从文件中读取Int值，所有内容都在一行中

要从文件中读取一行中的所有整数，可以使用多种编程语言来实现。以下是使用Python和Java的示例代码，展示了如何完成这个任务。

Python 示例

def read_integers_from_file(file_path):
    try:
        with open(file_path, 'r') as file:
            line = file.readline()
            # 使用正则表达式匹配所有整数
            integers = list(map(int, re.findall(r'-?\d+', line)))
            return integers
    except FileNotFoundError:
        print(f"文件 {file_path} 未找到")
    except Exception as e:
        print(f"读取文件时发生错误: {e}")

# 使用示例
file_path = 'path_to_your_file.txt'
integers = read_integers_from_file(file_path)
print(integers)

Java 示例

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ReadIntegersFromFile {
    public static List<Integer> readIntegersFromFile(String filePath) {
        List<Integer> integers = new ArrayList<>();
        try (BufferedReader br = new BufferedReader(new FileReader(filePath))) {
            String line = br.readLine();
            if (line != null) {
                Pattern pattern = Pattern.compile("-?\\d+");
                Matcher matcher = pattern.matcher(line);
                while (matcher.find()) {
                    integers.add(Integer.parseInt(matcher.group()));
                }
            }
        } catch (IOException e) {
            System.out.println("读取文件时发生错误: " + e.getMessage());
        }
        return integers;
    }

    public static void main(String[] args) {
        String filePath = "path_to_your_file.txt";
        List<Integer> integers = readIntegersFromFile(filePath);
        System.out.println(integers);
    }
}