commons-codec:1.13 开始加入了以下代码： private void validateCharacter(final int emptyBitsMask, final Context context) { if (isStrictDecoding() && (context.ibitWorkArea & emptyBitsMask) != 0) { throw new IllegalArgumentException( "Strict decoding: Last encoded character (before the paddings if any) is a valid base 64 alphabet but not a possible encoding. " +"Expected the discarded bits from the character to be zero."); } 代码查看地址：https://github.com/apache/commons-codec/blob/master/src/main/java/org/apache/commons/codec/binary/Base64.java 因此只能使用1.12版本或者更低的版本 还是希望腾讯能升级一下代码保证能使用新版本的包