@Lob
@Column(name = "logo")
private byte[] logo;
形式:
<h:form enctype="multipart/form-data">
<p:messages showDetail="true"/>
<p:fileUpload value="#{testController.file}"
update="messages"
mode="simple"
sizeLimit="1048576"
allowTypes="/(\.|\/)(gif|jpe?g|png)$/"/>
<p:growl id="messages" showDetail="true"/>
<p:commandButton value="Submit" ajax="false"
actionListener="#{testController.upload}"/>
</h:form>
豆:
private testEntity current;
private UploadedFile file;
public UploadedFile getFile() {
return file;
}
public void upload() {
if (file != null) {
try {
byte[] data = file.getContents();
current.setLogo(data);
getFacade().edit(current);
JsfUtil.addSuccessMessage("Successful! " + file.getFileName() + " is uploaded.");
} catch (Exception e) {
}
}
}
当我尝试上载像80KB的图片文件,它会给我这个例外
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column 'logo' at row 1
但如果我只上传10kb的图片,代码就起作用。
使用JSF 2.0,Primefaces 3.5,大多数代码是使用CRUD自动生成的。
你如何声明你的数据库列? – skuntsel 2013-03-22 06:12:05
这是一个JPA问题,而不是JSF。 – 2013-03-22 06:14:00
我宣布它为BLOB – galao 2013-03-22 06:49:30