The reason is the base64url encoding. The three parts of a JWT are all base64url encoded. Base64 encoding transforms the input data to a 6-Bit representation, mapped to a set of 64 ASCII characters. If you have 3 bytes source data (24 bits), the base64 encoded result is 4 characters long, each character representing a … Read more
To read large JSON string with use of JsonConvert.DeserializeObject will consume your lots of memory. So One of the ways to over come from this issue, you can create an instance of JsonSerializer as given below. using (StreamReader r = new StreamReader(filePath)) { using (JsonReader reader = new JsonTextReader(r)) { JsonSerializer serializer = new JsonSerializer(); … Read more
I followed xehpuk’s answer but had issues with certain images having the last few rows of pixels missing when rendered in certain browsers via a data url (Chrome and Firefox, Safari seemed to render them fine). I suspect this is because the browser is doing it’s best to interpret the data but the last few … Read more
The problem is that you are returning the toString() of the call to Base64.encodeBase64(bytes) which returns a byte array. So what you get in the end is the default string representation of a byte array, which corresponds to the output you get. Instead, you should do: encodedfile = new String(Base64.encodeBase64(bytes), “UTF-8”);
As described in this answer, uploaded files are sent as form data. As per FastAPI documentation: Data from forms is normally encoded using the “media type” application/x-www-form-urlencoded when it doesn’t include files. But when the form includes files, it is encoded as multipart/form-data. If you use File, FastAPI will know it has to get the … Read more
Passing parameter as String makes jasper report believe its a absolute file path, so you need another class. The most obvious would be java.awt.Image or java.io.InputStream. I choose java.io.InputStream since this will require less code, so the first thing we need to do now is to decode the base64 image String. There are several Base64 … Read more
The beginning of the data in the template gives a clue to what’s happening. ' is the HTML entity for a single quote ‘. Combined with the preceding b, b’, it looks like the representation of a byte string, rather than the contents of the string. Decode the byte string to a string before trying … Read more
This is because of how the Base64 encoding deals with long strings. From RFC 2045 – 6.8 Base64 Content-Transfer-Encoding The encoded output stream must be represented in lines of no more than 76 characters each. All line breaks or other characters not found in Table 1 must be ignored by decoding software. In base64 data, … Read more
In order to be able to send an image via HTTP, you also need to encode its width, height and type. You need to serialize the Mat into a stream and encode that stream with libb64. On the other side you need to decode that stream and deserialize the image to retrieve it. I implemented … Read more
What you get is just the toString output of an array. You need however the byte array converted to a String. You should create a method in bean public String getByteArrayString() { return new String(this.imageByteArray); } and reference this in your JSP. While technically you should define which encoding to use for an array of … Read more