將java fx日期選擇器日期與查詢中的sql日期進行比較

Question

我想知道如何將mysql日期與java fx日期選擇器日期進行比較。所以，如果我有一個日期選擇日期的MM/DD/YYYY格式和一個MySQL日期YYYY/MM/DD格式，我如何比較這兩個查詢內？

Answer 1

我給你小appliaction準備如何Date轉換爲LocalDate和DatePicker，設置如何從DatePicker採取LocalDate並轉換爲Date。您也可以檢查日期是否相同。

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(); 
    } 
}