Question

各位正在使用Spring-MVc和hibernate以及Spring Transaction

创建一个Web应用程序

当我将@Repository添加到我的类时，它会产生错误：错误是：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'numberGeneratorImpl' defined in file [E:\JAVA\BankEE\out\artifacts\BankEE_war_exploded\WEB-INF\classes\model\bl\NumberGeneratorImpl.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: 'sessionFactory' or 'hibernateTemplate' is required
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1513)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:293)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:290)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:191)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:633)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:651)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:602)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:665)
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:521)
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:462)
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
at javax.servlet.GenericServlet.init(GenericServlet.java:160)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1216)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1135)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1031)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4957)
at org.apache.catalina.core.StandardContext$3.call(StandardContext.java:5284)
at org.apache.catalina.core.StandardContext$3.call(StandardContext.java:5279)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
Caused by: java.lang.IllegalArgumentException: 'sessionFactory' or 'hibernateTemplate' is required
at     org.springframework.orm.hibernate3.support.HibernateDaoSupport.checkDaoConfig(HibernateDaoSupport.java:123)
at org.springframework.dao.support.DaoSupport.afterPropertiesSet(DaoSupport.java:44)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1572)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean

现在我将向您展示我的应用类和界面：

这是INumberGenerator接口：

public interface INumberGenerator {

public String returnNumber();
}

这是NumberGeneratorImpl（在这个类中因为@Repository给我错误）：

@Repository
public class NumberGeneratorImpl extends HibernateDaoSupport implements INumberGenerator {

@Override
@Transactional
public String returnNumber() {
    List<String> list = getHibernateTemplate().find("select n.number from NumberGenerator n ");
    Integer newNumber = Integer.parseInt(list.get(0))+1;
    getHibernateTemplate().bulkUpdate("update NumberGenerator n set n.number=?",newNumber.toString());
    return list.get(0);
}

}

这是我的控制器（Spring-mvc）：

@Controller
public class MainController {
    @Autowired
    INumberGenerator numberGenerator;

 @RequestMapping(//something)
 public String test(//request and response)
  {
     numberGenerator.returnNumber();


 }

最后这是我的mvc-dispatcher-servlet.xml

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

<mvc:annotation-driven/>
<tx:annotation-driven />

<context:annotation-config />

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


<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">


</bean>
<bean id="driverManagerDataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
    <property name="url" value="jdbc:mysql://localhost:3306/bankee"/>
    <property name="username" value="root"/>
    <property name="password" value="myjava123"/>

</bean>
<bean id="localSessionFactoryBean" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
    <property name="dataSource" ref="driverManagerDataSource"/>
    <property name="mappingResources">
   <list>
        //hbm definitions
   </list>
    </property>
    <property name="hibernateProperties">
        <props>

            <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
            <prop key="hibernate.show_sql">true</prop>

        </props>
    </property>
</bean>
<bean id="numberGenerator" class="model.bl.NumberGeneratorImpl">
    <property name="sessionFactory" ref="localSessionFactoryBean"/>
</bean>

<bean id="transactionManager"
      class="org.springframework.orm.hibernate3.HibernateTransactionManager">
    <property name="sessionFactory" ref="localSessionFactoryBean" />
</bean>


</beans>

任何人都可以告诉我@Repository有什么问题??? 当我删除@Repository

时，错误将消失

Answer 1

我认为你的mvc-dispatcher-servlet.xml文件中遗漏了以下行。

<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
<property name="sessionFactory" ref="localSessionFactoryBean"/>
</bean>

Answer 2

你有一个component-scan可以检索所有的@Repository，实际上问题在于你的spring上下文中没有的bean“numberGeneratorImpl”。您必须从组件扫描中排除它，否则您有2个NumberGeneratorImpl.class bean

numberGeneratorImpl
numberGenerator

你有两种方式..

第一个解决方案

添加您的上下文

<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
      <property name="sessionFactory" ref="localSessionFactoryBean"/>
</bean>

删除以下声明

<bean id="numberGenerator" class="model.bl.NumberGeneratorImpl">
    <property name="sessionFactory" ref="localSessionFactoryBean"/>
</bean>

并修改

@Repository
@Qualifier("numberGenerator")
public class NumberGeneratorImpl extends HibernateDaoSupport implements INumberGenerator {

第二个解决方案

从component-scan

中排除班级

<context:component-scan base-package="model.bl">
    <!--other filters-->
    <!--.......-->
    <context:exclude-filter expression="model\.bl\.NumberGeneratorImpl" type="regex" />
</context:component-scan>

我希望它有用。

添加.. bean hibernateTemplate不是必需的，当您使用HibernateDaoSupport时，只需要sessionFactory或hibernateTemplate中的一个。您还可以为localSessionFactoryBean创建别名。

<alias name="localSessionFactoryBean" alias="sessionFactory" />

在Spring Transaction Manager中创建bean时出错

2 个答案: