@ConfigurationProperties Spring Boot Configuration Annotation Processor not found in classpath

Question

I try to make completion for custom properties in Spring Boot.

I tried to create a simple project via IntelliJ IDEA 2016.3:

1. Created a new G

Answer 1

For those using Maven or Gradle, just add the dependency on spring-boot-configuration-processor.

Maven:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-configuration-processor</artifactId>
    <optional>true</optional>
</dependency>

Gradle 4.5 and earlier

dependencies {
     compileOnly "org.springframework.boot:spring-boot-configuration-processor"
}

Gradle 4.6 and later

dependencies {
      annotationProcessor "org.springframework.boot:spring-boot-configuration-processor"
}

For more information: "Generating Your Own Metadata by Using the Annotation Processor" https://docs.spring.io/spring-boot/docs/2.3.1.RELEASE/reference/html/appendix-configuration-metadata.html#configuration-metadata-annotation-processor