java - 应用程序转换为 .jar 时 FileChooser 不工作

Question

这个问题已经有答案了:

Why am I getting java.lang.IllegalStateException "Not on FX application thread" on JavaFX? (3 个回答)

已关闭 7 年前。

我有一个 javaFx 应用程序，当我从 Eclipse 运行 main 方法时，它运行完全没有问题。但是，当我将应用程序转换为可执行 .jar 并在单击使用 FileChoose 选择文件的按钮时运行 .jar 时，我收到此错误。

“线程“Thread-20”中出现异常 java.lang.IllegalStateException:仅在事件线程上允许此操作；currentThread = Thread-20”

这是我的代码，当我从 Eclipse 运行应用程序时，该代码运行得很好，但在转换为 .jar 时却不行。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，所以很高兴回答。我误读了你的牙套；它肯定在它自己的线程中。我会在您的捕获中添加一些 e.printStackTrace() 来准确查找您遇到错误的位置。您的方法调用之一似乎在线程体内无效。如果您找到该位置但仍然无法弄清楚，请更新您的帖子以告知我们。否则，您可能需要考虑使用 Task 对象.