@Async异步调用示例

线程池配置

package com.ruoyi.framework.config;

import com.ruoyi.common.utils.Threads;
import org.apache.commons.lang3.concurrent.BasicThreadFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadPoolExecutor;

/**
 * 线程池配置
 *
 * @author ruoyi
 **/
@Configuration
public class ThreadPoolConfig
{
    // 核心线程池大小
    private int corePoolSize = 2;

    // 最大可创建的线程数
    private int maxPoolSize = 2;

    // 队列最大长度
    private int queueCapacity = 1000;

    // 线程池维护线程所允许的空闲时间
    private int keepAliveSeconds = 300;

    @Bean(name = "threadPoolTaskExecutor")
    public ThreadPoolTaskExecutor threadPoolTaskExecutor()
    {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setMaxPoolSize(maxPoolSize);
        executor.setCorePoolSize(corePoolSize);
        executor.setQueueCapacity(queueCapacity);
        executor.setKeepAliveSeconds(keepAliveSeconds);
        // 线程池对拒绝任务(无线程可用)的处理策略
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        return executor;
    }
}

异步类

@Component
public class AsyncTxtUtil
{
    private static final Logger log = LoggerFactory.getLogger(AsyncTxtUtil.class);

    @Async("threadPoolTaskExecutor")
    public void sendMessage1() {
        log.info("发送短信方法---- 1   执行开始");
        try {
            Thread.sleep(20000); // 模拟耗时
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
        log.info("发送短信方法---- 1   执行结束");
    }
}

调用类

@Service
public class TDayServiceImpl{
    @Autowired
    private AsyncTxtUtil asyncTxtUtil;
    
    public String importDay() {
        String path = "E:/project/ruo-yi-vue/stock/";
        File[] childrenFiles = new File(path).listFiles();
        for (File childFile : childrenFiles) {
            asyncTxtUtil.sendMessage1(); // 发短信的方法   1
        }
    }
}

启动类加@EnableAsync

@SpringBootApplication(exclude ={DataSourceAutoConfiguration.class})
//开启多线程
@EnableAsync
public class RuoYiApplication {
    public static void main(String[] args) {
        SpringApplication.run(RuoYiApplication.class, args);
    }
}

@Async调用失败，调异步方法和异步方法在同一个类
https://blog.csdn.net/weixin_44371237/article/details/132673310