SpringBoot 读取 Resource 下文件的几种方式

方式一

ClassPathResource resource = new ClassPathResource("excel/test.xlsx");
InputStream file = resource.getInputStream();

方式二

InputStream inputStream = Thread.currentThread()
  .getContextClassLoader()
  .getResourceAsStream("excel/test.xlsx");

方式三

InputStream inputStream = this.getClass()
  .getResourceAsStream("excel/test.xlsx");

方式四

File file = ResourceUtils.getFile("classpath:excel/test.xlsx");
InputStream inputStream = new FileInputStream(file);

学习参考

SpringBoot读取Resource下文件的几种方式 - 简书 (jianshu.com) (opens new window)