작성자가 파일에 아무 것도 쓰지 않습니다.

Question

public class AddDetails extends Application { 
    private final String FileName = "C:\\Users\\marsh\\OneDrive\\Documents\\CustomPrograms\\CalcProb\\Players.txt"; 
    private String Name; 
    private char Hand1, Hand1; 
    private double Skill1, Skill2; 
    File file = new File(FileName); 
    FileOutputStream fos = null; 
    Writer writer = null; 
    static Stage classStage = new Stage(); 
    String x = null; 

    public AddDetails() { 
     Name = ""; 
     Hand = '\0'; 
     Skill = 0.0; 
     BHand = '\0'; 
     BSkill = 0.0; 
    } 

    @SuppressWarnings("restriction") 
    @Override 
    public void start(Stage myStage) throws IOException { 
     classStage = myStage; 
     myStage.setTitle("Details"); 

     GridPane rootNode = new GridPane(); 
     rootNode.setPadding(new Insets(15)); 
     rootNode.setHgap(5); 
     rootNode.setVgap(5); 
     rootNode.setAlignment(Pos.CENTER); 

     Scene myScene = new Scene(rootNode, 300, 200); 

     rootNode.add(new Label("Name:"), 0, 0); 
     TextField name = new TextField(); 
     rootNode.add(name, 1, 0); 
     rootNode.add(new Label("Hand:"), 0, 1); 
     TextField hand = new TextField(); 
     rootNode.add(hand, 1, 1); 
     rootNode.add(new Label("Skill:"), 0, 2); 
     TextField skill = new TextField(); 
     rootNode.add(skill, 1, 2); 
     rootNode.add(new Label("Skill:"), 0, 3); 
     TextField Bskill = new TextField(); 
     rootNode.add(Bskill, 1, 3); 
     rootNode.add(new Label("Hand:"), 0, 4); 
     TextField Bhand = new TextField(); 
     rootNode.add(Bhand, 1, 4); 
     Button SButton = new Button("Store"); 
     rootNode.add(SButton, 1, 5); 
     GridPane.setHalignment(SButton, HPos.LEFT); 
     Button EButton = new Button("Finish"); 
     rootNode.add(EButton, 1, 5); 
     GridPane.setHalignment(EButton, HPos.RIGHT); 
     name.setPromptText("Enter Name"); 
     hand.setPromptText("Enter Hand); 
      skill.setPromptText("Enter Skill"); 
     Bhand.setPromptText("Enter Hand"); 
     Bskill.setPromptText("Enter Skill"); 

     myStage.setScene(myScene); 
     myStage.show(); 

     try { 
      BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(file), "UTF-8")); 
      fos = new FileOutputStream(file, true); 
      writer = new OutputStreamWriter(fos, "UTF-8"); 

      EButton.setOnAction(e -> { 
       myStage.close(); 
       try { 
        writer.close(); 
       } catch (IOException writerclose) { 
        Alert alert = new Alert(AlertType.ERROR); 
        alert.setTitle("Error"); 
        alert.setHeaderText("Error Encountered"); 
        alert.setContentText("Error: " + writerclose.getMessage()); 
       } 
      }); 

      SButton.setOnAction(e -> { 
       Name = name.getText(); 
       Hand = hand.getText().charAt(0); 
       Skill = Double.valueOf(skill.getText()); 
       BSkill = Double.valueOf(Bskill.getText()); 
       BHand = Bhand.getText().charAt(0); 
       Hand = Character.toUpperCase(Hand); 
       BHand = Character.toUpperCase(BHand); 

       System.out.println(Name + "\t" + Hand + "\t" + Skill + "\t" + BHand + "\t" + BSkill); 

       try { 

        writer.write(Name + "\t" + Hand + "\t" + Skill + "\t" + BHand + "\t" + BSkill); 

        name.clear(); 
        hand.clear(); 
        skill.clear(); 
        Bskill.clear(); 
        Bhand.clear(); 

