SSH集成的有关问题NullPointerException sessionFactory注入的有关问题

2012-12-15

SSH集成的问题NullPointerException sessionFactory注入的问题新学java,其中在SSH集成的时候,sessionFacto

SSH集成的问题NullPointerException sessionFactory注入的问题
新学java,其中在SSH集成的时候,sessionFactory注入的问题,请各位高手给指导指导!
applicationContext.xml配置


<context:annotation-config />
<bean class="org.springframework.context.annotation.CommonAnnotationBeanPostProcessor"/> 

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

<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="com.microsoft.sqlserver.jdbc.SQLServerDriver" />
<property name="url"
value="jdbc:sqlserver://127.0.0.1:1433;DataBaseName=demo" />
<property name="username" value="sa" />
<property name="password" value="123456" />
</bean>

<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="myDataSource" />
<property name="packagesToScan">
<list>
<value>com.model</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</prop>
<prop key="current_session_context_class">thread</prop>
<prop key="show_sql">true</prop>
<prop key="hbm2ddl.auto">update</prop>
</props>
</property>
</bean>

<aop:config>
<aop:pointcut expression="execution(public * com.serviceImpl..*.*(..))"
id="transactionPointCut" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="transactionPointCut" />
</aop:config>

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

<tx:advice id="txAdvice" transaction-manager="txManager">
<tx:attributes>
<tx:method name="*" propagation="REQUIRED" />
</tx:attributes>
</tx:advice>

struts.xml配置


<struts>
<include file="struts-default.xml"/>
<constant name="struts.devMode" value="true" />

<package name="default" namespace="/" extends="struts-default">
<default-action-ref name="index"/>
<action name="index">
<result>/index.jsp</result>
</action>
<action name="regist" class="com.action.UserAction" method="add">
<result name="success">/message.jsp</result>
<result name="error">/error.jsp</result>
</action>
</package>

</struts>

web.xml配置


<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

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

<context-param>
<param-name>contextConfigLocation</param-name> 
 
<param-value>/WEB-INF/classes/applicationContext.xml</param-value>
</context-param>

所用到的包.

我不知道是我配置错误,还是怎么的我注入sessionFactory始终为空


SessionFactory sessionFactory;

public SessionFactory getSessionFactory() {
return sessionFactory;
}
@Resource(name="sessionFactory")
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}

当我使用


public User get(int id) {
Session session = sessionFactory.getCurrentSession();
User user = (User) session.load(User.class, id);
return user;
}

就出现空指针,请各位高手告诉我那里错了!
[最优解释]
看看是不是web.xml
/****************************************************/
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>


  
  <servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <init-param>
      <param-name>debug</param-name>
      <param-value>2</param-value>
    </init-param>
    <init-param>
      <param-name>detail</param-name>
      <param-value>2</param-value>
    </init-param>
    <load-on-startup>2</load-on-startup>
  </servlet>

  
  <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>

  <context-param>
  <param-name>contextConfigLocation</param-name>

   <param-value>classpath*:applicationContext-*.xml</param-value>
  </context-param>

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

<filter>
    <filter-name>Spring character encoding filter</filter-name>

    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
    <param-name>encoding</param-name>
    <param-value>GBK</param-value>
    </init-param>
  </filter>
<filter-mapping>
    <filter-name>Spring character encoding filter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

<filter>
    <filter-name>hibernateFilter</filter-name>
    <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
  </filter>
<filter-mapping>
    <filter-name>hibernateFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>



</web-app>

[其他解释]
看看这部分
/**********************************/
<filter>
    <filter-name>hibernateFilter</filter-name>
    <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
  </filter>
<filter-mapping>
    <filter-name>hibernateFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

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SSH集成的有关问题NullPointerException sessionFactory注入的有关问题