Write operations are not allowed in read-only mode (FlushMode.NEVER/MANUAL)

２００９-１１-２８

昨天发现了一个问题:我的项目:

sturts1.2 hibernate3 spring2.5

使用注解　

问题描述:先调用查询的方法,然后更新数据的时候报错:

org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode (FlushMode.NEVER/MANUAL): Turn your Session into FlushMode.COMMIT/AUTO or remove 'readOnly' marker from transaction definition.
	org.springframework.orm.hibernate3.HibernateTemplate.checkWriteOperationAllowed(HibernateTemplate.java:1186)
	org.springframework.orm.hibernate3.HibernateTemplate$14.doInHibernate(HibernateTemplate.java:718)
	org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:419)
	org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
	org.springframework.orm.hibernate3.HibernateTemplate.update(HibernateTemplate.java:716)
	org.springframework.orm.hibernate3.HibernateTemplate.update(HibernateTemplate.java:712)
	dao.base.GenericDaoImpl.update(GenericDaoImpl.java:30)
	dao.Imp.WorkLogDaoImp.updateWorkLog(WorkLogDaoImp.java:44)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	java.lang.reflect.Method.invoke(Unknown Source)
	org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
	org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
	org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	$Proxy6.updateWorkLog(Unknown Source)
	service.Imp.WorkLogServiceImp.updateWorklog(WorkLogServiceImp.java:37)
	struts.action.DayWorklog.updateWorkLog(DayWorklog.java:175)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	java.lang.reflect.Method.invoke(Unknown Source)
	org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:270)
	org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187)
	org.springframework.web.struts.DelegatingActionProxy.execute(DelegatingActionProxy.java:110)
	org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
	org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
	org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

我想这个问题很多人都遇到了

看看源程序:

web.xml中

-----------------------------------------------------------------------

<!-- 使用spring解决hibernate因session关闭导致的延迟加载例外问题。 -->
  <filter>
     <filter-name>OpenSessionInViewFilter</filter-name>
     <filter-class>filter.OpenSessionFilter</filter-class>
  </filter>
  <filter-mapping>
     <filter-name>OpenSessionInViewFilter</filter-name>
     <url-pattern>*.do</url-pattern>
  </filter-mapping>

-----------------------------------------------------------------------

action 中

------------------------------------------

public ActionForward updateWorkLog(ActionMapping mapping, ActionForm form, HttpServletRequest request,
   HttpServletResponse response) throws Exception {
  PoolForm poolform = (PoolForm)form;
  String time = poolform.getTime();
  String fun = poolform.getFunction();
  Integer id = poolform.getId();

//这里有查询　调用了ｄａｏ类的方法
  Worklog wl = workLogService.findByid(id);
  if(fun.equals("turn"))
  {
   
   request.setAttribute("log", wl);
   request.setAttribute("nowtime", time);
   return mapping.findForward("update");
  }else
  {
   String begin = poolform.getBegin();
   String end  = poolform.getEnd();
   String content = poolform.getWorkcontent();
   String object = poolform.getObject();
   String scjd = request.getParameter("scjd"+id);
   
   wl.setBegin(begin);
   wl.setEnd(end);
   wl.setObject(object);
   wl.setScjd(Integer.parseInt(scjd));
   wl.setWorkcontent(content);
   wl.setDay(time);
  //这里有更新方法　调用了ｄａｏ的方法;
   workLogService.updateWorklog(wl);
   request.setAttribute("nowtime", time);
   return mapping.findForward("addsus");
  }
  
 }

-------------------------------------------------

ｄａｏｉｍｐ中

-------------------------------------

//查询方法

public Worklog findbyid(int id) {
  this.getHibernateTemplate().setCacheQueries(true);
  Object object = this.getObjectByCondition(" u.id="+id);
  if(object !=null)
  {
   Worklog log = (Worklog)object;
   return log;
  }else
  {
   throw new IllegalArgumentException("没有日志　ｗｏｒｋlogdaoimp -->findbyid方法");   
  }
  
 }

//更新的方法　使用了注解;
 @Transactional(readOnly=false,propagation=Propagation.REQUIRED)
 public void updateWorkLog(Worklog wl) {
  this.update(wl);
  
 }

-------------------------------

报错:分析原因:

参考;http://www.iteye.com/topic/32001

http://www.iteye.com/topic/33507

解决方法:

ｗｅｂ.ｘｍｌ中

  <!-- 使用spring解决hibernate因session关闭导致的延迟加载例外问题。 -->

  <filter>

     <filter-name>OpenSessionInViewFilter</filter-name>

//自己写了一个过滤器　继承了ｏｐｅｎｓｅｓｓｉｏｎｉｎｖｉｅｗｆｉｌｔｅｒ覆盖了他的方法;

     <filter-class>filter.OpenSessionFilter</filter-class>

  </filter>

  <filter-mapping>

     <filter-name>OpenSessionInViewFilter</filter-name>

     <url-pattern>*.do</url-pattern>

  </filter-mapping>

 

过滤器中:

package filter;

 

import org.hibernate.FlushMode;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.springframework.dao.DataAccessResourceFailureException;

import org.springframework.orm.hibernate3.SessionFactoryUtils;

import org.springframework.orm.hibernate3.support.OpenSessionInViewFilter;

 

public class OpenSessionFilter extends OpenSessionInViewFilter{

       protected Session getSession(SessionFactory sessionFactory) throws DataAccessResourceFailureException {

              Session session = SessionFactoryUtils.getSession(sessionFactory, true);

              FlushMode flushMode = getFlushMode();

              if (flushMode != null) {

//将ｆｌｓｈｍｏｄｅ的方法改为ａｕｔｏ

                     session.setFlushMode(flushMode.AUTO);

              }

              return session;

       }

      

}

问题解决;

ｅｎｄ