问在空位置找不到文件config.xml :无协议: config.xml -如何设置config.xml的路径

EN

package test;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;

public class JKResourceLoader {

    public InputStream getResourceAsStream(String resourceName) {
        URL url = getResourceUrl(resourceName);
        if (url != null) {
            try {
                return url.openStream();
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
        return null;
    }

    public URL getResourceUrl(String fileName) {
        if (fileName == null) {
            return null;
        }
        URL resource = getClass().getResource(fileName);
        if (resource == null) {
            resource = Thread.currentThread().getContextClassLoader().getResource(fileName);
            if (resource == null) {
                resource = ClassLoader.getSystemResource(fileName);
                if (resource == null) {
                    File file = new File(fileName);
                    if (file.exists()) {
                        try {
                            resource = file.toURI().toURL();
                        } catch (MalformedURLException e) {
                            throw new RuntimeException(e);
                        }
                    }
                }
            }
        }
        return resource;
    }
}

<dependency>
    <groupId>com.jalalkiswani</groupId>
    <artifactId>jk-util</artifactId>
    <version>0.0.9</version>
</dependency>

InputStream in = JKResourceLoaderFactory.getResourceLoader().getResourceAsStream("/config.xml");