我在我的實體有一些byte[]
領域,例如:JPA,Mysql的斑點返回數據太長
@Entity
public class ServicePicture implements Serializable {
private static final long serialVersionUID = 2877629751219730559L;
// seam-gen attributes (you should probably edit these)
@Id
@GeneratedValue
private Long id;
private String description;
@Lob
@Basic(fetch = FetchType.LAZY)
private byte[] picture;
在字段設置爲BLOB
所以這應該是罰款我的數據庫架構。總之:每次當我嘗試插入圖片或PDF - 無非1mb
大,我只收到此
16:52:27,327 WARN [JDBCExceptionReporter] SQL Error: 0, SQLState: 22001
16:52:27,327 ERROR [JDBCExceptionReporter] Data truncation: Data too long for column 'picture' at row 1
16:52:27,328 ERROR [STDERR] javax.persistence.PersistenceException: org.hibernate.exception.DataException: could not insert: [de.ac.dmg.productfinder.entity.ServicePicture]
16:52:27,328 ERROR [STDERR] at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:629)
16:52:27,328 ERROR [STDERR] at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:218)
16:52:27,328 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
16:52:27,328 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
16:52:27,328 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
16:52:27,328 ERROR [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
16:52:27,328 ERROR [STDERR] at org.jboss.seam.persistence.EntityManagerInvocationHandler.invoke(EntityManagerInvocationHandler.java:46)
16:52:27,328 ERROR [STDERR] at $Proxy142.persist(Unknown Source)
我檢查了我的MySQL CNF和max_allowed
參數是設置爲16M
- 我這麼想嗎?
通過此鏈接解決http://enricogi.blogspot.com/2008/12/blob-type-in-mysql.html - 簡而言之 - MySQL Blob的最大尺寸爲64k – onigunn 2010-08-17 15:19:16