后台对Json数据加密、解密

1、工具类

package com.abc.er.util; import org.apache.commons.codec.binary.Base64; import javax.crypto.*; import javax.crypto.spec.SecretKeySpec; import java.security.SecureRandom;  public class AesUtil {     public static void main(String[] args) throws Exception {         // aes + base  -->  aes + base         String content =   "{\"mac\":\"123\",\"idfa\":\"123\",\"clientIp\":\"456\",insertTime\":\"test\"}";         System.out.println("加密内容：" + content);         String key = "123abc";         System.out.println("加密密钥和解密密钥：" + key);         String encrypt = aesEncrypt(content, key);         System.out.println("加密后：" +encrypt);         String decrypt = aesDecrypt(encrypt, key);         System.out.println("解密后：" + decrypt);     }      /**      * 编码      * @param bstr      * @return String      */     public static String Base64encode(byte[] bstr) {         return Base64.encodeBase64String(bstr);     }      /**      * 解码      * @param str      * @return string      */     public static byte[] Base64decode(String str) {         return Base64.decodeBase64(str);     }      /*      * 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");         /*防止linux下 随机生成key*/         SecureRandom random = SecureRandom.getInstance("SHA1PRNG");         random.setSeed(encryptKey.getBytes());         kgen.init(128, random);         Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");         cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(kgen.generateKey().getEncoded(), "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) {         byte[] decryptBytes = new byte[0];         try {             KeyGenerator kgen = KeyGenerator.getInstance("AES");             /*防止linux下 随机生成key*/             SecureRandom random = SecureRandom.getInstance("SHA1PRNG");             random.setSeed(decryptKey.getBytes());             kgen.init(128, random);             Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");             cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(kgen.generateKey().getEncoded(), "AES"));             decryptBytes = cipher.doFinal(encryptBytes);             return new String(decryptBytes,"UTF-8");         } catch (Exception e) {             e.printStackTrace();         }         return decryptKey;      }      /**      * 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){         return aesDecryptByBytes(Base64decode(encryptStr), decryptKey);     } }

2、controller中调用

//加密stg为需要加密的方法 String strd = AesUtil.aesEncrypt(stg, "123abc"); //解密 String strd = AesUtil.aesDecrypt(stg, "123abc");