Automate Spring Boot Starter Setup with mica-auto

Introduction

mica-auto is a core component of the Spring Cloud microservice framework Mica, used to generate basic configurations for Spring Boot starters.

Features

Generate spring.factories.

Generate spring-devtools.properties.

Add FeignClient entries to spring.factories for automatic Feign configuration in mica-cloud.

Generate Java SPI configuration, requiring the @AutoService annotation.

@AutoContextInitializer: ApplicationContextInitializer

@AutoListener: ApplicationListener

@AutoRunListener: SpringApplicationRunListener

@AutoEnvPostProcessor: EnvironmentPostProcessor

@AutoFailureAnalyzer: FailureAnalyzer

@Component: EnableAutoConfiguration

@AutoService: Java SPI configuration

Change Log

Added support for SpringApplicationRunListener.

Added support for EnvironmentPostProcessor.

Upgraded Spring Boot to 2.2.6.RELEASE.

Usage

Note: If your project uses Lombok, place the mica-auto dependency after Lombok.

Maven

<dependency>
  <groupId>net.dreamlu</groupId>
  <artifactId>mica-auto</artifactId>
  <version>1.2.1</version>
  <scope>provided</scope>
</dependency>

Gradle ≥ 5.x

annotationProcessor("net.dreamlu:mica-auto:1.2.1")

Gradle < 5.x

compileOnly "net.dreamlu:mica-auto:1.2.1"

Java SPI Example

package foo.bar;

import javax.annotation.processing.Processor;

@AutoService(Processor.class)
public class MyProcessor implements Processor {
    // …
}

The AutoService annotation automatically generates the SPI configuration file META-INF/services/javax.annotation.processing.Processor with the content:

foo.bar.MyProcessor

Usage Scenarios

Spring Boot starter development tool that automatically generates spring.factories and spring-devtools.properties configurations.

Automatic configuration for sub‑modules in multi‑module projects where package names differ (not recommended for the main project).

Automatic generation of Java SPI extension configurations.