Java spring bean配置错误

问题描述：

在我的web应用程序中用GWT，Hibernate和Spring开发，我在application-context.xml文件中设置jobClass bean时遇到。Java spring bean配置错误

我在运行时出现此错误：

Error 500 Error creating bean with name 'schedulerFactory' defined in class path resource [application-context.xml]: 
Cannot resolve reference to bean 'cronTrigger' while setting bean property 'triggers' with key [0]; 

nested exception is org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name 'cronTrigger' defined in class path resource [application-context.xml]: 
Cannot resolve reference to bean 'exampleJob1' while setting bean property 'jobDetail'; 

nested exception is org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name 'exampleJob1' defined in class path resource [application-context.xml]: 
Initialization of bean failed; 

nested exception is org.springframework.beans.TypeMismatchException: 
Failed to convert property value of type [fr.web.utils.ExampleJob] to required type [java.lang.Class] for property 'jobClass'; 

nested exception is java.lang.IllegalArgumentException: 
Cannot convert value of type [fr.web.utils.ExampleJob] to required type [java.lang.Class] for property 'jobClass': 
PropertyEditor [org.springframework.beans.propertyeditors.ClassEditor] returned inappropriate value

这里是我的Java类：


public class ExampleJob extends QuartzJobBean { 
    private AbsenceDao absenceDao; 
    @Override 
    protected void executeInternal(JobExecutionContext context) 
    throws JobExecutionException { 
     List untreatedDemands = new ArrayList(); 
     untreatedDemands = absenceDao.getDemandsAskedNotValidated(); 
    } 
    public AbsenceDao getAbsenceDao() { 
     return absenceDao; 
    } 
    public void setAbsenceDao(AbsenceDao absenceDao) { 
     this.absenceDao = absenceDao; 
    } 
}

，这里是我的应用程序的context.xml：

<!-- variables d'environnement - fichier properties --> 
    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" id="placeholderconfig"> 
     <property name="fileEncoding" value="UTF-8"/> 
     <property name="locations"> 
      <list> 
       <value>classpath:internal.properties</value> 
      </list> 
     </property> 
    </bean> 

    <!-- Configuration du crontrigger --> 
    <bean id="schedulerFactory" class="org.springframework.scheduling.quartz.SchedulerFactoryBean"> 
     <property name="triggers"> 
      <list> 
       <ref bean="cronTrigger" /> 
      </list> 
     </property> 
    </bean> 
    <bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean"> 
     <property name="jobDetail"> 
      <ref local="exampleJob1" /> 
     </property> 

     <property name="cronExpression"> 
      <util:constant static-field="fr.web.utils.APP_VAR.CRON_EXPRESSION" /> 
     </property> 
    </bean> 

    <bean id="jobClass" class="fr.web.utils.ExampleJob"> 
     <property name="absenceDao" ref="absenceDao"/> 
    </bean> 

    <bean id="exampleJob1" class="org.springframework.scheduling.quartz.JobDetailBean"> 
     <property name="jobClass" ref="jobClass" /> 
     <property name="jobDataAsMap"> 
      <map> 
       <entry key="timeout" value="5" /> 
      </map> 
     </property> 
    </bean> 

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

    <!-- Bean containing all the properties of the application --> 
    <bean class="fr.web.utils.ApplicationProperties" id="applicationProperties" lazy-init="true" scope="singleton"> 
     <constructor-arg index="0" value="classpath:internal.properties"/> 
    </bean> 

    <!-- Bean DAO --> 
    <bean abstract="true" id="abstractDao"> 
     <property name="sessionFactory" ref="sessionFactory"/> 
    </bean> 
    <bean class="fr.web.dao.AbsenceDao" id="absenceDao" parent="abstractDao"/> 

    </bean> 
</beans>

答

财产jobClass需要class，你已经给了bean的reference，所以更改

<bean id="exampleJob1" class="org.springframework.scheduling.quartz.JobDetailBean"> 
    <property name="jobClass" ref="jobClass" /> 
    <property name="jobDataAsMap"> 
     <map> 
      <entry key="timeout" value="5" /> 
     </map> 
    </property> 
</bean>

到（注意：下面value属性）

<bean id="exampleJob1" class="org.springframework.scheduling.quartz.JobDetailBean"> 
    <property name="jobClass" value="fr.acensi.web.utils.ExampleJob" /> 
    <property name="jobDataAsMap"> 
     <map> 
      <entry key="timeout" value="5" /> 
     </map> 
    </property> 
</bean>

谢谢！它工作 – l0r3nz4cc10 2011-04-28 13:23:59

不客气:) – 2011-04-28 13:25:10

答

有，你可能认为整洁与否这里的另一种选择，我喜欢它，因为它使上下文一点清洁剂。

<bean id="exampleJob1" class="org.springframework.scheduling.quartz.JobDetailBean"> 
    <property name="jobClass"> 
    <bean factory-bean="jobClass" factory-method="getClass" /> 
    </property> 
</bean>

问题的细分是因为Jigar Joshi描述的解决方案略有不同。它允许你保持bean jobClass实例化与JobDetailbean的构建分离。

Java spring bean配置错误

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