SpringBoot spring-boot-configuration-processor doesn't work with Lombok @Value and @ConstructorBinding

Hi,

i have the following configuration class:

@ConfigurationProperties(prefix = "application")
@ConstructorBinding
@Value
class FooConfigurationProperties {
    /**
     * URL of the endpoint.
     */
    @NonNull
    URI endpoint;
}

I have included the spring-boot-configuration-processor in maven:

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

i also have lombok in my project:

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <scope>provided</scope>
        </dependency>

When building the project, i get a META-INF/spring-configuration-metadata.json generated, but only the "groups": [ section is filled, not the "properties": [, it's an empty array. The autocompletion in IntelliJ doesn't work.

When rewriting the config class to:

@ConfigurationProperties(prefix = "application")
@Data
@NoArgsConstructor(access = AccessLevel.PRIVATE)
@AllArgsConstructor
class FooConfigurationProperties {
    /**
     * URL of the endpoint.
     */
    @NonNull
    private String endpoint;
}

everything works as expected.

Spring Boot Version: 2.3.3

Comment From: phxql

If i switch the order of lombok and the spring processor around (lombok before spring), then i get this json:

  "properties": [
    {
      "name": "application.arg0",
      "type": "java.net.URI",
      "sourceType": "path.to.package.FooConfigurationProperties"
    },

arg0 doesn't seem right.

i have enabled parameters in the compiler plugin via

    <properties>
        <maven.compiler.parameters>true</maven.compiler.parameters>
    </properties>

Comment From: wilkinsona

The ordering of the processors is important, otherwise our annotation processor cannot see the changes made by Spring. The arg0 name is due to a limitation of Lombok. Please see https://github.com/spring-projects/spring-boot/issues/18730 for more details.