Search icon CANCEL
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Spring Boot 2.0 Projects
Spring Boot 2.0 Projects

Spring Boot 2.0 Projects: Build production-grade reactive applications and microservices with Spring Boot

eBook
€22.99 €32.99
Paperback
€41.99
Subscription
Free Trial
Renews at €18.99p/m

What do you get with Print?

Product feature icon Instant access to your digital eBook copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Download this book in EPUB and PDF formats
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
Table of content icon View table of contents Preview book icon Preview Book

Spring Boot 2.0 Projects

Building a Basic Web Application

This chapter will help readers get started developing web applications using Spring Boot 2.0. It will enable experts as well as beginners with Spring Boot web application development to understand the concepts behind a web application. It will explain these concepts by walking the reader through the process of developing a web application that enables the submitting of comments to a scrum retrospective meeting. This web application will use an embedded database for persistence, Spring Data JPA for a model, Spring Thymeleaf for a view, and Spring Web MVC for controllers.

The following topics will be covered in this chapter:

  • Using Spring Data JPA for persistence
  • Using Thymeleaf for view
  • Using Spring Web MVC with servlet 3.x for controller
  • Using Spring Security for authentication and authorization
  • Demonstrating Retro Board
...

Technical requirements

In order to implement a web application using Spring Boot, the following build tools need to be downloaded and installed:

The source code for this chapter can be found at https://github.com/PacktPublishing/Spring-Boot-2.0-Projects-Fundamentals-of-Spring-Boot-2.0, under the Chapter02 directory.

Getting started

In this section, readers will get an overview of the web application being developed. The requirements, design, and implementation details will be discussed in brief.

Web application architecture

A web application is exposed to multiple concurrent users over a public or private network as opposed to a standalone application. Let's get started developing a basic web application that uses the well known Model-view-controller (MVC) pattern to build a three-tier application. The MVC pattern is known for its separation of concerns by decoupling presentation logic (what the user sees in a browser), routing and business logic (what the application needs to accomplish), and persistence (where the data is finally...

Using Spring Data JPA for persistence

In this section, readers will learn what JPA is, as well as how Spring Data JPA helps simplify the development of applications with database persistence.

Understanding the Java Persistence API (JPA)

JPA provides object/relation mapping capabilities to enable mapping between relational database tables and Java objects in order to ease persistence in Java applications. JPA consists of the following features:

  • A query language to enable querying from relational database tables in order to retrieve Java objects
  • A JPA Criteria API, which can be used to generate queries dynamically
  • A set of metadata defined with XML Java annotations in order to successfully map relational database table columns...

Using Spring Thymeleaf for the view

In this section, we will explain in detail what a template engine is, and how to use Spring Thymeleaf to implement the view presentation.

Understanding template engines

Standard Java Enterprise Edition (Java EE) applications used JSPs to generate presentation views for the end user. JSP is a mature technology that enables users to use embedded Java code as well as Java Server Tag Library (JSTL) elements, which will, in turn, execute Java code to generate a presentation view. All JSPs are eventually compiled as a servlet.

But mixing this Java code with presentation-specific code (HTML, CSS, and many more) is cumbersome and makes separation of concern difficult. Furthermore, presentation views...

Using Spring Web MVC with servlet 3.x for the controller

Controllers are the integration point between the model and view in the MVC paradigm. They act like glue that binds together everything while taking care of business logic execution and routing. The following Maven starter dependency needs to be added to enable Spring Web MVC:

<dependencies>
...
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>

The preceding dependency will import servlet, Spring, and Tomcat dependencies to enable successfully writing servlet-based web applications using Spring.

Implementation of Controllers annotations

...

Using Spring Security for authentication and authorization

This web application has used Spring Security to authenticate users and to authorize them to submit comments. The Maven Spring Security starter needs to be specified as follows to enable Spring Security in the web application:

<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
</dependencies>

The following is the Spring Security configuration:

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

@Autowired
private UserService userDetailService;

@Override
public void configure(WebSecurity web) throws Exception {
web.ignoring().antMatchers("/h2-console/**");
}

@Override
protected void...

Demonstrating the Retro Board

When everything is put together, build and run the Retro Board, which we will be able to access using the http://<host>:<port> URL.

There are several ways to run a Spring Boot application, some of which are:

  • Running the Spring Boot application main class using an IDE
  • Building a JAR or WAR file using the following Maven command and then running:
$ mvn clean install
$ java -jar target/<package-name>.[jar|war]
  • Running using the Spring Boot Maven plugin:
$ mvn clean spring-boot:run

After running, the Retro Board web application will launch the login screen as follows:

This login screen is the default login screen for form logins in Spring Security. A username/password combination created in SecurityConfig can be used to log in to the system. After successful login, the user will be routed to the comments page, which is as follows...

