Question

有人知道这个方法中的字符串解析失败了，我不知道。我真的想把这个方法付诸行动，在我正在研究的项目中。谢谢你，亲切的问候。

public static void loadActiveGameStateSprites(){
    try {    
        // Clears and sets resources 
        activeGameStateSprites.clear();

        try {
            fileScanner = new Scanner(new File("res/allGameStatesSpriteStats.txt"));
        }
        catch (FileNotFoundException e) {
           System.out.println("An error has occured during the file Read operation of method loadActiveGameStateManager"); 
        }

        // creates all sprites, sort and reads x, y, image file path, 
        while (fileScanner.hasNextLine()){
            String readLine = fileScanner.nextLine();

            System.out.println("test readLine: " + readLine);                
            String[] lineValues = readLine.split(",");               
            for (String lineValue : lineValues) {
                lineValue.trim();
                System.out.println("test lineValue: " + lineValue);
            }

            int x = Integer.parseInt(lineValues[0]); // <--------- does not work
           // int y = Integer.parseInt(lineValues[1]);  <--------- does not work
           // String spritePath = lineValues[2];        <--------- does not work                 
           // Platformable p = new Platformable(x, y, 80, 80, spritePath); <--------- therefor cannot not work
            //activeGameStateSprites.add(p);

            if (activeLastScannedValue <= activeNextScanValue){          // if (!(activeLastScannedValue > activeNextScanValue)){              
                activeLastScannedValue++;
            } else {
                numScanValuesToBeReadActiveIndex++;
                activeNextScanValue = numScanValuesToBeReadPerGameStates[numScanValuesToBeReadActiveIndex];
            }
        } 

    } catch (NumberFormatException e) {
        System.out.println("An error has occured in method loadGameStateSprites()");
    }
}

txt文件如下所示（没有空行）：

100,50，images / testImage1.png

20,30，images / testImage2.png

40,50，images / testImage3.png

60,70，images / testImage4.png

80,10，images / testImage5.png

40,40，images / testImage6.png

50,90，images / testImage7.png

300,500，images / testImage8.png

读取的第一行的所有值都正确存储我把它们打印出来并进行了测试。

例如： liveValues [0] = 100;

liveValues [1] = 50;

liveValues [2] = images / testImage1.png;

＆lt; ----------------------------此时捕捉到异常e

catch (NumberFormatException e) {
           System.out.println("An error has occured during the file Read operation of method loadActiveGameStateManager"); 
        }

打印stacktrace uotputs：

java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:504)
at java.lang.Integer.parseInt(Integer.java:527)
at GameStateManager.loadActiveGameStateSprites(GameStateManager.java:89)
at GameStateManager.loadActiveGameState(GameStateManager.java:59)
at GameStateManager.<init>(GameStateManager.java:34)
at GamePanel.<clinit>(GamePanel.java:23)
at GameFrame.<clinit>(GameFrame.java:9)

建立成功（总时间：19秒）

Answer 1

我制作了一个简化版的代码，它还检查一行是否为空（即使你提到它不是空白）。我的代码工作正常。你可以在这里插入你的代码，使用所有那些拆分代币来制作精灵等。

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

public class Games {

    public static void main(String[] args) {

        Scanner fileScanner;
        String readLine;
        String[] lineValues;

        int x = 0;
        int y = 0;
        String spritePath = null;

        try {
            fileScanner = new Scanner(new File("C:/temp/a.txt"));
            while (fileScanner.hasNextLine()) {
                readLine = fileScanner.nextLine();

                if (readLine.length() != 0) {
                    lineValues = readLine.split(",");
                    x = Integer.parseInt(lineValues[0].trim());
                    y = Integer.parseInt(lineValues[1].trim());
                    spritePath = lineValues[2].trim();
                    System.out.println(x + "," + y + "," + spritePath);

                }

            }

        } catch (FileNotFoundException e1) {
            e1.printStackTrace();
        }

    }
}

简单扫描字符串解析任务失败

1 个答案: