我根据以下使用Spring 4.1和Hibernate 4.3.6的示例设置了一个Spring / Hibernate后端:
http://www.sivalabs.in/2011/02/springhibernate-application-with-zero.html
到目前为止我基本上已经完成了所有工作,但是有一个小配置问题我无法克服:如果我尝试保存实体,我会得到以下StackTrace:
org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode (FlushMode.MANUAL): Turn your Session into FlushMode.COMMIT/AUTO or remove 'readOnly' marker from transaction definition.
at org.springframework.orm.hibernate4.HibernateTemplate.checkWriteOperationAllowed(HibernateTemplate.java:1135)
at org.springframework.orm.hibernate4.HibernateTemplate$12.doInHibernate(HibernateTemplate.java:620)
at org.springframework.orm.hibernate4.HibernateTemplate$12.doInHibernate(HibernateTemplate.java:617)
at org.springframework.orm.hibernate4.HibernateTemplate.doExecute(HibernateTemplate.java:340)
at org.springframework.orm.hibernate4.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:308)
at org.springframework.orm.hibernate4.HibernateTemplate.save(HibernateTemplate.java:617)
at com.test.database.dao.UserSecurityQuestionDAOImpl.save(UserSecurityQuestionDAOImpl.java:40)
at com.test.database.service.UserSecurityQuestionService.save(UserSecurityQuestionService.java:20)
at com.test.database.UserSecurityQuestionTest.basicCreationAndRetrievalTest(UserSecurityQuestionTest.java:37)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:24)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
我的事务指令放在Service Bean中,如下所示:
@Service
@Transactional
public class UserSecurityQuestionService implements UserSecurityQuestionDAO{
@Autowired
private UserSecurityQuestionDAO userSecurityQuerstionDAO;
@Override
@Transactional(readOnly=false)
public void save(UserSecurityQuestion userSecurityQuestion) {
userSecurityQuerstionDAO.save(userSecurityQuestion);
}
这是我的保存方法的DAO实现:
@Repository
public class UserSecurityQuestionDAOImpl implements UserSecurityQuestionDAO {
@Autowired
private HibernateTransactionManager transactionManager;
public void save(UserSecurityQuestion userSecurityQuestion) {
Session session = transactionManager.getSessionFactory().openSession();
Transaction tx = session.beginTransaction();
session.persist(userSecurityQuestion);
tx.commit();
session.close();
}
从数据库中选择工作正常,但拒绝插入/更新抛出错误消息。我错过了什么?
更新
UserSecurityQuestionDAOImpl:
public class UserSecurityQuestionDAOImpl implements UserSecurityQuestionDAO{
@Autowired
private SessionFactory sessionFactory;
public void save(UserSecurityQuestion userSecurityQuestion) {
this.sessionFactory.getCurrentSession().save(userSecurityQuestion);
}
UserSecurityQuestionDAO / UserSecurityQuestionService - 接口:
public interface UserSecurityQuestionService {
public void save(UserSecurityQuestion userSecurityQuestion);
public UserSecurityQuestion findById(Short id);
public List<UserSecurityQuestion> findAll();
public void delete(UserSecurityQuestion userSecurityQuestion);
public void deleteById(Short... id);
}
服务实施:
@Service
public class UserSecurityQuestionServiceImpl implements UserSecurityQuestionService {
@Autowired
private UserSecurityQuestionDAO userSecurityQuestionDAO;
@Transactional
public void save(UserSecurityQuestion userSecurityQuestion) {
userSecurityQuestionDAO.save(userSecurityQuestion);
}
用于测试的单元测试代码:
public class UserSecurityQuestionTest {
private AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
private UserSecurityQuestionService usqService;
@Before
public void setUp(){
//Setup App Context
ctx.scan("com.test.database");
ctx.refresh();
//Initilize Service Bean
usqService = ctx.getBean("userSecurityQuestionService",UserSecurityQuestionServiceImpl.class);
}
新问题:如果我将@Autowired
添加到private UserSecurityQuestionService usqService;
并省略Setup-Part,我将获得Null指针异常。如果我保留代码,我会得到org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'userSecurityQuestionService' is defined
答案 0 :(得分:1)
我可以看到你的服务类和你的dao实现了相同的接口,并且你通过它的类自动装备服务中的dao。
我认为您的服务也由其控制器中的类自动装配。最好为服务和dao提供单独的接口,以允许使用接口按类型进行自动装配。这样,Spring将使用JDK代理(默认)来实现服务bean周围的事务代理。
替代方法是使用<tx:annotation-driven proxy-target-class="true/>
&#34;,但是您需要在路径中使用CGLIB。