Employee class needs default constructor

[ocarlsen]

Employee class needs default constructor for JPA. Otherwise you will get an org.hibernate.InstantiationException: No default constructor for entity exception at the step to curl -v localhost:8080/employees.

[Lance-Drane]

This annotation should be added to Employee.java (and a similar one for Order.java):

@NoArgsConstructor(access = AccessLevel.PRIVATE)

[Allianzcortex]

@gregturn @joshlong Please merge this fix ASAP ！！😭😭 I nearly waste my whole night. I generate the spring boot based on the instruction but find it cannot work, while the source code I download can provide the function. After debugging all night I find that it is the version issue. For

<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.1.RELEASE</version>
	</parent>

Only 2.1.1 can't work.Other version(even 2.1.0) can work well.

[gregturn]

Resolved via #77.