The getEncoder() method returns the Base64.Encoder class instance that encodes using the Basic type Base64 encoding scheme. The basic encoder keeps the things simple - no line feeds are added to the output and the output is mapped to a set of characters in the Base64 Alphabet ( a-zA-Z0-9+/). The only other approach would be to serialize the map yourself (iterate over the keys and values). The simplest way to Base64 encode a string in Java is by using the basic encoding scheme. Alternatively, we can use the StandardCharsets class introduced in Java 7 to encode the String. The the encoding then would look like this: JSONObject jso new JSONObject ( map ) String encoded new String (Base64.encodeBase64 ( jso.toString ( 4 ).toByteArray ())) Your solution works. Let us start with the basic encoding example. Now it is time to do the actual Base64 encoding in Java by using the Base64 class. The decoder ignores all line separators or other characters not found in the base64 Alphabet. Every line, except the last line, is separated from the next line by using a carriage return \r followed by a linefeed \n. The encoded output is represented in lines of no more than 76 characters each.
URL and Filename safe - This is very much similar to the Basic Base64 encoding except that + and / symbols are replaced with - and _ respectively to make the output URL and filename safe.If there are characters outside of the Base64 alphabet, the decoder rejects the data. Deserializer implements the ContextualDeserializer interface to get access to actual bean property (for example varB).Its necessary for detecting correct result type, because deserializer itself can be attached to a field of any type. The encoder does not add the line feed character. Ive done some experiments and here is a simple Jackson Deserializer which should work for you. Basic: - This is the standard Base64 encoding that only uses a-z, A-Z, 0-9, /, and + characters (also called The Base64 Alphabet) for encoding and decoding operation.The Base64 class was introduced in Java 8 and it supports the following variants of Base64 as specified in RFC 4648 and RFC 2045: This class provides static methods to get encoders and decoders for the Base64 encoding scheme.
#Base64 decode string to string java how to
In this article, you'll learn how to perform Base64 encoding and decoding by using the Base64 class in Java. It is primarily used to transfer content-based messages over the Internet. Base64 is a binary-to-text encoding scheme that describes binary data in an ASCII string format by translating it into a radix-64 representation.
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