.AESUtil加密解密工具类

    import java.security.Key;

    import java.security.SecureRandom;

    import java.util.Base64;

    import javax.crypto.Cipher;

    import javax.crypto.KeyGenerator;

    /**

     * @description: AES加密工具类

     * @author: maojialong

     * @date: 2017年11月7日 上午10:11:02

     */

    public class AESUtils {

        //实例化密钥

        private static Key key;

        //原始密钥

        private static String KEY_STR = "my-springmvc-2017-11-07";

        //编码

        private static String CHARSETNAME = "UTF-8";

        //密钥算法

        private static String KEY_ALGORITHM = "AES";

        //加密-解密算法 / 工作模式 / 填充方式

        private static String CIPHER_ALGORITHM = "AES/ECB/PKCS5Padding";

        /**

         * 初始化key

         */

        static {

            try {

                KeyGenerator kgen = KeyGenerator.getInstance(KEY_ALGORITHM);

                SecureRandom random = SecureRandom.getInstance("SHA1PRNG");

                random.setSeed(KEY_STR.getBytes());

                kgen.init(, random);

                key = kgen.generateKey();

                kgen = null;

            } catch (Exception e) {

                throw new RuntimeException(e);

            }

        }

        /**

         * @description: AES对称加密字符串，并通过Jdk自带Base64转换为ASCII

         * @author: Administrator

         * @date: 2017年11月7日 上午9:37:48

         * @param str

         * @return

         */

        public static String getEncryptString(String str) {

            try {

                byte[] bytes = str.getBytes(CHARSETNAME);

                Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);

                cipher.init(Cipher.ENCRYPT_MODE, key);

                byte[] doFinal = cipher.doFinal(bytes);

                return Base64.getEncoder().encodeToString(doFinal);

            } catch (Exception e) {

                throw new RuntimeException(e);

            }

        }

        /**

         * @description: 对AES加密字符串进行解密

         * @author: maojialong

         * @date: 2017年11月7日 上午10:14:00

         * @param str

         * @return

         */

        public static String getDecryptString(String str) {

            try {

                byte[] bytes = Base64.getDecoder().decode(str);

                Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);

                cipher.init(Cipher.DECRYPT_MODE, key);

                byte[] doFinal = cipher.doFinal(bytes);

                return new String(doFinal, CHARSETNAME);

            } catch (Exception e) {

                throw new RuntimeException(e);

            }

        }

    }

.自定义配置文件解析类

    import java.util.List;

    import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;

    /**

     * @description: 自定义AES解密

     * @author: maojialong

     * @date: 2017年11月7日 上午10:26:50

     */

    public class EncodeAESPlaceholderConfigurer extends PropertyPlaceholderConfigurer {

        private List<String> encodeProperties;

        /**

         * @description: 重写convertProperty方法，通过encodeProperties判断是否是经过AES加密

         * @author: maojialong

         * @date: 2017年11月7日 上午10:27:24

         * @param propertyName

         * @param propertyValue

         * @return

         * @see org.springframework.beans.factory.config.PropertyResourceConfigurer#convertProperty(java.lang.String, java.lang.String)

         * TODO

         */

        @Override

        protected String convertProperty(String propertyName, String propertyValue) {

            if(encodeProperties != null && encodeProperties.contains(propertyName)) {

                propertyValue = AESUtils.getDecryptString(propertyValue);

            }

            return super.convertProperty(propertyName, propertyValue);

        }

        public List<String> getEncodeProperties() {

            return encodeProperties;

        }

        public void setEncodeProperties(List<String> encodeProperties) {

            this.encodeProperties = encodeProperties;

        }

    }

.配置文件中加载配置文件

    <!-- 自定义AES加密解密 -->

    <bean id="propertyConfigurer" class="util.EncodeAESPlaceholderConfigurer">

        <!-- 配置文件地址 -->

        <property name="locations">

            <list>

                <value>classpath:conf/jdbc.properties</value>

                <value>classpath:redis.properties</value>

            </list>

        </property>

        <!-- 配置需要解密的配置项 -->

        <property name="encodeProperties">

            <array>

                <value>jdbc.url</value>

                <value>jdbc.username</value>

                <value>jdbc.password</value>

            </array>

        </property>

    </bean>