java 文件路径问题

Question

1. 问题

windows下路径分割符'',java程序可识别的是'\'或'/',通过用户输入的路径进行转换，变成程序可识别的，但是转化后的路径程序不识别。

1. 程序

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

public class test {

public static void main(String[] args) {
    // TODO 自动生成的方法存根
    String path=null;
    System.out.println("请输入文件路径");
    Scanner in=new Scanner(System.in);           //输入文件路径 "C:\Users\lenovo\Desktop\新建 Microsoft Excel 工作表.xlsx"
    path=in.nextLine().replaceAll("\\\\", "/");
    System.out.println(path);                    //得到系统识别的路径 path="C:/Users/lenovo/Desktop/新建 Microsoft Excel 工作表.xlsx"
    //path="C:/Users/lenovo/Desktop/新建 Microsoft Excel 工作表.xlsx";    
    File file=new File(path);                    //此时系统找不到文件，但是 将path="C:/Users/lenovo/Desktop/新建 Microsoft Excel 工作表.xlsx";执行后 程序能找到文件，问题就是 path已经是"C:/Users/lenovo/Desktop/新建 Microsoft Excel 工作表.xlsx"，但程序不识别，怎么回事
    try {
        FileReader fileReader=new FileReader(file);
        System.out.println("读入文件");
    } catch (FileNotFoundException e) {
        // TODO 自动生成的 catch 块
        System.out.println("文件未找到");
    }
}

}

Answer 1

-. - It seems that there is nothing wrong. Please compare the path you can successfully use (that is, the one you commented out) and the path converted after inputting it

Answer 2

You can try

"C:\Users\lenovo\Desktop\新建 Microsoft Excel 工作表.xlsx"

Answer 3

I ran your code and it’s no problem. Chinese file names can also be recognized.