AES加密之后经过Base64转码

package com.tickets.util;import javax.crypto.Cipher;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;import org.apache.log4j.Logger;/** * 加解密工具类 * @author ljw * 2017年12月25日 */public class PwdUtil {  static Logger logger = Logger.getLogger(PwdUtil.class);  /**   * 加密   *    * @param content   *          需要加密的内容   * @param password   *          加密密码   * @return   */  public static String encrypt(String content, String password) throws Exception {    try {      byte[] raw = password.getBytes("UTF-8");      if (raw.length != 16) {        throw new IllegalArgumentException("Invalid key size. " + password + ", 密钥 token 长度不是16 位");      }      javax.crypto.spec.SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");      javax.crypto.Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");      cipher.init(Cipher.ENCRYPT_MODE, skeySpec,          new javax.crypto.spec.IvParameterSpec(new byte[16])); // zero      byte[] fina = cipher.doFinal(content.getBytes("UTF-8"));      return new String(org.apache.commons.codec.binary.Base64.encodeBase64(fina));    } catch (Exception e) {      logger.error(e.getMessage(), e);      throw e;    }  }  /**   * 解密   *    * @param content   *          需要解密的内容   * @param password   *          加密密码   * @return   */  public static String decrypt(String content, String password) throws Exception {    try {      byte[] raw = password.getBytes("UTF-8");      if (raw.length != 16) {        throw new IllegalArgumentException("Invalid key size. " + password + ", 密钥 token 长度不是16 位");      }      SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");      Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");      cipher.init(Cipher.DECRYPT_MODE, skeySpec, new IvParameterSpec(new byte[16]));      byte[] toDecrypt = org.apache.commons.codec.binary.Base64.decodeBase64(content.getBytes());      byte[] original = cipher.doFinal(toDecrypt);      return new String(original, "UTF-8");    } catch (IllegalArgumentException e) {      logger.error(e.getMessage(), e);      throw e;    } catch (Exception e) {      logger.error(e.getMessage(), e);    }    return null;  }}