在Liferay中上传和显示数据库中的图像

Question

I have written code for upload and display of images in java. I am using liferay. Since to my knowledge liferay service.xml doesnt have Blob I used an alternative way by modifying the portlet-model-hints.xml file. Initially the field for storing image was made string which was changed to Clob in the above mentioned file. After building services it becomes longtext. I stored the images as longtext and when I try to display the text is displayed. How should I try to display the pics stored in the mysql database?

Answer 1

Create a hook that renders the value of the field as a image (transmute backwards from what you did to store it as text in the first place)

you should check out the liferay jackrabit configuration, maybe it can help you storing the images in the db in the first place

Answer 2

I was looking at service.xml related to document library contents ( see online here ), and...

...
<column name="repositoryId" type="long" />
<column name="path" type="String" />
<column name="version" type="String" />
<column name="data" type="Blob" />
...

So it has Blob type.
I hope this helps you.