Question

我尝试更新表格＆＃34; image＆＃34;在我的数据库中插入blob类型。

public static void main (String args[]) throws FileNotFoundException{
        SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
        Session session = sessionFactory.getCurrentSession();
        Transaction tx = session.beginTransaction();
        File image = new File("c://img//button.png");   
        System.out.println("file esistente ? "+image.exists());
        InputStream in = new FileInputStream(image);
        Blob blob = Hibernate.getLobCreator(session)    
                .createBlob(in, image.length());        
        Image imageClass = new Image();
        imageClass.setImage(blob);
        imageClass.setName("blobTry");
        session.save(imageClass);
        session.getTransaction().commit();
        sessionFactory.close();
    }

的imageCLASS：

   @Entity
@Table(name = "IMAGE")
public class Image {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "ID")
    private int id;

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

    @Column(name = "IMAGE")
    private Blob image;

        /* ... auto generated getters / setters */
    }

Hibernate用户映射：

 <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.password">root</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost/hibernatetutorial</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>

        <property name="hibernate.jdbc.batch_size">0</property> 
        <property name="hibernate.current_session_context_class">thread</property>
        <property name="hibernate.show_sql">true</property>

        <mapping class="com.journaldev.hibernate.model.Image" />

LIB：

enter image description here

错误：

Hibernate：插入IMAGE（IMAGE，NAME）值（？，？）异常线程＆＃34;主要＆＃34; java.lang.reflect.UndeclaredThrowableException at com.sun.proxy。$ Proxy13.save（未知来源）at com.journaldev.hibernate.main.ImageTest.main（ImageTest.java:35）引起 by：java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）at sun.reflect.NativeMethodAccessorImpl.invoke（未知来源）at sun.reflect.DelegatingMethodAccessorImpl.invoke（未知来源）at java.lang.reflect.Method.invoke（未知来源）at org.hibernate.context.internal.ThreadLocalSessionContext $ TransactionProtectionWrapper.invoke（ThreadLocalSessionContext.java:356） ... 2更多引起：java.lang.AbstractMethodError： com.mysql.jdbc.PreparedStatement.setBinaryStream（ILjava / IO / InputStream的;Ĵ）V 在 org.hibernate.type.descriptor.sql.BlobTypeDescriptor $ 5 $ 1.doBind（BlobTypeDescriptor.java:151）在 org.hibernate.type.descriptor.sql.BlobTypeDescriptor $ 2 $ 1.doBind（BlobTypeDescriptor.java:107）在 org.hibernate.type.descriptor.sql.BasicBinder.bind（BasicBinder.java:90）在 org.hibernate.type.AbstractStandardBasicType.nullSafeSet（AbstractStandardBasicType.java:286）在 org.hibernate.type.AbstractStandardBasicType.nullSafeSet（AbstractStandardBasicType.java:281）在 org.hibernate.type.AbstractSingleColumnStandardBasicType.nullSafeSet（AbstractSingleColumnStandardBasicType.java:56）在 org.hibernate.persister.entity.AbstractEntityPersister.dehydrate（AbstractEntityPersister.java:2843）在 org.hibernate.persister.entity.AbstractEntityPersister.dehydrate（AbstractEntityPersister.java:2818）在 org.hibernate.persister.entity.AbstractEntityPersister $ 4.bindValues（AbstractEntityPersister.java:3025）在 org.hibernate.id.insert.AbstractReturningDelegate.performInsert（AbstractReturningDelegate.java:57）在 org.hibernate.persister.entity.AbstractEntityPersister.insert（AbstractEntityPersister.java:3032）在 org.hibernate.persister.entity.AbstractEntityPersister.insert（AbstractEntityPersister.java:3558）在 org.hibernate.action.internal.EntityIdentityInsertAction.execute（EntityIdentityInsertAction.java:98）在org.hibernate.engine.spi.ActionQueue.execute（ActionQueue.java:490）在 org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction（ActionQueue.java:195）在 org.hibernate.engine.spi.ActionQueue.addInsertAction（ActionQueue.java:179）在 org.hibernate.engine.spi.ActionQueue.addAction（ActionQueue.java:214）在 org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction（AbstractSaveEventListener.java:324）在 org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate（AbstractSaveEventListener.java:288）在 org.hibernate.event.internal.AbstractSaveEventListener.performSave（AbstractSaveEventListener.java:194）在 org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId（AbstractSaveEventListener.java:125）在 org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId（DefaultSaveOrUpdateEventListener.java:209）在 org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId（DefaultSaveEventListener.java:55）在 org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient（DefaultSaveOrUpdateEventListener.java:194）在 org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate（DefaultSaveEventListener.java:49）在 org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate（DefaultSaveOrUpdateEventListener.java:90）在org.hibernate.internal.SessionImpl.fireSave（SessionImpl.java:715）在org.hibernate.internal.SessionImpl.save（SessionImpl.java:707）at org.hibernate.internal.SessionImpl.save（SessionImpl.java:702）... 7 更

Answer 1

从this post

取得以下答案

AbstractMethodError意味着你的JDBC驱动程序的PreparedStatements没有实现setBlob（int，InputStream，long）。

使用旧的setBlob（int，Blob）或更新驱动程序（Connector / J 5.1实现Jdbc 4.0，这应该是setBlob所需的内容（int，InputStream，long））

Answer 2

我将数据文件的类型更改为bean＆＃34; image＆＃34; Blob到byte []现在可以正常工作

Hibernate - Blob

2 个答案: