Hello.
I have created a new small project to try to figure out how to use the
SpringBean, Service, and Repository annotations with Wicket, Spring,
Hibernate, Maven and Eclipse.
However, I am getting an error with a user DAO that I have created.
I have a service that is using the dao tagged as @Service, I have the
DAO in the service tagged with @SpringBean, and the DAO code itself is
tagged with @Repository. The service that is using the DAO is getting
found correctly.
When I have the InjectorHolder code in the dao constructor, I get an
error that says 'InjectorHolder has not been assigned an injector'
When I comment out the InjectorHolder line in the dao constructor, the
DAO is null, and getUserDAO throws an exception.
Since I am not certain that I can attach files, I will insert the
relevant code and exceptions into this email.
Any pointers you can give would be greatly appreciated.
Thanks very very much,
Bruce.
UserServiceImpl
=========================
@Service("UserService")
public class UserServiceImpl implements UserService
{
@SpringBean
UserDAO userDAO ;
private UserDAO getUserDAO()
{
if (null == userDAO)
{
throw new RuntimeException("userDAO is null") ;
}
return(userDAO) ;
}
@Override
public List<User> getUsers()
{
return (getUserDAO().findAll());
}
=========================
UserDAOHibernate
=========================
@Repository("UserDAO")
public class UserDAOHibernate extends GenericDAOHibernate<User, String>
implements UserDAO
{
private static Log log = LogFactory.getLog("UserDAOHibernate");
public UserDAOHibernate()
{
InjectorHolder.getInjector().inject(this);
}
...
=========================
HomePage
=========================
public class HomePage extends WebPage
{
@SpringBean
private UserService userService ;
public HomePage(final PageParameters parameters)
{
super (parameters) ;
List<User> userList = userService.getUsers() ;
RepeatingView rv = new RepeatingView("Users") ;
for(User user: userList)
{
Label userName = new Label("username", user.getUsername()) ;
rv.add(userName) ;
}
this.add(rv) ;
}
}
=========================
CoastwareApplication
=========================
public class CoastwareApplication extends WebApplication
{
private ApplicationContext ctx;
@SpringBean
private UserService userService ;
protected static Log log =
LogFactory.getLog(CoastwareApplication.class) ;
private static ISpringContextLocator CTX_LOCATOR = new
ISpringContextLocator()
{
public ApplicationContext getSpringContext()
{
return(CoastwareApplication.get().ctx) ;
}
} ;
public CoastwareApplication()
{
}
public void init()
{
ctx = new ClassPathXmlApplicationContext("appContext.xml") ;
addComponentInstantiationListener(new
SpringComponentInjector(this));
super.init() ;
}
@Override
public Session newSession(Request request, Response response)
{
return (new WebSession(request)) ;
}
public static CoastwareApplication get()
{
return ((CoastwareApplication) Application.get()) ;
}
private <T> T createProxy(Class<T> clazz)
{
return ((T) LazyInitProxyFactory.createProxy(clazz, new
SpringBeanLocator(clazz, CTX_LOCATOR))) ;
}
public Class<HomePage> getHomePage()
{
return HomePage.class;
}
public UserService getUserService()
{
if (null == userService)
{
userService = createProxy(UserService.class) ;
}
return userService;
}
}
=========================
Web.xml
=========================
<display-name>vProbe</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:appContext.xml</param-value>
</context-param>
<context-param>
<param-name>configuration</param-name>
<param-value>development</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<filter>
<filter-name>wicketFilter</filter-name>
<filter-class>org.apache.wicket.protocol.http.WicketFilter</filter-class>
<init-param>
<param-name>applicationClassName</param-name>
<param-value>com.coastware.vProbe.CoastwareApplication</param-value>
</init-param>
</filter>
<filter>
<filter-name>opensessioninview</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>wicketFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>opensessioninview</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
=========================
appContext.xml
=========================
<?xml version="1.0" encoding="UTF-8"?>
<beans
default-autowire="autodetect"
xmlns="http://www.springframework.org/schema/beans";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns:aop="http://www.springframework.org/schema/aop";
xmlns:tx="http://www.springframework.org/schema/tx";
xmlns:context="http://www.springframework.org/schema/context";
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd";>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="url" value="jdbc:mysql://192.168.15.128/vprobe"/>
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="username" value="vProbe"/>
<property name="password" value="vProbe"/>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="packagesToScan">
<list>
<value>com.coastware.vProbe.model</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop
key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.use_sql_comments">true</prop>
</props>
</property>
</bean>
<context:component-scan base-package="com.coastware" />
<bean id="openSessionInViewInterceptor"
class="org.springframework.orm.hibernate3.support.OpenSessionInViewInterceptor">
<property name="sessionFactory">
<ref bean="sessionFactory"/>
</property>
</bean>
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref bean="sessionFactory"/>
</property>
</bean>
<bean id="hibernateTemplate"
class="org.springframework.orm.hibernate3.HibernateTemplate">
<property name="sessionFactory">
<ref bean="sessionFactory"/>
</property>
</bean>
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean
class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator"/>
<bean
class="org.springframework.transaction.interceptor.TransactionAttributeSourceAdvisor">
<property name="transactionInterceptor" ref="txInterceptor"/>
</bean>
<bean id="txInterceptor"
class="org.springframework.transaction.interceptor.TransactionInterceptor">
<property name="transactionManager" ref="transactionManager"/>
<property name="transactionAttributeSource">
<bean
class="org.springframework.transaction.annotation.AnnotationTransactionAttributeSource"/>
</property>
</bean>
</beans>
=========================
Error with InjectorHolder line
=========================
SEVERE: Exception sending context initialized event to listener instance
of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating
bean with name 'UserDAO' defined in file [C:\Program Files\Apache
Software Foundation\Tomcat
6.0\webapps\vProbe\WEB-INF\classes\com\coastware\vProbe\model\dao\hibernate\UserDAOHibernate.class]:
Instantiation of bean failed; nested exception is
org.springframework.beans.BeanInstantiationException: Could not
instantiate bean class
[com.coastware.vProbe.model.dao.hibernate.UserDAOHibernate]: Constructor
threw exception; nested exception is java.lang.IllegalStateException:
InjectorHolder has not been assigned an injector. Use
InjectorHolder.setInjector() to assign an injector. In most cases this
should be done once inside SpringWebApplication subclass's init() method.
