Question

目前我正在尝试下面的代码。问题是在超时（5秒）catch（TimeoutException e）块正在执行但无法取消执行查询。我希望在超时后取消执行并继续下一部分代码。

                    ExecutorService executor = Executors.newSingleThreadExecutor();
                    Future<String> future = executor.submit(new Callable() {
                        public String call() throws Exception {

                            System.out.println("task running!");
                            ResultSet rs = psLoadingStr.executeQuery();
                            return "OK";
                        }
                    });

                    try 
                    {
                        future.get(5, TimeUnit.SECONDS); //timeout is in 5 seconds
                    } 
                    catch (TimeoutException e) 
                    {
                        System.err.println("Timeout");
                        future.cancel(true);
                    }
                    executor.shutdownNow();

Answer 1

您可以在执行查询时设置超时。如果查询没有及时完成并超时，则抛出SQLException：

preparedstatement.setQueryTimeout(seconds);
ResultSet resultSet = preparedStatement.executeQuery();

while( resultSet.next() ){
     // do some stuff
}

看看setQueryTimeout documentation

如何在超时后停止执行查询

1 个答案: