SpringBoot笔记系列：（十八）异步调用

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SpringBoot中使用异步调用

1. 在Spring Boot的启动类中加入@EnableAsync注解，启用异步调用配置

   package top.pcstar.springboothelloworld;
   
   import org.springframework.boot.SpringApplication;
   import org.springframework.boot.autoconfigure.SpringBootApplication;
   import org.springframework.scheduling.annotation.EnableAsync;
   import org.springframework.scheduling.annotation.EnableScheduling;
   
   /**
    * @Author: PanChao
    * @Description: 启动类
    * @Date: Created in 12:56 2018/5/29
    */
   //@EnableAutoConfiguration
   //@ComponentScan(basePackages = "top.pcstar.springboothelloworld.controller")
   //@EntityScan("top.pcstar.springboothelloworld.entity")
   //@EnableJpaRepositories("top.pcstar.springboothelloworld.dao")
   @SpringBootApplication
   @EnableScheduling
   @EnableAsync
   public class App {
       public static void main(String[] args) {
           SpringApplication.run(App.class, args);
       }
   }
   

2. 在需要异步执行的方法上加入@Async注解

   package top.pcstar.springboothelloworld.service.impl;
   
   import org.springframework.scheduling.annotation.Async;
   import org.springframework.stereotype.Service;
   import top.pcstar.springboothelloworld.service.AsyncService;
   
   import java.util.concurrent.TimeUnit;
   
   /**
    * @Author: PanChao
    * @Description:
    * @Date: Created in 20:09 2018/7/22
    */
   @Service
   public class AsyncServiceImpl implements AsyncService {
       @Async
       @Override
       public String asyncMethod() throws InterruptedException {
           System.out.println("asyncMethod开始");
           TimeUnit.SECONDS.sleep(1);
           System.out.println("asyncMethod结束");
           return "success";
       }
   }
   

3. 在Controller中调用异步方法

   package top.pcstar.springboothelloworld.controller;
   
   import org.springframework.beans.factory.annotation.Autowired;
   import org.springframework.web.bind.annotation.RequestMapping;
   import org.springframework.web.bind.annotation.RestController;
   import top.pcstar.springboothelloworld.service.AsyncService;
   
   /**
    * @Author: PanChao
    * @Description:
    * @Date: Created in 20:02 2018/7/22
    */
   @RestController
   public class AsyncController {
       @Autowired
       private AsyncService asyncMethod;
       @RequestMapping("testAsync")
       public String testAsync(){
           System.out.println("testAsync开始");
           try {
               asyncMethod.asyncMethod();
           } catch (InterruptedException e) {
               e.printStackTrace();
           }
           System.out.println("testAsync结束");
           return "success";
       }
   }
   

SpringBoot笔记系列目录