package com.ruoyi.jianguan.elutong.core;
|
|
import java.nio.charset.Charset;
|
import java.nio.charset.StandardCharsets;
|
import java.util.Base64;
|
|
public abstract class Base64Tools {
|
|
private static final Charset DEFAULT_CHARSET = StandardCharsets.UTF_8;
|
|
/**
|
* Base64-encode the given byte array.
|
*
|
* @param src the original byte array
|
* @return the encoded byte array
|
*/
|
public static byte[] encode(byte[] src) {
|
if (src.length == 0) {
|
return src;
|
}
|
return Base64.getEncoder().encode(src);
|
}
|
|
/**
|
* Base64-decode the given byte array.
|
*
|
* @param src the encoded byte array
|
* @return the original byte array
|
*/
|
public static byte[] decode(byte[] src) {
|
if (src.length == 0) {
|
return src;
|
}
|
return Base64.getDecoder().decode(src);
|
}
|
|
/**
|
* Base64-encode the given byte array using the RFC 4648 "URL and Filename Safe Alphabet".
|
*
|
* @param src the original byte array
|
* @return the encoded byte array
|
* @since 4.2.4
|
*/
|
public static byte[] encodeUrlSafe(byte[] src) {
|
if (src.length == 0) {
|
return src;
|
}
|
return Base64.getUrlEncoder().encode(src);
|
}
|
|
/**
|
* Base64-decode the given byte array using the RFC 4648 "URL and Filename Safe Alphabet".
|
*
|
* @param src the encoded byte array
|
* @return the original byte array
|
* @since 4.2.4
|
*/
|
public static byte[] decodeUrlSafe(byte[] src) {
|
if (src.length == 0) {
|
return src;
|
}
|
return Base64.getUrlDecoder().decode(src);
|
}
|
|
/**
|
* Base64-encode the given byte array to a String.
|
*
|
* @param src the original byte array (may be {@code null})
|
* @return the encoded byte array as a UTF-8 String
|
*/
|
public static String encodeToString(byte[] src) {
|
if (src.length == 0) {
|
return "";
|
}
|
return new String(encode(src), DEFAULT_CHARSET);
|
}
|
|
/**
|
* Base64-decode the given byte array from an UTF-8 String.
|
*
|
* @param src the encoded UTF-8 String
|
* @return the original byte array
|
*/
|
public static byte[] decodeFromString(String src) {
|
if (src.isEmpty()) {
|
return new byte[0];
|
}
|
return decode(src.getBytes(DEFAULT_CHARSET));
|
}
|
|
/**
|
* Base64-encode the given byte array to a String using the RFC 4648 "URL and Filename Safe Alphabet".
|
*
|
* @param src the original byte array
|
* @return the encoded byte array as a UTF-8 String
|
*/
|
public static String encodeToUrlSafeString(byte[] src) {
|
return new String(encodeUrlSafe(src), DEFAULT_CHARSET);
|
}
|
|
/**
|
* Base64-decode the given byte array from an UTF-8 String using the RFC 4648 "URL and Filename Safe Alphabet".
|
*
|
* @param src the encoded UTF-8 String
|
* @return the original byte array
|
*/
|
public static byte[] decodeFromUrlSafeString(String src) {
|
return decodeUrlSafe(src.getBytes(DEFAULT_CHARSET));
|
}
|
|
}
|
