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          Kim-'s-Blog.Object-Everything.I'm POJO.

          .紀-錄.爲了忘卻的記憶..真的勇士,要敢于直面遇到的問題,敢于正視繁雜的原碼......在實踐中積累!

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          與 數據庫 db 相關操作有兩種:
          1.從DB中讀cronExpression
          2.Job持久化到數據庫
          對于1:
          Quartz 在Spring中動態設置cronExpression
          參考 小刀的blog
          http://www.aygfsteel.com/xiaodaoxiaodao/articles/103437.html 

          通過DB加載cronException

          一個類是可以的
          2個類會出問題

           <bean id="test2" class="cn.edu.hust.mes.service.quartz.Test">  
             
          <property name="scheduler" ref="schedulerFactoryBean"/>         
             
          </bean>  
               
             
          <bean id="test" class="Test">  
             
          <property name="scheduler" ref="schedulerFactoryBean"/>  
             
          </bean>  
               
             
          <bean name="schedulerFactoryBean"  
                       
          class="org.springframework.scheduling.quartz.SchedulerFactoryBean">  
                    
          <property name="triggers">  
                         
          <list>  
                           
          <ref bean="cronTriggerForPLCRead"/>  
                           
          <ref bean="cronTrigger"/>  
                        
          </list>  
                   
          </property>  
             
                   
          <property name="configLocation" value="classpath:quartz.properties"/>  
              
          </bean> 


          Caused by: org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'schedulerFactoryBean': FactoryBean which is currently in creation returned null from getObject

          如果寫了攔截器的化 還會報這個錯 :

          Error creating bean with name 'test2': Bean with name 'test2' has been injected into other beans [schedulerJobDetailForPLCRead] in its raw version as part of a circular reference, but has eventually been wrapped (for example as part of auto-proxy creation). This means that said other beans do not use the final version of the bean. This is often the result of over-eager type matching - consider using 'getBeanNamesOfType' with the 'allowEagerInit' flag turned off, for example.


          對于2:
          MethodInvokingJobDetailFactoryBean 不能持久化
          必須用JobDetailBean 需繼承QuartzJobBean  不夠pojo
          使用MethodInvokingJobDetailFactoryBean的化會報:
          org.quartz.JobPersistenceException: Couldn't store job: Unable to serialize JobDataMap for insertion into database because the value of property 'methodInvoker' is not serializable: org.springframework.scheduling.quartz.MethodInvoki ngJobDetailFactoryBean [See nested exception: java.io.NotSerializableException: Unable to serialize JobDataMap for insertion into database because the value of property
          API上說了
          There's a note in the JavaDoc, I'd presume this might be your problem.
          JobDetails created via this FactoryBean are not serializable and thus not suitable for persistent job stores. You need to implement your own Quartz Job as a thin wrapper for each case where you want a persistent job to delegate to a specific service method.
          http://www.springframework.org/docs/api/org/springframework/scheduling/quartz/MethodInvokingJobDetailFactoryBean.html
          用MethodInvokingJobDetailFactoryBean不可持久化 除非加個thin wrapper
          但查不到任何資料
          但愿spring后續版本有好的方案 現在還是老老實實的用JobDetailBean吧

          另:
          不可用于web action action 用了session等作用域...
          Caused by: java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request? If you are actually operating within a web request and still receive this message,your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.
          posted on 2009-03-19 22:19 Kim' 閱讀(4260) 評論(0)  編輯  收藏

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