bootstrap-spring-annotation-based-gradle-application-without-spring-boot

AppConfig.java

package org.coderearth.springkitchens.mailkitchen;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;

import java.io.IOException;
import java.util.Properties;

/**
 * Created by kunal_patel on 24/10/17.
 * SomeBean and SomeAnotherBean are just placeholder to showcase bean creation - replace it with actual stuff.
 */
@Configuration
@ComponentScan(basePackages = "org.coderearth.springkitchens.mailkitchen")
public class AppConfig {

    @Bean
    public SomeBean createSomeBean() {
        return new SomeBean();
    }
  
    @Bean
    public SomeAnotherBean createSomeAnotherBean(final SomeBean someBeanInstance) {
        return new SomeAnotherBean(someBeanInstance);
    }
}

build.gradle

group 'org.coderearth.springkitchens'
version '0.0.1-SNAPSHOT'


apply plugin: 'java'
apply plugin: 'application'

sourceCompatibility = 1.8
targetCompatibility = 1.8

repositories {
    jcenter()
    mavenCentral()
}

dependencies {
    compile("org.springframework:spring-context:4.3.12.RELEASE")
    // compile("org.springframework:spring-context-support:4.3.12.RELEASE")
    
    compile("ch.qos.logback:logback-classic:1.1.11")
    compile("org.slf4j:jcl-over-slf4j:1.7.25")

    testCompile 'junit:junit:4.12'
}

mainClassName = 'org.coderearth.springkitchens.mailkitchen.MainApplication'

MainApplication.java

package org.coderearth.springkitchens.mailkitchen;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.util.Assert;

public class MainApplication {
    
    private static final Logger LOGGER = LoggerFactory.getLogger(MainApplication.class);
    
    public static void main(String[] args) {
        LOGGER.info("Staring up MainApplication !!");
        final ApplicationContext context = new AnnotationConfigApplicationContext(AppConfig.class);
        Assert.notNull(context, "ApplicationContext is not yet initialized !!");
        Assert.notNull(context.getBean(SomeBean.class), "SomeBean is not yet initialized !!");
        LOGGER.info("Shutting down MainApplication !!");
    }
    
}