#Autowired fails with JUnit & Spring - spring

Question

Really need help. I used JUnit(4.6) plus Spring(3.0.5) for unit testing. When I tried to autowire a service object in my test class, I got a NoSuchBeanDefinitionException.
The JUnit code:
package com.aaa.service.impl;
#ContextConfiguration(locations = { "classpath:/spring/applicationContext.xml",
"classpath:/spring/applicationContext-aop.xml",
"classpath:/spring/applicationContext-dao.xml",
"classpath:/spring/applicationContext-service.xml" })
#RunWith(SpringJUnit4ClassRunner.class)
public class TestManageTargetServiceImpl {
#Autowired
ManageTargetServiceImpl manageTargetServiceImpl;
#Test
public void testQueryFinancialMonthList() {
List<Map<String, Object>> value = new ArrayList<Map<String, Object>>();
ManageTargetDao manageTargetDao = mock(ManageTargetDao.class);
when(manageTargetDao.queryFinancialMonthList()).thenReturn(value);
manageTargetServiceImpl.setManageTargetDao(manageTargetDao);
// I hope it return null
assertNull(manageTargetServiceImpl.queryFinancialMonthList());
}
}
The applicationContext-service.xml code:
<context:annotation-config />
<bean id="manageTargetService" class="com.aaa.service.impl.ManageTargetServiceImpl">
<property name="manageTargetDao" ref="manageTargetDao"></property>
</bean>
The error track:
00:51:28,625 ERROR main context.TestContextManager:324 - Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener#882dfc] to prepare test instance [com.aaa.service.impl.TestManageTargetServiceImpl#ce2db0]
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.aaa.service.impl.TestManageTargetServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.aaa.service.impl.ManageTargetServiceImpl com.aaa.service.impl.TestManageTargetServiceImpl.manageTargetServiceImpl; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.aaa.service.impl.ManageTargetServiceImpl] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {#org.springframework.beans.factory.annotation.Autowired(required=true)}
Some log:
00:51:26,828 DEBUG main context.TestContextManager:282 - beforeTestClass(): class [class com.aaa.service.impl.TestManageTargetServiceImpl]
00:51:26,828 DEBUG main annotation.ProfileValueUtils:68 - Retrieved #ProfileValueSourceConfiguration [null] for test class [com.aaa.service.impl.TestManageTargetServiceImpl]
00:51:26,828 DEBUG main annotation.ProfileValueUtils:80 - Retrieved ProfileValueSource type [class org.springframework.test.annotation.SystemProfileValueSource] for class [com.aaa.service.impl.TestManageTargetServiceImpl]
00:51:26,828 DEBUG main context.TestContextManager:315 - prepareTestInstance(): instance [com.aaa.service.impl.TestManageTargetServiceImpl#ce2db0]
00:51:26,843 DEBUG main support.DependencyInjectionTestExecutionListener:73 - Performing dependency injection for test context [[TestContext#e0eb3f testClass = TestManageTargetServiceImpl, locations = array<String>['classpath:/spring/applicationContext.xml', 'classpath:/spring/applicationContext-aop.xml', 'classpath:/spring/applicationContext-dao.xml', 'classpath:/spring/applicationContext-service.xml'], testInstance = com.aaa.service.impl.TestManageTargetServiceImpl#ce2db0, testMethod = [null], testException = [null]]].
00:51:26,843 DEBUG main support.AbstractGenericContextLoader:75 - Loading ApplicationContext for locations [classpath:/spring/applicationContext.xml,classpath:/spring/applicationContext-aop.xml,classpath:/spring/applicationContext-dao.xml,classpath:/spring/applicationContext-service.xml].
00:51:26,968 INFO main xml.XmlBeanDefinitionReader:315 - Loading XML bean definitions from class path resource [spring/applicationContext.xml]
00:51:27,187 INFO main xml.XmlBeanDefinitionReader:315 - Loading XML bean definitions from class path resource [spring/applicationContext-aop.xml]
00:51:27,312 INFO main xml.XmlBeanDefinitionReader:315 - Loading XML bean definitions from class path resource [spring/applicationContext-dao.xml]
00:51:27,421 INFO main xml.XmlBeanDefinitionReader:315 - Loading XML bean definitions from class path resource [spring/applicationContext-service.xml]
00:51:27,453 INFO main support.GenericApplicationContext:456 - Refreshing org.springframework.context.support.GenericApplicationContext#16c14e7: startup date [Tue Jan 01 00:51:27 NZDT 2013]; root of context hierarchy
00:51:27,718 INFO main config.PropertyPlaceholderConfigurer:177 - Loading properties file from class path resource [jdbc.properties]
00:51:27,796 INFO main support.DefaultListableBeanFactory:555 - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory#2938d8: defining beans [loggingAop,org.springframework.aop.config.internalAutoProxyCreator,org.springframework.aop.aspectj.AspectJPointcutAdvisor#0,service,loginDao,manageTargetDao,org.springframework.beans.factory.config.PropertyPlaceholderConfigurer#0,dataSource,txManager,txAdvice,txDAO,org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,loginService,manageTargetService]; root of factory hierarchy

Answer 1

Guessing here - but given that injection of a class type ManageTargetServiceImpl is failing, I think the reason is that a proxy is getting created for ManageTargetServiceImpl and so the type of the bean will not be ManageTargetServiceImpl anymore but the interface of that class.
from Biju Kunjummen

Answer 2

Look at your property id. It should be manageTargetServiceImpl in your applicationContext-service.xml
Change it to this:
<bean id="manageTargetServiceImpl" class="com.aaa.service.impl.ManageTargetServiceImpl">
<property name="manageTargetDao" ref="manageTargetDao"></property>
</bean>