FileInputStream不适用于相对路径 [英] FileInputStream doesn't work with the relative path

问题描述

我尝试从 FileInputStream 创建一个对象，并将文件的相对值传递给它的构造函数，但它无法正常工作并抛出 FileNotFoundException

I tried to create an object from FileInputStream and pass the relative value of a file to its constructor, but it doesn't work properly and threw a FileNotFoundException

try {
   InputStream is = new FileInputStream("/files/somefile.txt");
} catch (FileNotFoundException ex) {
   System.out.println("File not found !");
}

推荐答案

/ 在开始时将使路径成为绝对路径而不是相对路径。

The / at the start will make the path absolute instead of relative.

尝试删除前导 / ，所以替换：

Try removing the leading /, so replace:

InputStream is = new FileInputStream("/files/somefile.txt");

with：

InputStream is = new FileInputStream("files/somefile.txt");

如果您仍遇到问题，请尝试确保程序从您认为的位置开始运行< a href =https://stackoverflow.com/questions/4871051/getting-the-current-working-directory-in-java>检查当前目录：

If you're still having trouble, try making sure the program is running from where you think by checking the current directory:

System.out.println(System.getProperty("user.dir"));

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