小编Ivo*_*ory的帖子

我想将 File InputStream 转换为 S3ObjectInputStream，我以下面的方式尝试过，但没有成功，我得到了

java.io.FileInputStream cannot be cast to com.amazonaws.services.s3.model.S3ObjectInputStream

这是我的代码

InputStream is = new FileInputStream(file);
S3ObjectInputStream sObject = (S3ObjectInputStream)is;