java - 在 Mac 上用 java 读取文件

Question

我正在做一个关于java的教程，我现在观看的视频涉及FileReading，但它是针对Windows的，而我在Mac上。请帮忙

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

public class App {

	public static void main(String[] args) throws FileNotFoundException {
		String fileName = "/Users/--MyUsername--/Desktop/test.rtf";
		
		File textFile = new File(fileName);
		
		Scanner in = new Scanner(textFile);
		
		int value = in.nextInt();
		System.out.println("Read value: " + value);
		
		in.nextLine();
		
		int count = 2;
		
		while(in.hasNextLine()){
			String line = in.nextLine();
			
			System.out.println(count + ": " + line);
			count++;
		}
		
		in.close();
	}

}

这是我遇到的错误

Exception in thread "main" java.util.InputMismatchException
	at java.util.Scanner.throwFor(Scanner.java:840)
	at java.util.Scanner.next(Scanner.java:1461)
	at java.util.Scanner.nextInt(Scanner.java:2091)
	at java.util.Scanner.nextInt(Scanner.java:2050)
	at L37ReadingTextFiles.App.main(App.java:17)

请帮忙

Answer 1

您正在尝试从文件中读取整数，但内容不是整数，请使用String value = in.next();而不是int value = in.nextInt();