Cannot autowire Spring Data Repository - spring

Question

I'm creating a simple application with Spring, Hibernate and MySQL database. I've done some research, but no answer was accurate. I have a repository interface, which is an extension of BaseCrudRepository, which extends ReadOnlyRepository, which is an extension of org.springframework.data.repository.Repository.
Code is as below:
package dziecko.repositories;
import dziecko.models.AreaDate;
import dziecko.utils.BaseCrudRepository;
public interface AreaDateRepository extends BaseCrudRepository<AreaDate, Integer> {}
AreaDate is a simple entity:
#Entity
#Table(name = "AREADATES")
public class AreaDate extends AbstractBase implements DtoGenerator<AreaDateDto> {
private static final long serialVersionUID = -2956040373671316338L;
#Column(name = "START_TIME")
private Date startTime;
#Column(name = "END_TIME")
private Date endTime;
#Column(name = "ALARM", nullable = true)
private Boolean alarm;
public AreaDate() {
}
public Date getStartTime() {
return startTime;
}
public Date getEndTime() {
return endTime;
}
public Boolean getAlarm() {
return alarm;
}
#Override
public AreaDateDto createDto() {
return new AreaDateDto(id, startTime, endTime, alarm);
}
}
Here is my web.xml file:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/app-context.xml</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
</web-app>
app-context.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:beans="http://www.springframework.org/schema/beans" xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd">
<!-- Enable #Controller annotation support -->
<mvc:annotation-driven />
<jpa:repositories base-package="dziecko.repositories" />
<context:annotation-config />
<!-- Scan classpath for annotations (eg: #Service, #Repository etc) -->
<context:component-scan base-package="dziecko.rests, dziecko.services">
<context:exclude-filter expression="org.springframework.web.bind.annotation.RestController" type="annotation" />
</context:component-scan>
<!-- JDBC Data Source. -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://127.0.0.1:3306/dziecko" />
<property name="username" value="root" />
<property name="password" value="" />
<property name="validationQuery" value="SELECT 1" />
</bean>
<!-- Hibernate Session Factory -->
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
</property>
<property name="packagesToScan">
<array>
<value>dziecko.models</value>
</array>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">create</prop>
<prop key="hibernate.ejb.naming_strategy">org.hibernate.cfg.ImprovedNamingStrategy</prop>
<prop key="hibernate.connection.charSet">UTF-8</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">true</prop>
<prop key="jadira.usertype.autoRegisterUserTypes">true</prop>
<prop key="jadira.usertype.databaseZone">jvm</prop>
<prop key="hibernate.id.new_generator_mappings">true</prop>
</props>
</property>
</bean>
<!-- Hibernate Transaction Manager -->
<bean id="transactionManager"
class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<!-- Activates annotation based transaction management -->
<tx:annotation-driven transaction-manager="transactionManager" />
</beans>
The problem is that even this simple test fails, because repository which is supposed to be autowired is null:
package dziecko.tests;
import org.springframework.beans.factory.annotation.Autowired;
import org.testng.Assert;
import org.testng.annotations.Test;
import dziecko.repositories.AreaDateRepository;
public class SpringConfigurationTest {
#Autowired
private AreaDateRepository adRepo;
#Test
public void shouldWireComponents() {
Assert.assertNotNull(adRepo);
}
}
java.lang.AssertionError: expected object to not be null
All entities are created inside the database. I just can't figure out how to configure those Spring repositories properly. Everything seems to be done similar to http://docs.spring.io/spring-data/data-commons/docs/1.5.1.RELEASE/reference/html/repositories.html. Anyone has an idea how autowiring can be fixed here?

Answer 1

This is happening because your test class is Spring unaware. You need to:
include spring-test jar in your (test) classpath via Maven dependency or other means
From your test I can see you are using TestNG so the above jar will make for you available the TestNG Spring test runner:
Annotate your class with (supposing you don't have test context. That would have been a better practice btw):
#ContextConfiguration(locations = { "classpath:app-context.xml" })
public class SpringConfigurationTest extends AbstractTestNGSpringContextTests
{
//...
}

Answer 2

So I had app-context.xml file in WEB-INF folder and I didn't attach this context to test. Working version:
#ContextConfiguration("/META-INF/app-context.xml")
public class SpringConfigurationTest extends AbstractTestNGSpringContextTests {
#Autowired
private AreaDateRepository adRepo;
#Test
public void shouldWireComponents() {
Assert.assertNotNull(adRepo);
}
}