Spring异步Async的配置

1. 编写线程池配置类

   @Slf4j
   @EnableAsync
   @Configuration
   public class AsyncConfig implements AsyncConfigurer {
       // 注意这里需要使用
       @Bean
       @Override
       public Executor getAsyncExecutor() {
           ThreadPoolTaskExecutor threadPool = new ThreadPoolTaskExecutor();
           threadPool.setCorePoolSize(50);
           threadPool.setMaxPoolSize(100);
           threadPool.setKeepAliveSeconds(10);
           threadPool.setQueueCapacity(1000);
           threadPool.setThreadNamePrefix("custom-task-pool-");
           //
           threadPool.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
           threadPool.setAwaitTerminationSeconds(5);
           threadPool.setWaitForTasksToCompleteOnShutdown(true);
           threadPool.initialize();
           return threadPool;
       }
       /**
        * 1. 当方法返回Future，手动调用feature.get则不会回调handleUncaughtException方法
        * 2. 当方法返回Future时，如果不调用手动调用feature.get则异常无法正常抛出
        */
       @Override
       public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
           return new CustomAsyncUncaughtExceptionHandler();
       }
       /**
        * 自定义异步异常处理器
        */
       static class CustomAsyncUncaughtExceptionHandler implements AsyncUncaughtExceptionHandler {
           @Override
           public void handleUncaughtException(Throwable ex, Method method, Object... params) {
               //此demo只打印日志，实际项目以具体业务需求来处理
               log.error(">>> CustomAsyncUncaughtExceptionHandler,class:{}, method: {}, params: {}, error: {}",
                       method.getDeclaringClass().getSimpleName(), method.getName(), Arrays.toString(params),
                       ex.getMessage());
           }
       }
   }
   

2. 编写业务验证方法(方法上使用@Async注解标注)

   @Slf4j
   @Service
   public class AsyncServiceImpl {
       @Async("getAsyncExecutor")
       public Future<String> asyncImport(List<String> list, String taskId) {
           log.info("异步导入工作进行中, 请耐性等待...");
           if (list.size() > 10){
               int i = 1 / 0;
           }
           CommonUtil.sleepQuiet(2000);
           String uuid = CommonUtil.uuid();
           return new AsyncResult<>(uuid) ;
       }
       @Async("getAsyncExecutor")
       public void asyncImportVoid(List<String> list, String taskId) {
           log.info("异步导入工作进行中, 请耐性等待...");
           if (list.size() > 10){
               int i = 1 / 0;
           }
           CommonUtil.sleepQuiet(3000);
       }
   }