Cannot read Resource from /static folder in Spring Boot

Question

Given a Spring Boot Maven Project with this structure:

src main resources static file.txt

This gets packaged into a jar file:

static file.txt

I have tried the following ways to try to read file.txt:

File file = ResourceUtils.getFile("file.txt"); File file = ResourceUtils.getFile("/file.txt"); File file = ResourceUtils.getFile("static/file.txt"); File file = ResourceUtils.getFile("/static/file.txt");

None of these work.

JB Nizet · Accepted Answer · 2016-02-24 23:21:11Z

4

It's a resource. Packaged inside a jar file. A File represents a path on the file system. So it can't represent an entry of a jar file.

Use MyClass.class.getResourceAsStream("/static/file.txt"). That uses the class loader, and thus loads resources from all the directories and jar files in the classpath.

answered Feb 24, 2016 at 23:21

JB Nizet

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2 Comments

Paul Croarkin Over a year ago

My first approach was to use servletContext.getResourceAsStream("/static/file.txt") which does not work. But using your approach does. Any idea why?

Paul Croarkin Over a year ago

Add to add to the mystery, in a non-Boot Spring MVC app, servletContext works, but the class loader does not.

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