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私はSpringMVCとHibernateを初めて使用し、その過程で学習しています。

この問題は、画像をサイトにアップロードしてMySQLデータベースに保存しようとしたときに発生しました。

写真モデルのリストで構成されるプロジェクトモデルがあります。各写真モデルには、実際に写真を保存するphotoというフィールド（CommonsMultipartFile）があります。

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";
}

私の問題は、jpgやjpegなどの特定のタイプの画像をアップロードできるが、pngはアップロードできないことです。このようなファイルをアップロードしようとすると、エラーは次のようになります。

    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

一時ファイルが見つからないようです。SpringやHibernateの舞台裏で実際に何が起こっているのかわかりません。

誰かがこの問題に光を当てることができることを本当に望んでいますか？

ありがとう。

4

1 に答える 1

0

この問題をしばらく試したところ、提出するファイルの種類ではなく、ファイルのサイズに依存しているようです。しきい値を超えると、説明されている問題が発生します。

この問題に取り組むことができないので、このリンクCommonsMultipartFileで提案されているように、フィールドタイプをからに変換byte[]し、コントローラーにinitBinderメソッドを追加しようとしました。

できます。

于 2012-04-15T16:16:34.890 に答える