Spring Read file from resources folder

By：Roy.LiuLast updated：2019-08-11

In Spring, we can use ClassPathResource or ResourceLoader to get files from classpath easily.

P.S Tested with Spring 5.1.4.RELEASE

1. src/main/resources/

For example, an image file in the src/main/resources/ folder

2. ClassPathResource

import org.springframework.core.io.Resource;
import org.springframework.core.io.ClassPathResource;
import java.io.File;
import java.io.InputStream;
    Resource resource = new ClassPathResource("android.png");
    InputStream input = resource.getInputStream();
    File file = resource.getFile();

3. ResourceLoader

import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
import java.io.File;
import java.io.InputStream;
    @Autowired
    ResourceLoader resourceLoader;
    Resource resource = resourceLoader.getResource("classpath:android.png");
    InputStream input = resource.getInputStream();
    File file = resource.getFile();

4. ResourceUtils

Please DO NOT use this ResourceUtils even it works, this class is mainly for internal use within the framework. Read the ResourceUtils JavaDocs

import org.springframework.util.ResourceUtils;

File file = ResourceUtils.getFile("classpath:android.png");

From：一号门

Tags: resources spring

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