【发布时间】：2015-10-11 15:19:43
【问题描述】：
我有一个使用 Spring MVC + Hibernate 4 的简单 Web 应用程序。但我无法将数据插入 MySQL，我收到以下错误：
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.orm.hibernate4.HibernateSystemException: No CurrentSessionContext configured!; nested exception is org.hibernate.HibernateException: No CurrentSessionContext configured!
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:894)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
我的 spring-context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:beans="http://www.springframework.org/schema/beans"
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/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
<context:annotation-config></context:annotation-config>
<!-- Enables the Spring MVC @Controller programming model -->
<annotation-driven />
<!-- -->
<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<resources mapping="/resources/**" location="/resources/" />
<!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
<beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<beans:property name="prefix" value="/WEB-INF/views/" />
<beans:property name="suffix" value=".jsp" />
</beans:bean>
<context:component-scan base-package="com.elogio.projeto" />
<!-- Configuração do Session Factory -->
<beans:bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<beans:property name="dataSource" ref="dataSource" />
<beans:property name="packagesToScan" value="com.elogio.projeto.model" />
<beans:property name="hibernateProperties">
<beans:props>
<beans:prop key="hibernate.hbm2ddl.auto">validate</beans:prop>
<beans:prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</beans:prop>
<!-- <beans:prop key="hibernate.current_session_context_class">thread</beans:prop> -->
</beans:props>
</beans:property>
</beans:bean>
<!-- Configuração do Transaction Manager -->
<beans:bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<beans:property name="sessionFactory" ref="sessionFactory" />
<beans:property name="dataSource" ref="dataSource" />
</beans:bean>
<tx:annotation-driven transaction-manager="transactionManager"/>
<beans:bean id="persistenceExceptionTranslationPostProcessor"
class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor"/>
<!--Configurações para o DataSource-->
<beans:bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<beans:property name="driverClassName" value="com.mysql.jdbc.Driver"></beans:property>
<beans:property name="username" value="xxxxxxx"></beans:property>
<beans:property name="password" value="xxxxxxx"></beans:property>
<beans:property name="url" value="jdbc:mysql://localhost:3306/elogiosbd"></beans:property>
</beans:bean>
</beans:beans>
我的 DAO
@Transactional
public interface DAO<T, I extends Serializable> {
public T save(T entity);
public void remove(T entity);
public T getById(Class<T> classe, I pk);
}
我的 DAOImpl
@Repository
public abstract class DAOImpl<T, I extends Serializable> implements DAO<T, I> {
@Autowired
private SessionFactory sessionFactory;
public DAOImpl(SessionFactory sessionFactory){
this.sessionFactory = sessionFactory;
}
@Transactional
public T save(T entity) {
//Transaction trans = sessionFactory.getCurrentSession().beginTransaction();
//sessionFactory.openSession().persist(entity);
sessionFactory.getCurrentSession().saveOrUpdate(entity);
System.out.println("Passou pelo Save");
//trans.commit();
return entity;
}
public void remove(T entity) {
if (null != entity) {
sessionFactory.getCurrentSession().delete(entity);
}
}
@SuppressWarnings("unchecked")
public T getById(Class<T> classe, I pk) {
T entidade = (T) sessionFactory.getCurrentSession().load(classe, (Integer) pk);
return entidade;
}
}
我的 UsuarioDAOImpl
@Repository
@Transactional
public class UsuarioDAOImpl extends DAOImpl<Usuario, Integer> implements UsuarioDAO {
@Autowired
public UsuarioDAOImpl(SessionFactory sessionFactory) {
super(sessionFactory);
}
}
我的服务
@Service
@Transactional
public class UsuarioService {
@Autowired
UsuarioDAO usuarioDao;
public void salvar(Usuario usuario){
usuarioDao.save(usuario);
}
}
我的控制器
@Controller
@Transactional
public class HomeController {
private static final Logger logger = LoggerFactory.getLogger(HomeController.class);
/**
* Simply selects the home view to render by returning its name.
*/
//@Autowired
//UsuarioDAOImpl usuarioDAO;
@Autowired
UsuarioService usuarioService;
@RequestMapping(value = "/", method = RequestMethod.GET)
public String home(Locale locale, Model model) {
logger.info("Welcome home! The client locale is {}.", locale);
Usuario usuario = new Usuario();
usuario.setCidade("Belém");
usuario.setEmail("xxxxxxxx");
usuario.setEstado("PA");
usuario.setNome("XXXXXXXXXXXXXXX");
usuario.setSenha("12345678");
usuarioService.salvar(usuario);
Date date = new Date();
DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, locale);
String formattedDate = dateFormat.format(date);
model.addAttribute("serverTime", formattedDate);
model.addAttribute("teste", "0035");
return "home";
}
}
如果我取消注释<prop key="hibernate.current_session_context_class">thread</prop>
我收到一条错误消息，通知我因为没有交易而无法坚持。但是如果我把一个程序化的事务，没有注释功能。我不明白为什么。请帮助我，我花了这么多天来解决这个问题。我正在使用 Spring 3 和 Hibernate 4。
谢谢！！！
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标签： spring hibernate spring-mvc session transactions