调用解密手机号接口，经常第一次失败，重新调用才会成功

解密代码如下：

try {
    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS7Padding");
    Key sKeySpec = new SecretKeySpec(keyByte, "AES");
    cipher.init(Cipher.DECRYPT_MODE, sKeySpec, generateIV(ivByte));// 初始化
    byte[] result = cipher.doFinal(content);
    return  new String(result,"UTF-8");
} catch (NoSuchAlgorithmException e) {
    e.printStackTrace();
} catch (NoSuchPaddingException e) {
    e.printStackTrace();
} catch (InvalidKeyException e) {
    e.printStackTrace();
} catch (IllegalBlockSizeException e) {
    e.printStackTrace();
} catch (BadPaddingException e) {
    e.printStackTrace();
} catch (NoSuchProviderException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
} catch (Exception e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}