Question

当我从Eclipse运行main方法时，我有一个javaFx应用程序完全没问题。但是，当我将应用程序转换为可执行文件.jar并运行.jar时，当我单击使用FileChoose选择文件的按钮时，我收到此错误。

＆＃34;线程中的异常＆＃34;线程-20＆＃34; java.lang.IllegalStateException：仅在事件线程上允许此操作; currentThread = Thread-20＆＃34;

这是我的代码，当我从eclipse运行应用程序时，这个代码再次运行良好，而不是当它转换为.jar时。我使用eclipse将应用程序转换为jar。

public void uploadMessagesButtonActionPerformed(ActionEvent event) {
    if(uploadCSVThread.isAlive()) {
        uploadCSVThread.interrupt();
        try {
            uploadCSVThread.join();
        } catch(InterruptedException e) {
            e.printStackTrace();
        }
    }

    uploadCSVThread = new Thread() {
        public void run() {
            Platform.runLater( new Runnable() {
                public void run() {
                    loader.setProgress(0.0);
                    loader.setVisible(true);
                }
            });

            FileChooser currUploadFile = new FileChooser();
            File selectedFile = currUploadFile.showOpenDialog(null);
            if(selectedFile != null) {
                System.out.println(selectedFile.getPath());

                try {
                    FileReader currRdr = new FileReader(selectedFile);
                    CSVReader currReader = new CSVReader(currRdr);
                    final ArrayList<String[]> listOfMessages = (ArrayList<String[]>) currReader.readAll();
                    for(int i = 0; i < listOfMessages.size(); i++) {
                        final int x = i;
                        String[] shipmentMessages = listOfMessages.get(i);
                        //String[] shipmentMessages = currReader.readNext();
                        //while(shipmentMessages != null) { 
                        /*for(int i = 0; i < shipmentMessages.length; i++) {
                            System.out.println("shipmentMessages -> " + shipmentMessages[i]);
                        }*/
                        Map<String, String> headers = createHeaderMapFromHeaderString(shipmentMessages[0], "\n");
                        String body = shipmentMessages[1];
                        shipmentMessages = currReader.readNext();

                        try {
                            /*ObjectName queue = new ObjectName("org.apache.activemq:type=Broker,brokerName=" + currentBrokerName
                                                           + ",destinationType=Queue,destinationName=" + VM_AND_DIRECTVM_Q);*/
                            //headers.put("TO_DESTINATION", returnSelectedEndpoints());
                            QueueViewMBean queueView = (QueueViewMBean) MBeanServerInvocationHandler.newProxyInstance(conn,
                                                                                                                      currentQueue,
                                                                                                                      QueueViewMBean.class,
                                                                                                                      true);
                            queueView.sendTextMessage(headers, body, serverLookUp.serverUserNameLookUp(currentServer), serverLookUp.serverPasswordLookUp(currentServer));
                            Platform.runLater( new Runnable() {
                                public void run() {
                                    loader.setProgress((double)x/(double)listOfMessages.size());
                                }
                            });

                        } catch (MalformedObjectNameException e) {
                            logger.error(e);
                        }
                    }

                    updateQueueInList(currentQueue, currentQueueIndx, true);
                    readQueue(conn, currentQueue);
                    loader.setVisible(false);   
                } catch (Exception e) {
                    messageCouldntSendPopUpBox.setVisible(true);
                    logger.error(e);
                }
            }
            loader.setVisible(false);
        }
    };  
    uploadCSVThread.start();
}

Answer 1

有点长，所以感动了回答。我误读了你的大括号;它当然是在自己的线程中。我会在您的捕获中添加一些e.printStackTrace()，以准确找到您遇到错误的位置。看来你的一个方法调用在你的线程体内是无效的。如果您找到了该位置但仍无法弄清楚，请更新您的帖子告诉我们。否则，您可能希望查看使用Task个对象

当应用程序转换为.jar时，FileChooser不工作

1 个答案: