java - 在 hibernate 4、spring、mysql 中使用 blob 时出错

Question

我正在研究 this tutorial , 但必须升级到 hibernate 4 作为许多更改的一部分，以使其与更现代的工具一起工作。

有人可以告诉我如何修复在 hibernate 4 和 spring 中尝试对 MySQL 数据库进行 blob 操作时抛出的错误吗？

目前，以下代码行正在触发错误:

session.save(document); //line 23

这是代码行所在的方法:

@Transactional
public void save(Document document) {
   Session session = sessionFactory.getCurrentSession();
   session.save(document); //line 23
}

这是包含该方法的类:

@Repository
public class DocumentDAO {

    @Autowired
    private SessionFactory sessionFactory;

    @Transactional
    public void save(Document document) {
        Session session = sessionFactory.getCurrentSession();
        session.save(document); //line 23
    }

    @Transactional
    public List<Document> list() {
       Session session = sessionFactory.getCurrentSession();
       List<Document> documents = null;
       try {documents = (List<Document>)session.createQuery("from Document").list();} 
       catch (HibernateException e) {e.printStackTrace();}
       return documents;
    }

    @Transactional
    public Document get(Integer id) {
       Session session = sessionFactory.getCurrentSession();
       return (Document)session.get(Document.class, id);
    }

   @Transactional
   public void remove(Integer id) {
       Session session = sessionFactory.getCurrentSession();
       Document document = (Document)session.get(Document.class, id);
       session.delete(document);
   }
}

这是抛出的异常:

HTTP Status 500 - Handler processing failed; nested exception is java.lang.AbstractMethodError: org.apache.commons.dbcp.DelegatingPreparedStatement.setBinaryStream(ILjava/io/InputStream;J)V

type Exception report

message Handler processing failed; nested exception is java.lang.AbstractMethodError: org.apache.commons.dbcp.DelegatingPreparedStatement.setBinaryStream(ILjava/io/InputStream;J)V

description The server encountered an internal error that prevented it from fulfilling this request.

exception 

org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.AbstractMethodError: org.apache.commons.dbcp.DelegatingPreparedStatement.setBinaryStream(ILjava/io/InputStream;J)V
org.springframework.web.servlet.DispatcherServlet.triggerAfterCompletionWithError(DispatcherServlet.java:1259)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:838)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)

root cause 

java.lang.AbstractMethodError: org.apache.commons.dbcp.DelegatingPreparedStatement.setBinaryStream(ILjava/io/InputStream;J)V
org.hibernate.type.descriptor.sql.BlobTypeDescriptor$5$1.doBind(BlobTypeDescriptor.java:133)
org.hibernate.type.descriptor.sql.BlobTypeDescriptor$2$1.doBind(BlobTypeDescriptor.java:90)
org.hibernate.type.descriptor.sql.BasicBinder.bind(BasicBinder.java:93)
org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:280)
org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:275)
org.hibernate.type.AbstractSingleColumnStandardBasicType.nullSafeSet(AbstractSingleColumnStandardBasicType.java:57)
org.hibernate.persister.entity.AbstractEntityPersister.dehydrate(AbstractEntityPersister.java:2786)
org.hibernate.persister.entity.AbstractEntityPersister.dehydrate(AbstractEntityPersister.java:2761)
org.hibernate.persister.entity.AbstractEntityPersister$4.bindValues(AbstractEntityPersister.java:2968)
org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:57)
org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2975)
org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3487)
org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:81)
org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:377)
org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:214)
org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:194)
org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:178)
org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:321)
org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:286)
org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:192)
org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:125)
org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:206)
org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55)
org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:191)
org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49)
org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:764)
org.hibernate.internal.SessionImpl.save(SessionImpl.java:756)
org.hibernate.internal.SessionImpl.save(SessionImpl.java:752)
net.viralpatel.docmanager.dao.DocumentDAO.save(DocumentDAO.java:23)
net.viralpatel.docmanager.dao.DocumentDAO$$FastClassByCGLIB$$21ec305f.invoke(<generated>)
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:698)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:631)
net.viralpatel.docmanager.dao.DocumentDAO$$EnhancerByCGLIB$$3c5ce7aa.save(<generated>)
net.viralpatel.docmanager.controller.DocumentController.save(DocumentController.java:86)
net.viralpatel.docmanager.controller.DocumentController$$FastClassByCGLIB$$5615142d.invoke(<generated>)
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:698)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:631)
net.viralpatel.docmanager.controller.DocumentController$$EnhancerByCGLIB$$1edfcfb8.save(<generated>)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:597)
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:440)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:428)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:838)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)  

这是 hibernate.cfg.xml:

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">  
<hibernate-configuration>
    <session-factory>
        <mapping class="net.viralpatel.docmanager.model.Document" />
    </session-factory>

</hibernate-configuration>  

这是文档类:

@Entity
@Table(name="documents")
public class Document {

    @Id
    @GeneratedValue
    @Column(name="id")
    private Integer id;

    @Column(name="name")
    private String name;

    @Column(name="description")
    private String description;

    @Column(name="filename")
    private String filename;

    @Column(name="content")
    @Lob
    private Blob content;

    @Column(name="content_type")
    private String contentType;

    @Column(name="created")
    private Date created;

    //Getter and Setter methods
    public Blob getContent(){return content;}
    public String getContentType(){return contentType;}
    public String getDescription(){return description;}
    public String getFileName(){return filename;}
    public String getName(){return name;}

    public void setContent(Blob ct){content=ct;}
    public void setContentType(String ctype){contentType=ctype;}
    public void setDescription(String desc){description=desc;}
    public void setFileName(String fn){filename=fn;}
    public void setName(String nm){name=nm;}
}

jdbc.properties 是:

jdbc.driverClassName= com.mysql.jdbc.Driver
jdbc.dialect=org.hibernate.dialect.MySQLDialect
jdbc.databaseurl=jdbc:mysql://localhost:3306/docbd
jdbc.username=user
jdbc.password=pwd  

pom.xml 的相关部分包括:

<dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
  <version>5.1.10</version>
</dependency>
<dependency>
  <groupId>commons-dbcp</groupId>
  <artifactId>commons-dbcp</artifactId>
  <version>20030825.184428</version>
</dependency>
<dependency>
  <groupId>commons-pool</groupId>
  <artifactId>commons-pool</artifactId>
  <version>1.5.4</version>
</dependency>
<dependency>
  <groupId>commons-fileupload</groupId>
  <artifactId>commons-fileupload</artifactId>
  <version>1.2.1</version>
</dependency>
<dependency>
  <groupId>commons-io</groupId>
  <artifactId>commons-io</artifactId>
  <version>1.3</version>
</dependency>

Answer 1

问题似乎是 apache dbcp 的过时版本。在您的 pom.xml 中将其更新为 1.4 或更高版本，您应该可以开始了。