【发布时间】：2014-05-13 09:23:16
【问题描述】：
您好，我正在使用一个框架，在该框架上加载一个对话框。单例对话框包含一个进度条。 我创建了自己的摇摆工人。我正在控制摇摆工人的构造方法（其功能类似于 doInBackground 方法）。 我正在尝试从外部类调用 hidedialog。对话框有时会卡住。我该如何解决。在win7上运行正常，但在win8上失败。
public class LoadingProgressDialogSingleton extends com.manu.scpoweb.common.ds.client.swing.dialog.Dialog {
protected static LoadingProgressDialogSingleton oneAndOnlyProgressDialog = null;
JProgressBar progressBar = null;
DFULoadStatusBean dfuLoadStatusBean = null;
double progress;
int progressComplete = 0;
BusinessObjectUserContext uc = null;
CopyProgressBarWorker copyProgressBarWorker = null;
ProgressBarWorker progressBarWorker = null;
public static synchronized LoadingProgressDialogSingleton getProgressDialog(IApplicationContext iApplicationContext, ClientDataManager dataManager){
if (oneAndOnlyProgressDialog == null){
oneAndOnlyProgressDialog = new LoadingProgressDialogSingleton(iApplicationContext.getParentFrame(),
iApplicationContext.getResource(APMConstants.RESOURCE_BUNDLE, "ProgressBar.Loading"), Boolean.TRUE);
oneAndOnlyProgressDialog.progressBar = new JProgressBar(0, 100);
oneAndOnlyProgressDialog.progressBar.setValue(0);
oneAndOnlyProgressDialog.progressBar.setPreferredSize(new Dimension(175, 20));
oneAndOnlyProgressDialog.progressBar.setStringPainted(true);
oneAndOnlyProgressDialog.progressBar.setBorder(BorderFactory.createBevelBorder(BevelBorder.LOWERED));
JLabel label = new JLabel(iApplicationContext.getResource(APMConstants.RESOURCE_BUNDLE, "ProgressBar.Reloading"));
JPanel center_panel = new JPanel();
center_panel.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1;
gbc.insets = new Insets(2, 6, 2, 6);
center_panel.add(label, gbc);
gbc.gridy = 1;
center_panel.add(oneAndOnlyProgressDialog.progressBar, gbc);
gbc.gridy = 2;
center_panel.add(Box.createVerticalGlue(), gbc);
oneAndOnlyProgressDialog.getContentPane().add(center_panel, BorderLayout.CENTER);
oneAndOnlyProgressDialog.setLocationRelativeTo(null); // center on screen
oneAndOnlyProgressDialog.setPreferredSize(new Dimension(350, 107));
oneAndOnlyProgressDialog.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
oneAndOnlyProgressDialog.uc = new BusinessObjectUserContext(iApplicationContext.getUser().getUserName(),
iApplicationContext.getUserLocale());
oneAndOnlyProgressDialog.uc.setAttributes(dataManager.getUserContext().getUserPreferences());
}
return oneAndOnlyProgressDialog;
}
public void showDialog(java.util.List<AttributeUUID> promoOfferKeysOnly){
final Thread showDialogThread = new Thread(new Runnable() {
public void run() {
toFront();
show();
}
});
showDialogThread.start();
if (promoOfferKeysOnly != null && promoOfferKeysOnly.size() > 0 ) {
progressBarWorker = new ProgressBarWorker();
BusinessObjectUserContext uc = new BusinessObjectUserContext(oneAndOnlyProgressDialog.uc.getUserName(),
oneAndOnlyProgressDialog.uc.getLocale());
uc.setAttributes(oneAndOnlyProgressDialog.uc.getUserPreferences());
progressBarWorker.setBusinessObjectUserContext(uc);
progressBarWorker.setDataKey(promoOfferKeysOnly.get(0));
progressBarWorker.start();
}
}
public static synchronized void hideDialog(){
if (oneAndOnlyProgressDialog != null){
ProgressBarWorker worker = oneAndOnlyProgressDialog.progressBarWorker;
CopyProgressBarWorker copyWorker = oneAndOnlyProgressDialog.copyProgressBarWorker;
oneAndOnlyProgressDialog.dispose();
if(oneAndOnlyProgressDialog.isShowing())
oneAndOnlyProgressDialog.setVisible(false);
oneAndOnlyProgressDialog = null;
if (worker!=null){
worker.setProgressComplete();
}
if (copyWorker!=null){
copyWorker.setCopyCompleted();
}
}
}
protected LoadingProgressDialogSingleton(Frame iParent, String iTitle, boolean iModal) {
super(iParent, iTitle, iModal);
}
class ProgressBarWorker extends SwingWorker {
BusinessObjectUserContext uc = null;
AttributeUUID dataKey = null;
public AttributeUUID getDataKey() {
return dataKey;
}
public void setDataKey(AttributeUUID dataKey) {
this.dataKey = dataKey;
}
public void setProgressComplete(){
progressComplete = 100;
}
public Object construct() {
progressComplete = 0;
EventQueue queue = Toolkit.getDefaultToolkit().getSystemEventQueue();
if (queue instanceof ManuEventQueue) {
try {
JAASUtilities.runAs(((ManuEventQueue) Toolkit.getDefaultToolkit().getSystemEventQueue()).getSubject(),
new PrivilegedExceptionAction() {
public Object run() throws Exception {
long totalDFUsCnt = 0;
long basePriceLoadedCnt = 0;
long baseCostLoadedCnt = 0;
long udasLoadedCnt = 0;
long histLoadedCnt = 0;
long fcstLoadedCnt = 0;
progressBar.setValue(5);
//Initialize progress property.
