base64

问题 Does anyone know of any simple javascript that I can use to turn a base64 string into an image (jpg format preferably), so that I can save the image to a file? This is for a signature pad application. I can get the signature into a base64 format, but need to save the signature as an image file to use for embedding into a Crystal Report. 回答1: I have tried this method in a JSP page to print the image from a base64 string, I guess this should hold good for javascript too. Do not have sample data

问题 Well, not my server. My friend found it and sent it to me, trying to make sense of it. What it appears to be is a PHP IRC bot, but I have no idea how to decode it and make any sense of it. Here is the code: <?eval(gzinflate(base64_decode('some base 64 code here')))?> So I decoded the base64, and it output a ton of strange characters, I'm guessing either encrypted or a different file type, like when you change a .jpg to a .txt and open it. But I have no idea how to decode this and determine

问题 A similar question was asked here: Is base64 encoding always one to one And apparently the answer (to the similar question) is YES. I already know that, BUT I'd be curious to know the explanation for why these two strings appear to be equivalent after being Base64 decoded: cwB0AGQAAG== cwB0AGQAAA== One more thing... when you select the de-coded string then recode, both re-encode to the same value: cwB0AGQAAA== What happened? 回答1: base64 is not one-to-one; there are multiple ways to encode the

问题 I'm trying to mimic a php script that do the following : replace a GET vaiable's every space with a + sign ($var = preg_replace("/\s/","+",$_GET['var']); ) decoding to base64 : base64_decode($var); 1st i added a method perform a base64 decoding : public string base64Decode(string data) { try { System.Text.UTF8Encoding encoder = new System.Text.UTF8Encoding(); System.Text.Decoder utf8Decode = encoder.GetDecoder(); byte[] todecode_byte = Convert.FromBase64String(data); int charCount =

问题 I'm trying to mimic a php script that do the following : replace a GET vaiable's every space with a + sign ($var = preg_replace("/\s/","+",$_GET['var']); ) decoding to base64 : base64_decode($var); 1st i added a method perform a base64 decoding : public string base64Decode(string data) { try { System.Text.UTF8Encoding encoder = new System.Text.UTF8Encoding(); System.Text.Decoder utf8Decode = encoder.GetDecoder(); byte[] todecode_byte = Convert.FromBase64String(data); int charCount =

问题 I am trying to implement a image upload with other form elements with dropzone.js in laravel. So far I've managed to display the drag and drop image upload view with other form elements. And also get POST details from the submitted form. But when dropzone is passing the uploaded image to the database data save function it encode image with base64. I think I've managed to get the file extension also. And when I submit the button it gives me this error "Call to a member function move() on

问题 What is the efficient way to encode and decode an audio file in android I have tried the Base64 as below but after decoding the file size get increased. Encode ByteArrayOutputStream objByteArrayOS = new ByteArrayOutputStream(); File file = new File(path); FileInputStream objFileIS; try { objFileIS = new FileInputStream(file); byte[] byteBufferString = new byte[1024]; for (int readNum; (readNum = objFileIS.read(byteBufferString)) != -1;) { objByteArrayOS.write(byteBufferString, 0, readNum);

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . A friend asked me to look up why his WordPress site is not working at all. It turned out it's hacked. At the beginning of all PHP files an encoded string is injected, something like this: $zend_framework=" .... "; @error_reporting(0); $zend_framework("", "... I have checked the version of WordPress at /wp

问题 How can I Base64 an image so it would be suitable to send with nativescript fetch module? 回答1: Here is a basic demo for your case using test server "use strict"; var imageSourceModule = require("image-source"); function navigatingTo(args) { var page = args.object; // using icon.png from the template app from res://icon var imgSrc = imageSourceModule.fromResource("icon"); var imageAsBase64 = imgSrc.toBase64String("PNG"); fetch("https://httpbin.org/post", { method: "POST", headers: { "Content

问题 I have a simple PHP file which loads a file from my server, base64 encodes it and echoes it out. Then I have a simple HTML page that uses jQuery to fetch this file, base64 decode it and do a checksum test. The checksum test is not working. I md5'd the file in PHP after encoding it and md5'd it in javascript before decoding it and the checksums matched (So nothing went wrong during transit). However, the pre encoding and post decoding checksums do NOT match. I am using webtoolkit.base64.js for