Spring 注释@Transactional donds'；在春季和夏季，我们将不会对拯救行动生效；hibernate项目

我使用spring4+hibernate4创建了一个简单的项目。 我实现了CRUD函数，但我发现使用annotation

@Transactional

更新操作不起作用

如果添加

session.flush（）

，则可以更新数据

但是我的代码中有

@Transactional

，为什么我必须使用

flush（）

spring-common.xml：

<tx:annotation-driven transaction-manager="transactionManager"/>

<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
    <property name="url" value="jdbc:mysql://localhost:3306/cang7"></property>
    <property name="username" value="root"></property>
    <property name="password" value="phpwind.net"></property>
</bean>

<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource"></property>
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
            <prop key="hibernate.hbm2ddl.auto">update</prop>
            <prop key="hibernate.show_sql">true</prop>
            <prop key="hibernate.format_sql">true</prop>
        </props>
    </property>
    <property name="packagesToScan">
        <list>
            <value>com.study.user.domain</value>
        </list>
    </property>
</bean>

<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
    <property name="sessionFactory" ref="sessionFactory"></property>
</bean>

我的控制器：

 @Controller
 @RequestMapping("/user")
 public class UserController {

@Resource(name = "userService")
private IUserService userService;

@RequestMapping("/getAllUser")
public String getAllUser(HttpServletRequest request) {

    request.setAttribute("userList", userService.getAllUser());

    return "/index";
}

@RequestMapping("/getUser")
public String getUser(int id, HttpServletRequest request) {

    request.setAttribute("user", userService.getUser(id));

    return "/editUser";
}

@RequestMapping("/toAddUser")
public String toAddUser() {
    return "/addUser";
}

@RequestMapping("addUser")
public String addUser(User user, HttpServletRequest request) {
    userService.addUser(user);
    return "redirect:/user/getAllUser";
}

@RequestMapping("updateUser")
public String updateUser(User user, HttpServletRequest request) {
    userService.updateUser(user);
    return "redirect:/user/getAllUser";
}

}我已经解决了这个问题

原因是UserService被加载了两次。 我应该添加spring-mvc.xml

<context:component-scan base-package="com.study.user">
    <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service" />
</context:component-scan>

<mvc:annotation-driven />
<mvc:resources location="/js/" mapping="/js/**"/>  

<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/"></property>
    <property name="suffix" value=".jsp"></property>
</bean>

   <context:component-scan base-package="com.study.user" >
     <context:exclude-filter type="annotation"      expression="org.springframework.stereotype.Service" />
   </context:component-scan>

你的

updateUser

方法是如何调用的，你有

hibernate.properties

或

hibernate.cfg.xml

吗？如果有，请发布它。你从Spring上下文中获得

UserDAO

吗？我已经更新了我的代码，请帮我看看~my“getAllUser”方法可以正常工作，只有“update”不能工作

 @Controller
 @RequestMapping("/user")
 public class UserController {

@Resource(name = "userService")
private IUserService userService;

@RequestMapping("/getAllUser")
public String getAllUser(HttpServletRequest request) {

    request.setAttribute("userList", userService.getAllUser());

    return "/index";
}

@RequestMapping("/getUser")
public String getUser(int id, HttpServletRequest request) {

    request.setAttribute("user", userService.getUser(id));

    return "/editUser";
}

@RequestMapping("/toAddUser")
public String toAddUser() {
    return "/addUser";
}

@RequestMapping("addUser")
public String addUser(User user, HttpServletRequest request) {
    userService.addUser(user);
    return "redirect:/user/getAllUser";
}

@RequestMapping("updateUser")
public String updateUser(User user, HttpServletRequest request) {
    userService.updateUser(user);
    return "redirect:/user/getAllUser";
}

   <context:component-scan base-package="com.study.user" >
     <context:exclude-filter type="annotation"      expression="org.springframework.stereotype.Service" />
   </context:component-scan>