@Transactional rollbackForClassName example using spring boot

By
Rakesh
-

In this post, we will see about @Transactional rollbackForClassName example using spring boot

 

@Transactional rollbackForClassName example using spring boot and Oracle.

Prerequisites –

  • JDK 1.8
  • Oracle 10g
  • Eclipse
  • maven
  • postman

 

Create maven project, Don’t forget to check ‘Create a simple project (skip)’click on next. Fill all details(GroupId – springtransactionexample, ArtifactId – springtransactionexample and name – springtransactionexample) and click on finish. Keep packaging as the jar.

 

Modify the pom.xml with below code.

<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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>springtransactionexample</groupId>
  <artifactId>springtransactionexample</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>springtransactionexample</name>
  
  <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.2.RELEASE</version>
 </parent>
  <dependencies>
	<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
      
   </dependencies>
   
   
    
   
</project>

 

Create the below directory structure.

@Transactional rollbackForClassName example using spring boot

Define the following classes and interfaces.

Book.java

package com.springtransaction.entity;

import java.util.ArrayList;
import java.util.List;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToMany;
import javax.persistence.Table;

@Entity
@Table(name = "book")
public class Book {
	 
	 @Id
	 @GeneratedValue(strategy = GenerationType.AUTO)
	 private int bookId;
	 
	 @Column(name="book_name")
	 private String bookName;
	 
	 @Column(name="auther_name")
	 private String autherName;
	 
	 @Column(name="price")
	 private int price;
	 
	

	public String getAutherName() {
		return autherName;
	}

	public void setAutherName(String autherName) {
		this.autherName = autherName;
	}

	public int getPrice() {
		return price;
	}

	public void setPrice(int price) {
		this.price = price;
	}

	

	public String getBookName() {
		return bookName;
	}

	public void setBookName(String bookName) {
		this.bookName = bookName;
	}

	public int getBookId() {
		return bookId;
	}

	public void setBookId(int bookId) {
		this.bookId = bookId;
	}

	
	 
	 
}

 

BookService.java – interface

package com.springtransaction.service;

import java.util.List;

import org.springframework.stereotype.Component;

import com.springtransaction.entity.Book;

@Component
public interface BookService {
	public void saveBook(Book book);

}

BookRepository.java – interface

package com.springtransaction.repository;

import java.io.Serializable;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.data.repository.CrudRepository;

import org.springframework.stereotype.Repository;

import com.springtransaction.entity.Book;

@Repository
public interface BookRepository extends CrudRepository<Book,Serializable> {
		
}

 

BookServiceImpl.java

package com.springtransaction.serviceimpl;

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

import com.springtransaction.entity.Book;
import com.springtransaction.repository.BookRepository;
import com.springtransaction.service.BookService;


@Service
public class BookServiceImpl implements BookService {

	@Autowired
	private BookRepository bookRepository;




	@Transactional(rollbackForClassName = {"NullpointerException"})
	public void saveBook(Book book){

		Book book1 = null;
		// save book
		book1 = bookRepository.save(book);
		 
		String s1 = null;
		System.out.println(s1.hashCode());
	}

}

 

BookController.java

package com.springtransaction.controller;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Isolation;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import com.springtransaction.entity.Book;
import com.springtransaction.service.BookService;

@RestController
@RequestMapping("/book")
public class BookController {
	@Autowired
	private BookService bookService;

	
	@RequestMapping(value = "/savebook",method = RequestMethod.POST)
    @ResponseBody
    public Book saveBook(@RequestBody Book book) {
		bookService.saveBook(book);
		return book;
	}
	
	
}

 

JpaConfig.java

package com.springtransaction.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;

@Configuration
@EnableJpaRepositories(basePackages = "com.springtransaction.repository")
public class JpaConfig {

}

 

SpringMainExample.java

package com.springtransaction.springtransaction;



import org.hibernate.SessionFactory;
import org.hibernate.jpa.HibernateEntityManagerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.Bean;

import com.springtransaction.entity.Book;
import com.springtransaction.service.BookService;

@SpringBootApplication(scanBasePackages={"com.springtransaction"})
@EntityScan("com.springtransaction.*") 
public class SpringMainExample {
	

	
	
	public static void main(final String[] args) {
		final ConfigurableApplicationContext configurableApplicationContext = SpringApplication
				.run(SpringMainExample.class, args);
		
		
	}
	
	
	
		
	
	
}

And finally, we have application.properties

spring.datasource.url=jdbc:oracle:thin:@localhost:1521:XE
spring.datasource.username=SYSTEM
spring.datasource.password=oracle1
spring.datasource.driver-class-name=oracle.jdbc.driver.OracleDriver
 
spring.datasource.testWhileIdle = true
spring.datasource.validationQuery = SELECT 1
 
spring.jpa.show-sql = true
 
 
spring.jpa.hibernate.ddl-auto =create
 
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.Oracle10gDialect
 
server.port = 9091

 

We are good now. Let’s run the application.

Testing of example using postman.

Test from the postman with below request data.

 

Let’s check the DB.

@Transactional rollbackForClassName example using spring boot

We have specified rollbackForClassName = {“NullpointerException”}), means transaction should get to rollbacked for NullpointerException. We should not have any record in the database.

That’s all about @Transactional rollbackForClassName example using spring boot.

You may like.

Spring Data JPA Examples.

Other Spring Data JPA and Hibernate tutorials.

Spring Transaction Management Docs.

 

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