AES加密后byte数组无法转为字符串解决

AES加密后byte数组无法转为字符串解决

AES加密后的byte数据不能直接转为字符串，此时可将其加密后的结果用base64加密，再转为字符串即可
工具类如下：

import lombok.extern.slf4j.Slf4j;

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.security.SecureRandom;
import java.util.Base64;

/**
 * 加解密工具类
 */
@Slf4j
public class AESUtil {
    private static final String DEFAULT_CHARSET = "UTF-8";
    private static final String KEY_ALGORITHM = "AES";
    private static final String DEFAULT_CIPHER_ALGORITHM = "AES/ECB/PKCS5Padding";

    /**
     * 加盐内容
     */
    private static final String SALTPRE="SJSJas23";

    public static String aes128EncryptAndToBase64(String arg){
        try {
            // 加密
            Cipher cipher = Cipher.getInstance(DEFAULT_CIPHER_ALGORITHM);
            byte[] byteContent = arg.getBytes(DEFAULT_CHARSET);
            cipher.init(Cipher.ENCRYPT_MODE, getSecretKey(SALTPRE));
            byte[] result = cipher.doFinal(byteContent);
            // 转为Base64
            Base64.Encoder encoder = Base64.getEncoder();
            byte[] encode = encoder.encode(result);
            return new String(encode);
        }catch (Exception e){
            log.error("加密数据出现问题 {}",arg,e);
            throw new IllegalArgumentException("加密数据出现问题");
        }
    }

    public static String aes128DecryptUseBase64(String arg){
        try {
            // Base64解密
            Base64.Decoder decoder = Base64.getDecoder();
            byte[] decode = decoder.decode(arg);

            // AES解密
            Cipher cipher = Cipher.getInstance(DEFAULT_CIPHER_ALGORITHM);
            cipher.init(Cipher.DECRYPT_MODE, getSecretKey(SALTPRE));
            byte[] result = cipher.doFinal(decode);
            // 转为utf-8
            return new String(result,DEFAULT_CHARSET);
        }catch (Exception e){
            log.error("解密数据出现问题 {}",arg,e);
            throw new IllegalArgumentException("解密数据出现问题");
        }
    }

    /**
     * 生成加密秘钥
     */
    private static SecretKeySpec getSecretKey(final String salt) throws Exception {
        //返回生成指定算法密钥生成器的 KeyGenerator 对象
        KeyGenerator kg = null;
        kg = KeyGenerator.getInstance(KEY_ALGORITHM);
        SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG" );
        secureRandom.setSeed(salt.getBytes());
        kg.init(128, secureRandom);
        SecretKey secretKey = kg.generateKey();
        return new SecretKeySpec(secretKey.getEncoded(), KEY_ALGORITHM);
    }

}