英文:
Update/Refresh JavaFX Label From MongoDB database (JAVA)
问题
我请求您的帮助，因为我无法更新来自我的数据库的JavaFX标签中的数据。
具体来说，我尝试创建了一个包含标签的MVC模式的视图。
我创建了模块以从MongoDB中提取所有数据（这些数据正在正常工作）。为了刷新我的视图，我在我的模型中创建了一个线程，每隔几秒钟从数据库中提取数据。
我收集的所有数据都存储在SimpleDoubleProperty/SimpleIntegerProperty/SimpleStringProperty中，以进行绑定。
我的模型类的一部分：
public SimpleDoubleProperty sto = new SimpleDoubleProperty(0.);
public SimpleIntegerProperty nbA = new SimpleIntegerProperty(0);
public SimpleStringProperty signalStrengh = new SimpleStringProperty();
public void start() {
worker = new DataBaseWorker();
worker.start();
}
private class DataBaseWorker extends Thread {
public void run() {
while(!stop) {
sto.set(MongoDataService.getStorage());
nbA.set(MongoDataService.getNbAircraft(interval));
double sig_strengh = MongoDataService.getSignalStrengh(interval);
if(sig_strengh >= excellent_sig) {
signalStrengh.set("Excellent");
}
else if (sig_strengh > good_sig && sig_strengh < excellent_sig) {
signalStrengh.set("Good");
}
else {
signalStrengh.set("Poor");
}
waitFor(ConfigService.getInstance().getDBFetchDataIntervalInMS());
}
}
}
此后，我的控制器进行了绑定（我还尝试在我的视图中进行绑定，但没有成功）：
Label data_sto = (Label)((HBox)supervisor.root.getChildren().get(2)).getChildren().get(1);
Label nbAir_lab = (Label)((HBox)supervisor.root.getChildren().get(3)).getChildren().get(1);
Label sig_lab = (Label)((HBox)supervisor.root.getChildren().get(4)).getChildren().get(1);
data_sto.textProperty().bind(model.sto.asString());
nbAir_lab.textProperty().bind(model.nbA.asString());
sig_lab.textProperty().bind(model.signalStrengh);
一切都很好编译，没有运行时错误。我有我的窗口，其中包括我创建的一切。
但问题是，我的标签没有按照我期望的方式更新。
我认为问题可能来自我创建的线程，它不能与绑定器通信，但因为我是Java和JavaFX的新手，所以可能是任何原因。
谢谢，我希望有人能帮助我。
英文:
I'm asking your help because I can't manage to update javaFX Labels with data from my database.
To be specific, I tried to create a MVC pattern, with a view containing Labels.
I created modules in order to fetch all the data from MongoDB(which are workinf fine). In order to refresh my view, I created in my model a thread which fetch every few second data from the database.
All the data that I collect are stocked in SimpleDoubleProperty/SimpleIntegerProperty/SimpleStringProperty, in order to make biding.
A part of my model class :
public SimpleDoubleProperty sto = new SimpleDoubleProperty(0.);
public SimpleIntegerProperty nbA = new SimpleIntegerProperty(0);
public SimpleStringProperty signalStrengh = new SimpleStringProperty();
public void start() {
worker = new DataBaseWorker();
worker.start();
}
private class DataBaseWorker extends Thread {
public void run() {
while(!stop) {
sto.set(MongoDataService.getStorage());
nbA.set(MongoDataService.getNbAircraft(interval));
double sig_strengh = MongoDataService.getSignalStrengh(interval);
if(sig_strengh >= excellent_sig) {
signalStrengh.set("Excellent");
}
else if (sig_strengh> good_sig && sig_strengh <excellent_sig) {
signalStrengh.set("Good");
}
else {
signalStrengh.set("Poor");
}
waitFor(ConfigService.getInstance().getDBFetchDataIntervalInMS());
}
}
}
Thereafter, my controller make the bindings (I also tried to make the bindings in my view without success) :
Label data_sto = (Label)((HBox)supervisor.root.getChildren().get(2)).getChildren().get(1);
Label nbAir_lab = (Label)((HBox)supervisor.root.getChildren().get(3)).getChildren().get(1);
Label sig_lab = (Label)((HBox)supervisor.root.getChildren().get(4)).getChildren().get(1);
data_sto.textProperty().bind(model.sto.asString());
nbAir_lab.textProperty().bind(model.nbA.asString());
sig_lab.textProperty().bind(model.signalStrengh);
Everything compile great and no runtime error. I have my window with everything I created.
But the issue is that my label are not updated as I expect.
I think the issue may come from the thread I create which doesn't communicate with the binders but because I'm a novice in Java and Javafx it could be anything.
Thank you and I hope that someone will help me.
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