AESUtil加密工具

package com.example.tempshiro.util;

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.codec.binary.Base64;

import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.security.NoSuchAlgorithmException;

@Slf4j
public class AESUtil {

    // 默认算法
    private static final String ALGORITHM_STR = "AES/CBC/PKCS5Padding";


    public AESUtil() {
    }

    /**
     * @Description: aes加密
     * @Params: [content, encryptKey]
     * @Return: java.lang.String
     */
    public static String aesEncode(String content,String encryptKey){
        SecretKeySpec keySpec = new SecretKeySpec(encryptKey.getBytes(),"AES");

        try {
            Cipher cipher = Cipher.getInstance(ALGORITHM_STR);
            cipher.init(Cipher.ENCRYPT_MODE,keySpec,new IvParameterSpec(encryptKey.getBytes()));
            byte[] byteEncode = content.getBytes("utf-8");
            byte[] byteAES = cipher.doFinal(byteEncode);
            return new String(Base64.encodeBase64(byteAES));
        } catch (Exception e) {
            log.error("密文加密失败"+e.getMessage(),e);
            throw new RuntimeException("密文加密失败");
        }
    }

    public static String aesDecode(String content, String decryptKey) {
        try {
            SecretKeySpec keySpec = new SecretKeySpec(decryptKey.getBytes("utf-8"), "AES");

            //根据指定算法AES自成密码器
            Cipher cipher = Cipher.getInstance(ALGORITHM_STR);
            //初始化密码器，第一个参数为加密(Encrypt_mode)或者解密(Decrypt_mode)操作，第二个参数为使用的KEY
            cipher.init(Cipher.DECRYPT_MODE, keySpec, new IvParameterSpec(decryptKey.getBytes("utf-8")));
            //8.将加密并编码base64后的字符串内容base64解码成字节数组
            byte[] bytesContent = Base64.decodeBase64(content);
            /*
             * 解密
             */
            byte[] byteDecode = cipher.doFinal(bytesContent);
            return new String(byteDecode, "utf-8");
        } catch (NoSuchAlgorithmException e) {
            log.error("没有指定的加密算法::"+e.getMessage(),e);
        } catch (IllegalBlockSizeException e) {
            log.error("非法的块大小"+"::"+e.getMessage(),e);
            throw new RuntimeException("密文解密失败");
            //e.printStackTrace();
        } catch (NullPointerException e) {
            log.error("秘钥解析空指针异常"+"::"+e.getMessage(),e);
            throw new RuntimeException("秘钥解析空指针异常");
        } catch (Exception e) {
            log.error("秘钥AES解析出现未知错误"+"::"+e.getMessage(),e);
            throw new RuntimeException("密文解密失败");
        }
        //如果有错就返null
        return null;

    }
}