getResourceAsStream 为现有文件返回 null

Question

I try to load a resource file as a stream:

public static InputStream getClientSecretStream() {
    return ClientSecretsUtils.class.getClassLoader().getResourceAsStream("/Me/my_txt.json");
}

I have the file under:

"/src/main/resources/Me/my_txt.json"

But .getResourceAsStream("/Me/my_txt.json"); returns null

and .getResourceAsStream("my_txt.json"); returns null as well

what should I check for?

Answer 1

• A class loader has absolute paths, without heading slash.
• A class.getResource starts at the package directory path of that class when a relative path, or needs a starting slash for absolute paths.

So:

return ClientSecretsUtils.class.getClassLoader()
           .getResourceAsStream("Me/my_txt.json");
return ClientSecretsUtils.class.getResourceAsStream("/Me/my_txt.json");

Where ClientSecretsUtil is in the same jar.

Look in the jar (is in zip format), and check the path. It must be case sensitive .

Your directory convention adheres to the maven build infrastructure, so my guess is maybe an accidental my_txt.json.txt or such.