<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
            </plugin>

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.scheduling.annotation.EnableAsync;

@SpringBootApplication
//扫描整个com.zjdfwl.mall包
@ComponentScan(basePackages = "com.zjdfwl.mall")
//只要要@EnableAsync就可以使用多线程。使用@Async就可以定义一个线程任务。
@EnableAsync
public class GunsRestApplication {
    public static void main(String[] args) {
        SpringApplication.run(GunsRestApplication.class, args);
    }

}