import java.io.File;
public class PathTest {
  public static void main(String[] args) throws Exception {
    System.out.println(
    Thread.currentThread().getContextClassLoader().getResource(""));
    System.out.println(PathTest.class.getClassLoader().getResource(""));
    System.out.println(ClassLoader.getSystemResource(""));
    System.out.println(PathTest.class.getResource(""));
    System.out.println(PathTest.class.getResource("/"));
    System.out.println(new File("").getAbsolutePath());
    System.out.println(System.getProperty("user.dir"));
  }
}

file:/E:/wxxr_projects2/wxxr-applications/wxxr-boss-connector/target/test-classes/
file:/E:/wxxr_projects2/wxxr-applications/wxxr-boss-connector/target/test-classes/
file:/E:/wxxr_projects2/wxxr-applications/wxxr-boss-connector/target/test-classes/
file:/E:/wxxr_projects2/wxxr-applications/wxxr-boss-connector/target/test-classes/com/wxxr/boss/config/
file:/E:/wxxr_projects2/wxxr-applications/wxxr-boss-connector/target/test-classes/
E:\wxxr_projects2\wxxr-applications\wxxr-boss-connector
E:\wxxr_projects2\wxxr-applications\wxxr-boss-connector

    private static Element getRootElement() throws Exception {
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        Document doc = db.parse(ConfigFactoryImplTest.class.getResource("") + "boss-connector-service.xml");
        return doc.getDocumentElement();
    }