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What will we build?
Development Steps
- Create an Eclipse Dynamic Web Project
- Add Dependencies
- Project Structure
- MySQL Database Setup
- Create a JavaBean -
Employee.java
- Create an
EmployeeDao.java
- Create an
EmployeeServlet.java
- Create
employeeregister.jsp
- Create
employeedetails.jsp
- Demo
Step 1: Create an Eclipse Dynamic Web Project
To create a new dynamic Web project in Eclipse:
- On the main menu, select
File > New > Project...
. - In the upcoming wizard, choose
Web > Dynamic Web Project
. - Click
Next
. - Enter the project name as
jsp-servlet-jdbc-mysql-example
. - Ensure that the target runtime is set to Apache Tomcat with the currently supported version.
Step 2: Add Dependencies
Add the latest release of the below JAR files to the lib
folder:
jakarta.servlet-api-6.1.0.jar
mysql-connector-java-8.0.13.jar
jakarta.servlet.jsp.jstl-api-3.0.0.jar
If you are using a Maven project then add the following dependencies to your pom.xml
:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>net.javaguides.servlet.tutorial</groupId> <artifactId>java-servlet-tutorial</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>java-servlet-tutorial Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>jakarta.servlet</groupId> <artifactId>jakarta.servlet-api</artifactId> <version>6.1.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>jakarta.servlet.jsp.jstl</groupId> <artifactId>jakarta.servlet.jsp.jstl-api</artifactId> <version>3.0.0</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.13</version> </dependency> </dependencies> <build> <finalName>java-servlet-tutorial</finalName> </build> </project>
Explanation:
- This
pom.xml
file defines the project dependencies and build configuration. - The
jakarta.servlet-api
dependency is for using the latest servlet API. - The
jakarta.servlet.jsp.jstl-api
dependency is for using JSP standard tag library. - The
mysql-connector-java
dependency is for connecting to the MySQL database.
Step 3: Project Structure
Here is the standard project structure for your reference:
Explanation:
- The
src/main/java
directory contains the Java source files. - The
src/main/webapp
directory contains the web application files (JSP pages). - The
pom.xml
file is the Maven project file.
Step 4: MySQL Database Setup
Create a database named employees
in MySQL and then create an employee
table using the following DDL script:
CREATE TABLE `employee` ( `id` int(3) NOT NULL AUTO_INCREMENT, `first_name` varchar(20) DEFAULT NULL, `last_name` varchar(20) DEFAULT NULL, `username` varchar(250) DEFAULT NULL, `password` varchar(20) DEFAULT NULL, `address` varchar(45) DEFAULT NULL, `contact` varchar(45) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;
Explanation:
- The
employee
table has columns forid
,first_name
,last_name
,username
,password
,address
, andcontact
. - The
id
column is the primary key and is auto-incremented.
Step 5: Create a JavaBean - Employee.java
package net.javaguides.jsp.jdbc.bean; import java.io.Serializable; /** * JavaBean class used in jsp action tags. * @author Ramesh Fadatare */ public class Employee implements Serializable { private static final long serialVersionUID = 1L; private String firstName; private String lastName; private String username; private String password; private String address; private String contact; public String getFirstName() { return firstName; } public void setFirstName(String firstName) { this.firstName = firstName; } public String getLastName() { return lastName; } public void setLastName(String lastName) { this.lastName = lastName; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } public String getContact() { return contact; } public void setContact(String contact) { this.contact = contact; } }
Explanation:
- The
Employee
class is a JavaBean that represents the employee data. - It implements
Serializable
to allow the bean to be persisted. - It has getter and setter methods for all fields.
