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+package com.qmth.teachcloud.report.business.utils;
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+
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+import org.slf4j.LoggerFactory;
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+import org.springframework.util.StringUtils;
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+
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+import javax.crypto.Cipher;
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+import javax.crypto.spec.IvParameterSpec;
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+import javax.crypto.spec.SecretKeySpec;
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+import java.util.Base64;
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+
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+/**
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+ * @Description: AES对称加密
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+ * @Param:
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+ * @return:
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+ * @Author: wangliang
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+ * @Date: 2019/10/11
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+ */
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+public class AesUtil {
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+ private static final org.slf4j.Logger LOGGER = LoggerFactory.getLogger(AesUtil.class);
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+ private static final String AES_MODE = "AES/CBC/PKCS5Padding";
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+ private static final String AES = "AES";
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+
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+
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+ private static final String RULE = "123456790abcdefg";
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+
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+ /**
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+ * 加密
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+ *
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+ * @param content
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+ * @param strKey
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+ * @param rule
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+ * @return
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+ * @throws Exception
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+ */
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+ private static byte[] encrypt(String content, String strKey, String rule) throws Exception {
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+ SecretKeySpec skeySpec = getKey(strKey);
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+ Cipher cipher = Cipher.getInstance(AES_MODE);
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+ IvParameterSpec iv = new IvParameterSpec(rule.getBytes());//AES规则,可自定义,例如A-Z排序
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+ cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
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+ return cipher.doFinal(content.getBytes());
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+ }
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+
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+ /**
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+ * 解密
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+ *
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+ * @param content
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+ * @param strKey
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+ * @param rule
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+ * @return
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+ * @throws Exception
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+ */
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+ private static String decrypt(byte[] content, String strKey, String rule) throws Exception {
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+ SecretKeySpec skeySpec = getKey(strKey);
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+ Cipher cipher = Cipher.getInstance(AES_MODE);
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+ IvParameterSpec iv = new IvParameterSpec(rule.getBytes());//AES规则,可自定义,例如A-Z排序
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+ cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
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+ byte[] original = cipher.doFinal(content);
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+ return new String(original);
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+ }
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+
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+ /**
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+ * 公钥
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+ *
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+ * @param strKey
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+ * @return
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+ * @throws Exception
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+ */
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+ private static SecretKeySpec getKey(String strKey) throws Exception {
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+ byte[] arrBTmp = strKey.getBytes();
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+ byte[] arrB = new byte[16]; // 创建一个空的16位字节数组(默认值为0)
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+ for (int i = 0; i < arrBTmp.length && i < arrB.length; i++) {
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+ arrB[i] = arrBTmp[i];
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+ }
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+ return new SecretKeySpec(arrB, AES);
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+ }
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+
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+ /**
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+ * AES加密
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+ *
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+ * @param content
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+ * @param encryptKey
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+ * @return
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+ * @throws Exception
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+ */
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+ public static String encoder(String content, String encryptKey, String rule) throws Exception {
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+ if(StringUtils.isEmpty(rule)){
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+ rule = RULE;
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+ }
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+// LOGGER.info("AES加密前的内容:{},key:{}", content, encryptKey);
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+ String encoderText = Base64.getEncoder().encodeToString(encrypt(content, encryptKey, RULE));
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+// LOGGER.info("AES加密后的文本:{}", encoderText);
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+ return encoderText;
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+ }
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+
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+ /**
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+ * AES解密
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+ *
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+ * @param encryptStr
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+ * @param decryptKey
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+ * @return
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+ * @throws Exception
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+ */
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+ public static String decoder(String encryptStr, String decryptKey, String rule) throws Exception {
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+ if(StringUtils.isEmpty(rule)){
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+ rule = RULE;
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+ }
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+// LOGGER.info("AES解密前的内容:{},key:{}", encryptStr, decryptKey);
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+ String decoderText = decrypt(Base64.getDecoder().decode(encryptStr), decryptKey, RULE);
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+// LOGGER.info("AES解密后的文本:{}", decoderText);
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+ return decoderText;
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+ }
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+
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+ public static void main(String[] args) throws Exception {
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+// String encoder = encoder("2019302130225", "1", null);
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+// System.out.println(encoder);
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+// String decoder = decoder(encoder, "1", null);
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+// System.out.println(decoder);
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+
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+
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+ String encoder = Base64.getEncoder().encodeToString("".getBytes());
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+ System.out.println(encoder);
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+ String decoder = new String(Base64.getDecoder().decode(encoder));
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+ System.out.println(decoder);
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+ }
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+}
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