Summary

Congratulations on completing this chapter, where the skills and knowledge required to build a basic web application were discussed in detail. This chapter started off by explaining what a web application is and how a web application can benefit from MVC patterns in terms of both development and maintenance. It talked about the requirements of a web application being developed and used a UML use case diagram to explain the requirement visually.

This chapter also explained how to write the domain model of an application based on the requirements, how to write data repositories for it, how to test those for their correct functioning, and so on. It also discussed how to encapsulate business logic inside services and test them effectively to make sure everything works correctly.

Subsequently, the chapter talked about how to write presentation views to create and display comments...

Questions

Please answer the following questions to see whether you have successfully mastered this chapter:

  1. What is a web application?
  2. What is an MVC pattern?
  3. What is a relational database?
  4. What is JPA?
  5. How is the @Entity annotation used in JPA?
  6. What is a template engine?
  7. What is Spring Security used for?

Further reading

Left arrow icon Right arrow icon
Download code icon Download Code

Key benefits

  • Run production-grade-based applications using the Spring WebFlux framework
  • Learn to develop high-performance asynchronous applications with Spring Boot
  • Create robust microservice-based applications with Kotlin using Spring Boot

Description

Spring Boot is a lightweight framework that provides a set of tools to create production-grade applications and services. Spring Boot 2.0 Projects is a comprehensive project-based guide for those who are new to Spring, that will get you up to speed with building real-world projects. Complete with clear step-by-step instructions, these easy-to-follow tutorials demonstrate best practices and key insights into building efficient applications with Spring Boot. The book starts off by teaching you how to develop a web application using Spring Boot, followed by giving you an understanding of creating a Spring Boot-based simple blog management system that uses Elasticsearch as the data store. Next, you’ll build a RESTful web services application using Kotlin and the Spring WebFlux framework - a new framework that enables you to create reactive applications in a functional way. Toward the last few chapters, you will build a taxi-hailing API with reactive microservices using Spring Boot, in addition to developing a Twitter clone with the help of a Spring Boot backend. To build on your knowledge further, you’ll also learn how to construct an asynchronous email formatter. By the end of this book, you’ll have a firm foundation in Spring programming and understand how to build powerful, engaging applications in Java using the Spring Boot framework.

Who is this book for?

This book is for competent Spring developers who want to understand how to develop complex yet scalable applications with Spring Boot. You must have a good understanding of Java programming and familiarity with the basics of Spring.

What you will learn

  • Learn the fundamental features of Spring Boot 2.0
  • Customize Spring Boot 2.0 applications
  • Build a basic web application
  • Use Redis to build a taxi-hailing API
  • Create a simple blog management system and a Twitter clone
  • Develop a reactive RESTful web service with Kotlin using Spring Boot
Estimated delivery fee Deliver to Czechia

Premium delivery 7 - 10 business days

€25.95
(Includes tracking information)

Product Details

Country selected
Publication date, Length, Edition, Language, ISBN-13
Publication date : Jul 30, 2018
Length: 336 pages
Edition : 1st
Language : English
ISBN-13 : 9781789136159
Category :
Languages :
Tools :

What do you get with Print?

Product feature icon Instant access to your digital eBook copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Download this book in EPUB and PDF formats
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
Estimated delivery fee Deliver to Czechia

Premium delivery 7 - 10 business days

€25.95
(Includes tracking information)

Product Details

Publication date : Jul 30, 2018
Length: 336 pages
Edition : 1st
Language : English
ISBN-13 : 9781789136159
Category :
Languages :
Tools :

Packt Subscriptions

See our plans and pricing
Modal Close icon
€18.99 billed monthly
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Simple pricing, no contract
€189.99 billed annually
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Choose a DRM-free eBook or Video every month to keep
Feature tick icon PLUS own as many other DRM-free eBooks or Videos as you like for just €5 each
Feature tick icon Exclusive print discounts
€264.99 billed in 18 months
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Choose a DRM-free eBook or Video every month to keep
Feature tick icon PLUS own as many other DRM-free eBooks or Videos as you like for just €5 each
Feature tick icon Exclusive print discounts

Frequently bought together


Stars icon
Total 125.97
Software Architecture with Spring 5.0
€41.99
Spring Boot 2.0 Projects
€41.99
Mastering Spring Boot 2.0
€41.99
Total 125.97 Stars icon

