测试中未加载 Spring Boot *.hbm.xml 映射文件

Question

The problem is hard to explain, so please have a look at the project: https://github.com/darzz/boot_bug This is the minimal setup, that reproduces the bug.

Description : The application stack is Spring Boot with Spring Data and Spring Batch. There is testNamedQuery.hbm.xml file under src/main/resources/queries .

When running from Application class the batch job finishes successfully, no exceptions in logs. However, when running from ApplicationNotWorking class, which is exact copy, just put in test source root, the batch job fails:

Caused by: org.hibernate.MappingException: Named query not known: findPersonNames
    at org.hibernate.internal.AbstractSessionImpl.getNamedQuery(AbstractSessionImpl.java:177) ~[hibernate-core-4.3.11.Final.jar:4.3.11.Final]
    at org.springframework.batch.item.database.HibernateItemReaderHelper.createQuery(HibernateItemReaderHelper.java:146) ~[spring-batch-infrastructure-3.0.5.RELEASE.jar:3.0.5.RELEASE]
    at org.springframework.batch.item.database.HibernateItemReaderHelper.getForwardOnlyCursor(HibernateItemReaderHelper.java:123) ~[spring-batch-infrastructure-3.0.5.RELEASE.jar:3.0.5.RELEASE]
    at org.springframework.batch.item.database.HibernateCursorItemReader.doOpen(HibernateCursorItemReader.java:185) ~[spring-batch-infrastructure-3.0.5.RELEASE.jar:3.0.5.RELEASE]
    at org.springframework.batch.item.support.AbstractItemCountingItemStreamItemReader.open(AbstractItemCountingItemStreamItemReader.java:144) ~[spring-batch-infrastructure-3.0.5.RELEASE.jar:3.0.5.RELEASE]
    ... 39 common frames omitted

So it looks like that when running tests, *.hbm.xml files are not loaded! After research and debugging, I think, I might have found the cause - persistence unit root url is set for tests to target/test-classes, but the mapping files are in /target/classes.

Possible cause in my opinion may be similar to what's described in here http://blog.carbonfive.com/2007/05/17/using-classpath-vs-classpath-when-loading-spring-resources/

But I have no idea, how to solve this issue in Spring Boot, without creating persistence.xml configuration just for testing purposes. Don't want to copy *.hbm.xml files from main/resources to test/resources either.

Does anyone have an idea?

Answer 1

@Autowired
private ResourceLoader rl;


@Bean
public LocalSessionFactoryBean sessionFactory() throws IOException {
    LocalSessionFactoryBean sessionFactoryBean = new LocalSessionFactoryBean();
    sessionFactoryBean.setMappingLocations(loadResources());
    return sessionFactoryBean;
}

public Resource[] loadResources() {
    Resource[] resources = null;
    try {
        resources = ResourcePatternUtils.getResourcePatternResolver(rl)
            .getResources("classpath:/hibernate/*.hbm.xml");
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return resources;
}

Answer 2

If I understood the problem correctly, You want to run Spring Boot Test which should pick up *.hbm files from classpath.

Where did you keep your *.hbm files?

You have to ensure that all *.hbm files are kept under src/main/resources. Hence when you run test class which will call the actual class which refers to *.hbm files from src/main/resources.

If above solution does not help then you need to share your project file structure.

Answer 3

I looked into the git project. It seems you need to change the ApplicationNotWorking.java since it is a test class hence should be something as below:

//src/test/java

package bug;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import com.stackoverflow.springboot.BatchProcessing;

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = Application.class )
public class ApplicationNotWorking {
    //Inject required bean which you want to test.
    @Autowired
    private BatchProcessing bProcess;
    //If above @Autowired BatchProcessing  do not work then you can object  
    //directly to kick off the test. BatchProcessing bProcess = new 
    //BatchProcessing();    

    //This way you can test each method
    @Test
    public void testBatchProcessing(){
        System.out.println("***BatchProcessing: " + bProcess.batchProcess());
    }
}