Hello,
I'm having a problem with my Hibernate/Spring application, getting the following error while trying to display a Hibernate persisted pojo:
Code:
ERROR: Invalid property 'id' of bean class [ro.crispico.gioppi.model.Driver]: Getter for property 'id' threw exception; nested exception is java.lang.reflect.InvocationTargetException: null
org.springframework.beans.InvalidPropertyException: Invalid property 'id' of bean class [ro.crispico.gioppi.model.Driver]: Getter for property 'id' threw exception; nested exception is java.lang.reflect.InvocationTargetException: null
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.springframework.beans.BeanWrapperImpl.getPropertyValue(BeanWrapperImpl.java:657)
at org.springframework.beans.BeanWrapperImpl.getPropertyValue(BeanWrapperImpl.java:643)
at org.springframework.validation.BindException.getFieldValue(BindException.java:333)
at org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:117)
at org.springframework.web.servlet.tags.BindTag.doStartTagInternal(BindTag.java:115)
at org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:68)
at org.apache.jsp.views.driverForm_jsp._jspService(org.apache.jsp.views.driverForm_jsp:186)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at ro.crispico.gioppi.web.MessageFilter.doFilter(MessageFilter.java:36)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:97)
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:928)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:705)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:625)
at org.springframework.web.servlet.FrameworkServlet.serviceWrapper(FrameworkServlet.java:386)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:346)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at ro.crispico.gioppi.web.MessageFilter.doFilter(MessageFilter.java:36)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.ClassCastException: java.lang.String
at ro.crispico.gioppi.model.Driver.getId(Driver.java:29)
at ro.crispico.gioppi.model.Driver.getId(Driver.java:1)
... 52 more
I think the problem consits in the fact that I use generics, like this:
Code:
public abstract class Entity<ID extends Serializable> {
private ID id;
public ID getId( ) {
return id;
}
public void setId( ID id ) {
this.id = id;
}
...
and my Driver class:
Code:
/**
* @author Cristi
* @hibernate.class lazy="false"
*/
public class Driver extends Entity<Long> {
...
/**
* @hibernate.id generator-class="native" type="java.lang.Long" unsaved-value="0"
*/
public Long getId( ) {
return super.getId();
}
If I change the generic ID type into Long (Entity class), the error doesn't appear any more.
Thank you,
Cristian.
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