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:883)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:839)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:440)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
at
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)
at
org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728)
at
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:380)
at
org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
at
org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
at
org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
at
org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3843)
at
org.apache.catalina.core.StandardContext.start(StandardContext.java:4342)
at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:830)
at
org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:719)
at
org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:490)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)
at
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at
org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at
org.apache.catalina.core.StandardService.start(StandardService.java:516)
at
org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
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 org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Caused by: org.springframework.beans.BeanInstantiationException: Could
not instantiate bean class
[com.coastware.vProbe.model.dao.hibernate.UserDAOHibernate]: Constructor
threw exception; nested exception is java.lang.IllegalStateException:
InjectorHolder has not been assigned an injector. Use
InjectorHolder.setInjector() to assign an injector. In most cases this
should be done once inside SpringWebApplication subclass's init() method.
at
org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:115)
at
org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:61)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:877)
... 40 more
Caused by: java.lang.IllegalStateException: InjectorHolder has not been
assigned an injector. Use InjectorHolder.setInjector() to assign an
injector. In most cases this should be done once inside
SpringWebApplication subclass's init() method.
at
org.apache.wicket.injection.web.InjectorHolder.getInjector(InjectorHolder.java:64)
at
com.coastware.vProbe.model.dao.hibernate.UserDAOHibernate.<init>(UserDAOHibernate.java:26)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown
Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at
org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:100)
... 42 more
=========================
Error when InjectorHolder line is commented out.
=========================
java.lang.RuntimeException: userDAO is null at
com.coastware.vProbe.service.UserServiceImpl.getUserDAO(UserServiceImpl.java:90)
at
com.coastware.vProbe.service.UserServiceImpl.getUsers(UserServiceImpl.java:68)
at java.lang.reflect.Method.invoke(Unknown Source) at
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:198)
at $Proxy15.getUsers(Unknown Source) at
java.lang.reflect.Method.invoke(Unknown Source) at
org.apache.wicket.proxy.LazyInitProxyFactory$JdkHandler.invoke(LazyInitProxyFactory.java:416)
at org.apache.wicket.proxy.$Proxy16.getUsers(Unknown Source) at
com.coastware.vProbe.HomePage.<init>(HomePage.java:27) at
java.lang.reflect.Constructor.newInstance(Unknown Source) at
org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:147)
at
org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:66)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.newPage(BookmarkablePageRequestTarget.java:272)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.getPage(BookmarkablePageRequestTarget.java:293)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.processEvents(BookmarkablePageRequestTarget.java:210)
at
org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:91)
at
org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1220)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1297) at
org.apache.wicket.RequestCycle.steps(RequestCycle.java:1399) at
org.apache.wicket.RequestCycle.request(RequestCycle.java:529) at
org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:356)
at
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:201)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at
org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:857)
at
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:565)
at
org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1509)
at java.lang.Thread.run(Unknown Source)
Complete stack:
org.apache.wicket.WicketRuntimeException: Can't instantiate page using
constructor public
com.coastware.vProbe.HomePage(org.apache.wicket.PageParameters) and
argument at
org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:168)
at
org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:66)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.newPage(BookmarkablePageRequestTarget.java:272)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.getPage(BookmarkablePageRequestTarget.java:293)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.processEvents(BookmarkablePageRequestTarget.java:210)
at
org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:91)
at
org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1220)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1297) at
org.apache.wicket.RequestCycle.steps(RequestCycle.java:1399) at
org.apache.wicket.RequestCycle.request(RequestCycle.java:529) at
org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:356)
java.lang.reflect.InvocationTargetException at
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at
sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at
java.lang.reflect.Constructor.newInstance(Unknown Source) at
org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:147)
at
org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:66)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.newPage(BookmarkablePageRequestTarget.java:272)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.getPage(BookmarkablePageRequestTarget.java:293)
at
org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.processEvents(BookmarkablePageRequestTarget.java:210)
at
org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:91)
at
org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1220)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1297) at
org.apache.wicket.RequestCycle.steps(RequestCycle.java:1399) at
org.apache.wicket.RequestCycle.request(RequestCycle.java:529) at
org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:356)
=========================
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