <td><input type="email" name="email" required></td>
        </tr>
        <tr>
         <td>Mobile</td>
         <td><input type="text" name="mobile" required></td>
        </tr>
        <tr>
         <td>DOB</td>
         <td><input type="date" name="dob" required></td>
        </tr>
        <tr>
         <td>City</td>
         <td><select name="city">
            <option value="pune">Pune</option>
            <option value="Mumbai">Mumbai</option>
            <option value="Delhi">Delhi</option>
            <option value="Hydrabad">Hydrabad</option>
         </select></td>
        </tr>
        <tr>
        <td>Gender</td>
        <td><input type="radio" name="gender" value="male">Male &nbsp;
            <input type="radio" name="gender" value="female">Female
        </td>
        </tr>
        <tr class="card-footer">
        <td><button type="submit" class="btn btn-outline-success">Register</button></td>
        <td><button type="reset" class="btn btn-outline-danger">cancel</button></td>
        </tr>
        </table>
        <button class="btn btn-outline-success d-block"><a href="showdata">Show Users</a></button>
    </form>
</body>
</html>

RegisterServlet.java

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/register")
public class RegisterServlet extends HttpServlet {
    private final static String query = "insert into user(name,email,mobile,dob,city,gender) values(?,?,?,?,?,?)";
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
        //get PrintWriter
        PrintWriter pw = res.getWriter();
        //set content type
        res.setContentType("text/html");
        //link the bootstrap
        pw.println("<link rel='stylesheet' href='css/bootstrap.css'></link>");
        //get the values
        String name = req.getParameter("userName");
        String email = req.getParameter("email");
        String mobile = req.getParameter("mobile");
        String dob = req.getParameter("dob");
        String city = req.getParameter("city");
        String gender = req.getParameter("gender");
        //load the JDBC driver
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
        }catch(Exception e) {
            e.printStackTrace();
        }
        //generate the connection
        try(Connection con = DriverManager.getConnection("jdbc:mysql:///usermgmt","root","root");
                PreparedStatement ps = con.prepareStatement(query);){
            //set the values
            ps.setString(1, name);
            ps.setString(2, email);
            ps.setString(3, mobile);
            ps.setString(4, dob);
            ps.setString(5, city);
            ps.setString(6, gender);
            //execute the query
            int count = ps.executeUpdate();
            pw.println("<div class='card' style='margin:auto;width:300px;margin-top:100px'>");
            if(count==1) {
                pw.println("<h2 class='bg-danger text-light text-center'>Record Registered Successfully</h2>");
            }else {
                pw.println("<h2 class='bg-danger text-light text-center'>Record Not Registered</h2>");
            }
        }catch(SQLException se) {
            pw.println("<h2 class='bg-danger text-light text-center'>"+se.getMessage()+"</h2>");
            se.printStackTrace();
        }catch(Exception e) {
            e.printStackTrace();
        }
        pw.println("<a href='home.html'><button class='btn btn-outline-success'>Home</button></a>");
        pw.println("</div>");
        //close the stram
        pw.close();
    }
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
        doGet(req,res);
    }
}

