This question already has answers here:
How to retrieve and display images from a database in a JSP page?
(6 answers)
Closed 7 years ago.
What method should I use to retrieve and display my image which is store in mysql with the datatype longblob. As for string I simply use
(Example: rs.getString("foodname"))
but waht is the datatype to use for the image as I declare it as object in java class. So should i use ?
rs.getObject("image")
Thank you
Basically you need to get it as blob and convert this binary data to image see this example
Related
This question already has answers here:
How to provide a file download from a JSF backing bean?
(5 answers)
Base64 String to byte[] in java [duplicate]
(1 answer)
Closed 11 months ago.
Im working with java 6, jsf and icefaces.
In the database I have stored a Base64 string that is a pdf, I want to put a button in the screen to download that pdf.
I tried with the ice:outputResource component passing the bytes of the Base64 but it didnt worked.
Is there a way to achieve this?
Thanks
This question already has answers here:
ImageIO - get image type and exif data
(3 answers)
Closed 3 years ago.
I'm working on a project where I need to make pdf from image and merge it. For this I use PDFBox but at some point I need to read the exif of an image like the orientation and the resolution and so I go with metadata-extractor. I didn't find any useful doc or example.
I find that I can read a specifics exif but I don't know how exactly
Here is a list : List, they list most of the tag you need ( a more complete one : here
This question already has an answer here:
Collect and save submitted values of multiple dynamic HTML inputs back in servlet
(1 answer)
Closed 3 years ago.
How to pass a list from jsp to servlet? I want to add the dianomic field in my JSP and insert it through a servlet.
Use session.setAttribute(String name, Object value) within the JSP, then retrieve it using session.getAttribute(String name) in the servlet.
This question already has an answer here:
Does firebase log metadata such as 'created_at' automatically
(1 answer)
Closed 4 years ago.
My Android application is connected to Firebase, and I retrieve data from database successfully. But my question is there is any way to get what time the data stored in ddatabase to retrieve it to my application?
I hope my question is clear.
is there is any way to get what time the data stored in ddatabase
No, Firebase realtime database does not store metadata. You should create your own mechanism by storing the desired time as a timestamp in the database as explained here.
This question already has answers here:
How to display an image in jsp?
(2 answers)
Closed 7 years ago.
I am stored an image in postgres sql as bytea[] field.That is in byte format.I want to view the perfect image into my jsp page after storing the image.Please, point me to the solution or some ways to achieve this requirement.
Covert your image to Base64:
String imageBase64 = new String(Base64.getEncoder().encode(imageByteArray))
Note that Base64 class is coming from java.util package. If you not using JDK 8 you can easily find an alternative to do that.
Then in your JSP page:
<img src="data:image/png;base64,${imageBase64}" />