Encrypt By javascript and decrypt by Java

I use AES encryption in my react-native app as below

import CryptoJS from 'crypto-js' ;
encryptFun() {
    var data = "123456";
    var key  = CryptoJS.enc.Latin1.parse('1234567812345678');
    var iv   = CryptoJS.enc.Latin1.parse('1234567812345678');  
    var encrypted = CryptoJS.AES.encrypt(
      data,
      key,
      {iv:iv,mode:CryptoJS.mode.CBC,padding:CryptoJS.pad.ZeroPadding
    });
    console.log('encrypted: ' + encrypted) ;
    var decrypted = CryptoJS.AES.decrypt(encrypted,key,{iv:iv,padding:CryptoJS.pad.ZeroPadding});
    console.log('decrypted: '+decrypted.toString(CryptoJS.enc.Utf8));
  }

Out come= encrypted: aK7+UX24ttBgfTnAndz9aQ==

following is the code I use in my backend using java for get the decrypt

 public static String desEncrypt() throws Exception {

        try
        {
            String data = "aK7+UX24ttBgfTnAndz9aQ==" ;
            String key = "1234567812345678";
            String iv = "1234567812345678";

            byte[] encrypted1 = new BASE64Decoder().decodeBuffer(data);

            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(encrypted1);
            String originalString = new String(original);
            return originalString;
        }
        catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

output= decryted : = 123456[][][][][][][][][][]

Iam getting out put as 16 bit as above. what I want is out put should come as only 123456.

Answer

I Suggest you use java.util.Base64 for decoding. The following worked out correctly. I would also suggest using trim in return originalString and see if it works out.

public class Decrypt {

    public static void main(String[] args) {
        try
        {
            String data = "aK7+UX24ttBgfTnAndz9aQ==" ;
            String key = "1234567812345678";
            String iv = "1234567812345678";

            Decoder decoder = Base64.getDecoder();   
             byte[] encrypted1 = decoder.decode(data);

            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(encrypted1);
            String originalString = new String(original);
            System.out.println(originalString.trim());
        }
        catch (Exception e) {
            e.printStackTrace();
        }
    }
}