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Editorial Team
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Asked: 2026-05-22T15:11:06+00:00

I have web application on spring mvc and maven. When I execute mvn clean

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I have web application on spring mvc and maven.
When I execute “mvn clean install” I got nullpointerexception from some uni-test.
It’s happens because one of resource is null, but why ?

Uni-test:

package myapp.services.impl

....

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:META-INF/spring/applicationContext.xml"})
@TransactionConfiguration
public class MyServiceImplTest {

    @Resource
    private MyService myService;

    @Transactional
    @Test
    public void someTest() {
        SomeEntity entity = new SomeEntity();
        myService.createSomething(entity);  // THROW - NullPointerException, myService is NULL
        ...
    }
}

surefire plugin in pom.xml:

        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>2.4.3</version>
            <configuration>
                <systemProperties>
                    <property>
                        <name>myapp.env</name>
                        <value>test</value>
                    </property>
                </systemProperties>
                <junitArtifactName>org.junit:com.springsource.org.junit</junitArtifactName>
            </configuration>
        </plugin>

And applicationContext.xml:

...
<context:component-scan base-package="myapp.services,myapp.services.impl"/>

<context:property-placeholder location="classpath*:META-INF/spring/common_${myapp.env}.properties"
                              system-properties-mode="OVERRIDE"
                              ignore-resource-not-found="true"/>
....

PS: When I execute this test in eclipse Run as JUnit Test – execute is fine without exception

Stack-trace after surefire report:

Test set: myapp.services.impl.MyServiceImplTest

Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 1.115 sec <<< FAILURE!
myapp.services.impl.MyServiceImplTest.someTest() Time elapsed: 1.068 sec <<< FAILURE!
java.lang.NullPointerException
at myapp.services.impl.MyServiceImplTest.someTest(MyServiceImplTest.java:42)

MAVEN OUTPUT:

...
[INFO] --- maven-surefire-plugin:2.4.3:test (default-test) @ mywebapp ---
[INFO] Surefire report directory: /home/xxx/Work/mywebapp/target/surefire-reports

-------------------------------------------------------
 T E S T S
-------------------------------------------------------
Running myapp.services.impl.MyServiceImplTest
log4j:WARN No such property [maxFileSize] in org.apache.log4j.DailyRollingFileAppender.
log4j:WARN No such property [maxBackupIndex] in     org.apache.log4j.DailyRollingFileAppender.
Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 0.919 sec <<< FAILURE!


Results :

Failed tests: 
  myapp.services.impl.MyServiceImplTest.someTest()

Tests run: 1, Failures: 1, Errors: 0, Skipped: 0

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 41.465s
[INFO] Finished at: Mon May 09 00:05:06 MSD 2011
[INFO] Final Memory: 26M/70M
...
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1 Answer

  1. Editorial Team

    Just a thought but…

    You say you’ve placed applicationContext.xml in the test/resources folder – have you recreated the directory structure you define within that directory? I.e. test/resources/META-INF/spring/applicationcontext.xml? If not, then the applicationcontext will appear in test-classes/ and won’t be found according to the classpath location you’ve defined… If it’s just in test/resources, change your @ContextConfiguration annotation to

    @ContextConfiguration(locations = {"classpath:applicationContext.xml"})`

    `

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