SpringBoot中使用@Async实现异步任务调用详解

package com.example.asynctask.asynvtask;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Component;
/**
 * @description
 * @date 2019/4/19 11:20
 */
@Component
public class Asynctask {
    // 任务一
    @Async
    public void doTaskOne() throws Exception {
        System.out.println("开始做任务一");
        long start = System.currentTimeMillis();
        Thread.sleep(3000);
        long end = System.currentTimeMillis();
        System.out.println("完成任务一，耗时：" + (end - start) + "毫秒");
    }
    // 任务二
    @Async
    public void doTaskTwo() throws Exception {
        System.out.println("开始做任务二");
        long start = System.currentTimeMillis();
        Thread.sleep(5000);
        long end = System.currentTimeMillis();
        System.out.println("完成任务二，耗时：" + (end - start) + "毫秒");
    }
    // 任务3
    @Async
    public void doTaskThree() throws Exception {
        System.out.println("开始做任务三");
        long start = System.currentTimeMillis();
        Thread.sleep(8000);
        long end = System.currentTimeMillis();
        System.out.println("完成任务三，耗时：" + (end - start) + "毫秒");
    }
}

package com.example.asynctask;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableAsync;
@SpringBootApplication
@EnableAsync
public class AsynctaskApplication {
	public static void main(String[] args) {
		SpringApplication.run(AsynctaskApplication.class, args);
	}
}

package com.example.asynctask.controller;
import com.example.asynctask.asynvtask.Asynctask;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.annotation.Resource;
/**
 * @description @Async 注解实现异步任务
 * @date 2019/4/19 11:20
 */
@RestController
@RequestMapping("/test")
public class AsynctaskController {
    @Resource
    private Asynctask asynctask;
    @RequestMapping("/task")
    public String task2() throws Exception {
        asynctask.doTaskOne();
        asynctask.doTaskTwo();
        asynctask.doTaskThree();
        return "===== test ok =====";
    }
}