spring autowired Null pointer exception on service | Java Community | Help. Code. Learn. | Page 1

versed forge Dec 22, 2022, 9:03 AM

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when I debug my test, I cant call my method inside my service because null pointer exception on this picture attached.

@UtilityClass
@Slf4j
public class DppNptePrivilegeUtil {

  @Autowired
  private UserProfileIndividualData userProfileIndividualData;

@Slf4j
@Service
public class UserProfileIndividualData extends UserProfileClientService {

java.lang.NullPointerException
    at com.netcompany.dpp.security.auth.server.util.DppNptePrivilegeUtil.testAddNumbersDPP

How do i fix this?

cosmic prismBOT Dec 22, 2022, 9:03 AM

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ionic tangle Dec 22, 2022, 9:04 AM

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What does your test class look like

versed forge Dec 22, 2022, 9:05 AM

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class OAuth2UtilsSpec extends Specification {

void 'AAAAAAAAAAA'() {
    given:

    when:
    OAuth2Utils.test1234(1,1)

    then:

    def e = 5 + 5
  }
}

ionic tangle Dec 22, 2022, 9:06 AM

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So @Autowired requires there to be a Spring Context running in order to inject that dependency. If you're running your tests without this context it's not going to do the dependency injection and you'll end up with the null value

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One way to get an application context running in test env is

    private final ApplicationContextRunner contextRunner
            = new ApplicationContextRunner();

You can get a bean with all the autowirings with

contextRunner.getBean(YourClass.class)

versed forge Dec 22, 2022, 9:11 AM

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I'm sorry thats Chinese to me

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I don't understand why its needed to do that

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there are many other tests in this project which are running tests on services

versed forge Dec 22, 2022, 9:13 AM

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ionic tangle One way to get an application context running in test env is ``` private fi...

and there is no this for those

ionic tangle Dec 22, 2022, 9:18 AM

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versed forge I don't understand why its needed to do that

it does that because you are using Spring. Spring is a (dependency injection)[https://en.wikipedia.org/wiki/Dependency_injection] framework where it injects dependencies in your context. If you don't want to use the automatic dependency injection, you can always create those objects manually and assign it the normal way

DppNptePrivilegeUtil.setDppNptePrivilegeUtil(something);

versed forge Dec 22, 2022, 9:28 AM

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That just doesnt mean anything to me but thankyou for your time

#spring autowired Null pointer exception on service