amazon-s3 - 如何将 FileInputStream 转换为 S3ObjectInputStream

Question

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;

Answer 1

这是将 inputStream 转换为 S3Object inputstream 的方法。确保 src/test/resources 文件夹中存在模拟 S3 文件

private S3ObjectInputStream getMockS3Content() {
        InputStream inputStream = Thread.currentThread()
            .getContextClassLoader()
            .getResourceAsStream("mockS3content.json");
        S3ObjectInputStream s3ObjectInputStream = new S3ObjectInputStream(inputStream,null);
        return s3ObjectInputStream;
    }