前后端统一AES加密解密，不考虑vi，先直接用，以后再深入研究。

前端代码

//本地测试“npm install crypto-js” 公网直接引比较快的库，或者直接下载js打包到项目
const CryptoJS = require('crypto-js');

/**
 * aes加密 不带偏移量参数
 * @param word
 * @param aesKey
 * @returns {string}
 */
function encrypt(word,aesKey){
    var key = CryptoJS.enc.Utf8.parse(aesKey);
    var srcs = CryptoJS.enc.Utf8.parse(word);
    var encrypted = CryptoJS.AES.encrypt(srcs, key, {mode:CryptoJS.mode.ECB,padding: CryptoJS.pad.Pkcs7});
    return encrypted.toString();
}

/**
 * 解密 不带偏移量参数
 * @param word
 * @param aesKey
 * @returns {*}
 */
function decrypt(word,aesKey){
    var key = CryptoJS.enc.Utf8.parse(aesKey);
    var decrypt = CryptoJS.AES.decrypt(word, key, {mode:CryptoJS.mode.ECB,padding: CryptoJS.pad.Pkcs7});
    return CryptoJS.enc.Utf8.stringify(decrypt).toString();
}

let content = "叶影的诉说";
let key = "1234567890123456";
console.log("前端加密前：" + content);
console.log("前端加密密钥和解密密钥：" + key);
let encryptStr = encrypt(content, key);
console.log("前端加密后：" + encryptStr);
let decryptStr = decrypt(encryptStr, key);
console.log("前端解密后：" + decryptStr);

let encryptStrServer = "yMlouFhoG53UhHc93607gQ==";
console.log("后端原始密文："+encryptStrServer);
let decryptStrServer = decrypt(encryptStrServer, key);
console.log("后端密文解密后："+decryptStrServer);

后端代码

package com.rokid;

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.lang3.StringUtils;
import sun.misc.BASE64Decoder;

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.spec.SecretKeySpec;
import java.math.BigInteger;

/**
 * aes加密解密工具 不考虑vi
 * @author: yanyan
 * @Date: 2021/12/21 10:03
 */
public class AesUtil {
    //密钥
    private static final String KEY = "1234567890123456";
    //算法
    private static final String ALGORITHMSTR = "AES/ECB/PKCS5Padding";

    /**
     * aes解密
     * @param encrypt   内容
     * @return
     * @throws Exception
     */
    public static String aesDecrypt(String encrypt) {
        try {
            return aesDecrypt(encrypt, KEY);
        } catch (Exception e) {
            e.printStackTrace();
            return "";
        }
    }

    /**
     * aes加密
     * @param content
     * @return
     * @throws Exception
     */
    public static String aesEncrypt(String content) {
        try {
            return aesEncrypt(content, KEY);
        } catch (Exception e) {
            e.printStackTrace();
            return "";
        }
    }

    /**
     * 将byte[]转为各种进制的字符串
     * @param bytes byte[]
     * @param radix 可以转换进制的范围，从Character.MIN_RADIX到Character.MAX_RADIX，超出范围后变为10进制
     * @return 转换后的字符串
     */
    public static String binary(byte[] bytes, int radix){
        return new BigInteger(1, bytes).toString(radix);// 这里的1代表正数
    }

    /**
     * base 64 encode
     * @param bytes 待编码的byte[]
     * @return 编码后的base 64 code
     */
    public static String base64Encode(byte[] bytes){
        return Base64.encodeBase64String(bytes);
    }

    /**
     * base 64 decode
     * @param base64Code 待解码的base 64 code
     * @return 解码后的byte[]
     * @throws Exception
     */
    public static byte[] base64Decode(String base64Code) throws Exception{
        return StringUtils.isEmpty(base64Code) ? null : new BASE64Decoder().decodeBuffer(base64Code);
    }


    /**
     * AES加密
     * @param content 待加密的内容
     * @param encryptKey 加密密钥
     * @return 加密后的byte[]
     * @throws Exception
     */
    public static byte[] aesEncryptToBytes(String content, String encryptKey) throws Exception {
        KeyGenerator kgen = KeyGenerator.getInstance("AES");
        kgen.init(128);
        Cipher cipher = Cipher.getInstance(ALGORITHMSTR);
        cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(encryptKey.getBytes(), "AES"));

        return cipher.doFinal(content.getBytes("utf-8"));
    }


    /**
     * AES加密为base 64 code
     * @param content 待加密的内容
     * @param encryptKey 加密密钥
     * @return 加密后的base 64 code
     * @throws Exception
     */
    public static String aesEncrypt(String content, String encryptKey) throws Exception {
        return base64Encode(aesEncryptToBytes(content, encryptKey));
    }

    /**
     * AES解密
     * @param encryptBytes 待解密的byte[]
     * @param decryptKey 解密密钥
     * @return 解密后的String
     * @throws Exception
     */
    public static String aesDecryptByBytes(byte[] encryptBytes, String decryptKey) throws Exception {
        KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");
        keyGenerator.init(128);
        Cipher cipher = Cipher.getInstance(ALGORITHMSTR);
        cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(decryptKey.getBytes(), "AES"));
        byte[] decryptBytes = cipher.doFinal(encryptBytes);
        return new String(decryptBytes);
    }


    /**
     * 将base 64 code AES解密
     * @param encryptStr 待解密的base 64 code
     * @param decryptKey 解密密钥
     * @return 解密后的string
     * @throws Exception
     */
    public static String aesDecrypt(String encryptStr, String decryptKey) throws Exception {
        return StringUtils.isEmpty(encryptStr) ? null : aesDecryptByBytes(base64Decode(encryptStr), decryptKey);
    }



    public static void main(String[] args) throws Exception {
        String content = "叶影的诉说";
        System.out.println("后端加密前：" + content);
        System.out.println("后端加密密钥和解密密钥：" + KEY);
        String encrypt = aesEncrypt(content, KEY);
        System.out.println("后端加密后：" + encrypt);
        String decrypt = aesDecrypt(encrypt, KEY);
        System.out.println("后端解密后：" + decrypt);

        String encryptWeb = "yMlouFhoG53UhHc93607gQ==";
        System.out.println("前端加密密文："+encryptWeb);
        String decryptWeb = aesDecrypt(encryptWeb, KEY);
        System.out.println("后端解密后：" + decryptWeb);
    }
}