在當前線程中交易未處於活動狀態

Question

我不斷收到錯誤消息交易在當前線程中處於非活動狀態，我無法想出解決此問題的方法。在我按下應該發佈將數據插入到數據庫的方法的按鈕之前，該錯誤會一直髮生在頁面加載上。 下面我進入我的代碼：

public String bookLesson(int lessonNo) throws Exception{ 
    try{ 
     Booking booking = new Booking(); 
     Lesson lesson = em.find(Lesson.class, lessonNo); 
     booking.setLessonno(lesson); 
     booking.setCustomername(customerName); 
     booking.setCustomerphone(customerPhone); 
     utx.begin(); 
     em.persist(booking); 
     utx.commit(); 
    } catch (Exception e){ 
     utx.rollback(); 
     System.out.println(e); 
    } 
    return "lesson"; 
} 

的方法正在從一個網頁叫做^ h：按鈕，這樣一旦用戶輸入自己的姓名和電話號碼，將被傳遞到數據庫有望文本框。此外，如果此信息有幫助，我正在使用glassfish服務器！ 這裏也是堆棧跟蹤的副本返回錯誤頁面上

java.lang.IllegalStateException: Transaction is not active in the current thread. 
at com.sun.enterprise.transaction.jts.JavaEETransactionManagerJTSDelegate.validateTransactionManager(JavaEETransactionManagerJTSDelegate.java:447) 
at com.sun.enterprise.transaction.jts.JavaEETransactionManagerJTSDelegate.rollbackDistributedTransaction(JavaEETransactionManagerJTSDelegate.java:208) 
at com.sun.enterprise.transaction.JavaEETransactionManagerSimplified.rollback(JavaEETransactionManagerSimplified.java:892) 
at com.sun.enterprise.transaction.UserTransactionImpl.rollback(UserTransactionImpl.java:238) 
at bean.bookingBean.bookLesson(bookingBean.java:146) 
at bean.bookingBean$Proxy$_$$_WeldClientProxy.bookLesson(Unknown Source) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
at java.lang.reflect.Method.invoke(Unknown Source) 
at javax.el.ELUtil.invokeMethod(ELUtil.java:326) 
at javax.el.BeanELResolver.invoke(BeanELResolver.java:536) 
at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:256) 
at com.sun.el.parser.AstValue.getValue(AstValue.java:136) 
at com.sun.el.parser.AstValue.getValue(AstValue.java:204) 
at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:226) 
at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50) 
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109) 
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194) 
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182) 
at javax.faces.component.UIOutcomeTarget.getOutcome(UIOutcomeTarget.java:164) 
at com.sun.faces.renderkit.html_basic.OutcomeTargetRenderer.getNavigationCase(OutcomeTargetRenderer.java:136) 
at com.sun.faces.renderkit.html_basic.OutcomeTargetButtonRenderer.encodeBegin(OutcomeTargetButtonRenderer.java:90) 
at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:869) 
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:302) 
at com.sun.faces.renderkit.html_basic.TableRenderer.renderRow(TableRenderer.java:385) 
at com.sun.faces.renderkit.html_basic.TableRenderer.encodeChildren(TableRenderer.java:162) 
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:894) 
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856) 
at javax.faces.render.Renderer.encodeChildren(Renderer.java:176) 
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:894) 
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856) 
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859) 
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859) 
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859) 
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:443) 
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131) 
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) 
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) 
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) 
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219) 
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647) 
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682) 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318) 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160) 
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734) 
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673) 
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99) 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174) 
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357) 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260) 
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188) 
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191) 
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168) 
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189) 
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) 
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288) 
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206) 
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136) 
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114) 
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) 
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838) 
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113) 
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115) 
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55) 
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135) 
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564) 
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544) 
at java.lang.Thread.run(Unknown Source) 

任何幫助，將不勝感激謝謝。

Answer 1

您應該在執行回滾之前檢查事務狀態，因爲它會觸發您的異常。
您可以使用TransactionManager界面中的public int getStatus() throws SystemException;方法。
你可以與關聯至javax.transaction.Status接口int值進行比較返回值：

public final static int STATUS_ACTIVE= 0; 

如果交易活躍，您執行rollaback。否則，你不執行它。調用set方法之前

catch (Exception e){ 
     e.printStackTrace(); 
     // logger.error(e); It is a better solution than logging in output. 
     if (utx.getTransaction().getStatus()==Status.STATUS_ACTIVE){ 
      utx.rollback(); 
     } 
    }