java aes加密解密

package com.cloud7.utils;


import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.StandardCharsets;

public class SignAesUtil {



    /**
     *解密AES
     * @param cipherStr
     * @return
     */
    public static String decrypt(String cipherStr)  {
         String key = "webthanos123.com";
         String IV = "wivthanos123.com";
        String result="";
        BASE64Decoder decoder = new BASE64Decoder();
        IvParameterSpec iv = new IvParameterSpec(IV.getBytes(StandardCharsets.UTF_8));
        SecretKeySpec secretKey = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "AES");
        try {
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            cipher.init(Cipher.DECRYPT_MODE, secretKey, iv);
            result = new String(cipher.doFinal(decoder.decodeBuffer(cipherStr)), StandardCharsets.UTF_8);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

    /**
     * 将二进制转换成16进制
     *
     * @param buf
     * @return
     */
    public static String parseByte2HexStr(byte buf[]) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < buf.length; i++) {
            String hex = Integer.toHexString(buf[i] & 0xFF);
            if (hex.length() == 1) {
                hex = '0' + hex;
            }
            sb.append(hex.toUpperCase());
        }
        return sb.toString();
    }

//    public static String encrypt(String cipherStr)  {
//        String key = "webthanos123.com";
//        String IV = "wivthanos123.com";
//        String result="";
//        BASE64Encoder encoder = new BASE64Encoder();
//        IvParameterSpec iv = new IvParameterSpec(IV.getBytes(StandardCharsets.UTF_8));
//        SecretKeySpec secretKey = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "AES");
//        try {
//            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
//            cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);
//            byte[] dataBytes = cipherStr.getBytes();
//            int blockSize = cipher.getBlockSize();
//            int plaintextLength = dataBytes.length;
//            if (plaintextLength % blockSize != 0) {
//                plaintextLength = plaintextLength + (blockSize - (plaintextLength % blockSize));
//            }
//            byte[] plaintext = new byte[plaintextLength];
//            System.arraycopy(dataBytes, 0, plaintext, 0, dataBytes.length);
//            byte[] encrypted = cipher.doFinal(plaintext);
//            result=encoder.encode(encrypted).trim();
//           // new String(cipher.doFinal(encoder.encode(cipherStr.getBytes(StandardCharsets.UTF_8)).getBytes(StandardCharsets.UTF_8)));
//        } catch (Exception e) {
//            e.printStackTrace();
//        }
//        return result;
//    }

    /**
     * 加密
     * @param data
     * @return
     * @throws Exception
     */
    public static String encryptAES(String data) throws Exception {
        String key = "webthanos123.com";
        String IV = "wivthanos123.com";
        try {
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            int blockSize = cipher.getBlockSize();
            byte[] dataBytes = data.getBytes();
            int plaintextLength = dataBytes.length;

//            if (plaintextLength % blockSize != 0) {
//                plaintextLength = plaintextLength + (blockSize - (plaintextLength % blockSize));
//            }

//            byte[] plaintext = new byte[plaintextLength];
//            System.arraycopy(dataBytes, 0, plaintext, 0, dataBytes.length);

            IvParameterSpec iv = new IvParameterSpec(IV.getBytes(StandardCharsets.UTF_8));
            SecretKeySpec secretKey = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "AES");
            cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);
            byte[] encrypted = cipher.doFinal(dataBytes);
            BASE64Encoder encoder = new BASE64Encoder();
            return encoder.encode(encrypted).trim(); // BASE64做转码。

        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }


    public static void main(String[] args) throws Exception {

        String body=encryptAES("{\"userName\":\"lic\",\"password\":\"Lic135.com\",\"code\":\"d8gp\"}");
        System.out.println(body);
        //HeKB9CslDyypING/BZqBfJxhKhBHJ8UUWvnG7ygVSBDqE8YhO3ijMhSEK4b121KLxUQjPUMJbwma4PTYeeUI3A==
        //HeKB9CslDyypING/BZqBfJxhKhBHJ8UUWvnG7ygVSBDqE8YhO3ijMhSEK4b121KLxUQjPUMJbwma4PTYeeUI3A==
        System.out.println(decrypt(body));
    }


}