Remove/replace the escape character in the base64 compressed image in Java

Hello, My team and I are currently working on issue #4125 as part of our CodeDay internship. Our goal is to create a compressed image function in Java.

The compressed image returned in base64 format is generally good, but we've encountered some cases where escape characters appear (as shown in the attached screenshot 1 & 2), which renders the result invalid.

I attempted to remove these characters using the "replaceAll("", "")" method, but encountered an error (also shown below screenshot 3).

Could you please advise on the correct way to resolve this issue? Thank you.

public RuntimeResponse main(RuntimeRequest req, RuntimeResponse res) throws Exception {
...
// compressed image in Base64 string
        String compressedImage = "";
        Map<String, Object> responseData = new HashMap<>();

        if (Provider.TINY_PNG.getName().equals(provider)) {
            // Decode image from Base64 string
            byte[] imageByte = convertToByte(image);

            // Compress image
            byte[] compressedImageByte = tinifyCompress(imageByte, apiKey);

            // Encode image to Base64 string
            compressedImage = convertToBase64(compressedImageByte).replaceAll("\\", "");
        }

        responseData.put("success", true);
        responseData.put("image", compressedImage);
        return res.json(responseData);
}

Maybe that backslash is just because it's JSON encoded?

Yes, I think it’s JSON encoded. Should we just leave it?

Go ahead and submit the PR and we'll see

Thank you so much, I will do that.

Adding the link here for reference : https://github.com/appwrite/appwrite/issues/4125

Did you submit the PR yet?

I intend to submit the PR once we finish implementing the compressed image Kraken IO method. Would you like me to submit the current code?

Up to you. I thought it was already submitted but I didn't see the PR in the issue

Once we complete the final method, expected to be done within this week, I will submit it and inform you. Thank you!

Hi, I want to inform you that we submitted the PR. Here is the link: https://github.com/open-runtimes/examples/pull/174 Thank you.