spring boot配置

package com.example.demo;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.env.Environment;
import org.springframework.stereotype.Component;

@Component
public class MyAppConfig {
      @Value("${local.ip2:900}")
       private String port;
      @Autowired
      private Environment env;
      public void show(){
          System.out.println("---local.ip="+port);
          System.out.println("---local.ip="+env.getProperty("local.ip","9000"));
      }
}

package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@SpringBootApplication
public class DemoApplication {
    @RequestMapping
   String index(){
      return "hello world index";
   }
// @Bean
// public Runnable createRunnable(){
//    return  ()->{
//       System.out.println(Thread.currentThread().getName()+"run2---");
//       System.out.println(" spring is running");
//    };
// }
   public static void main(String[] args) {

    ConfigurableApplicationContext configurableApplicationContext=SpringApplication.run(DemoApplication.class, args);
//
//     configurableApplicationContext.getBean(Runnable.class).run();
//    System.out.println(Thread.currentThread().getName()+"1run---");
//    System.out.println( configurableApplicationContext.getEnvironment().getProperty("local.ip"));
  configurableApplicationContext.getBean(MyAppConfig.class).show();
  configurableApplicationContext.close();


    }
}