相对于项目目录:new File("src/main/java/com/xcrj/file/xcrj.txt");
代码package com.xcrj.file; import java.io.*; import java.nio.charset.Charset; public class FilePath { public static void main(String[] args) { // 相对路径,相对于项目目录 File file = new File("src/main/java/com/xcrj/file/xcrj.txt"); // 绝对路径 // File file=new File(System.getProperty("user.dir")+"/src/main/java/com/xcrj/file/xcrj.txt"); try ( InputStream is = new FileInputStream(file); BufferedInputStream bis = new BufferedInputStream(is); ) { byte[] buf = new byte[bis.available()]; bis.read(buf); System.out.println(new String(buf, Charset.forName("UTF-8"))); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }