InputStream from relative path

问题

I have a relative file path (for example "/res/example.xls") and I would like to get an InputStream Object of that file from that path.

I checked the JavaDoc and did not find a constructor or method to get such an InputStream from a path/

Anyone has any idea? Please let me know!

Thank you

回答1:

Use FileInputStream:

InputStream is = new FileInputStream("/res/example.xls");

But never read from raw file input stream as this is terribly slow. Wrap it with buffering decorator first:

new BufferedInputStream(is);

BTW leading slash means that the path is absolute, not relative.

回答2:

InputStream inputStream = Files.newInputStream(Path);

回答3:

Initialize a variable like: Path filePath, and then:

FileInputStream fileStream;
try {
    fileStream = new FileInputStream(filePath.toFile());
} catch (Exception e) {
    throw new RuntimeException(e);
}

Done ! Using Path you can have access to many useful methods.

回答4:

new FileInputStream("your_relative_path") will be relative to the current working directory.

来源：https://stackoverflow.com/questions/7692298/inputstream-from-relative-path