Read file from resources folder in Spring Boot

Question

I\'m using Spring Boot and json-schema-validator. I\'m trying to read a file called jsonschema.json from the resources folder. I\'ve t

Answer 1

Spent way too much time coming back to this page so just gonna leave this here:

File file = new ClassPathResource("data/data.json").getFile();

Answer 2

Here is my solution. May help someone;

It returns InputStream, but i assume you can read from it too.

InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream("jsonschema.json");

Answer 3

stuck in the same issue, this helps me

URL resource = getClass().getClassLoader().getResource("jsonschema.json");
JsonNode jsonNode = JsonLoader.fromURL(resource);

Answer 4

The simplest method to bring a resource from the classpath in the resources directory parsed into a String is the following one liner.

As a String(Using Spring Libraries):

         String resource = StreamUtils.copyToString(
                new ClassPathResource("resource.json").getInputStream(), defaultCharset());

This method uses the StreamUtils utility and streams the file as an input stream into a String in a concise compact way.

If you want the file as a byte array you can use basic Java File I/O libraries:

As a byte array(Using Java Libraries):

byte[] resource = Files.readAllBytes(Paths.get("/src/test/resources/resource.json"));

Answer 5

See my answer here: https://stackoverflow.com/a/56854431/4453282

import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;

Use these 2 imports.

Declare

@Autowired
ResourceLoader resourceLoader;

Use this in some function

Resource resource=resourceLoader.getResource("classpath:preferences.json");

In your case, as you need the file you may use following

File file = resource.getFile()

Reference:http://frugalisminds.com/spring/load-file-classpath-spring-boot/ As already mentioned in previous answers don't use ResourceUtils it doesn't work after deployment of JAR, this will work in IDE as well as after deployment

Answer 6

i think the problem lies within the space in the folder-name where your project is placed. /home/user/Dev/Java/Java%20Programs/SystemRoutines/target/classes/jsonschema.json

there is space between Java Programs.Renaming the folder name should make it work