Java encryption AES algorithm and application in spring

Just put the code straight.

1.    Aesutil Encryption and Decryption tool class import Java.security.Key;    Import Java.security.SecureRandom;    Import java.util.Base64;    Import Javax.crypto.Cipher;    Import Javax.crypto.KeyGenerator; /** * @description: AES Encryption Tool class * @author: Maojialong * @date: November 7, 2017 morning 10:11:02*/     Public classAesutils {//Instantiate a key        Private Statickey key; //Original Key        Private StaticString Key_str ="my-springmvc-2017-11-07"; //Coding        Private StaticString CharsetName ="UTF-8"; //Cryptographic key Algorithm        Private StaticString Key_algorithm ="AES"; //Encryption-Decryption algorithm/working mode/Fill Method        Private StaticString Cipher_algorithm ="aes/ecb/pkcs5padding"; /** * Initialize 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 NewRuntimeException (e); }        }                /** * @description: AES symmetric encrypted string and converted to ASCII with Base64 from JDK * @author: Administrator * @date: November 2017 7th Morning 9:37:48 * @param str * @return*/         Public Staticstring 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); returnBase64.getencoder (). encodetostring (dofinal); } Catch(Exception e) {Throw NewRuntimeException (e); }        }             /** * @description: Decrypt AES Encrypted String * @author: Maojialong * @date: November 7, 2017 10:14:00 * @param str * @return*/         Public Staticstring 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 NewString (dofinal, CharsetName); } Catch(Exception e) {Throw NewRuntimeException (e); }        }    }2. Custom profile parsing class import java.util.List;    Import Org.springframework.beans.factory.config.PropertyPlaceholderConfigurer; /** * @description: Custom AES Decryption * @author: Maojialong * @date: November 7, 2017 morning 10:26:50*/     Public classEncodeaesplaceholderconfigurer extends Propertyplaceholderconfigurer {PrivateList<string>encodeproperties; /** * @description: Override Convertproperty method, encodeproperties to determine if AES is encrypted * @author: Maojialong *  @date: November 7, 2017 morning 10:27:24 * @param propertyname * @param propertyvalue * @return * @see Org.springframework.beans.factory.config.propertyresourceconfigurer#convertproperty (Java.lang.String, java.lang.String) * TODO*/@Overrideprotectedstring Convertproperty (String propertyname, String propertyvalue) {if(Encodeproperties! =NULL&&Encodeproperties.contains (PropertyName)) {PropertyValue=aesutils.getdecryptstring (PropertyValue); }            returnSuper.convertproperty (PropertyName, PropertyValue); }         PublicList<string>getencodeproperties () {returnencodeproperties; }         Public voidSetencodeproperties (list<string>encodeproperties) {             This. encodeproperties =encodeproperties; }    }3To load a configuration file in a configuration file<!--custom AES Encryption decryption--<bean id="Propertyconfigurer" class="util. Encodeaesplaceholderconfigurer"> <!--profile Address--<property name="Locations"> <list> <value>classpath:conf/jdbc.properties</value> <v Alue>classpath:redis.properties</value> </list> </property> <!--configuration requires a decryption of the Set items--<property name="encodeproperties"> <array> <value>jdbc.url</value> <value>jdbc.username    </value> <value>jdbc.password</value> </array> </property> </bean>

Java encryption AES algorithm and application in spring