       } catch (IOException br) { 

        Alert alert = new Alert(AlertType.ERROR); 
        alert.setTitle("Error"); 
        alert.setHeaderText("Error Encountered"); 
        alert.setContentText("Error: " + br.getMessage()); 

       } 
      }); 
     } catch (IOException e) { 
      Alert alert = new Alert(AlertType.ERROR); 
      alert.setTitle("Error"); 
      alert.setHeaderText("Error Encountered"); 
      alert.setContentText("Error: " + e.getMessage()); 
     } finally { 
      try { 
       if (writer != null) 
        writer.close(); 
       if (fos != null) 
        fos.close(); 
      } catch (IOException finalclose) { 
       Alert alert = new Alert(AlertType.ERROR); 
       alert.setTitle("Error"); 
       alert.setHeaderText("Error Encountered"); 
       alert.setContentText("Error: " + finalclose.getMessage()); 
      } 
     } 
    } 

    public static void main(String[] Args) { 
     launch(Args); 
    } 
} 

Answer 1

출력 파일을 열면 아무것도 쓰지 않고 닫습니다.

이 호출 될 때 주 스레드에서 열기 및 닫기가 실행되는 반면 SButton이 클릭되면 이벤트 스레드에서 쓰기가 시도됩니다.

간단한 수정은 쓰기를 수행중인 SButton 액션 리스너에서 fos을 열고 닫는 것입니다.

Answer 2

이것은 코드의 옵션 중 하나입니다.

저는 Writer 클래스가 전역 변수 일 필요는 없다고 생각합니다. 파일을 수정할 때마다 매번 내용을 열고 쓰십시오.

방금 ​​오류가 수정되어 실행되었습니다.

SButton.setOnAction(e -> { 
    //.... skip 

    try { 
     fos = new FileOutputStream(file, true); 
     writer = new OutputStreamWriter(fos, "UTF-8"); 

     writer.write(Name + "\t" + Hand + "\t" + Skill + "\t" + BHand + "\t" + BSkill); 

     name.clear(); 
     hand.clear(); 
     skill.clear(); 
     Bskill.clear(); 
     Bhand.clear(); 

     writer.flush(); 

    } catch (IOException br) { 

     Alert alert = new Alert(AlertType.ERROR); 
     alert.setTitle("Error"); 
     alert.setHeaderText("Error Encountered"); 
     alert.setContentText("Error: " + br.getMessage()); 

    } 
    finally { 
     try { 
      if (writer != null) 
       writer.close(); 
      if (fos != null) 
       fos.close(); 
     } catch (IOException finalclose) { 
      Alert alert = new Alert(AlertType.ERROR); 
      alert.setTitle("Error"); 
      alert.setHeaderText("Error Encountered"); 
      alert.setContentText("Error: " + finalclose.getMessage()); 
     } 
    } 
}); 

그래서, 전체 소스는 입력 변수가 아래 그림 여기

import java.io.File; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.io.OutputStreamWriter; 
import java.io.Writer; 

import javafx.application.Application; 
import javafx.geometry.HPos; 
import javafx.geometry.Insets; 
import javafx.geometry.Pos; 
import javafx.scene.Scene; 
import javafx.scene.control.Alert; 
import javafx.scene.control.Alert.AlertType; 
import javafx.scene.control.Button; 
import javafx.scene.control.Label; 
import javafx.scene.control.TextField; 
import javafx.scene.layout.GridPane; 
import javafx.stage.Stage; 

public class AddDetails extends Application { 
    private final String FileName = "C:\\Users\\marsh\\OneDrive\\Documents\\CustomPrograms\\CalcProb\\Players.txt"; 
    private String Name; 
    private char Hand, BHand; 
    private double Skill, BSkill; 
    private final File file = new File(FileName); 

    static Stage classStage = new Stage(); 
    String x = null; 

    public AddDetails() { 
     Name = ""; 
     Hand = '\0'; 
     Skill = 0.0; 
     BHand = '\0'; 
     BSkill = 0.0; 
    } 

