Multiple file upload with Spring 3 and Hibernate 4 - spring

Question

I am new to Spring MVC and Hibernate and am learning along the way.
I encountered this problem when I was trying to upload images onto the site and store it in MySQL database.
I have a project model, which consists of a list of photo model. In each photo model, there is a field (CommonsMultipartFile) called photo that actually stores the photo.
ProjectModel.java
public class ProjectModel{
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private int id;
#OneToMany(fetch = FetchType.LAZY, cascade=CascadeType.ALL)
private List<PhotoModel> photos;
//getters and setters
}
PhotoModel.java
public class PhotoModel extends AbstractModel implements Serializable{
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private int id;
#Column(columnDefinition = "LONGBLOB")
private CommonsMultipartFile photo;
#ManyToOne(fetch = FetchType.LAZY)
private ProjectModel project;
//getters and setters
}
addProject.jsp
<form:input type="file" path="photos[0].photo"/>
<form:input type="file" path="photos[1].photo"/>
ProjectController.java
#RequestMapping(value="/project/add", method = {RequestMethod.GET})
public String toAddProject (Model model){
if (!model.containsAttribute(Constants.COMMAND)){
ProjectModel project = new ProjectModel();
project.setPhotos(new AutoPopulatingList<PhotoModel>(PhotoModel.class));
model.addAttribute(Constants.COMMAND, project);
}
return "/user/addProject";
}
#RequestMapping(value="/project/add", method = {RequestMethod.POST})
public String addProject Model model, #ModelAttribute("command") #Valid ProjectModel command, BindingResult result){
if(result.hasErrors()) {
model.addAttribute(Constants.COMMAND, command);
return toAddProject(model);
}
projectService.save(command);
return "redirect:/success";
}
My problem is that I am able to upload images of certain types, such as jpg or jpeg, but not png. If I try to upload such file, the error is as follows.
org.springframework.orm.hibernate4.HibernateSystemException: could not deserialize; nested exception is org.hibernate.type.SerializationException: could not deserialize
at org.springframework.orm.hibernate4.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:206)
at org.springframework.orm.hibernate4.HibernateTransactionManager.convertHibernateAccessException(HibernateTransactionManager.java:606)
at org.springframework.orm.hibernate4.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:488)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:754)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:393)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:120)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy32.save(Unknown Source)
at cn.javass.demo.web.controller.ProjectController.addProject(ProjectController.java:64)
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:597)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at cn.javass.common.web.filter.BackURLFilter.doFilter(BackURLFilter.java:37)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:680)
Caused by: org.hibernate.type.SerializationException: could not deserialize
at org.hibernate.internal.util.SerializationHelper.doDeserialize(SerializationHelper.java:250)
at org.hibernate.internal.util.SerializationHelper.deserialize(SerializationHelper.java:306)
at org.hibernate.internal.util.SerializationHelper.clone(SerializationHelper.java:95)
at org.hibernate.type.descriptor.java.SerializableTypeDescriptor$SerializableMutabilityPlan.deepCopyNotNull(SerializableTypeDescriptor.java:55)
at org.hibernate.type.descriptor.java.SerializableTypeDescriptor$SerializableMutabilityPlan.deepCopyNotNull(SerializableTypeDescriptor.java:42)
at org.hibernate.type.descriptor.java.MutableMutabilityPlan.deepCopy(MutableMutabilityPlan.java:57)
at org.hibernate.type.AbstractStandardBasicType.deepCopy(AbstractStandardBasicType.java:340)
at org.hibernate.type.AbstractStandardBasicType.deepCopy(AbstractStandardBasicType.java:336)
at org.hibernate.type.TypeHelper.deepCopy(TypeHelper.java:67)
at org.hibernate.action.internal.EntityUpdateAction.execute(EntityUpdateAction.java:135)
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:362)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:354)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:276)
at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:326)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:52)
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1127)
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:325)
at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101)
at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:175)
at org.springframework.orm.hibernate4.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:480)
... 53 more
Caused by: java.io.FileNotFoundException: /Users/Paddy/Documents/apache-tomcat-7.0.25/work/Catalina/localhost/Spring3Hibernate4Chinese/upload_1bc5d431_136acd506da__8000_00000013.tmp (No such file or directory)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:120)
at org.apache.commons.fileupload.disk.DiskFileItem.readObject(DiskFileItem.java:709)
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:597)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:969)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1752)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1946)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1870)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1752)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)
at org.hibernate.internal.util.SerializationHelper.doDeserialize(SerializationHelper.java:244)
... 72 more
It seems that a temporary file cannot be found. I am not sure what is really happening behind the scenes by Spring or Hibernate.
Really hope someone could shed some lights on this issue?
Thanks.

Answer 1

After experimenting with this issue for a while, it seems that it does not depend on the type of file I submit but rather the size of the file. If it exceeds a threshold, the problem described occurs.
Since I am not able to tackle this issue, I tried to convert field type from CommonsMultipartFile to byte[] and add an initBinder method at my controller as suggested by this link.
It works.