base64

问题 How do you do this without saving to disk and then opening 'out.png' ? r = requests.get(url) mine,encoded = r.json()[0]['data'].split(',') #if it is segmentation decoded = base64.decodestring(encoded) if mine == 'data:image/png;base64': #TODO do this from memory g = open("out.png", "w") g.write(decoded) g.close() r = png.Reader('out.png') print r.read() 回答1: Use the bytes keyword r = png.Reader(bytes=decoded) 回答2: base53.decodestring() returns a string of the binary data, and according to

问题 I want to decode a base64 encoded image received over email on Google App Engine(GAE). When I extract the image from MimeMessage I get a base64DecoderStream object. I initially assumed that this decoded data is byte array in ARGB format, but that doesn't seem to be the case here. I verified this by comparing the decoded byte array with the one got from running "ImageIO.read(ImageFile).getRGB()" and they didn't match. So I was wondering:- 1) Which image format data did I get after decoding the

问题 I have an unencrypted/unencoded string - "565040574" . I also have the encrypted/encoded string for this string - "BSubW2AUWrSCL7dk9ucoiA==" . It looks like this string has been Base64ed after encryption, but I don't know which encryption algorithm has been used. If I convert "BSubW2AUWrSCL7dk9ucoiA==" string to bytes using Convert.FromBase64String("BSubW2AUWrSCL7dk9ucoiA==") , I get 16 bytes. Is there anything using which I can know what type of encryption has been used to encrypt the

问题 I have a problem working with Base64 Strings in C# I have an .exe which is called from php. It gets 2 params and returns an encrypted key. (The .exe is where I have the problem) In php I do this: <?php $key = "AAAA"; $pass=" AAAA"; echo shell_exec("cryptograph.exe generateKey $key $pass"); ?> It should work, becouse those are base 64 strings, or at least, I understand that a String with a length multiple of 4 is a valid base 64 string. But I get the following(Is in spanish but I will

问题 I am puzzled at this base64 decoding issue, and it seems that python and node.js does this differently. Node does this correctly I believe. Could anyone help point out why python does not work here? Thank you. Node > console.log(Buffer.from('Im3Osc6_z4HPgc-J==', 'base64').toString()); "mαορρω Python >>> from base64 import decodestring >>> print decodestring('Im3Osc6_z4HPgc-J==') "mαγ?s?p 回答1: What you provided is actually not a standard base64, but a URL-safe base64 which substitutes -

问题 I am making a website that displays games from a database made in MySQL workbench. I want to have images appear next to the relevant game title of said game. The problem I am having is that I am inserting these images into my database using BLOB and converting them to base64 within the PHP. When I do this and run it, the images come out clipped. This gets the information from the table that I created in MySQL function find_all_games(){ global $db; //Connects to database $sql = 'SELECT * FROM

问题 We have a problem with showing in browser (actually Chrome) binary images receiving from REST backend API. The backend REST endpoint defined in Java like this @GetMapping(path = "/images/{imageId:\\d+}/data", produces = MediaType.APPLICATION_OCTET_STREAM_VALUE) public @ResponseBody byte[] getImageData(@PathVariable long imageId) { return ... skipped ... } On the frontend we do these steps: request image data via fetch JS method call async function getImage(id) { return await fetch(`${URL}

问题 I want to do a multiple file upload and I have to convert an image into base64 encoded string. I have one form and two form fields, like firstname & image upload. Suppose a user enters his name and he will upload two photos and he will click submit means, I want convert these two images into base64 string and I want to make my expected JSON format, I don't where I have to change from this code, please anyone update my code var abc = 0; // Declaring and defining global increment variable. $

问题 I have a REST service which @Produces(MediaType.APPLICATION_JSON) . In the REST service, I have created an Image of type BufferedImage and then writing it to ImageIO as a png image. Next, I am encoding this Image as Base64 encoded string. Now I need to return this encoded string in JSON Format and then at the Client side I need to use the Base64 string in img tag as below : <img id="captchaImage" src="data:image/png;base64,<%=Base64ImageString%>"/> How I can pass the Base64 as MediaType

问题 I have a webView and I'm getting the webContent as String from a connection getting the response and change it into inserting into database and getting it in the Main2Activity but like I said after changing it into base64 encodeToString the pictures doesn't show it even if I didn't change it into base64 it doesn't show anything. for offline use public static String getHtml(String url) throws IOException { // Build and set timeout values for the request. URLConnection connection = (new URL(url