２００９-１１-２８
昨天發現了一個問題:我的項目:
sturts1.2 hibernate3 spring2.5
使用註解
問題描述:先調用查詢的方法,然後更新數據的時候報錯:
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)
我想這個問題很多人都遇到了
看看源程序:
web.xml中
-----------------------------------------------------------------------
<!-- 使用spring解決hibernate因session關閉導致的延遲加載例外問題。 -->
<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();
//這裏有查詢 調用了ｄａｏ類的方法
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);
//這裏有更新方法 調用了ｄａｏ的方法;
workLogService.updateWorklog(wl);
request.setAttribute("nowtime", time);
return mapping.findForward("addsus");
}
}
-------------------------------------------------
ｄａｏｉｍｐ中
-------------------------------------
//查詢方法
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("沒有日誌 ｗｏｒｋlogdaoimp -->findbyid方法");
}
}
//更新的方法 使用了註解;
@Transactional(readOnly=false,propagation=Propagation.REQUIRED)
public void updateWorkLog(Worklog wl) {
this.update(wl);
}
-------------------------------
報錯:分析原因:
參考;http://www.iteye.com/topic/32001
http://www.iteye.com/topic/33507
解決方法:
ｗｅｂ.ｘｍｌ中
<!-- 使用spring解決hibernate因session關閉導致的延遲加載例外問題。 -->
<filter>
<filter-name>OpenSessionInViewFilter</filter-name>
//自己寫了一個過濾器 繼承了ｏｐｅｎｓｅｓｓｉｏｎｉｎｖｉｅｗｆｉｌｔｅｒ覆蓋了他的方法;
<filter-class>filter.OpenSessionFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>OpenSessionInViewFilter</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>
過濾器中:
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) {
//將ｆｌｓｈｍｏｄｅ的方法改爲ａｕｔｏ
session.setFlushMode(flushMode.AUTO);
}
return session;
}
}
問題解決;
ｅｎｄ
