2021-05-23

Jar包启动

配置文件位于jar包同目录下可以正常读取

springboot jar运行后自动结束

创建类

import com.example.demo.Test;
import org.springframework.boot.CommandLineRunner;

import javax.annotation.Resource;


public class StartupRunner implements CommandLineRunner {
    @Resource
    private Test test;


    @Override
    public void run(String... args) throws Exception {
        System.out.println("startup runner");
        test.test();
        System.out.println("task finished");
    }
}

application 中

@SpringBootApplication
public class DemoApplication {

    private static Test test;

    @Bean
    public ExitCodeGenerator exitCodeGenerator() {
        return () -> 100;
    }

    public static void main(String[] args) {
        System.exit(SpringApplication
                .exit(SpringApplication.run(DemoApplication.class, args)));
//        SpringApplication.run(DemoApplication.class,args);
//        ApplicationContext applicationContext = SpringContextUtil.getApplicationContext();
//        test = applicationContext.getBean(Test.class);
//        test.test();
    }


    @Bean
    public StartupRunner startupRunner(){
        System.out.println("startUpRunner");
        return new StartupRunner();
    }
}

main 方法注入service
创建类

@Component
public class SpringContextUtil implements ApplicationContextAware {
    private static ApplicationContext applicationContext = null;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if (SpringContextUtil.applicationContext == null) {
            SpringContextUtil.applicationContext = applicationContext;
        }
    }

    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    public static Object getBean(String name) {
        return getApplicationContext().getBean(name);
    }

    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }

    public static <T> T getBean(String name, Class<T> clazz) {
        return getApplicationContext().getBean(name, clazz);
    }
}

main

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class,args);
        ApplicationContext applicationContext = SpringContextUtil.getApplicationContext();
        test = applicationContext.getBean(Test.class);
        test.test();
    }