不能奥托瓦尔。找不到...类型的bean

Question

你能帮我解决为什么我不能上课吗？？UserDAOImpl类：

@Repository
public class UserDaoImpl implements UserDao {

    @Autowired
    private SessionFactory sessionFactory;

    @Override
    public void addUser(User user) {
        sessionFactory.getCurrentSession().save(user);
    }

    @Override
    public List<User> getUsers() {
        return sessionFactory.getCurrentSession().createSQLQuery("SELECT * FROM user").list();
    }

}

我想让这个班变成另一个班：

@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserDao userDao; //here is the error

    @Override
    public void addUser(User user) {

    }

    @Override
    public List<User> getUsers() {
        return null;
    }

}

@Controller
public class UserController {

    @Autowired
    UserService userService;

    String message = "This should be a list of users";

    @RequestMapping("/user")
    public ModelAndView showMessage() {
        ModelAndView modelAndView = new ModelAndView("user");
        modelAndView.addObject("message", message);
        return modelAndView;
    }

}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

    <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
                <prop key="hibernate.connection.driver_class">org.postgresql.Driver</prop>
                <prop key="hibernate.connection.url">jdbc:postgresql://localhost:8080/****</prop>
                <prop key="hibernate.connection.username">****</prop>
                <prop key="hibernate.connection.password">****</prop>
                <prop key="hibernate.current_session_context_class">thread</prop>
                <prop key="show_sql">true</prop>
            </props>
        </property>
        <property name="annotatedClasses">
            <list>
                <value>model.User</value>
            </list>
        </property>
    </bean>

 </beans>

<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
          http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         version="2.5">

    <display-name>Archetype Created Web Application</display-name>

    <servlet>
        <servlet-name>mvc-dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>mvc-dispatcher</servlet-name>
        <url-pattern>*.htm</url-pattern>
    </servlet-mapping>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/mvc-dispatcher-servlet.xml</param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

</web-app>

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.0.xsd">

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

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/" />
        <property name="suffix" value=".jsp" />
    </bean>

</beans>

Answer 1

不要在打印bean之前打印@autowired。否则，…类型的No bean found将出现@autowired private ProjectRepository ProjectRepository；