将 java fx 日期选择器日期与查询中的 sql 日期进行比较
compare java fx date picker date to sql date inside a query
我想知道如何将 mysql 日期与 java fx 日期选择器日期进行比较。因此,如果我有一个 MM/DD/YYYY 格式的日期选择器日期和一个 YYYY/MM/DD 格式的 mysql 日期,我如何在查询中比较这两个?
我为你准备了小应用程序如何将Date
转换为LocalDate
并在DatePicker
中设置,如何从DatePicker
中获取LocalDate
并进行转换至 Date
。您还可以检查日期是否相同。
public class Main extends Application {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");
private Date dateUtil = sdf.parse("2016/09/25");
public Main() throws ParseException {
}
@Override public void start(Stage primaryStage) throws Exception {
Button button = new Button("Take date from DatePicker");
Label labelCompare = new Label();
Label labelCompare2 = new Label();
DatePicker datePicker = new DatePicker();
//convert Date to LocalDate
LocalDate localDate = dateUtil.toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
//set in DatePicker
datePicker.setValue(localDate);
VBox hBox = new VBox();
hBox.getChildren().addAll(datePicker, button, labelCompare, labelCompare2);
Scene scene = new Scene(hBox, 400, 400);
primaryStage.setScene(scene);
primaryStage.show();
button.setOnAction(new EventHandler<ActionEvent>() {
@Override public void handle(ActionEvent e) {
//Take LocalDate from DatePicker
LocalDate localDate = datePicker.getValue();
//Convert LocalDate to Date
Date dateFromPicker = Date.from(localDate.atStartOfDay(ZoneId.systemDefault()).toInstant());
//compare
labelCompare.setText("Compare date: " + dateUtil.compareTo(dateFromPicker));
}
});
}
public static void main(String[] args) {
launch();
}
}
最简单的方法:
字符串 searched_date = datePicker.getValue().toString();
日期 dateFromPicker = Date.valueOf(searched_date);
我想知道如何将 mysql 日期与 java fx 日期选择器日期进行比较。因此,如果我有一个 MM/DD/YYYY 格式的日期选择器日期和一个 YYYY/MM/DD 格式的 mysql 日期,我如何在查询中比较这两个?
我为你准备了小应用程序如何将Date
转换为LocalDate
并在DatePicker
中设置,如何从DatePicker
中获取LocalDate
并进行转换至 Date
。您还可以检查日期是否相同。
public class Main extends Application {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");
private Date dateUtil = sdf.parse("2016/09/25");
public Main() throws ParseException {
}
@Override public void start(Stage primaryStage) throws Exception {
Button button = new Button("Take date from DatePicker");
Label labelCompare = new Label();
Label labelCompare2 = new Label();
DatePicker datePicker = new DatePicker();
//convert Date to LocalDate
LocalDate localDate = dateUtil.toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
//set in DatePicker
datePicker.setValue(localDate);
VBox hBox = new VBox();
hBox.getChildren().addAll(datePicker, button, labelCompare, labelCompare2);
Scene scene = new Scene(hBox, 400, 400);
primaryStage.setScene(scene);
primaryStage.show();
button.setOnAction(new EventHandler<ActionEvent>() {
@Override public void handle(ActionEvent e) {
//Take LocalDate from DatePicker
LocalDate localDate = datePicker.getValue();
//Convert LocalDate to Date
Date dateFromPicker = Date.from(localDate.atStartOfDay(ZoneId.systemDefault()).toInstant());
//compare
labelCompare.setText("Compare date: " + dateUtil.compareTo(dateFromPicker));
}
});
}
public static void main(String[] args) {
launch();
}
}
最简单的方法: 字符串 searched_date = datePicker.getValue().toString(); 日期 dateFromPicker = Date.valueOf(searched_date);