List<PicOperationRule> rules = new LinkedList<>();
// Add a rule for blind watermarking, and the processed image will be saved in the bucket with a location identifier in the format:
// examplewatermarkobject
rules.add(new PicOperationRule("examplewatermarkobject",
        "watermark/3/type/1/image/aHR0cDovL2V4YW1wbGVzLTEyNTEwMDAw"));
PicOperations picOperations = new PicOperations(true, rules);

PutObjectRequest putObjectRequest = new PutObjectRequest(bucket, cosPath, srcPath);
putObjectRequest.setPicOperations(picOperations);

// If the upload is successful, you will get 2 images: the original and the processed images
COSXMLUploadTask cosxmlUploadTask = transferManager.upload(putObjectRequest, uploadId);

GetObjectRequest getObjectRequest = new GetObjectRequest(bucket, cosPath, savePathDir, savedFileName);
// Add a text watermark
getObjectRequest.addQuery("watermark/3/type/3/text/dGVuY2VudCBjbG91ZA==", null);

COSXMLDownloadTask cosxmlDownloadTask =
        transferManager.download(applicationContext, getObjectRequest);