Spring自动装配无法正常工作

时间:2015-06-25 04:19:19

标签: java spring spring-data

我目前正在使用Spring Data Neo4j开发一个应用程序。这是我第一次使用Spring框架。

但是,自动连接的注释不起作用,我总是得到null。这是代码:

    public class CreateDiaryTransaction extends Transaction {
    @Autowired
    DirayRepository repository;

    @Override
    public Object perform(Map<String, Object> parameters) {
        // TODO Auto-generated method stub
        Diary diary = (Diary) DiaryFactory.getInstance().create(parameters);
        repository.save(diary);
        return diary.toJsonRepre();
    }
}

然后我在单元测试中测试它:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({ "/applicationContext.xml" })
public class CreateDiaryTransactionTest {

    @Test
    public void test() {
        Transaction transaction = new CreateDiaryTransaction();
        Map<String, Object> parameters = new HashMap<>();
        parameters.put("title", "Test");
        parameters.put("weather", "sun");
        parameters.put("mood", "happy");
        parameters.put("html", "<a href=\"javascript:void(0)\">link</a>");
        parameters.put("images", new ArrayList<Image>());
        try {
            transaction.execute(parameters);
        } catch (Exception e) {
            fail("Exception occur");
        }
    }
}

当我运行它时,我得到了null对象异常。但是,当我将存储库直接放在单元测试中时,它工作正常。这是另一个有效的测试:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({ "/applicationContext.xml" })
public class DiaryRepositoryTest {
    @Autowired
    DirayRepository repository;

    @Test
    @Transactional
    public void testSaveDiary() {
        Diary diary = (Diary) DiaryFactory.getInstance().create(
                new HashMap<String, Object>());
        repository.save(diary);

        Diary retrivedDiary = repository.findOne(diary.getGraphId());
        assertEquals(diary, retrivedDiary);
    }

}

这是我的应用程序上下文:

<context:annotation-config />
<neo4j:config storeDirectory="target/data/pamela"
    base-package="com.bond.pamela.domain" />
<neo4j:repositories base-package="com.bond.pamela.persistence" />
<tx:annotation-driven mode="aspectj" />

<bean id="conversionService"
    class="org.springframework.context.support.ConversionServiceFactoryBean">
    <property name="converters">
        <set>
            <bean
                class="com.bond.pamela.domain.valueObject.converter.ImageToJsonConverter" />
            <bean
                class="com.bond.pamela.domain.valueObject.converter.JsonToImageConverter" />
        </set>
    </property>
</bean>

我想我以某种方式将存储库放在spring上下文之外,但是我怎么能得到它呢? THX

2 个答案:

答案 0 :(得分:1)

您需要在申请环境中关注

<context:component-scan base-package="packagename.package" />

此处包名称是包含所有带注释的类的包。

请看这篇文章了解更多信息:

Spring MVC: Difference between context:annotation-config vs context:component-scan

答案 1 :(得分:0)

确保您已在@Repository的实施中编写了@ComponentDirayRepository注释,并且您已编写了组件扫描 applicationContext.xml

DirayRepository

的示例代码
@Repository
  public class DirayRepositoryImpl implements DirayRepository {
   void save() { ...}

  }