getResourceAsStream("abc.xml") returning null

Question

I am writing a unit test case like this,

 public class XMLUtilsTest {
  private static final String XML_FOR_TEST ="a/b/c/xml_utils_test.xml";


 @Before
 public void setup() {

 }

@Test
public void testGetElementValue() throws Exception {
  InputStream inputStream = readTestXML(XML_FOR_TEST);

  System.out.println("Input Stream: "+inputStream);
}

private InputStream readTestXML(String testXmlFile) {
//InputStream inputStream = XMLUtilsTest.class.getResourceAsStream(testXmlFile);
//InputStream inputStream = Thread.currentThread().getContextClassLoader().getResourceAsStream(testXmlFile);
 InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream(testXmlFile);
 return inputStream;
 }
}

While debugging, i observe that this.getClass().getClassLoader() call in the readTestXML method loads class properly but when getResourceAsStream(testXmlFile) is invoked on output of this.getClass().getClassLoader() , the output is null.

my project structure is like this,

 --src
   --main
   --test
       --java
           --XMLUtilsTest.java
       --resources
           --a.b.c
               --xml_utils_test.xml

Please suggest.

Thanks,

Vijay Bhore

Try 'a.b.c/xml_utils_test.xml' if a.b.c are not directories. — Martin Strejc, Jun 24 '13 at 22:35
@Martin: a.b.c is a package which translates to a/b/c path in filesystem — Here to Learn., Jun 24 '13 at 22:37
http://stackoverflow.com/questions/5238048/junit-getresourceasstream-returning-null?rq=1 — Andreas Dolk, Jun 24 '13 at 22:39
`XML_FOR_TEST ="/a/b/c/xml_utils_test.xml"` -- note leading slash — Jim Garrison, Jun 24 '13 at 22:58
This was not conclusive for me. I replaced the xml file with a tried and tested xml in my project. The same code fragment worked. Sorry people. — Here to Learn., Jun 25 '13 at 00:16

Marlon Bernardes · Answer 1 · 2013-06-24T22:56:48.680

Your code is working. All you need to do is to check if src/test/resources is on your classpath and you should be fine (Project properties -> java build path)

I just recreated your scenario and it worked fine.

//Both snippets should work (don't forget to prepend a slash if using getClass().getResourceAsStream)
System.out.println(this.getClass().getClassLoader().getResourceAsStream("a/b/c/file.txt"));
System.out.println(this.getClass().getResourceAsStream("/a/b/c/file.txt"));

getResourceAsStream("abc.xml") returning null

1 Answers1