    @SuppressWarnings("restriction") 
    @Override 
    public void start(Stage myStage) throws IOException { 
     classStage = myStage; 
     myStage.setTitle("Details"); 

     GridPane rootNode = new GridPane(); 
     rootNode.setPadding(new Insets(15)); 
     rootNode.setHgap(5); 
     rootNode.setVgap(5); 
     rootNode.setAlignment(Pos.CENTER); 

     Scene myScene = new Scene(rootNode, 300, 200); 

     rootNode.add(new Label("Name:"), 0, 0); 
     TextField name = new TextField(); 
     rootNode.add(name, 1, 0); 
     rootNode.add(new Label("Hand:"), 0, 1); 
     TextField hand = new TextField(); 
     rootNode.add(hand, 1, 1); 
     rootNode.add(new Label("Skill:"), 0, 2); 
     TextField skill = new TextField(); 
     rootNode.add(skill, 1, 2); 
     rootNode.add(new Label("Skill:"), 0, 3); 
     TextField Bskill = new TextField(); 
     rootNode.add(Bskill, 1, 3); 
     rootNode.add(new Label("Hand:"), 0, 4); 
     TextField Bhand = new TextField(); 
     rootNode.add(Bhand, 1, 4); 
     Button SButton = new Button("Store"); 
     rootNode.add(SButton, 1, 5); 
     GridPane.setHalignment(SButton, HPos.LEFT); 
     Button EButton = new Button("Finish"); 
     rootNode.add(EButton, 1, 5); 
     GridPane.setHalignment(EButton, HPos.RIGHT); 
     name.setPromptText("Enter Name"); 
     hand.setPromptText("Enter Hand "); 
      skill.setPromptText("Enter Skill"); 
     Bhand.setPromptText("Enter Hand"); 
     Bskill.setPromptText("Enter Skill"); 

     myStage.setScene(myScene); 
     myStage.show(); 


     EButton.setOnAction(e -> { 
      myStage.close(); 

     }); 

     SButton.setOnAction(e -> { 
      Name = name.getText(); 
      Hand = hand.getText().charAt(0); 
      Skill = Double.valueOf(skill.getText()); 
      BSkill = Double.valueOf(Bskill.getText()); 
      BHand = Bhand.getText().charAt(0); 
      Hand = Character.toUpperCase(Hand); 
      BHand = Character.toUpperCase(BHand); 
      FileOutputStream fos = null; 
      Writer writer = null; 

      System.out.println(Name + "\t" + Hand + "\t" + Skill + "\t" + BHand + "\t" + BSkill); 

      try { 
       fos = new FileOutputStream(file, true); 
       writer = new OutputStreamWriter(fos, "UTF-8"); 

       writer.write(Name + "\t" + Hand + "\t" + Skill + "\t" + BHand + "\t" + BSkill); 

       name.clear(); 
       hand.clear(); 
       skill.clear(); 
       Bskill.clear(); 
       Bhand.clear(); 

       writer.flush(); 

      } catch (IOException br) { 

       Alert alert = new Alert(AlertType.ERROR); 
       alert.setTitle("Error"); 
       alert.setHeaderText("Error Encountered"); 
       alert.setContentText("Error: " + br.getMessage()); 

      } 
      finally { 
       try { 
        if (writer != null) 
         writer.close(); 
        if (fos != null) 
         fos.close(); 
       } catch (IOException finalclose) { 
        Alert alert = new Alert(AlertType.ERROR); 
        alert.setTitle("Error"); 
        alert.setHeaderText("Error Encountered"); 
        alert.setContentText("Error: " + finalclose.getMessage()); 
       } 
      } 
     }); 

    } 

    public static void main(String[] Args) { 
     launch(Args); 
    } 
} 

저장된 파일은 다음과 같습니다

,

입니다

감사합니다.