No suitable ImageReader found for source data(jpeg Picture format)

[devinliu1]

When using thumbnails to add watermarks

Thumbnails. of(inputStream). scale(1). outputQuality(1). toFile(filePath);

Throw exception net coobird. thumbnailator. tasks. UnsupportedFormatException: No suitable ImageReader found for source data

[coobird]

Thumbnailator relies on the Image I/O API's to read/write images. As such, the supported image formats depend on what's available to the Java environment. More information in Which image formats are supported by Thumbnailator)

My guess would be that the file you think is a JPEG is not actually a JPEG. (For example, maybe the file is some other format like WebP but has a .jpg extension.) I can only guess based on the limited information provided.

Once you do find out what kind of image format it is, I would refer you back to the FAQ about supported image formats and see the next steps you can take.

[devinliu1]

Thank you. The problem has been solved