spring注解@Async完成异步任务

1.在启动类上添加注解@EnableAsync。

@EnableAsync
@SpringBootApplication
public class DemoApplication {
    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }
}

2.在要执行的方法上添加注解 @Async

import org.springframework.scheduling.annotation.Async;

 @Async
 public void testAsyncMethods() {
      for (int i = 0; i < 100; i++) {
          System.out.println("----testAsyncMethods----"+i);
      }
  }

3.在controller层测试调用。

@Autowired
private TestService testService;

@GetMapping("/list")
public String list() {
     testService.testAsyncMethods();
     for (int i = 0; i < 10; i++) {
         System.out.println("----list----"+i);
     }
     return "helloworld";
 }