ShowUserServlet.java


import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/showdata")
public class ShowUserServlet extends HttpServlet {
    private final static String query = "select id,name,email,mobile,dob,city,gender from user";
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
        //get PrintWriter
        PrintWriter pw = res.getWriter();
        //set content type
        res.setContentType("text/html");
        //link the bootstrap
        pw.println("<link rel='stylesheet' href='css/bootstrap.css'></link>");
        pw.println("<marquee><h2 class='text-primary'>User Data</h2></marquee>");
        //load the JDBC driver
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
        }catch(Exception e) {
            e.printStackTrace();
        }
        //generate the connection
        try(Connection con = DriverManager.getConnection("jdbc:mysql:///usermgmt","root","root");
                PreparedStatement ps = con.prepareStatement(query);){
            //resultSet
            ResultSet rs = ps.executeQuery();
            pw.println("<div style='margin:auto;width:900px;margin-top:100px;'>");
            pw.println("<table class='table table-hover table-striped'>");
            pw.println("<tr>");
            pw.println("<th>ID</th>");
            pw.println("<th>Name</th>");
            pw.println("<th>Email</th>");
            pw.println("<th>Mobile No</th>");
            pw.println("<th>DOB</th>");
            pw.println("<th>City</th>");
            pw.println("<th>Gender</th>");
            pw.println("<th>Edit</th>");
            pw.println("<th>Delete</th>");
            pw.println("</tr>");
            while(rs.next()) {
                pw.println("<tr>");
                pw.println("<td>"+rs.getInt(1)+"</td>");
                pw.println("<td>"+rs.getString(2)+"</td>");
                pw.println("<td>"+rs.getString(3)+"</td>");
                pw.println("<td>"+rs.getString(4)+"</td>");
                pw.println("<td>"+rs.getString(5)+"</td>");
                pw.println("<td>"+rs.getString(6)+"</td>");
                pw.println("<td>"+rs.getString(7)+"</td>");
                pw.println("<td><a href='editurl?id="+rs.getInt(1)+"'>Edit</a></td>");
                pw.println("<td><a href='deleteurl?id="+rs.getInt(1)+"'>Delete</a></td>");
                pw.println("</tr>");
            }
            pw.println("</table>");
        }catch(SQLException se) {
            pw.println("<h2 class='bg-danger text-light text-center'>"+se.getMessage()+"</h2>");
            se.printStackTrace();
        }catch(Exception e) {
            e.printStackTrace();
        }
        pw.println("<button class='btn btn-outline-success d-block'><a href='home.html'>Home</a></button>");
        pw.println("</div>");
        //close the stream
        pw.close();
    }
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
        doGet(req,res);
    }
}

DeleteServlet.java


import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/deleteurl")
public class DeleteServlet extends HttpServlet {
    private final static String query = "delete from user where id = ?";
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
        //get PrintWriter
        PrintWriter pw = res.getWriter();
        //set content type
        res.setContentType("text/html");
        //link the bootstrap
        pw.println("<link rel='stylesheet' href='css/bootstrap.css'></link>");
        //get the values
        int id = Integer.parseInt(req.getParameter("id"));
        //load the JDBC driver
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
        }catch(Exception e) {
            e.printStackTrace();
        }
        //generate the connection
        try(Connection con = DriverManager.getConnection("jdbc:mysql:///usermgmt","root","root");
                PreparedStatement ps = con.prepareStatement(query);){
            //set the values
            ps.setInt(1, id);
            //execute the query
            int count = ps.executeUpdate();
            pw.println("<div class='card' style='margin:auto;width:300px;margin-top:100px'>");
            if(count==1) {
                pw.println("<h2 class='bg-danger text-light text-center'>Record Deleted Successfully</h2>");
            }else {
                pw.println("<h2 class='bg-danger text-light text-center'>Record Not Deleted</h2>");
            }
        }catch(SQLException se) {
            pw.println("<h2 class='bg-danger text-light text-center'>"+se.getMessage()+"</h2>");
            se.printStackTrace();
        }catch(Exception e) {
            e.printStackTrace();
        }
        pw.println("<a href='home.html'><button class='btn btn-outline-success'>Home</button></a>");
        pw.println("&nbsp; &nbsp;");
        pw.println("<a href='showdata'><button class='btn btn-outline-success'>Show User</button></a>");
        pw.println("</div>");
        //close the stram
        pw.close();
    }
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
        doGet(req,res);
    }
}

EditScreenServlet.java 

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/editurl")
public class EditScreenServlet extends HttpServlet {
    private final static String query = "select name,email,mobile,dob,city,gender from user where id=?";
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
        //get PrintWriter
        PrintWriter pw = res.getWriter();
        //set content type
        res.setContentType("text/html");

