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我使用Wicket的1.5.x版本，彈簧3.2，並的Hibernate 3.6。我的應用程序成功地啓動並從數據庫讀取，但是當我嘗試實際加載頁面時，我得到了下面粘貼的異常。的NullPointerException在HibernateDaoSupport.getSession（）
爲什麼找不到會話？從我可以告訴它甚至沒有可怕的LazyLoadInitializationException，所以我甚至不知道從哪裏開始，我不確定它在頁面渲染過程中得到了足夠多的信息，以判斷OpenSessionInViewFilter是否會有所幫助。
@ContextConfiguration(locations = { "classpath:testApplicationContext.xml" })
@TransactionConfiguration(transactionManager = "txManager")
@RunWith(SpringJUnit4ClassRunner.class)
public abstract class AbstractWebPageTests implements ApplicationContextAware
我使用註釋線了我的測試類：
org.apache.wicket.WicketRuntimeException: Exception in rendering component: [TooltipContainer [Component id = firstNameTip]]
at org.apache.wicket.Component.internalRenderComponent(Component.java:2590)
at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1530)
at org.apache.wicket.Component.internalRender(Component.java:2393)
at org.apache.wicket.Component.render(Component.java:2321)
at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1428)
at org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1592)
at org.apache.wicket.MarkupContainer.renderComponentTagBody(MarkupContainer.java:1567)
at org.apache.wicket.MarkupContainer.onComponentTagBody(MarkupContainer.java:1521)
at org.apache.wicket.markup.html.form.Form.onComponentTagBody(Form.java:1656)
at org.apache.wicket.markup.html.panel.DefaultMarkupSourcingStrategy.onComponentTagBody(DefaultMarkupSourcingStrategy.java:72)
at org.apache.wicket.Component.internalRenderComponent(Component.java:2563)
at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1530)
at org.apache.wicket.Component.internalRender(Component.java:2393)
at org.apache.wicket.Component.render(Component.java:2321)
at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1428)
at org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1592)
at org.apache.wicket.MarkupContainer.renderComponentTagBody(MarkupContainer.java:1567)
at org.apache.wicket.MarkupContainer.onComponentTagBody(MarkupContainer.java:1521)
at org.apache.wicket.markup.html.panel.DefaultMarkupSourcingStrategy.onComponentTagBody(DefaultMarkupSourcingStrategy.java:72)
at org.apache.wicket.Component.internalRenderComponent(Component.java:2563)
at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1530)
at org.apache.wicket.Component.internalRender(Component.java:2393)
at org.apache.wicket.Component.render(Component.java:2321)
at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1428)
at org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1592)
at org.apache.wicket.MarkupContainer.renderComponentTagBody(MarkupContainer.java:1567)
at org.apache.wicket.MarkupContainer.onComponentTagBody(MarkupContainer.java:1521)
at org.apache.wicket.markup.html.panel.DefaultMarkupSourcingStrategy.onComponentTagBody(DefaultMarkupSourcingStrategy.java:72)
at org.apache.wicket.Component.internalRenderComponent(Component.java:2563)
at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1530)
at org.apache.wicket.Component.internalRender(Component.java:2393)
at org.apache.wicket.Component.render(Component.java:2321)
at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1428)
at org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1592)
at org.apache.wicket.MarkupContainer.renderComponentTagBody(MarkupContainer.java:1567)
at org.apache.wicket.MarkupContainer.onComponentTagBody(MarkupContainer.java:1521)
at org.apache.wicket.markup.html.panel.DefaultMarkupSourcingStrategy.onComponentTagBody(DefaultMarkupSourcingStrategy.java:72)
at org.apache.wicket.Component.internalRenderComponent(Component.java:2563)
at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1530)
at org.apache.wicket.Component.internalRender(Component.java:2393)
at org.apache.wicket.Component.render(Component.java:2321)
at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1428)
at org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1592)
at org.apache.wicket.MarkupContainer.renderComponentTagBody(MarkupContainer.java:1567)
at org.apache.wicket.MarkupContainer.onComponentTagBody(MarkupContainer.java:1521)
at org.apache.wicket.markup.html.panel.DefaultMarkupSourcingStrategy.onComponentTagBody(DefaultMarkupSourcingStrategy.java:72)
