java异步在项目中的使用

比眉伴天荒 2022-05-23 08:16 194阅读 0赞

/** * 测试异步的执行文件上传,可以成功的支持多线程和异步 * @author he_guanhong * */
    @Component
    public class AsyncTaskFileUploadTaskService { 
    
        @Autowired
        private FileUpLoadTaskService fileUpLoadTaskService;
    
        @Async
        public void excuteAsyncTaskFileUpload(FileOfBillWrap fileOfBillWrap){
            try {
                fileUpLoadTaskService.uploadFileToWuzhong(fileOfBillWrap);
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    
        @Async
        public Future<Boolean> excuteAsyncTaskFileUploadWithResult(FileOfBillWrap fileOfBillWrap){
            boolean result = false;
            try {
                result = fileUpLoadTaskService.uploadFileToWuzhong(fileOfBillWrap);
                return new AsyncResult<Boolean>(result);
            } catch (Exception e) {
                e.printStackTrace();
            }
            return new AsyncResult<Boolean>(result);
        }
    }

执行异步任务

try {
                            System.out.println("Invoking an asynchronous method. "+ Thread.currentThread().getName());
                            //fileUpLoadTaskService.uploadFileToWuzhong(fileOfBillWrap);
                            /** * Result from asynchronous process - true Invoking an asynchronous method. pool-3-thread-1 Continue doing something else. */
                            Future<Boolean> future = asyncTaskFileUploadTaskService.excuteAsyncTaskFileUploadWithResult(fileOfBillWrap);
                            while (true) {  ///这里使用了循环判断，等待获取结果信息
                                if (future.isDone()) {  //判断是否执行完毕
                                    System.out.println("Result from asynchronous process - " + future.get());
                                    break;
                                }
                                System.out.println("Continue doing something else. ");
                                Thread.sleep(1000);
                            }
                        } catch (Exception e) {
                            continue;
                        }