问题
I'm trying to store images in DB2
Database as BLOB
contents. I used JS
to convert the image content to base64
.
function loadImageFileAsURL()
{
var filesSelected = document.getElementById("inputFileToLoad").files;
if (filesSelected.length > 0)
{
var fileToLoad = filesSelected[0];
var fileReader = new FileReader();
fileReader.onload = function(fileLoadedEvent)
{
var textAreaFileContents = document.getElementById
(
"textAreaFileContents"
);
textAreaFileContents.innerHTML = fileLoadedEvent.target.result;
var ImgContent = fileLoadedEvent.target.result;
$("#IMAGE").attr("src",ImgContent);
};
fileReader.readAsDataURL(fileToLoad);
}
}
Now I need to convert this base64
content to binary and store them to my DB2
Database. Is there any way to do this in JavaScript?
And how to fetch this data from the database and display it on my mobile app using Adapters
. ?
回答1:
Why do you not simply store the image as encoded to base64 in database? I think this would be better in your scenario...
- You receive an image
- You use some library to handle the encoding to base64
Review this question: Base64 encoding and decoding in client-side Javascript - You store the image-now a string, in the database
- When you need to display the image in the app, fetch the contents and decode it (see step 2)
来源:https://stackoverflow.com/questions/22164828/storing-and-retrieving-images-from-db2-using-worklight-sql-adapters