at org.apache.wicket.Component.internalRenderComponent(Component.java:2563)
at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1530)
at org.apache.wicket.Component.internalRender(Component.java:2393)
at org.apache.wicket.Component.render(Component.java:2321)
at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1428)
at org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1592)
at org.apache.wicket.Page.onRender(Page.java:907)
at org.apache.wicket.markup.html.WebPage.onRender(WebPage.java:140)
at org.apache.wicket.Component.internalRender(Component.java:2393)
at org.apache.wicket.Component.render(Component.java:2321)
at org.apache.wicket.Page.renderPage(Page.java:1035)
at org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:118)
at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:246)
at org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:167)
at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:784)
at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:255)
at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:212)
at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:283)
at org.apache.wicket.util.tester.BaseWicketTester.processRequest(BaseWicketTester.java:696)
at org.apache.wicket.util.tester.BaseWicketTester.processRequest(BaseWicketTester.java:624)
at org.apache.wicket.util.tester.BaseWicketTester.processRequest(BaseWicketTester.java:596)
at org.apache.wicket.util.tester.BaseWicketTester.startPage(BaseWicketTester.java:1257)
at org.apache.wicket.util.tester.BaseWicketTester.startPage(BaseWicketTester.java:1230)
at us.ak.state.revenue.cssd.Personnel.Pages.MaintenanceForms.Employee.TestChangeRequestMaintenance.__CLR3_1_11lo23k3ciu(TestChangeRequestMaintenance.java:52)
at us.ak.state.revenue.cssd.Personnel.Pages.MaintenanceForms.Employee.TestChangeRequestMaintenance.testLoadPageLoggedIn_DO(TestChangeRequestMaintenance.java:49)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:88)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:77)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:195)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:63)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: java.lang.RuntimeException: An error occurred while getting the model object for Component: [TextField [Component id = firstName, page = us.ak.state.revenue.cssd.Personnel.Pages.MaintenanceForms.Employee.ChangeRequestMaint, path = 0:emp_info_maint:firstNameTip:firstName.TextField, isVisible = true, isVersioned = false, markup = [markup = file:/C:/Users/tfburton/Documents/JavaProjects/SVN/Personnel/trunk/target/classes/us/ak/state/revenue/cssd/Personnel/Pages/MaintenanceForms/Employee/ChangeRequestMaint.html
<input wicket:id="firstName" type="text" class="noChange"/>, index = 0, current = '<input wicket:id="firstName" type="text" class="noChange"/>' (line 0, column 0)]]]
at org.apache.wicket.Component.getDefaultModelObject(Component.java:1679)
at org.apache.wicket.Component.getDefaultModelObjectAsString(Component.java:1701)
at org.apache.wicket.markup.html.form.FormComponent.getModelValue(FormComponent.java:1211)
at org.apache.wicket.markup.html.form.FormComponent.getValue(FormComponent.java:837)
at org.apache.wicket.markup.html.form.TextField.onComponentTag(TextField.java:108)
at org.apache.wicket.Component.internalRenderComponent(Component.java:2534)
at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1530)
at org.apache.wicket.Component.internalRender(Component.java:2393)
at org.apache.wicket.Component.render(Component.java:2321)
at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1428)
at org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1592)
at org.apache.wicket.MarkupContainer.renderComponentTagBody(MarkupContainer.java:1567)
at org.apache.wicket.MarkupContainer.onComponentTagBody(MarkupContainer.java:1521)
at org.apache.wicket.markup.html.panel.DefaultMarkupSourcingStrategy.onComponentTagBody(DefaultMarkupSourcingStrategy.java:72)
at org.apache.wicket.Component.internalRenderComponent(Component.java:2563)
... 104 more
Caused by: org.apache.wicket.WicketRuntimeException: Error calling method: public java.lang.String us.ak.state.revenue.cssd.Personnel.dao.Employee.Employee.getFirstName() on object: null
