Spring中的SpringApplicationRunListener详细解析

SpringApplication.run(CommonsTestApplication.class, args);
                                                            

public interface SpringApplicationRunListener {
 
	
	void starting();//run方法开始执行，发布ApplicationStartingEvent事件
 
	//环境准备好时，发布ApplicationEnvironmentPreparedEvent事件
	void environmentPrepared(ConfigurableEnvironment environment);
 
    //容器的上下文准备初始化完毕，发布ApplicationContextInitializedEvent
	void contextPrepared(ConfigurableApplicationContext context);
 
	//上下文加载配置时候，对应ApplicationPreparedEvent
	void contextLoaded(ConfigurableApplicationContext context);
 
	//上下文刷新且应用启动时，并且在CommandLineRunner和ApplicationRunners还没唤醒前，发布程序以及启动事件ApplicationStartedEvent
	void started(ConfigurableApplicationContext context);
 
	//在上下文刷新，应用已经启动，在CommandLineRunner和ApplicationRunners唤醒后，并且在run方法快执行结束前执行，发布ApplicationReadyEvent，代表程序已经准备好
	void running(ConfigurableApplicationContext context);
 
	//当运行程序失败时，发布ApplicationFailedEvent事件。
	void failed(ConfigurableApplicationContext context, Throwable exception);
 
}

package com.wzx.listener;
 
import com.wzx.event.TestApplication;
import com.wzx.event.TestApplicationEvent;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.SpringApplicationRunListener;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.env.ConfigurableEnvironment;
 
/**
 * @Description: TODO
 * @author: wengzx
 * @date: 2021年04月14日 16:01
 */
public class TestSpringApplicationRunListener implements SpringApplicationRunListener {
 
    private final SpringApplication application;
 
    private final String[] args;
 
 
 
    public TestSpringApplicationRunListener(SpringApplication application, String[] args1) {
        this.application = application;
        this.args = args1;
    }
 
    @Override
    public void starting() {
        System.out.println("TestSpringApplicationRunListener is starting");
    }
 
    @Override
    public void environmentPrepared(ConfigurableEnvironment environment) {
        System.out.println("TestSpringApplicationRunListener is environmentPrepared");
    }
 
    @Override
    public void contextPrepared(ConfigurableApplicationContext context) {
        System.out.println("TestSpringApplicationRunListener is contextPrepared");
 
    }
 
    @Override
    public void contextLoaded(ConfigurableApplicationContext context) {
 
        System.out.println("TestSpringApplicationRunListener is contextLoaded");
    }
 
    @Override
    public void started(ConfigurableApplicationContext context) {
        System.out.println("TestSpringApplicationRunListener is started");
        TestApplication testApplication = new TestApplication();
        testApplication.setName("zhangsan");
        testApplication.setAge(23);
        TestApplicationEvent testApplicationEvent = new TestApplicationEvent(testApplication);
        context.publishEvent(testApplicationEvent);
    }
 
    @Override
    public void running(ConfigurableApplicationContext context) {
        System.out.println("TestSpringApplicationRunListener is running");
    }
 
    @Override
    public void failed(ConfigurableApplicationContext context, Throwable exception) {
        System.out.println("TestSpringApplicationRunListener is failed");
    }
}