        //get the id
        //get the values
        int id = Integer.parseInt(req.getParameter("id"));
        //link the bootstrap
        pw.println("<link rel='stylesheet' href='css/bootstrap.css'></link>");
        //load the JDBC driver
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
        }catch(Exception e) {
            e.printStackTrace();
        }
        //generate the connection
        try(Connection con = DriverManager.getConnection("jdbc:mysql:///usermgmt","root","root");
                PreparedStatement ps = con.prepareStatement(query);){
            //set value 
            ps.setInt(1, id);
            //resultSet
            ResultSet rs = ps.executeQuery();
            rs.next();
            pw.println("<div style='margin:auto;width:500px;margin-top:100px;'>");
            pw.println("<form action='edit?id="+id+"' method='post'>");
            pw.println("<table class='table table-hover table-striped'>");
            pw.println("<tr>");
            pw.println("<td>Name</td>");
            pw.println("<td><input type='text' name='name' value='"+rs.getString(1)+"'></td>");
            pw.println("</tr>");
            pw.println("<tr>");
            pw.println("<td>Email</td>");
            pw.println("<td><input type='email' name='email' value='"+rs.getString(2)+"'></td>");
            pw.println("</tr>");
            pw.println("<tr>");
            pw.println("<td>Mobile</td>");
            pw.println("<td><input type='text' name='mobile' value='"+rs.getString(3)+"'></td>");
            pw.println("</tr>");
            pw.println("<tr>");
            pw.println("<td>DOB</td>");
            pw.println("<td><input type='date' name='dob' value='"+rs.getString(4)+"'></td>");
            pw.println("</tr>");
            pw.println("<tr>");
            pw.println("<td>City</td>");
            pw.println("<td><input type='text' name='city' value='"+rs.getString(5)+"'></td>");
            pw.println("</tr>");
            pw.println("<tr>");
            pw.println("<td>Gender</td>");
            pw.println("<td><input type='text' name='gender' value='"+rs.getString(6)+"'></td>");
            pw.println("</tr>");
            pw.println("<tr>");
            pw.println("<td><button type='submit' class='btn btn-outline-success'>Edit</button></td>");
            pw.println("<td><button type='reset' class='btn btn-outline-danger'>Cancel</button></td>");
            pw.println("</tr>");
            pw.println("</table>");
            pw.println("</form>");
        }catch(SQLException se) {
            pw.println("<h2 class='bg-danger text-light text-center'>"+se.getMessage()+"</h2>");
            se.printStackTrace();
        }catch(Exception e) {
            e.printStackTrace();
        }
        pw.println("<a href='home.html'><button class='btn btn-outline-success'>Home</button></a>");
        pw.println("</div>");
        //close the stream
        pw.close();
    }
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
        doGet(req,res);
    }
}

EditRecordServlet.java 


import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/edit")
public class EditRecordServlet extends HttpServlet {
    private final static String query = "update user set name=?,email=?,mobile=?,dob=?,city=?,gender=? where id=?";
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
        //get PrintWriter
        PrintWriter pw = res.getWriter();
        //set content type
        res.setContentType("text/html");
        //link the bootstrap
        pw.println("<link rel='stylesheet' href='css/bootstrap.css'></link>");
        //get the values
        int id = Integer.parseInt(req.getParameter("id"));
        String name = req.getParameter("name");
        String email = req.getParameter("email");
        String mobile = req.getParameter("mobile");
        String dob = req.getParameter("dob");
        String city = req.getParameter("city");
        String gender = req.getParameter("gender");
        //load the JDBC driver
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
        }catch(Exception e) {
            e.printStackTrace();
        }
        //generate the connection
        try(Connection con = DriverManager.getConnection("jdbc:mysql:///usermgmt","root","root");
                PreparedStatement ps = con.prepareStatement(query);){
            //set the values
            ps.setString(1, name);
            ps.setString(2, email);
            ps.setString(3, mobile);
            ps.setString(4, dob);
            ps.setString(5, city);
            ps.setString(6, gender);
            ps.setInt(7, id);
            //execute the query
            int count = ps.executeUpdate();
            pw.println("<div class='card' style='margin:auto;width:300px;margin-top:100px'>");
            if(count==1) {
                pw.println("<h2 class='bg-danger text-light text-center'>Record Edited Successfully</h2>");
            }else {
                pw.println("<h2 class='bg-danger text-light text-center'>Record Not Edited</h2>");
            }
        }catch(SQLException se) {
            pw.println("<h2 class='bg-danger text-light text-center'>"+se.getMessage()+"</h2>");
            se.printStackTrace();
        }catch(Exception e) {
            e.printStackTrace();
        }
        pw.println("<a href='home.html'><button class='btn btn-outline-success'>Home</button></a>");
        pw.println("&nbsp; &nbsp;");
        pw.println("<a href='showdata'><button class='btn btn-outline-success'>Show User</button></a>");
        pw.println("</div>");
        //close the stram
        pw.close();
    }
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
        doGet(req,res);
    }
}

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