at org.apache.wicket.util.lang.PropertyResolver$MethodGetAndSet.getValue(PropertyResolver.java:1127)
at org.apache.wicket.util.lang.PropertyResolver$ObjectAndGetSetter.getValue(PropertyResolver.java:648)
at org.apache.wicket.util.lang.PropertyResolver.getValue(PropertyResolver.java:102)
at org.apache.wicket.model.AbstractPropertyModel.getObject(AbstractPropertyModel.java:134)
at org.apache.wicket.Component.getDefaultModelObject(Component.java:1674)
... 118 more
Caused by: java.lang.NullPointerException
at org.springframework.orm.hibernate3.support.HibernateDaoSupport.getSession(HibernateDaoSupport.java:143)
at us.ak.state.revenue.cssd.Personnel.dao.NameTableHome.findByPcn(NameTableHome.java:555)
at WICKET_us.ak.state.revenue.cssd.Personnel.dao.NameTableHome$$FastClassByCGLIB$$bd58bb2e.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)
at org.apache.wicket.proxy.LazyInitProxyFactory$CGLibInterceptor.intercept(LazyInitProxyFactory.java:333)
at WICKET_us.ak.state.revenue.cssd.Personnel.dao.NameTableHome$$EnhancerByCGLIB$$e12a569d.findByPcn(<generated>)
at us.ak.state.revenue.cssd.Personnel.dao.PcnTable.getNameTable(PcnTable.java:198)
at us.ak.state.revenue.cssd.Personnel.dao.Employee.Employee.getNameTable(Employee.java:697)
at us.ak.state.revenue.cssd.Personnel.dao.Employee.Employee.getFirstName(Employee.java:67)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at org.apache.wicket.util.lang.PropertyResolver$MethodGetAndSet.getValue(PropertyResolver
UPDATE
我的測試類繼承以下的類。但我試圖堅持儘可能地使用XML來連接我的實際Web應用程序，該應用程序在我的測試開始時通過new WicketTester(new MockLoggedInApplication(user));加載。 MockLoggedInApplication extends QuickstartApplication並且我的應用程序在QuickStartApplication.init()內部執行了很多數據庫讀取操作。
我應該粘貼我的applicationContext.xml嗎？
注：
我想我已經縮小的問題。
如果你在底部Caused By:
Caused by: java.lang.NullPointerException
at org.springframework.orm.hibernate3.support.HibernateDaoSupport.getSession(HibernateDaoSupport.java:143)
at us.ak.state.revenue.cssd.Personnel.dao.NameTableHome.findByPcn(NameTableHome.java:555)
at WICKET_us.ak.state.revenue.cssd.Personnel.dao.NameTableHome$$FastClassByCGLIB$$bd58bb2e.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:191)
at org.apache.wicket.proxy.LazyInitProxyFactory$CGLibInterceptor.intercept(LazyInitProxyFactory.java:333)
at WICKET_us.ak.state.revenue.cssd.Personnel.dao.NameTableHome$$EnhancerByCGLIB$$e12a569d.findByPcn(<generated>)
at us.ak.state.revenue.cssd.Personnel.dao.PcnTable.getNameTable(PcnTable.java:198)
at us.ak.state.revenue.cssd.Personnel.dao.Employee.Employee.getNameTable(Employee.java:697)
at us.ak.state.revenue.cssd.Personnel.dao.Employee.Employee.getFirstName(Employee.java:67)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at org.apache.wicket.util.lang.PropertyResolver$MethodGetAndSet.getValue(PropertyResolver
仔細一看吾道我的檢票代理WICKET_us.ak.state.revenue.cssd.Personnel.dao.NameTableHome$$FastClassByCGLIB$$bd58bb2e.invoke(<generated>)處理。然而，儘管wicket對我來說代理它永遠不會被Spring事務管理抓住。
我的交易管理配置：
<bean id="sessionFactory"
class="us.ak.state.revenue.cssd.Personnel.utils.SessionFactoryBean" >
<property name="configLocation" value="classpath:hibernate.cfg.xml">
</property>
</bean>
<bean id="txManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
</bean>
<tx:advice id="txAdvice" transaction-manager="txManager">
<tx:attributes>
<tx:method name="find*" propagation="REQUIRED"/>
<!-- others omitted for brevity -->
</tx:attributes>
</tx:advice>
<aop:config proxy-target-class="true" >
<aop:advisor advice-ref="txAdvice"
pointcut="execution(* *..BaseHibernateDAO+.find*(..))" />
<!-- omitted for brevity -->
</aop:config>
<bean id="NameTableHome"
class="us.ak.state.revenue.cssd.Personnel.dao.NameTableHome" >
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<!-- other dao beans omitted for brevity -->
NameTableHome聲明與此類似：
public class NameTableHome extends BaseHibernateDAO
如今，不推薦使用'HibernateDaoSupport'。 http://stackoverflow.com/a/5104965/870248 –
此代碼最初使用** Spring-2.5.x **我已升級到** 3.2 **感謝我將考慮轉換我的基類一旦我得到我的應用程序再次工作。 – Raystorm
它看起來像NPE發生在會議時。我會查看配置以查看SessionFactory是否未被創建或設置。但我認爲它會失敗，除非你使用Annotations來將東西連接在一起，並且無論出於何種原因，將SessionFactory連接到HibernateDAOSupport的東西將它設置爲required = false。 – CodeChimp