question：使用@Async异步注解时会丢失当前request请求头数据, 配置该类可以防止丢失

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@Configuration
public class AsyncConfig extends AsyncConfigurerSupport {
 
    public class ContextAwareCallable<T> implements Callable<T> {
        private Callable<T> task;
        private RequestAttributes context;
 
        public ContextAwareCallable(Callable<T> task, RequestAttributes context) {
            this.task = task;
            this.context = context;
        }
 
        @Override
        public T call() throws Exception {
            if (context != null) {
                RequestContextHolder.setRequestAttributes(context);
            }
            try {
                return task.call();
            } finally {
                RequestContextHolder.resetRequestAttributes();
            }
        }
    }
 
    public class ContextAwarePoolExecutor extends ThreadPoolTaskExecutor {
        @Override
        public <T> Future<T> submit(Callable<T> task) {
            return super.submit(new ContextAwareCallable(task, RequestContextHolder.currentRequestAttributes()));
        }
 
        @Override
        public <T> ListenableFuture<T> submitListenable(Callable<T> task) {
            return super.submitListenable(new ContextAwareCallable(task, RequestContextHolder.currentRequestAttributes()));
        }
    }
 
 
    @Override
    @Bean
    public Executor getAsyncExecutor() {
        return new ContextAwarePoolExecutor();
    }
 
 
}

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原文链接：https://blog.csdn.net/zhangshuo1996123/article/details/124861692