直接上代碼
線程配置類
package zengmg.nbpi.com.thread;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import java.util.concurrent.Executor;
/**
* @Auther 松門一枝花
* @Date 2020/5/28
*/
@Configuration
@EnableAsync // 啓用異步任務
public class AsyncConfiguration {
// 聲明一個線程池(並指定線程池的名字)
@Bean("nbpiTaskExecutor")
public Executor asyncExecutor() {
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
//核心線程數:線程池創建時候初始化的線程數
executor.setCorePoolSize(5);
//最大線程數:線程池最大的線程數,只有在緩衝隊列滿了之後纔會申請超過核心線程數的線程
executor.setMaxPoolSize(500);
//允許線程的空閒時間60秒:當超過了核心線程出之外的線程在空閒時間到達之後會被銷燬
executor.setKeepAliveSeconds(60);
//線程池名的前綴:設置好了之後可以方便我們定位處理任務所在的線程池
executor.setThreadNamePrefix("DailyAsync-");
executor.initialize();
return executor;
}
}
服務類
package zengmg.nbpi.com.thread;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
/**
* @Auther 松門一枝花
* @Date 2020/5/28
*/
@Service
public class CustomMultiThreadingService {
private static final Logger logger = LoggerFactory.getLogger(CustomMultiThreadingService.class);
/*
如何讓異步調用的執行任務使用這個線程池中的資源來運行呢?方法非常簡單,我們只需要在@Async註解中指定線程池名即可
*/
@Async("nbpiTaskExecutor")
public void executeAysncTask(Integer i) throws InterruptedException {
logger.info("CustomMultiThreadingService ==> executeAysncTask1 method: 執行異步任務{} ", i);
Thread.sleep(500L);
}
}
控制類
package zengmg.nbpi.com.thread;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
/**
* @Auther 松門一枝花
* @Date 2020/5/28
*/
@Controller
@RequestMapping(value="/multithreading")
public class CustomMultiThreadingController {
@Autowired
private CustomMultiThreadingService customMultiThreadingService;
@ResponseBody
@RequestMapping("/dotask")
public String doTask() {
try {
for (int i=0;i<100000;i++){
customMultiThreadingService.executeAysncTask(i);
}
} catch (InterruptedException e) {
e.printStackTrace();
}
return "success";
}
}
運行效果
異步方法和調用方法一定要寫在不同的類中
,如果寫在一個類中,是沒有效果的!