aesKey = Base64.decodeBase64(encodingAesKey + "=");
错误信息;The method decodeBase64(byte[]) in the type Base64 is not applicable for the arguments (String)
decodeBase64(byte[])需要字节数组作为参数,而不是字符串。
java的话,用 (encodingAesKey + "=").getBytes("字节编码") 转换成Byte[]