Java从文件中读取二维数组，数字用逗号分隔

Question

这是我发现有助于读取二维数组的一些代码，但我遇到的问题是这仅在读取结构如下的数字列表时才有效:

73
56
30
75
80
ect..

我想要的是能够读取如下结构的多行:

1,0,1,1,0,1,0,1,0,1
1,0,0,1,0,0,0,1,0,1
1,1,0,1,0,1,0,1,1,1

我只想将每一行本质上导入为一个数组，同时像文本文件中的数组一样构建它们。我读过的所有内容都说要使用 scan.usedelimiter(",");但在我尝试使用它的任何地方，程序都会直接抛出回复“错误转换数字”的捕获。如果有人可以提供帮助，我将不胜感激。我还看到了一些有关对缓冲读取器使用 split 的信息，但我不知道使用哪个/为什么/如何更好。

    String filename = "res/test.txt"; // Finds the file you want to test.


    try{
        FileReader ConnectionToFile = new FileReader(filename);
        BufferedReader read = new BufferedReader(ConnectionToFile);
        Scanner scan = new Scanner(read);

        int[][] Spaces = new int[10][10];
        int counter = 0;
        try{
            while(scan.hasNext() && counter < 10)
            {
                for(int i = 0; i < 10; i++)
                {
                    counter = counter + 1;
                    for(int m = 0; m < 10; m++)
                    {
                        Spaces[i][m] = scan.nextInt();
                    }
                }
            }
            for(int i = 0; i < 10; i++)
            {
                //Prints out Arrays to the Console, (not needed in final)
                System.out.println("Array" + (i + 1) + " is: " + Spaces[i][0] + ", " + Spaces[i][1] + ", " + Spaces[i][2] + ", " + Spaces[i][3] + ", " + Spaces[i][4] + ", " + Spaces[i][5] + ", " + Spaces[i][6]+ ", " + Spaces[i][7]+ ", " + Spaces[i][8]+ ", " + Spaces[i][9]);
            }
        } 
        catch(InputMismatchException e)
        {
            System.out.println("Error converting number");
        }
        scan.close();
        read.close();
    }
    catch (IOException e)
    {
    System.out.println("IO-Error open/close of file" + filename);
    }
}

Answer 1

我在这里提供我的代码。

public static int[][] readArray(String path) throws IOException {
    //1,0,1,1,0,1,0,1,0,1
    int[][] result = new int[3][10];
    BufferedReader reader = new BufferedReader(new FileReader(path));
    String line = null;
    Scanner scanner = null;
    line = reader.readLine();
    if(line == null) {
        return result;
    }
    String pattern = createPattern(line);
    int lineNumber = 0;
    MatchResult temp = null;
    while(line != null) {
        scanner = new Scanner(line);
        scanner.findInLine(pattern);
        temp = scanner.match();
        int count = temp.groupCount();
        for(int i=1;i<=count;i++) {
            result[lineNumber][i-1] = Integer.parseInt(temp.group(i));
        }
        lineNumber++;
        scanner.close();
        line = reader.readLine();
    }
    return result;
}

public static String createPattern(String line) {
    char[] chars = line.toCharArray();
    StringBuilder pattern = new StringBuilder();;
    for(char c : chars) {
        if(',' == c) {
            pattern.append(',');
        } else {
            pattern.append("(\\d+)");
        }
    }
    return pattern.toString();
}