步驟，如圖所示：

1.添加異步任務業務類

package top.ytheng.demo.task;import java.util.concurrent.Future;import org.springframework.scheduling.annotation.Async;import org.springframework.scheduling.annotation.AsyncResult;import org.springframework.stereotype.Component;//異步任務業務類@Component//標記此類是異步類，也可在方法中標記//不加，則類里面的方法為同步執行@Asyncpublic class AsyncTask { public void task1() throws InterruptedException { long begin = System.currentTimeMillis(); Thread.sleep(1000); long end = System.currentTimeMillis(); System.out.println('任務1耗時：' + (end - begin)); } public void task2() throws InterruptedException { long begin = System.currentTimeMillis(); Thread.sleep(2000); long end = System.currentTimeMillis(); System.out.println('任務2耗時：' + (end - begin)); } public void task3() throws InterruptedException { long begin = System.currentTimeMillis(); Thread.sleep(3000); long end = System.currentTimeMillis(); System.out.println('任務3耗時：' + (end - begin)); } //測試拿到返回結果 public Future<String> task4() throws InterruptedException { long begin = System.currentTimeMillis(); Thread.sleep(1000); long end = System.currentTimeMillis(); System.out.println('任務4耗時：' + (end - begin)); return new AsyncResult<String>('任務4'); } public Future<String> task5() throws InterruptedException { long begin = System.currentTimeMillis(); Thread.sleep(2000); long end = System.currentTimeMillis(); System.out.println('任務5耗時：' + (end - begin)); return new AsyncResult<String>('任務5'); } public Future<String> task6() throws InterruptedException { long begin = System.currentTimeMillis(); Thread.sleep(3000); long end = System.currentTimeMillis(); System.out.println('任務6耗時：' + (end - begin)); return new AsyncResult<String>('任務6'); }}

2.添加測試控制器

package top.ytheng.demo.controller;import java.util.concurrent.ExecutionException;import java.util.concurrent.Future;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import top.ytheng.demo.task.AsyncTask;@RestController@RequestMapping('api/v1/async')public class TaskController { @Autowired private AsyncTask asyncTask; @GetMapping('/test') public Object test() throws InterruptedException, ExecutionException { long begin = System.currentTimeMillis(); //asyncTask.task1(); //asyncTask.task2(); //asyncTask.task3(); Future<String> result1 = asyncTask.task4(); Future<String> result2 = asyncTask.task5(); Future<String> result3 = asyncTask.task6(); System.out.println('返回結果:' + result1.get() + ',' + result2.get() + ',' + result3.get()); for(;;) { if(result1.isDone() && result2.isDone() && result3.isDone()) {break; } } long end = System.currentTimeMillis(); long total = end - begin; System.out.println('總耗時：' + total); return '總耗時:' + total; }}

3.添加啟動類

package top.ytheng.demo;import org.mybatis.spring.annotation.MapperScan;import org.springframework.scheduling.annotation.EnableAsync;import org.springframework.scheduling.annotation.EnableScheduling;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.boot.web.servlet.ServletComponentScan;@SpringBootApplication //等于下面3個//@SpringBootConfiguration//@EnableAutoConfiguration//@ComponentScan//攔截器用到@ServletComponentScan//MyBatis用到@MapperScan('top.ytheng.demo.mapper')//定時使用(開啟定時任務)@EnableScheduling//開啟異步任務@EnableAsyncpublic class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); }}

4.右鍵項目Run As啟動，訪問url

http://localhost:8080/api/v1/async/test

結果：

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持好吧啦網。