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How to save a PNG image server-side, from a base64 data string
...o convert canvas drawings to PNG images.
What I need now is to turn those base64 strings that this tool generates, into actual PNG files on the server, using PHP.
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The input is not a valid Base-64 string as it contains a non-base 64 character
... another console application after converting it to Byte array and then to Base64 string. This part works, but when the same stream is received at the application, it gets manipulated and is no longer a valid Base64 string. Some junk characters are getting introduced into the stream.
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Base64 length calculation?
After reading the base64 wiki ...
15 Answers
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Http Basic Authentication in Java using HttpClient?
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Have you tried this (using HttpClient version 4):
String encoding = Base64Encoder.encode(user + ":" + pwd);
HttpPost httpPost = new HttpPost("http://host:post/test/login");
httpPost.setHeader(HttpHeaders.AUTHORIZATION, "Basic " + encoding);
System.out.println("executing request " + httpPost....
Why do we use Base64?
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Your first mistake is thinking that ASCII encoding and Base64 encoding are interchangeable. They are not. They are used for different purposes.
When you encode text in ASCII, you start with a text string and convert it to a sequence of bytes.
When you encode data in Base64, you...
Converting Secret Key into a String and Vice Versa
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You can convert the SecretKey to a byte array (byte[]), then Base64 encode that to a String. To convert back to a SecretKey, Base64 decode the String and use it in a SecretKeySpec to rebuild your original SecretKey.
For Java 8
SecretKey to String:
// create new key
SecretKey secret...
What is base 64 encoding used for?
I've heard people talking about "base 64 encoding" here and there. What is it used for?
18 Answers
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NodeJS: How to decode base64 encoded string back to binary? [duplicate]
...ord hashing with salt, so I generated salt as binary, hashed the password, base64 encoded the password and salt then stored them into database.
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What is the effect of encoding an image in base64?
If I convert an image (jpg or png) to base64, then will it be bigger, or will it have the same size? How much greater will it be?
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糯米推全景地图 让竞争对手们如何接招？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...以看到自己想要看到的场景，而别的平台只能看到呆板的图片，顾客愿意选择那个平台呢？预知权、信任感、安全感，这才是顾客最想要的。我们可以设想，顾客想去某家吃饭，得看看干净卫生不，餐厅的环境是否优雅，位置是...