Table of Contents

11 Chapters
Introduction Chevron down icon Chevron up icon
Building a Basic Web Application Chevron down icon Chevron up icon
Building a Simple Blog Management System Chevron down icon Chevron up icon
Introduction to Kotlin Chevron down icon Chevron up icon
Building a Reactive Movie Rating API Using Kotlin Chevron down icon Chevron up icon
Building an API with Reactive Microservices Chevron down icon Chevron up icon
Building a Twitter Clone with Spring Boot Chevron down icon Chevron up icon
Introducing Spring Boot 2.0 Asynchronous Chevron down icon Chevron up icon
Building an Asynchronous Email Formatter Chevron down icon Chevron up icon
Assessments Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
(2 Ratings)
5 star 0%
4 star 100%
3 star 0%
2 star 0%
1 star 0%
Jan Galat Apr 07, 2024
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
The book provides exactly what was advertised. Solid purchase.
Feefo Verified review Feefo
Dowlath Apr 15, 2019
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
i have this book extra copy if anybody want please reach me.
Amazon Verified review Amazon
Get free access to Packt library with over 7500+ books and video courses for 7 days!
Start Free Trial

FAQs

What is the delivery time and cost of print book? Chevron down icon Chevron up icon

Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela
What is custom duty/charge? Chevron down icon Chevron up icon

Customs duty are charges levied on goods when they cross international borders. It is a tax that is imposed on imported goods. These duties are charged by special authorities and bodies created by local governments and are meant to protect local industries, economies, and businesses.

Do I have to pay customs charges for the print book order? Chevron down icon Chevron up icon

The orders shipped to the countries that are listed under EU27 will not bear custom charges. They are paid by Packt as part of the order.

List of EU27 countries: www.gov.uk/eu-eea:

A custom duty or localized taxes may be applicable on the shipment and would be charged by the recipient country outside of the EU27 which should be paid by the customer and these duties are not included in the shipping charges been charged on the order.

How do I know my custom duty charges? Chevron down icon Chevron up icon

The amount of duty payable varies greatly depending on the imported goods, the country of origin and several other factors like the total invoice amount or dimensions like weight, and other such criteria applicable in your country.

For example:

  • If you live in Mexico, and the declared value of your ordered items is over $ 50, for you to receive a package, you will have to pay additional import tax of 19% which will be $ 9.50 to the courier service.
  • Whereas if you live in Turkey, and the declared value of your ordered items is over € 22, for you to receive a package, you will have to pay additional import tax of 18% which will be € 3.96 to the courier service.
How can I cancel my order? Chevron down icon Chevron up icon

Cancellation Policy for Published Printed Books:

You can cancel any order within 1 hour of placing the order. Simply contact customercare@packt.com with your order details or payment transaction id. If your order has already started the shipment process, we will do our best to stop it. However, if it is already on the way to you then when you receive it, you can contact us at customercare@packt.com using the returns and refund process.

Please understand that Packt Publishing cannot provide refunds or cancel any order except for the cases described in our Return Policy (i.e. Packt Publishing agrees to replace your printed book because it arrives damaged or material defect in book), Packt Publishing will not accept returns.

What is your returns and refunds policy? Chevron down icon Chevron up icon

Return Policy:

We want you to be happy with your purchase from Packtpub.com. We will not hassle you with returning print books to us. If the print book you receive from us is incorrect, damaged, doesn't work or is unacceptably late, please contact Customer Relations Team on customercare@packt.com with the order number and issue details as explained below:

  1. If you ordered (eBook, Video or Print Book) incorrectly or accidentally, please contact Customer Relations Team on customercare@packt.com within one hour of placing the order and we will replace/refund you the item cost.
  2. Sadly, if your eBook or Video file is faulty or a fault occurs during the eBook or Video being made available to you, i.e. during download then you should contact Customer Relations Team within 14 days of purchase on customercare@packt.com who will be able to resolve this issue for you.
  3. You will have a choice of replacement or refund of the problem items.(damaged, defective or incorrect)
  4. Once Customer Care Team confirms that you will be refunded, you should receive the refund within 10 to 12 working days.
  5. If you are only requesting a refund of one book from a multiple order, then we will refund you the appropriate single item.
  6. Where the items were shipped under a free shipping offer, there will be no shipping costs to refund.

On the off chance your printed book arrives damaged, with book material defect, contact our Customer Relation Team on customercare@packt.com within 14 days of receipt of the book with appropriate evidence of damage and we will work with you to secure a replacement copy, if necessary. Please note that each printed book you order from us is individually made by Packt's professional book-printing partner which is on a print-on-demand basis.

What tax is charged? Chevron down icon Chevron up icon

Currently, no tax is charged on the purchase of any print book (subject to change based on the laws and regulations). A localized VAT fee is charged only to our European and UK customers on eBooks, Video and subscriptions that they buy. GST is charged to Indian customers for eBooks and video purchases.

What payment methods can I use? Chevron down icon Chevron up icon

You can pay with the following card types:

  1. Visa Debit
  2. Visa Credit
  3. MasterCard
  4. PayPal
What is the delivery time and cost of print books? Chevron down icon Chevron up icon

Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela