We follow following steps to create hibernate application :
- Create the Dynamic web project
- Add jar files for hibernate
- Create the Persistent class
- Create the mapping file for Persistent class(.hbm.xml)
- Create the Configuration file(.cfg.xml)
- Create the class that retrieves or stores the persistent object
- Run the application
Step 1: Create the project(New-->Dynamic web project)
Step 2: Add required jar files
Step 3: Create the Persistent Class
Testing.java
package com.java;
public class Testing {
private String name,email,password;
private int amt;
public String getName() {return name;}
public void setName(String name) {this.name = name;}
public String getEmail() {return email;}
public void setEmail(String email) {this.email = email;}
public String getPassword() {return password;}
public void setPassword(String password) {this.password = password;}
public int getAmt() {return amt;}
public void setAmt(int amt) {this.amt = amt;}}
Step 4:Create the mapping and configuration file for persistent class
src-->New-->other--Hibernate-->console configuration file
i)Select Database connection and select the server what we used.here we used MYSQL.Select mysql server
ii)Select Configuration file and create new
hibernate.cfg.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.password">root</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>
<mapping resource="mypack/testing.hbm.xml"/>
</session-factory>
</hibernate-configuration>
Step 5: Create Mapping file
Testing.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Jul 14, 2016 3:37:00 PM by Hibernate Tools 3.5.0.Final -->
<hibernate-mapping>
<class name="com.java.Testing" table="TESTING">
<id name="name" type="java.lang.String">
<column name="Name" />
<generator class="assigned" />
</id>
<property name="email" type="java.lang.String">
<column name="email" />
</property>
<property name="password" type="java.lang.String">
<column name="password" />
</property>
<property name="amt" type="int">
<column name="Amount" />
</property>
</class>
</hibernate-mapping>
Step 6: Create the servlet class for store and retrive the persistent object
home.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Home Page</title>
</head>
<body>
<form action="New">
NAME<input type="text" name="name"/>
PASSWORD<input type="password" name="password"/>
EMAIL<input type="text" name="email"/>
Amount<input type="text" name="amt"/>
<input type="submit" value="Login">
</form>
</body>
</html>
New.java
package com.jeni;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
public class New extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {
String name=request.getParameter("name");
String email=request.getParameter("email");
String password=request.getParameter("password");
String amt1=request.getParameter("amt");
int amt=Integer.parseInt(amt1);
//creating configuration object
Configuration cfg=new Configuration();
cfg.configure("hibernate.cfg.xml");//populates the data of the configuration file
//creating session factory object
SessionFactory factory=cfg.buildSessionFactory();
//creating session object
Session session=factory.openSession();
//creating transaction object
Transaction t=session.beginTransaction();
Testing e1=new Testing();
e1.setName(name);
e1.setPassword(password);
e1.setEmail(email);
e1.setAmt(amt);
session.persist(e1);//persisting the object
t.commit();//transaction is committed
session.close();
out.println("successfully saved");
}
catch(Exception e)
{
System.out.println(e);
}}}
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_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>DynamicH</display-name>
<servlet>
<servlet-name>New</servlet-name>
<servlet-class>com.jeni.New</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>New</servlet-name>
<url-pattern>/New</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>home.jsp</welcome-file>
</welcome-file-list>
</web-app>
//Same as persistent class name,hbm file name and database table
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