Building RESTful Web Services with Spring 5 - Second Edition

图书信息

作者	Raja CSP Raman,Ludovic Dewailly
出版社	Packt Publishing
ISBN	9781788471879
出版时间	2018-01-29
字数	24.9万
分类	Packt Publishing,进口书,外文原版书,电脑,网络

读书简介

Find out how to implement the REST architecture to build resilient software in Java with the help of the Spring 5.0 framework. About This Book ? Follow best practices and explore techniques such as clustering and caching to achieve a reactive, scalable web service, ? Leverage the Spring Framework to quickly implement RESTful endpoints, ? Learn to implement a client library for a RESTful web service using the Spring Framework along with the new front end framework. Who This Book Is For This book is intended for those who want to learn to build RESTful web services with the latest Spring 5.0 Framework. To make best use of the code samples included in the book, you should have a basic knowledge of the Java language. Previous experience with the Spring Framework would also help you get up and running quickly. What You Will Learn ? Deep dive into the principles behind REST ? Expose CRUD operations through RESTful endpoints with the Spring Framework ? Devise response formats and error handling strategies, offering a consistent and flexible structure to simplify integration for service consumers ? Follow the best approaches for dealing with a service's evolution while maintaining backward compatibility ? Understand techniques to secure web services ? Comply with the best ways to test RESTful web services, including tips for load testing ? Optimise and scale web services using techniques such as caching and clustering In Detail REST is an architectural style that tackles the challenges of building scalable web services. In today's connected world, APIs have taken a central role on the web. APIs provide the fabric through which systems interact, and REST has become synonymous with APIs.The depth, breadth, and ease of use of Spring makes it one of the most attractive frameworks in the Java ecosystem. Marrying the two technologies is therefore a very natural choice.This book takes you through the design of RESTful web services and leverages the Spring Framework to implement these services. Starting from the basics of the philosophy behind REST, you'll go through the steps of designing and implementing an enterprise-grade RESTful web service. Taking a practical approach, each chapter provides code samples that you can apply to your own circumstances.This second edition brings forth the power of the latest Spring 5.0 release, working with MVC built-in as well as the front end framework. It then goes beyond the use of Spring to explores approaches to tackle resilience, security, and scalability concerns. Improve performance of your applications with the new HTTP 2.0 standards. You'll learn techniques to deal with security in Spring and discover how to implement unit and integration test strategies.Finally, the book ends by walking you through building a Java client for your RESTful web service, along with some scaling techniques using the new Spring Reactive libraries. Style and approach Readers will be taken through a set of specific patterns and tested practices to build effective RESTful systems in Java using the Spring framework.

目录

Title Page

Copyright and Credits

Building RESTful Web Services with Spring 5 Second Edition

Dedication

Packt Upsell

Why subscribe?

PacktPub.com

Contributors

About the authors

About the reviewer

Packt is searching for authors like you

Preface

Who this book is for

What this book covers

To get the most out of this book

Download the example code files

Download the color images

Conventions used

Get in touch

Reviews

A Few Basics

REST – a basic understanding

Uniform interface

Client and server

Stateless

Cacheable

Layered system

Code on demand (COD)

More on REST

Imperative and Reactive programming

Reactive Streams

Benefits of Reactive programming

Reactive programming in Java and Spring 5

Our RESTful web service architecture

Summary

Building RESTful Web Services in Spring 5 with Maven

Apache Maven

Creating a project with Maven

Viewing a POM file after creating a project

POM file structure

Understanding POM dependencies

Adding Log4j 2.9.1 to POM dependency

Dependency trees

Spring Boot

Developing RESTful web services

Creating a project base

Working with your favorite IDE

Summary

Flux and Mono (Reactor Support) in Spring

Benefits of Reactive programming

Reactive Core and Streams

Back pressures and Reactive Streams

WebFlux

Basic REST API

Flux

Mono

User class with Reactive – REST

Summary

CRUD Operations in Spring REST

CRUD operations in Spring REST

HTTP methods

Reactive server initialization

Sample values in the repository

getAllUsers – mapping

getAllUsers – implementation in the handler and repository

Testing the endpoint – getAllUsers

getUser – implementation in the handler and repository

Testing the endpoint – getUser

createUser – implementation in the handler and repository

Testing the endpoint – createUser

updateUser – implementation in the handler and repository

Testing the endpoint – updateUser

deleteUser – implementation in the handler and repository

Testing the endpoint – deleteUser

Summary

CRUD Operations in Plain REST (Without Reactive) and File Upload

Mapping CRUD operations to HTTP methods

Creating resources

CRUD operation in Spring 5 (without Reactive)

getAllUsers – implementation

getUser – implementation

createUser – implementation

updateUser – implementation

deleteUser – implementation

File uploads – REST API

Testing the file upload

Summary

Spring Security and JWT (JSON Web Token)

