Read CSV file and add the fields to a JavaFX tableview

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Read CSV file and add the fields to a JavaFX tableview

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#1 by (0 votes)

-1

I'm trying to read a file with CSV format which has movie information through a Filereader, add all the elements in a list and then display them in a Tableview in JavaFX. The problem is that I do not execute my method.

'/ * * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. * / package act8;

import java.net.URL; import java.util.ResourceBundle; import javafx.event.ActionEvent; import javafx.fxml.FXML; import javafx.fxml.Initializable;

import java.io.BufferedReader; import java.io.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import java.net.URL; import java.util.ResourceBundle; import java.util.Scanner; import java.util.logging.Level; import java.util.logging.Logger; import javafx.event.ActionEvent; import javafx.fxml.FXML; import javafx.fxml.Initializable; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.control.Label; import javafx.scene.control.TableView; import javafx.scene.control.TextField; import javafx.stage.FileChooser; import javafx.stage.Stage; import javax.swing.JOptionPane;

/ ** * * @author Anton * / public class FXMLDocumentController implements Initializable { Scene scene; Stage window; Scanner sc = new Scanner (System.in); FileChooser fs;

@FXML 
private TextField txtdatosd;
@FXML 
private TextField txtdatosr;
@FXML
private Button btnAbrirD;
@FXML
private Button btnAbrirR;
@FXML
private Button btncargard;
@FXML
private TableView tbldisponibles;

public void abrirD() throws IOException{
    File f=null;
    f=fs.showOpenDialog(window);
        if(f != null){
            txtdatosd.setText(f.getAbsolutePath());
        }

}

public void leerArchivoCSVd() throws FileNotFoundException, IOException{
String csvFile = (txtdatosd.getText());

BufferedReader br = null; String line=""; // Define separator "," String cvsSplitBy=","; try { br = new BufferedReader (new FileReader (csvFile)); while ((line = br.readLine ())! = null) {
String [] data = line.split (cvsSplitBy); // Print data. System.out.println (data [0] + "," + data [1] + "," + data [2] + "," + data [3] + "," + data [4]); } } catch (FileNotFoundException e) { e.printStackTrace (); } catch (IOException e) { e.printStackTrace (); } finally { if (br! = null) { try { br.close (); } catch (IOException e) { e.printStackTrace (); } } } }

public void escucha(){
    btnAbrirD.setOnAction(evt ->{try {
        abrirD();
        } catch (IOException ex) {
            Logger.getLogger(FXMLDocumentController.class.getName()).log(Level.SEVERE, null, ex);
        }

});

}

@Override
public void initialize(URL url, ResourceBundle rb) {
    // TODO
    escucha();
}

} '

csv javafx

asked by Antonio 11.11.2018 в 01:53

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1 answer

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score 0 · Answer 1

To read any plain text file I suggest this code.

public Stream<String> leerAchivoExterno(String rutaArchivo) {
    Stream<String> lineas = null;

    try {
        lineas = Files.lines(Paths.get(rutaArchivo), Charset.forName("UTF-8"));
    } catch (IOException ex) {
        Logger.getLogger(ArchivoImpl.class.getName()).log(Level.SEVERE, null, ex);
    }

    return lineas;
}

then to add it to a table (TableView), you must do several things:

First create a class with the structure of the fields in the table

Ejm: Format for a table with a single column called description

public class FormatoDescripcion {
private String descripcion;

public FormatoDescripcion(String descripcion) {
    this.descripcion = descripcion;
}

public String getDescripcion() {
    return descripcion;
}

public void setDescripcion(String descripcion) {
    this.descripcion = descripcion;
}

}

Then you must initialize the column of the table and the table with this class

@FXML
private ObservableList<FormatoDescripcion> datos;
@FXML
private TableColumn<FormatoDescripcion, String> descripcion;    
@FXML
private TableView<FormatoDescripcion> tablaDescripcion;

Initialize the values

public void initialize(URL url, ResourceBundle rb) {
 datos = FXCollections.observableArrayList();

 descripcion.setCellValueFactory(new PropertyValueFactory<>  ("descripcion"));

tablaDescripcion.setItems(datos);
   }

Add the values you want dynamically. This would be about the data variable

ejm:

datos.add(new FormatoDescripcion("texto de interes"));