How to perform BASE64 encoding and decoding in Java

BASE64 encoding is a common character encoding, which is used in many places. JDK provides very convenient BASE64Encoder and BASE64Decoder, which can be used to conveniently complete BASE64-based encoding and decoding. The following are two small functions compiled by myself for BASE64 encoding and decoding:

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Import sun. misc. BASE64Encoder;
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Import sun. misc. BASE64Decoder;
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// Encode s with BASE64
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PublicstaticString getBASE64 (String s ){
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If (s = null) returnnull;
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Return (new sun. misc. BASE64Encoder (). encode (s. getBytes ());
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}
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// Decodes the BASE64 encoded string s.
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PublicstaticString getFromBASE64 (String s ){
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If (s = null) returnnull;
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BASE64Decoder decoder = new BASE64Decoder ();
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Try {
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Byte [] B = decoder. decodeBuffer (s );
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ReturnnewString (B );
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} Catch (Exception e ){
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Returnnull;
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}
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}
Author: liweigov