while (progressComplete < 5) {
if (Thread.currentThread().isInterrupted())
break;
if (dataKey != null) {
dfuLoadStatusBean = APMController.getDFULoadStatus(dataKey, uc);
if (dfuLoadStatusBean == null || !dfuLoadStatusBean.isStrated()) {
Thread.currentThread().sleep(5000);
continue;
} else {
if (dfuLoadStatusBean.getNumberOfDFUsInOffer() != null && totalDFUsCnt != dfuLoadStatusBean.getNumberOfDFUsInOffer().getSecond()) {
totalDFUsCnt = dfuLoadStatusBean.getNumberOfDFUsInOffer().getSecond();
progressBar.setValue(10);
}
if (dfuLoadStatusBean.getDfuBaseCostStatusAndCountPair() != null && (baseCostLoadedCnt != totalDFUsCnt)) {
if (dfuLoadStatusBean.getDfuBaseCostStatusAndCountPair().getFirst()) {
baseCostLoadedCnt = totalDFUsCnt;
progressComplete++;
} else {
baseCostLoadedCnt = dfuLoadStatusBean.getDfuBaseCostStatusAndCountPair().getSecond();
}
}
if (dfuLoadStatusBean.getDfuBasePriceStatusAndCountPair() != null && (basePriceLoadedCnt != totalDFUsCnt)) {
if (dfuLoadStatusBean.getDfuBasePriceStatusAndCountPair().getFirst()) {
basePriceLoadedCnt = totalDFUsCnt;
progressComplete++;
} else {
basePriceLoadedCnt = dfuLoadStatusBean.getDfuBasePriceStatusAndCountPair().getSecond();
}
}
if (dfuLoadStatusBean.getDfusUDAStatusAndCountPair() != null && (udasLoadedCnt != totalDFUsCnt)) {`enter code here
if (dfuLoadStatusBean.getDfusUDAStatusAndCountPair().getFirst()) {
udasLoadedCnt = totalDFUsCnt;
progressComplete++;
} else {
udasLoadedCnt = dfuLoadStatusBean.getDfusUDAStatusAndCountPair().getSecond();
}
}
if (dfuLoadStatusBean.getDfusHISTStatusAndCountPair() != null && (histLoadedCnt != totalDFUsCnt)) {
if (dfuLoadStatusBean.getDfusHISTStatusAndCountPair().getFirst()) {
histLoadedCnt = totalDFUsCnt;
progressComplete++;
} else {
histLoadedCnt = dfuLoadStatusBean.getDfusHISTStatusAndCountPair().getSecond();
}
}
if (dfuLoadStatusBean.getDfusFCSTStatusAndCountPair() != null && (fcstLoadedCnt != totalDFUsCnt)) {
if (dfuLoadStatusBean.getDfusFCSTStatusAndCountPair().getFirst()) {
fcstLoadedCnt = totalDFUsCnt;
progressComplete++;
} else {
fcstLoadedCnt = dfuLoadStatusBean.getDfusFCSTStatusAndCountPair().getSecond();
}
}
if (totalDFUsCnt != 0.0)
progress = (((baseCostLoadedCnt / totalDFUsCnt * 80) + (basePriceLoadedCnt / totalDFUsCnt * 80) +
(udasLoadedCnt / totalDFUsCnt * 80) + (histLoadedCnt / totalDFUsCnt * 80) +
(fcstLoadedCnt / totalDFUsCnt * 80)) / 500d);
if (progress != 0.0) {
progressBar.setValue((int) (progress * 100));
Thread.currentThread().sleep(500);
}
}
}
}
return null;
}
});
} catch (PrivilegedActionException e) {
e.printStackTrace();
}
}
return null; //To change body of implemented methods use File | Settings | File Templates.
}
public void finished() {
}
public void setBusinessObjectUserContext(BusinessObjectUserContext iUc) {
uc = iUc;
}
}
}
}
【问题讨论】：
-
这有点像试图从
EventDispatch线程以外的不同线程在 UI 上完成某些事情的味道。在处理文档中未明确标记为线程安全的任何内容时，您应该确保使用类似SwingUtilities.invokeLater()的内容。 -
是的，你的权利可能不是以线程安全的方式编写的。我们在这里做的错误是从 swing worker 的构造（doINBackground）更新进度条。我有 emodev 代码，但问题仍然存在
标签： java swing swingworker