import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
import java.util.Base64;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
public class AES {
	private static SecretKeySpec secretKey;
	private static byte[] key;
	public static void setKey(String myKey) 
	{
		MessageDigest sha = null;
		try {
			key = myKey.getBytes("UTF-8");
			sha = MessageDigest.getInstance("SHA-1");
			key = sha.digest(key);
			key = Arrays.copyOf(key, 16); 
			secretKey = new SecretKeySpec(key, "AES");
		} 
		catch (NoSuchAlgorithmException e) {
			e.printStackTrace();
		} 
		catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
	}
	public static String encrypt(String strToEncrypt, String secret) 
	{
		try 
		{
			setKey(secret);
			Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
			cipher.init(Cipher.ENCRYPT_MODE, secretKey);
			return Base64.getEncoder().encodeToString(cipher.doFinal(strToEncrypt.getBytes("UTF-8")));
		} 
		catch (Exception e) 
		{
			System.out.println("Error while encrypting: " + e.toString());
		}
		return null;
	}
	public static String decrypt(String strToDecrypt, String secret) 
	{
		try 
		{
			setKey(secret);
			Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5PADDING");
			cipher.init(Cipher.DECRYPT_MODE, secretKey);
			return new String(cipher.doFinal(Base64.getDecoder().decode(strToDecrypt)));
		} 
		catch (Exception e) 
		{
			System.out.println("Error while decrypting: " + e.toString());
		}
		return null;
	}
}

java加解密示例

public static void main(String[] args) 
{
	final String secretKey = "sssskkkkkey";

	String oroirnalString = "onitroad.com";
	String encryptedString = AES.encrypt(oroirnalString, secretKey) ;
	String decryptedString = AES.decrypt(encryptedString, secretKey) ;

	System.out.println(oroirnalString);
	System.out.println(encryptedString);
	System.out.println(decryptedString);
}