Spring Hibernate整合有关问题，求大神帮忙~

Spring Hibernate整合问题，求大神帮忙~~~~~~~
SSH整合，全部采用注解配置。

Struts已经整合好了，将Hibernate整合到Spring时，出现了空指针。

2015-05-07 10:10:58,495 DEBUG (com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor:84) - Error calling method through OGNL: object: [com.gmc.action.user.LoginAction@433a316a] method: [execute] args: [[]]
java.lang.NullPointerException
	at com.gmc.dao.BaseDaoHibernate4.get(BaseDaoHibernate4.java:27)
	at com.gmc.service.UserServiceImpl.checkUser(UserServiceImpl.java:37)
	at com.gmc.action.user.LoginAction.execute(LoginAction.java:28)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:870)
	at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1293)
	at ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68)
	
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)
2015-05-07 10:10:58,497 DEBUG (com.opensymphony.xwork2.DefaultActionInvocation:76) - No result returned for action com.gmc.action.user.LoginAction at null
2015-05-07 10:10:58,498 DEBUG (com.opensymphony.xwork2.interceptor.I18nInterceptor:80) - after Locale=zh_CN
2015-05-07 10:10:58,498 DEBUG (com.opensymphony.xwork2.interceptor.I18nInterceptor:76) - intercept } 

文件目录：

具体代码如下：
applicationContext.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:p="http://www.springframework.org/schema/p"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context-4.1.xsd">
 
 	
 	
 	
 	
 	<!-- 定义数据源Bean，使用C3P0数据源实现，并注入数据源的必要信息 -->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
		destroy-method="close"
		p:driverClass="com.mysql.jdbc.Driver"
		p:jdbcUrl="jdbc:mysql://127.0.0.1:3306/gmc"
		p:user="root"
		p:password="root"
		p:maxPoolSize="40"
		p:minPoolSize="2"
		p:initialPoolSize="2"
		p:maxIdleTime="30"/>
		
	<!-- 定义Hibernate的SessionFactory，SessionFactory需要依赖数据源，注入dataSource -->
	<bean id="sessionFactory"  class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" p:dataSource-ref="dataSource">
		<!-- annotatedClasses用来列出全部持久化类 -->
		<property name="annotatedClasses">
			<list>
				<!-- 以下用来列出所有的PO类-->
				<value>com.gmc.entity.User</value>
				<value>com.gmc.entity.Article</value>
			</list>
		</property>
		<!-- 定义Hibernate SessionFactory的属性 -->
		<property name="hibernateProperties">
			<props>
				<!-- 指定Hibernate的连接方言 -->
				<prop key="hibernate.dialect">
					org.hibernate.dialect.MySQL5InnoDBDialect</prop>
				<!--是否根据Hiberante映射创建数据表 -->
				<prop key="hibernate.hbm2ddl.auto">update</prop>
				<prop key="hibernate.show_sql">true</prop>
				<prop key="hibernate.format_sql">true</prop>				
			</props>
		</property>
	</bean>
	
	
	<context:component-scan base-package="com.gmc.*"/>
	<!-- <context:component-scan base-package="com.gmc.service"/>
	<context:component-scan base-package="com.gmc.dao"/>
	<context:component-scan base-package="com.gmc.entity"/>
	<context:component-scan base-package="com.gmc.action.*"/>	 -->
</beans>

LoginAction:

package com.gmc.action.user;

import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;

import com.gmc.service.UserService;
import com.gmc.service.UserServiceImpl;
import com.opensymphony.xwork2.ActionSupport;



@Namespace("/user")
@Controller
public class LoginAction extends ActionSupport{
	private UserServiceImpl userServiceImpl;
	
	@Autowired
	private void setUserService(UserServiceImpl userServiceImpl){
		this.userServiceImpl = userServiceImpl;
	}
	
	public String execute()  {
		
		
		System.out.println("LoginAction");
		if (userServiceImpl.checkUser("ccc", "aaa")) {//
			System.out.println("##############");
		}else {
			System.out.println("@@@@@@@@@@@@@@@");
		}
		
		
		return SUCCESS;
	}
}

UserServiceInpl:

package com.gmc.service;

import org.hibernate.Session;
import org.hibernate.Transaction;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.gmc.dao.UserDao;
import com.gmc.dao.UserDaoHibernate4;
import com.gmc.entity.User;

@Service
public class UserServiceImpl implements UserService {

	private UserDaoHibernate4 userDaoHibernate4;
	
	@Autowired
	public void serUserDao(UserDaoHibernate4 userDaoHibernate4) {
		this.userDaoHibernate4 = userDaoHibernate4;
	}
	
	@Override
	public boolean checkUser(String user_name, String user_pass) {

		User user = userDaoHibernate4.get(User.class, 1);
		System.out.println(user.getUserName());
		

		System.out.println("22222222222222222222");
		

		return true;
	}

}

------解决思路----------------------

??
@Repository
public?class?BaseDaoHibernate4<T> extends HibernateDao?implements?BaseDao<T>
{

}
然后下面的什么sessonFactory 不用写， spring帮你注入了

 * 通过主键查询数据
 */
public T get(final Pk id) {
return (T) this.getSession().get(this.entityClass, id);
}
直接这样 就可以 一定要继承hibernateDao