Question

我正在创建一个概率结果模拟器程序。该程序读取某个.csv文件并预测每个游戏的结果。我遇到了6个相同的错误：错误：非法字符：＆＃39; \ u2013＆＃39;

这是我的代码：

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.scene.layout.*;
import javafx.scene.control.*;
import javafx.stage.FileChooser;
import javafx.geometry.*;
import java.util.*;
import java.io.*;

public class POS extends Application
{
   private Button runBtn = new Button("Run");
   @Override
   public void start(Stage stage)
   {
      GridPane pane = new GridPane();

      VBox vBox = new VBox(20);
      vBox.setPadding(new Insets(15));
      Button selectBtn = new Button("Select File");
      selectBtn.setStyle("-fx-font: 22 arial; -fx-base: #b6e7c9;");
      vBox.getChildren().add(selectBtn);

      selectBtn.setOnAction(e->
      {
         FileChooser fileChooser = new FileChooser();
         fileChooser.setTitle("Open Resource File");
         FileChooser.ExtensionFilter extFilter = 
                        new FileChooser.ExtensionFilter("TEXT files (*.csv)", "*.CSV", ".xlsv", ".XLSV");
                fileChooser.getExtensionFilters().add(extFilter);
         File file = fileChooser.showOpenDialog(stage);

            run(file);


      });

      RadioButton weekBtn = new RadioButton("Current Week");  
      RadioButton seasonBtn = new RadioButton("Entire Season");

      runBtn.setStyle("-fx-font: 22 arial; -fx-base: #b6e7c9;");



      seasonBtn.setDisable(true);
      vBox.getChildren().add(weekBtn);
      vBox.getChildren().add(seasonBtn);
      vBox.getChildren().add(runBtn);

      pane.add(vBox, 0, 0);
      Scene scene = new Scene(pane, 500, 200);
      stage.setScene(scene);
      stage.setTitle("POS");
      stage.show();
   }
   public void run(File file)
   {
      runBtn.setOnAction(e->
      {
         try
         {
            Scanner input = new Scanner(file);
            input.nextLine(); 
            sortFile(file, input);

            input.close();
         }

         catch (InputMismatchException ex)
         {
            System.out.println("Error you seem to have typed the wrong type of file");
         }
         catch(IOException ex)
         {
            System.out.println("Error, file could not be found");
         }


      });
   }
   public ArrayList<String> sortFile(File file, Scanner input)
   {
      String strList = Arrays.toString(input.nextLine().split("\t"));
      String[] arrList = strList.split(",");
      int homeRank = Integer.parseInt(arrList[1]);
      System.out.println(homeRank);
      int roadRank = Integer.parseInt(arrList[6]);
      Random r = new Random();
      int lowestTeamRank = Math.abs(homeRank - roadRank);

      if (homeRank < roadRank)
      {
         double numForHomeTeam = r.nextInt(lowestTeamRank) - r.nextInt(2) + (getLastGameOutcome(arrList[4])* r.nextInt(3)) – getWinPct(arrList[2], arrList[3]);

         double numForRoadTeam = r.nextInt(roadRank) + r.nextInt(2) + getLastGameOutcome(arrList[9])* r.nextInt(3) – getWinPct(arrList[7], arrList[8]);
      }

      else if (homeRank > roadRank)
      {
         double numForHomeTeam = r.nextInt(homeRank) - r.nextInt(2) + getLastGameOutcome(arrList[4])* r.nextInt(3) – getWinPct(arrList[2], arrList[3]);

         double numForRoadTeam = r.nextInt(lowestTeamRank) - r.nextInt(2) + getLastGameOutcome(arrList[9])* r.nextInt(3) – getWinPct(arrList[7], arrList[8]);
      }

      else
      {
         double numForHomeTeam = r.nextInt(homeRank) - r.nextInt(2) + getLastGameOutcome(arrList[4])* r.nextInt(3) – getWinPct(arrList[2], arrList[3]);

         double numForRoadTeam = r.nextInt(lowestTeamRank) - r.nextInt(2) + getLastGameOutcome(arrList[9])* r.nextInt(3) – getWinPct(arrList[7], arrList[8]);

      }       
      return null;
   }

   public int getLastGameOutcome(String lastGame)
   {
      if (lastGame.charAt(0) == 'W')
      {
         return (int)(Math.random() * 3);
      }

      else
      {
         return (int)(Math.random() * -3);
      }  
   }

   public double getWinPct(String wins, String losses)
   {
       double wins = Double.parseDouble(wins);
       double losses = Double.parseDouble(losses);
       return wins / (wins + losses);
   }  

}

错误发生在sortFile方法中，其中if / else if / else语句是（numForHomeTeam和numForRoadTeam的公式）。错误发生在每个公式的末尾，其中getWinPct（）从其他所有内容中减去。导致此错误的原因是什么？如何解决？

Answer 1

字符\u2013是一个短划线，而不是常规短划线（ascii 45）。在读入文件时，可能需要过滤非标准字符。在阅读.doc或其他类型的文件时，我不得不过滤掉一些不规则的字符

Answer 2

我发现了为什么遇到错误。原来是因为我使用了从Word文档（ - ）复制和粘贴的否定符号，而不是在IDE中手动编写减法符号（ - ）。

Answer 3

您的CSV中最有可能包含此字符的值。我建议你修复文件，使这些列只包含你期望的数字。

或者，您可以忽略任何不属于数字的字符，但这假设您知道为损坏的文件执行此操作是安全的。

Java错误：非法字符：＆＃39; \ u2013＆＃39;

3 个答案: