Method decrypt

src/main/java/cms/utils/AES.java:69–93

解密 @param data 数据 @param key 密码 @param iv 初始化向量 @return

(String data,String key,String iv)

	 * @return
	 */
    public static String decrypt(String data,String key,String iv) { 
    	if(iv == null || iv.length() != 16){//如果iv为空，则使用默认值
			iv = IV_DEFAULT;
		}
    	
        try { 
            String text = Base64.decode(data.getBytes()); 
               
            byte[] by = ConvertTobyte(text); 
            Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding"); 
            SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES"); 
            IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes()); 
        
            cipher.init(Cipher.DECRYPT_MODE, keyspec, ivspec); 
        
            byte[] original = cipher.doFinal(by); 
            String originalString = new String(original); 
            return originalString.trim(); 
        }catch (Exception e) {
        	if (logger.isErrorEnabled()) {
	            logger.error("解密",e);
	        }
        } 
        return null; 
    } 
       
    private static byte[] ConvertTobyte(String data) { 
        int maxLength = data.length();