在一个类中调用自己的方法，使用Async是由于AOP的规则，会导致异步失效（static也是失败的）
正确姿势：
将异步方法抽至另一个类中，将其注入到使用类直接掉用即可。
在配置自定义的线程池
package com.demo.config;
import lombok.extern.slf4j.Slf4j;
import org.springframework.aop.interceptor.AsyncUncaughtExceptionHandler;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.scheduling.annotation.AsyncConfigurer;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.stereotype.Component;
import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;
/**
* @author : chenjie
* @date : 2019-11-09 0:12
*/
@Component
@Slf4j
public class AsyncConfig implements AsyncConfigurer {
@Value("${thread.pool.corePoolSize:10}")
private int corePoolSize;
@Value("${thread.pool.maxPoolSize:20}")
private int maxPoolSize;
@Value("${thread.pool.keepAliveSeconds:30}")
private int keepAliveSeconds;
@Value("${thread.pool.queueCapacity:512}")
private int queueCapacity;
@Override
public Executor getAsyncExecutor() {
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(corePoolSize);
executor.setMaxPoolSize(maxPoolSize);
executor.setKeepAliveSeconds(keepAliveSeconds);
executor.setQueueCapacity(queueCapacity);
executor.setWaitForTasksToCompleteOnShutdown(true);
executor.setRejectedExecutionHandler((Runnable r, ThreadPoolExecutor exe) -> {
log.warn("当前任务线程池队列已满.");
});
executor.initialize();
return executor;
}
@Override
public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
return (ex, method, params) -> log.error("线程池执行任务发生未知异常.", ex);
}
}
