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注意一点！这是springboot的独有监听器，跟的监听器无关！

有四个重要的类对应不同的监听功能：

package org.lzl.bootjpa.listener;import org.springframework.context.ApplicationContextInitializer;import org.springframework.context.ConfigurableApplicationContext;public class HelloApplicationContextInitializer implements ApplicationContextInitializer {
       @Override    public void initialize(ConfigurableApplicationContext applicationContext) {
           System.out.println("ApplicationContextInitializer....initialize"+applicationContext);    }}

package org.lzl.bootjpa.listener;import org.springframework.boot.SpringApplication;import org.springframework.boot.SpringApplicationRunListener;import org.springframework.context.ConfigurableApplicationContext;import org.springframework.core.env.ConfigurableEnvironment;public class HelloSpringApplicationRunListener implements SpringApplicationRunListener {
   //注意要加该构造器！！！！！！！！！    public HelloSpringApplicationRunListener(SpringApplication application,String[] args){
       }    @Override    public void starting() {
           System.out.println("SpringApplicationRunListener.....starting....");    }    @Override    public void environmentPrepared(ConfigurableEnvironment environment) {
           Object o = environment.getSystemProperties().get("os.name");        System.out.println("springApplicationRunListener.....environmentPrepared....."+o);    }    @Override    public void contextPrepared(ConfigurableApplicationContext context) {
           System.out.println("SpringApplicationRunListener.....contextPrepared....");    }    @Override    public void contextLoaded(ConfigurableApplicationContext context) {
           System.out.println("SpringApplicationRunListener.....contextLoaded....");    }    @Override    public void started(ConfigurableApplicationContext context) {
           System.out.println("SpringApplicationRunListener.....started....");    }    @Override    public void running(ConfigurableApplicationContext context) {
           System.out.println("SpringApplicationRunListener.....running....");    }    @Override    public void failed(ConfigurableApplicationContext context, Throwable exception) {
           System.out.println("SpringApplicationRunListener.....failed....");    }}

后面两个：

package org.lzl.bootjpa.listener;import org.springframework.boot.ApplicationArguments;import org.springframework.boot.ApplicationRunner;import org.springframework.stereotype.Component;@Componentpublic class HelloApplicationRunner implements ApplicationRunner {
       @Override    public void run(ApplicationArguments args) throws Exception {
           System.out.println("Application...run....");    }}

package org.lzl.bootjpa.listener;import org.springframework.boot.CommandLineRunner;import org.springframework.stereotype.Component;import java.lang.reflect.Array;import java.util.Arrays;@Componentpublic class HelloCommandLineRunner implements CommandLineRunner {
       @Override    public void run(String... args) throws Exception {
           System.out.println("commandLineRunner.....run...."+ Arrays.asList(args));    }}

至于前面两个字母在META-INF/spring.factories中配置：

org.springframework.context.ApplicationContextInitializer=\org.lzl.bootjpa.listener.HelloApplicationContextInitializerorg.springframework.boot.SpringApplicationRunListener=\org.lzl.bootjpa.listener.HelloSpringApplicationRunListener

现在已经配置完毕！启动ioc容器：出现下面的的东西：证明配置成功！