Developing Java Applications with Spring and Spring Boot

How to do it...

1. First, we will need to remove the extendMessageConverters method from our WebConfiguration class as the converters.clear() call will break the rendering because we removed all of the supported type converters
2. Let's create a new package called model under the src/main/java/com/example/bookpub directory from the root of our project
3. Next we create a class named Isbn under our newly created package directory from the root of our project with the following content:

package com.example.bookpub.model; import org.springframework.util.Assert; public class Isbn { private String eanPrefix; private String registrationGroup; private String registrant; private String publication; private String checkDigit; public Isbn(String eanPrefix, ...