springboot 中怎么利用@Async实现异步调用,很多新手对此不是很清楚,为了帮助大家解决这个难题,下面小编将为大家详细讲解,有这方面需求的人可以来学习下,希望你能有所收获。
添加注解@EnableAsync开启异步调用
package com.demo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.scheduling.annotation.EnableAsync; /** * Hello world! * */ @SpringBootApplication @EnableAsync public class App { public static void main( String[] args ) { SpringApplication.run(App.class,args); } }
在被调用方法上加 @Async
package com.demo.serviceImp; import com.demo.serviceI.DemoService; import org.springframework.scheduling.annotation.Async; public class DemoServiceWindowImp implements DemoService { @Override public String info() { return "window"; } @Override @Async public void print(int i) { System.out.println(i); } }
调用测试
package com.demo.action; import com.demo.serviceI.DemoService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class DemoAction { @Autowired private DemoService demoService; @RequestMapping(value = "health.json") public String healt(){ return "{\"status\":\"UP\",\"diskSpace\":{\"status\":\"UP\",\"total\":249769230336,\"free\":71914618880,\"threshold\":10485760},\"db\":{\"status\":\"UP\",\"database\":\"MySQL\",\"hello\":1}}"; } @RequestMapping(value = "user/info") public String info(){ return demoService.info(); } @RequestMapping(value = "print") public void print(){ for (int i = 0; i < 100; i++) { demoService.print(i); } } }
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