Spring Security

Authentication and authorization

JSON Web Token (JWT)

JWT dependency

Creating a JWT token

Generating a token

Getting a subject from a JWT token

Getting a subject from a token

Summary

Testing RESTful Web Services

JUnit

MockMvc

Testing a single user

Postman

Getting all the users – Postman

Adding a user – Postman

Generating a JWT – Postman

Getting the subject from the token

SoapUI

Getting all the users – SoapUI

Generating JWT SoapUI

Getting the subject from the token – SoapUI

jsoup

Getting a user – jsoup

Adding a user – jsoup

Running the test cases

Summary

Performance

HTTP compression

Content negotiation

Accept-Encoding

Content-Encoding

Server-driven content negotiation

Agent-driven content negotiation

HTTP caching

HTTP cache control

Public caching

Private caching

No-cache

Only-if-cached

Cache validation

ETags

Last-Modified/If-Modified-Since headers

Cache implementation

The REST resource

Caching with ETags

Summary

AOP and Logger Controls

Aspect-oriented programming (AOP)

AOP (@Before) with execution

Testing AOP @Before execution

AOP (@Before) with annotation

Testing AOP @Before annotation

Integrating AOP with JWT

Logger controls

SLF4J, Log4J, and Logback

Logback framework

Logback dependency and configuration

Logging levels

Logback implementation in class

Summary

Building a REST Client and Error Handling

Building a REST client

RestTemplate

Error handling

Customized exception

Summary

Scaling

Clustering

Benefits of clustering

Load balancing

Scaling databases

Vertical scaling

Horizontal scaling

Read replicas

Pool connections

Use multiple masters

Load balancing in DB servers

Database partitioning

Sharding (horizontal partitioning)

Vertical partitioning

Distributed caching

Data-tier caching

First-level caching

Second-level caching

Application-tier caching

Memcached

Redis

Hazelcast

Ehcache

Riak

Aerospike

Infinispan

Cache2k

Other distributed caching

Amazon ElastiCache

Oracle distributed cache (Coherence)

Summary

Microservice Basics

Monolithic architecture and its drawbacks

Introduction to microservices

Independence and autonomy

Resilience and fault tolerance

Automated environment

Stateless

Benefits of microservices

Microservice components

Configuration server

Load balancer

Service discovery

Circuit breaker

Edge server

Microservice tools

Netflix Eureka

Netflix Zuul

Spring Cloud Netflix

Netflix Ribbon

Netflix Hystrix

Netflix Turbine

HashiCorp Consul

Eclipse MicroProfile

Summary

Ticket Management – Advanced CRUD

Ticket management using CRUD operations

Registration

User types

User POJO

Customer registration

Admin registration

CSR registration

Login and token management

Generating a token

Customer login

Admin login

CSR login

Ticket management

Ticket POJO

Getting a user by token

User Ticket management

Ticket controller

The UserTokenRequired interface

The UserTokenRequiredAspect class

Getting my tickets – customer

Allowing a user to view their single ticket

Allowing a customer to update a ticket

Updating a ticket – service (TicketServiceImpl)

Deleting a ticket

Deleting a service – service (TicketServiceImpl)

Deleting my ticket – API (ticket controller)

Admin Ticket management

Allowing a admin to view all tickets

Getting all tickets – service (TicketServiceImpl)

Getting all tickets – API (ticket controller)

The AdminTokenRequired interface

The AdminTokenRequiredAspect class

Admin updates a ticket

Updating a ticket by admin – service (TicketServiceImpl)

Allowing admin to view a single ticket

Allowing admin to delete tickets

Deleting tickets – service (TicketServiceImpl):

Deleting tickets by admin – API (ticket controller):

CSR Ticket management

CSR updates a ticket

CSRTokenRequired AOP

CSRTokenRequiredAspect

CSR view all tickets

Viewing all tickets by CSR – API (ticket controller)

CSR view single ticket

CSR delete tickets

Deleting tickets – service (TicketServivceImpl)

Deleting tickets by CSR – API (ticket controller)

Summary

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