Why can't generate JPA metamodel?-CodePudding

Want to use the JPA criteria structure dynamic query, in which the step is to class the entity to generate the corresponding class entity_, there are two methods:
1, in the Settings checked the annotation processors
2, in pom. Write maven plugin within XML

2, want to use the plugin online there are many types of writing, no matter which one to use, build project, rebuild project, maven compile, have generated class entity_

Have tried the following plugin writing (1-3 with maven - compiler - plugin) :

1,2.1. 2. The Usage with Maven

 
 
 Maven - compiler - plugin 
 
 1.6 & lt;/source> 
 1.6 & lt;/target> 
 
 Org. Hibernate. Jpamodelgen. JPAMetaModelEntityProcessor

2, the JPA Criteria the Metamodel Generation and Usage Guide

 
 
 Org, apache maven. Plugins 
 Maven - compiler - plugin 
 ${maven - compiler - plugin. Version} & lt;/version> 
 
 
 
 Org. Hibernate 
 Hibernate - jpamodelgen 
 The ${hibernate. Version} & lt;/version>

3, Hibernate JAP Metamodel (the Metamodel)

 
 
 Org, apache maven. Plugins 
 Maven - compiler - plugin 
 3.7.0 & lt;/version> 
 
 1.8 & lt;/source> 
 1.8 & lt;/target> 
 
 
 Org. Hibernate 
 Hibernate - jpamodelgen 
 5.4.3. Final 
 
 
 The target/metamodel

4, Hibernate Tips: How to automatically add the Metamodel classes to project

 
 
 Org. Codehaus. Mojo 
 The build helper - maven - plugin 
 3.0.0 & lt;/version> 
 
 
 Add - source 
 The generate - sources 
 
 Add - source 
 
 
 
 The target/generated sources/annotations

5, JPA Hibernate the Metamodel generation through maven (master answer the main two are tried)

1-3 with maven - compiler - the plugin, always: [INFO] Nothing to compile - all classes are up to date
No matter use what kind of writing, in addition to hint to fill & lt; Version> The compiler, did not stop the ERROR or WARNING

Excuse me:
1, since can all sorts of writing are clear, I set up less?
2, maven -- the compiler plugin writing is concise, how to set up correctly?

Plagued, comment, thank you so much

Environment:
JDK 1.8
Kotlin 1.3.72
The IDEA of community edition 2018.3.6
Spring 5.2.13 (core, context, data - such as jpa, with the version number)
Hibernate 5.4.30 (core, jpamodelgen entitymanager etc., with the version number)
Maven 3.3.9