Spring中的监听器SpringApplicationRunListener详解

public interface SpringApplicationRunListener {

     //刚执行run方法时
    void started();
     //环境建立好时候
    void environmentPrepared(ConfigurableEnvironment environment);
     //上下文建立好的时候
    void contextPrepared(ConfigurableApplicationContext context);
    //上下文载入配置时候
    void contextLoaded(ConfigurableApplicationContext context);
    //上下文刷新完成后，run方法执行完之前
    void finished(ConfigurableApplicationContext context, Throwable exception);

}

org.springframework.boot.SpringApplicationRunListener=com.study.springbootplus.config.MyApplicationRunListener

public class MyApplicationRunListener implements SpringApplicationRunListener {

  private final SpringApplication application;
  private final String[] args;

  public MyApplicationRunListener(SpringApplication sa, String[] args) {
    this.application = sa;
    this.args = args;
  }

  @Override
  public void starting() {
    System.out.println("服务启动RunnerTest  SpringApplicationRunListener的starting方法...");
  }

  @Override
  public void environmentPrepared(ConfigurableEnvironment environment) {
    System.out.println("服务启动RunnerTest  SpringApplicationRunListener的environmentPrepared方法...");
  }

  @Override
  public void contextPrepared(ConfigurableApplicationContext context) {
    System.out.println("服务启动RunnerTest  SpringApplicationRunListener的contextPrepared方法...");
  }

  @Override
  public void contextLoaded(ConfigurableApplicationContext context) {
    System.out.println("服务启动RunnerTest  SpringApplicationRunListener的contextLoaded方法...");
  }

  @Override
  public void running(ConfigurableApplicationContext context) {
    System.out.println("服务启动RunnerTest  SpringApplicationRunListener的running方法...");
  }

  @Override
  public void failed(ConfigurableApplicationContext context, Throwable exception) {
    System.out.println("服务启动RunnerTest  SpringApplicationRunListener的failed方法...");
  }

  @Override
  public void started(ConfigurableApplicationContext context) {
    System.out.println("服务启动RunnerTest  SpringApplicationRunListener的started方法...");
  }
}