Upload image using data URI to server with Java (PlayFramework-2.6 or Plain Java)

Question

I am passing an image from a webpage using AJAX request. The image is passed as a Data URI to a Java function as shown below.

    public Result upload() {
    String dataUri = request().body().asText();
    System.out.println(dataUri);
    File file = dataUri;

    return ok("File uploaded");
}

The problem I am having is I think I need to convert the data URI to a file object in order to pass it into "File file = ". And if I can do that, then the image will be uploaded to the server. Any takers?

What error are you getting when you compile/run it? Have you researched how to convert data URI to File object? — pd12
– pd12, Commented Aug 30, 2018 at 13:21
I've researched a lot but haven't found a solution that works yet, the error i get is "expected java.file.io" but got string or something like that. — LorryBit
– LorryBit, Commented Aug 30, 2018 at 13:34
I don't know what format your data is in, but since it's an image, I'm assuming it's base64. I just had a read of en.wikipedia.org/wiki/Data_URI_scheme and seems like you would need to pull out the base64 encoded binary using some string manipulation or data URI library, and decode to binary to write to a file. (1st google search for writing to File object in java: baeldung.com/java-write-to-file ) — pd12
– pd12, Commented Aug 30, 2018 at 14:22
Cropped and uploaded! I found another link on stackoverflow that showed me how to convert base64 image to file. I have successfully loaded the cropped file to a directory on the server. Thanks for your help!! The link which has the answer is here: stackoverflow.com/questions/23979842/… — LorryBit
– LorryBit, Commented Aug 31, 2018 at 10:34

LorryBit · Accepted Answer · 2018-08-31 10:36:05Z

0

Cropped and uploaded! I found another link on stackoverflow that showed me how to convert base64 image to file. I have successfully loaded the cropped file to a directory on the server. Thanks for your help!! The link which has the answer is here: Convert base64 string to image

answered Aug 31, 2018 at 10:36

LorryBit

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