how to store html form data in mysql database using hibernate

how to store html form data in mysql database using hibernate | Java Servlet and hibernate Example

For Explanation watch video:

Directory Structure

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">

<artifactId>Servlet-Hibernate</artifactId>

<version>0.0.1-SNAPSHOT</version>

<name>Servlet-Hibernate Maven Webapp</name>

<url>http://maven.apache.org</url>

<maven.compiler.source>1.9</maven.compiler.source>

<maven.compiler.target>1.9</maven.compiler.target>

</properties>

<groupId>junit</groupId>

<artifactId>junit</artifactId>

</dependency>

<groupId>javax.servlet</groupId>

<artifactId>javax.servlet-api</artifactId>

<scope>provided</scope>

</dependency>

<groupId>org.hibernate</groupId>

<artifactId>hibernate-core</artifactId>

<version>5.4.10.Final</version>

</dependency>

<groupId>mysql</groupId>

<artifactId>mysql-connector-java</artifactId>

</dependency>

</dependencies>

<build>

<finalName>Servlet-Hibernate</finalName>

</build>

</project>

form.html

<!DOCTYPE html>

<html>

<head>

<title>Insert title here</title>

href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css"

integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm"

crossorigin="anonymous">

<style>

#div{

width:600px;

height:350px;

margin:auto;

margin-top:100px;

}

</style>

</head>

<h2 class="card-header text-center bg-danger text-light">Registration Form</h2>

<tr>

<td>Enter Name</td>

</tr>

<tr>

<td>Enter Dob</td>

</tr>

<tr>

<td>Enter Gender</td>

<td><input type="radio" name="gender" value="male">Male

<input type="radio" name="gender" value="female">Female</td>

</tr>

<tr>

<td>Choose City</td>

<option value="mumbai">Mumbai</option>

<option value="nagpur">Nagpur</option>

</select></td>

</tr>

<tr>

</tr>

</table>

</form>

</div>

</body>

</html>

web.xml

<!DOCTYPE web-app PUBLIC

"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"

"http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>

<display-name>Archetype Created Web Application</display-name>

<welcome-file-list>

<welcome-file>form.html</welcome-file>

</welcome-file-list>

</web-app>

hibernate.cfg.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE hibernate-configuration PUBLIC

"-//Hibernate/Hibernate Configuration DTD//EN"

"http://hibernate.sourceforge.net/hibernate-configuration-5.0.dtd">

<hibernate-configuration>

<session-factory>

<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>

<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/new</property>

<property name="dialect">org.hibernate.dialect.MySQL8Dialect</property>

<property name="hbm2ddl.auto">update</property>

</session-factory>

</hibernate-configuration>

Utility.java

package com.utility;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.cfg.Configuration;

public class Utiltity {

static SessionFactory factory = null;

static {

Configuration cfg = new Configuration();

cfg.configure("hibernate.cfg.xml");

factory = cfg.buildSessionFactory();

}

public static SessionFactory getSessionFactory() {

return factory;

}

public static Session getSession() {

Session ses = factory.openSession();

return ses;

}

Employee.java

package com.entity;

import javax.persistence.Column;

import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.Id;

import javax.persistence.Table;

@Entity

@Table(name = "emptab")

public class Employee {

@Id

@GeneratedValue

private Integer eid;

@Column(name = "empname")

private String ename;

private String dob;

private String gender;

private String city;

public Integer getEid() {

return eid;

}

public void setEid(Integer eid) {

this.eid = eid;

}

public String getEname() {

return ename;

}

public void setEname(String ename) {

this.ename = ename;

}

public String getDob() {

return dob;

}

public void setDob(String dob) {

this.dob = dob;

}

public String getGender() {

return gender;

}

public void setGender(String gender) {

this.gender = gender;

}

public String getCity() {

return city;

}

public void setCity(String city) {

this.city = city;

}

SaveObject.java

package com.test;

import org.hibernate.HibernateException;

import org.hibernate.Session;

import org.hibernate.Transaction;

import com.entity.Employee;

import com.utility.Utiltity;

public class SaveObject {

public static int save(Employee emp) {

//get the session Object

Session ses = Utiltity.getSession();

Transaction tx = null;

Integer count = 0;

try(ses){

//brgin the transaction

tx = ses.beginTransaction();

//save the object

count = (Integer) ses.save(emp);

//commit the trasaction

tx.commit();

}catch(HibernateException he) {

he.printStackTrace();

tx.rollback();

}catch(Exception e) {

e.printStackTrace();

tx.rollback();

}

return count;

}

RegisterServlet.java

package com.servlet;

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 com.entity.Employee;

import com.test.SaveObject;

@WebServlet("/register")

public class RegisterServlet extends HttpServlet{

@Override

protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {

//get the printWriter

PrintWriter pw = res.getWriter();

//set Contenet Type

res.setContentType("text/html");

//read the form dat

String name = req.getParameter("name");

String dob = req.getParameter("dob");

String city = req.getParameter("city");

String gender = req.getParameter("gender");

Employee emp = new Employee();

emp.setCity(city);

emp.setDob(dob);

emp.setEname(name);

emp.setGender(gender);

int count = SaveObject.save(emp);

if(count==0) {

pw.println("<h2>Employee not registred</h2>");

pw.println("<a href='form.html'>Home</a>");

}else {

pw.println("<h2>Employee registred Successfully</h2>");

pw.println("<a href='form.html'>Home</a>");

}

//close the stream

pw.close();

}

@Override

protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

doGet(req, resp);

}

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