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3.9. 打印环境变量

		
package cn.netkiller;


import jakarta.annotation.PostConstruct;
import jakarta.annotation.PreDestroy;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.scheduling.annotation.EnableAsync;

@SpringBootApplication
@EnableJpaRepositories
@EnableAutoConfiguration
@EnableAsync
public class Application {
    private static final Logger logger = LoggerFactory.getLogger(Application.class);

    public static void main(String[] args) {
        System.out.println("Watch interface start...");
        SpringApplication.run(Application.class, args);
    }

    @Bean
    ApplicationRunner applicationRunner(Environment environment) {
        return args -> {
            // log.info("our database URL connection will be " +
            // environment.getProperty("spring.datasource.url"));
            System.out.println(environment.getProperty("spring.application.name"));
        };
    }
}