Step 6: Create EmployeeDao.java
package net.javaguides.jsp.jdbc.database; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.SQLException; import net.javaguides.jsp.jdbc.bean.Employee; public class EmployeeDao { public int registerEmployee(Employee employee) throws ClassNotFoundException { String INSERT_USERS_SQL = "INSERT INTO employee" + " (first_name, last_name, username, password, address, contact) VALUES " + " (?, ?, ?, ?, ?,?);"; int result = 0; Class.forName("com.mysql.cj.jdbc.Driver"); try (Connection connection = DriverManager .getConnection("jdbc:mysql://localhost:3306/employees?useSSL=false", "root", "root"); // Step 2:Create a statement using connection object PreparedStatement preparedStatement = connection.prepareStatement(INSERT_USERS_SQL)) { preparedStatement.setString(1, employee.getFirstName()); preparedStatement.setString(2, employee.getLastName()); preparedStatement.setString(3, employee.getUsername()); preparedStatement.setString(4, employee.getPassword()); preparedStatement.setString(5, employee.getAddress()); preparedStatement.setString(6, employee.getContact()); System.out.println(preparedStatement); // Step 3: Execute the query or update query result = preparedStatement.executeUpdate(); } catch (SQLException e) { // process sql exception printSQLException(e); } return result; } private void printSQLException(SQLException ex) { for (Throwable e: ex) { if (e instanceof SQLException) { e.printStackTrace(System.err); System.err.println("SQLState: " + ((SQLException) e).getSQLState()); System.err.println("Error Code: " + ((SQLException) e).getErrorCode()); System.err.println("Message: " + e.getMessage()); Throwable t = ex.getCause(); while (t != null) { System.out.println("Cause: " + t); t = t.getCause(); } } } } }
Explanation:
- The
EmployeeDao
class handles database operations related to employee registration. - The
registerEmployee
method inserts a new employee into the database. - It uses a
PreparedStatement
to prevent SQL injection. - The
printSQLException
method prints detailed SQL exceptions.
Step 7: Create EmployeeServlet.java
package net.javaguides.jsp.jdbc.web; import java.io.IOException; import jakarta.servlet.ServletException; import jakarta.servlet.annotation.WebServlet; import jakarta.servlet.http.HttpServlet; import jakarta.servlet.http.HttpServletRequest; import jakarta.servlet.http.HttpServletResponse; import net .javaguides.jsp.jdbc.database.EmployeeDao; import net.javaguides.jsp.jdbc.bean.Employee; @WebServlet("/register") public class EmployeeServlet extends HttpServlet { private static final long serialVersionUID = 1L; private EmployeeDao employeeDao; public void init() { employeeDao = new EmployeeDao(); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String firstName = request.getParameter("firstName"); String lastName = request.getParameter("lastName"); String username = request.getParameter("username"); String password = request.getParameter("password"); String address = request.getParameter("address"); String contact = request.getParameter("contact"); Employee employee = new Employee(); employee.setFirstName(firstName); employee.setLastName(lastName); employee.setUsername(username); employee.setPassword(password); employee.setContact(contact); employee.setAddress(address); try { employeeDao.registerEmployee(employee); } catch (Exception e) { e.printStackTrace(); } response.sendRedirect("employeedetails.jsp"); } }
Explanation:
- The
EmployeeServlet
class processes the HTTP request for employee registration. - It uses the
EmployeeDao
to save the employee data into the database. - If registration is successful, it redirects to
employeedetails.jsp
.
Step 8: Create employeeregister.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> <!DOCTYPE html> <html> <head> <meta charset="ISO-8859-1"> <title>Employee Registration Form</title> </head> <body> <div align="center"> <h1>Employee Register Form</h1> <form action="<%= request.getContextPath() %>/register" method="post"> <table style="width: 80%"> <tr> <td>First Name</td> <td><input type="text" name="firstName" /></td> </tr> <tr> <td>Last Name</td> <td><input type="text" name="lastName" /></td> </tr> <tr> <td>UserName</td> <td><input type="text" name="username" /></td> </tr> <tr> <td>Password</td> <td><input type="password" name="password" /></td> </tr> <tr> <td>Address</td> <td><input type="text" name="address" /></td> </tr> <tr> <td>Contact No</td> <td><input type="text" name="contact" /></td> </tr> </table> <input type="submit" value="Submit" /> </form> </div> </body> </html>
Explanation:
- This JSP file creates an employee registration form.
- The form fields are
firstName
,lastName
,username
,password
,address
, andcontact
. - The form's action attribute points to the
/register
URL, which maps to theEmployeeServlet
.
Step 9: Create employeedetails.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> <!DOCTYPE html> <html> <head> <meta charset="ISO-8859-1"> <title>Employee Details</title> </head> <body> <h1>User successfully registered!</h1> </body> </html>
Explanation:
- This JSP file displays a success message when an employee is successfully registered.
Step 10: Demo
It's time to see a demo of the above development. Deploy this web application in Tomcat server.
Employee Registration Form
Once you deploy this application successfully, navigate to http://localhost:8080/jsp-servlet-jdbc-mysql-example/employeeregister.jsp
to see the registration form:
Registration Success Page
After entering the employee details and submitting the form, if registration is successful, you will be redirected to employeedetails.jsp
:
Conclusion
In this tutorial, we learned how to build a simple employee registration module using JSP, Servlet, JDBC, and MySQL databases. By following the steps above, you can create a similar web application for your own use.
