Code ví dụ Spring Boot với Hibernate Session + MySQL + Eclipse

# =============Database config==================
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/spring-boot-hibernate
spring.datasource.username=root
spring.datasource.password=admin1234

# ==============JPA / HIBERNATE=================
spring.jpa.show-sql=true
spring.jpa.hibernate.ddl-auto=none
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQLDialect
spring.jpa.properties.hibernate.current_session_context_class=org.springframework.orm.hibernate5.SpringSessionContext

package stackjava.com.springboothibernate;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.autoconfigure.jdbc.DataSourceTransactionManagerAutoConfiguration;
import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;

@SpringBootApplication
@ComponentScan({ "stackjava.com.springboothibernate" })
@EnableAutoConfiguration(exclude = { DataSourceAutoConfiguration.class,
    DataSourceTransactionManagerAutoConfiguration.class, HibernateJpaAutoConfiguration.class })
public class SpringBootHibernateApplication {

  public static void main(String[] args) {
    SpringApplication.run(SpringBootHibernateApplication.class, args);
  }
}

 Tạo các bean cấu hình cho Hibernate

(Trong Spring, Spring MVC chúng ta sẽ config luôn trong file xml)

package stackjava.com.springboothibernate;

import java.util.Properties;

import javax.sql.DataSource;

import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.hibernate5.HibernateTransactionManager;
import org.springframework.orm.hibernate5.LocalSessionFactoryBean;

@Configuration
public class BeanConfig {
  
  @Autowired
  private Environment env;
  
  @Bean(name = "dataSource")
  public DataSource getDataSource() {
    DriverManagerDataSource dataSource = new DriverManagerDataSource();
    dataSource.setDriverClassName(env.getProperty("spring.datasource.driver-class-name"));
    dataSource.setUrl(env.getProperty("spring.datasource.url"));
    dataSource.setUsername(env.getProperty("spring.datasource.username"));
    dataSource.setPassword(env.getProperty("spring.datasource.password"));
    return dataSource;
  }

  @Autowired
  @Bean(name = "sessionFactory")
  public SessionFactory getSessionFactory(DataSource dataSource) throws Exception {
    Properties properties = new Properties();
    properties.put("hibernate.dialect", env.getProperty("spring.jpa.properties.hibernate.dialect"));
    properties.put("hibernate.show_sql", env.getProperty("spring.jpa.show-sql"));
    properties.put("current_session_context_class", //
        env.getProperty("spring.jpa.properties.hibernate.current_session_context_class"));

    LocalSessionFactoryBean factoryBean = new LocalSessionFactoryBean();
    // Package contain entity classes
    factoryBean.setPackagesToScan("stackjava.com.springboothibernate.entities");
    factoryBean.setDataSource(dataSource);
    factoryBean.setHibernateProperties(properties);
    factoryBean.afterPropertiesSet();
    //
    SessionFactory sf = factoryBean.getObject();
    System.out.println("## getSessionFactory: " + sf);
    return sf;
  }

  @Autowired
  @Bean(name = "transactionManager")
  public HibernateTransactionManager getTransactionManager(SessionFactory sessionFactory) {
    HibernateTransactionManager transactionManager = new HibernateTransactionManager(sessionFactory);

    return transactionManager;
  }
}

File entity, dao, service, controller.

package stackjava.com.springboothibernate.entities;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name = "customer")
public class Customer {
  @Id
  @Column(name = "id")
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  private int id;

  @Column(name = "name")
  private String name;

  @Column(name = "address")
  private String address;

  // getter - setter

}

package stackjava.com.springboothibernate.dao;

import java.util.List;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;

import stackjava.com.springboothibernate.entities.Customer;


@Repository(value = "customerDAO")
@Transactional(rollbackFor = Exception.class)
public class CustomerDAO {

  @Autowired
  private SessionFactory sessionFactory;

  public void save(final Customer customer) {
    Session session = this.sessionFactory.getCurrentSession();
    session.save(customer);
  }

  public void update(final Customer customer) {
    Session session = this.sessionFactory.getCurrentSession();
    session.update(customer);
  }

  public Customer findById(final int id) {
    Session session = this.sessionFactory.getCurrentSession();
    return session.get(Customer.class, id);
  }

  public void delete(final Customer customer) {
    Session session = this.sessionFactory.getCurrentSession();
    session.remove(customer);
  }

  public List<Customer> findAll() {
    Session session = this.sessionFactory.getCurrentSession();
    return session.createQuery("FROM Customer", Customer.class).getResultList();
  }
}

package stackjava.com.springboothibernate.service;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import stackjava.com.springboothibernate.dao.CustomerDAO;
import stackjava.com.springboothibernate.entities.Customer;

@Service
@Transactional
public class CustomerService {

  @Autowired
  private CustomerDAO customerDAO;

  public List<Customer> findAll() {
    return customerDAO.findAll();
  }

  public Customer findById(final int id) {
    return customerDAO.findById(id);
  }

  public void save(final Customer customer) {
    customerDAO.save(customer);
  }

  public void update(final Customer customer) {
    customerDAO.update(customer);
  }

  public void delete(final int id) {
    Customer customer = customerDAO.findById(id);
    if (customer != null) {
      customerDAO.delete(customer);
    }
  }
}

package stackjava.com.springboothibernate.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

import stackjava.com.springboothibernate.entities.Customer;
import stackjava.com.springboothibernate.service.CustomerService;

@Controller
public class CustomerController {

  @Autowired
  private CustomerService customerService;

  @RequestMapping(value={"/", "/customer-list"})
  public String listCustomer(Model model) {
    model.addAttribute("listCustomer", customerService.findAll());
    return "customer-list";
  }

  @RequestMapping("/customer-save")
  public String insertCustomer(Model model) {
    model.addAttribute("customer", new Customer());
    return "customer-save";
  }

  @RequestMapping("/customer-view/{id}")
  public String viewCustomer(@PathVariable int id, Model model) {
    Customer customer = customerService.findById(id);
    model.addAttribute("customer", customer);
    return "customer-view";
  }
  
  @RequestMapping("/customer-update/{id}")
  public String updateCustomer(@PathVariable int id, Model model) {
    Customer customer = customerService.findById(id);
    model.addAttribute("customer", customer);
    return "customer-update";
  }

  @RequestMapping("/saveCustomer")
  public String doSaveCustomer(@ModelAttribute("Customer") Customer customer, Model model) {
    customerService.save(customer);
    model.addAttribute("listCustomer", customerService.findAll());
    return "redirect:customer-list";
  }

  @RequestMapping("/updateCustomer")
  public String doUpdateCustomer(@ModelAttribute("Customer") Customer customer, Model model) {
    customerService.update(customer);
    model.addAttribute("listCustomer", customerService.findAll());
    return "redirect:customer-list";
  }
  
  @RequestMapping("/customerDelete/{id}")
  public String doDeleteCustomer(@PathVariable int id, Model model) {
    customerService.delete(id);
    model.addAttribute("listCustomer", customerService.findAll());
    return "redirect:/customer-list";
  }
}

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