改一下写法，添加一些返回值为error的判断处理

setAlwaysontop 这个方法是1.8jdk才有的，之前1.7的里面就没有这样的方法，那就去掉吧，没什么影响。

designer_base/src/com/fr/design/extra/LoginWebBridge.java

@@ -27,6 +27,8 @@ public class LoginWebBridge {
     private static final long CHECK_MESSAGE_TIME = 30 * 1000L;
     //数据查询正常的标志 ok
     private static final String SUCCESS_MESSAGE_STATUS = "ok";
+    //数据通讯失败
+    private static final String FAILED_MESSAGE_STATUS = "error";
 
     //消息条数
     private int messageCount;
@@ -125,9 +127,12 @@ public class LoginWebBridge {
                     if(getMessage.isServerAlive()){
                         try {
                             String res = getMessage.getResponseText();
-                            JSONObject jo = new JSONObject(res);
-                            if (jo.getString("status").equals(SUCCESS_MESSAGE_STATUS)) {
-                                setMessageCount(Integer.parseInt(jo.getString("message")));
+                            if (res.equals(FAILED_MESSAGE_STATUS)) {
+                            }else {
+                                JSONObject jo = new JSONObject(res);
+                                if (jo.getString("status").equals(SUCCESS_MESSAGE_STATUS)) {
+                                    setMessageCount(Integer.parseInt(jo.getString("message")));
+                                }
                             }
                         } catch (Exception e) {
                             FRContext.getLogger().info(e.getMessage());

designer_base/src/com/fr/design/extra/QQLoginWebPane.java

@@ -104,12 +104,17 @@ public class QQLoginWebPane extends JFXPanel {
                         showAlert(event.getData());
                     }
                 });
-                webEngine.getLoadWorker().stateProperty().addListener((ObservableValue<? extends Worker.State> observable, Worker.State oldValue, Worker.State newValue) -> {
-                    if (newValue == Worker.State.SUCCEEDED) {
-                        window = (JSObject) webEngine.executeScript("window");
-                        window.setMember("QQLoginHelper", QQLoginWebBridge.getHelper(webEngine));
-                    }
-                });
+                webEngine.getLoadWorker().stateProperty().addListener(
+                        new ChangeListener<Worker.State>() {
+                            public void changed(ObservableValue ov, Worker.State oldState, Worker.State newState) {
+                                if (newState == Worker.State.SUCCEEDED) {
+                                    window = (JSObject) webEngine.executeScript("window");
+                                    window.setMember("QQLoginHelper", QQLoginWebBridge.getHelper(webEngine));
+                                }
+                            }
+                        }
+                );
+
                 webView.setContextMenuEnabled(false);//屏蔽右键
                 root.setCenter(webView);
             }
@@ -151,7 +156,6 @@ public class QQLoginWebPane extends JFXPanel {
         dialog.setHeight(DEFAULT_CONFIRM_HEIGHT);
         dialog.setWidth(DEFAULT_CONFIRM_WIDTH);
         dialog.setIconified(false);
-        dialog.setAlwaysOnTop(true);
         dialog.initOwner(parent);
         dialog.initModality(Modality.WINDOW_MODAL);
         dialog.setScene(