Related Servlet Posts
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- HttpServlet Class Example Tutorial
- HttpServlet doGet() Method Example
- HttpServlet doPost() Method Example
- @WebServlet Annotation Example
- @WebInitParam Annotation Example
- @WebListener Annotation Example
- @WebFilter Annotation Example
- @MultipartConfig Annotation Example
- How to Return a JSON Response from a Java Servlet
- Servlet Registration Form + JDBC + MySQL Database Example
- Login Form Servlet + JDBC + MySQL Example
- Servlet JDBC Eclipse Example Tutorial
- JSP Servlet JDBC MySQL CRUD Example Tutorial
- Servlet + JSP + JDBC + MySQL Example
- Registration Form using JSP + Servlet + JDBC + Mysql Example
- Login Form using JSP + Servlet + JDBC + MySQL Example
- JSP Servlet Hibernate CRUD Example
- JSP Servlet Hibernate Web Application
- Hibernate Registration Form Example with JSP, Servlet, MySQL
- Login Form using JSP + Servlet + Hibernate + MySQL Example
Project is running but data are not stored in database
ReplyDeleteThe data is stored on the database. The table should be created like this. AUTO_INCREMENT should be used for the id.
DeleteCREATE TABLE employee
(
id INT(11) AUTO_INCREMENT PRIMARY KEY,
first_name VARCHAR(250) NOT NULL,
last_name VARCHAR(250) NOT NULL,
username VARCHAR(250) NOT NULL,
PASSWORD VARCHAR(250) NOT NULL,
address VARCHAR(250) NOT NULL,
contact VARCHAR(250) NOT NULL
);
DAO class should be like this.
***********************
public class EmployeeDao {
public int registerEmployee(Employee employee) throws ClassNotFoundException
{
String INSERT_USERS_SQL = "INSERT INTO employee "
+ "(first_name, last_name, username, password, address, contact) values "
+ "(?, ?, ?, ?, ?, ?);";
int result = 0;
Class.forName("com.mysql.jdbc.Driver");
try(
Connection connection = DriverManager.
getConnection("jdbc:mysql://localhost:3306/java", "root", "");
PreparedStatement preparedStatement = connection.prepareStatement(INSERT_USERS_SQL);
)
{
preparedStatement.setString(1, employee.getFirstName());
preparedStatement.setString(2, employee.getLastName());
preparedStatement.setString(3, employee.getUsername());
preparedStatement.setString(4, employee.getPassword());
preparedStatement.setString(5, employee.getAddress());
preparedStatement.setString(6, employee.getContact());
System.out.println(preparedStatement);
result = preparedStatement.executeUpdate();
}
catch(SQLException e)
{
e.printStackTrace();
}
return result;
}
}
The data is stored on the database. The table should be created like this. AUTO_INCREMENT should be used for the id.
ReplyDeleteCREATE TABLE employee
(
id INT(11) AUTO_INCREMENT PRIMARY KEY,
first_name VARCHAR(250) NOT NULL,
last_name VARCHAR(250) NOT NULL,
username VARCHAR(250) NOT NULL,
PASSWORD VARCHAR(250) NOT NULL,
address VARCHAR(250) NOT NULL,
contact VARCHAR(250) NOT NULL
);
DAO class should be like this.
***********************
public class EmployeeDao {
public int registerEmployee(Employee employee) throws ClassNotFoundException
{
String INSERT_USERS_SQL = "INSERT INTO employee "
+ "(first_name, last_name, username, password, address, contact) values "
+ "(?, ?, ?, ?, ?, ?);";
int result = 0;
Class.forName("com.mysql.jdbc.Driver");
try(
Connection connection = DriverManager.
getConnection("jdbc:mysql://localhost:3306/java", "root", "");
PreparedStatement preparedStatement = connection.prepareStatement(INSERT_USERS_SQL);
)
{
preparedStatement.setString(1, employee.getFirstName());
preparedStatement.setString(2, employee.getLastName());
preparedStatement.setString(3, employee.getUsername());
preparedStatement.setString(4, employee.getPassword());
preparedStatement.setString(5, employee.getAddress());
preparedStatement.setString(6, employee.getContact());
System.out.println(preparedStatement);
result = preparedStatement.executeUpdate();
}
catch(SQLException e)
{
e.printStackTrace();
}
return result;
}
}
I am connected to PostgreSQL DB but data is not storing into database.
ReplyDeletesame here with mysql db
Deletedata is not storing on databases
ReplyDelete