我刚刚开始了我的 Spring 之旅，所以我是新手。
我正在尝试向 DAO 编写测试。
当我运行测试时，堆栈跟踪返回：
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private pl.com.tt.persistence.TestEntityDaoJPA pl.com.tt.tests.TestPersistenceDAO.testEntityDaoJPA; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [pl.com.tt.persistence.TestEntityDaoJPA] 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)}
看起来我不应该在 TestEntityDAO 实现之上使用@Autowired。当我删除 @Autowire 注释堆栈跟踪返回错误调用方法 testEntityDaoJPA.getAll(sql)。
这是我的测试课：
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration
public class TestPersistenceDAO extends AbstractTransactionalJUnit4SpringContextTests{
@Autowired
private TestEntityDaoJPA testEntityDaoJPA;
@Test
public void testDAO(){
String sql = "SELECT r FROM TestEntity r WHERE ROWNUM<200";
testEntityDaoJPA.getAll(sql);
}
}
我的 DAO 课程：
@Component
public class TestEntityDaoJPA implements TestEntityDao {
@Autowired
@PersistenceContext private EntityManager em;
@Transactional
public List<TestEntity> getAll(String sql){
TypedQuery<TestEntity> q = em.createQuery(sql, TestEntity.class );
List<TestEntity> result = q.getResultList();
return result;
}
}
XML 上下文文件：
<?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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<context:component-scan base-package="pl.com.tt.tests" />
<context:annotation-config/>
<tx:annotation-driven/>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url"
value="jdbc:oracle:thin:@192.168.80.128:1521:orcl" />
<property name="username" value="findfnorg" />
<property name="password" value="findfnorg" />
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="pl.com.tt.tests" />
<property name="persistenceProviderClass"
value="org.hibernate.ejb.HibernatePersistence" />
<property name="loadTimeWeaver">
<bean
class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect
</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<bean id="transactionManager"
class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
</beans>