package com.light.ac.common.configuration; import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer; import com.light.ac.common.util.DESUtil; public class EncryptPropertyPlaceholderConfigurer extends PropertyPlaceholderConfigurer { // 需要解密的字段 private String[] encryptPropNames = { "jdbc.username", "jdbc.password" }; @Override protected String convertProperty(String propertyName, String propertyValue) { if (isEncryptProp(propertyName)) { String decryptValue = DESUtil.getDecryptString(propertyValue); return decryptValue; } else { return propertyValue; } } private boolean isEncryptProp(String propertyName) { for (String encryptpropertyName : encryptPropNames) { if (encryptpropertyName.equals(propertyName)) return true; } return false; } }
<bean class="com.light.ac.common.configuration.EncryptPropertyPlaceholderConfigurer"> <property name="locations"> <list> <value>classpath:db.properties</value> </list> </property> <property name="fileEncoding" value="UTF-8"/> </bean>
jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://127.0.0.1:3306/authority-control?characterEncoding=utf-8&allowMultiQueries=true&serverTimezone=UTC jdbc.username=WnplV/ietfQ= jdbc.password=WnplV/ietfQ=
package com.light.ac.common.util; import java.security.Key; import java.security.SecureRandom; import javax.crypto.Cipher; import javax.crypto.KeyGenerator; import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder; public class DESUtil { private static Key key; private static String KEY_STR = "myKey"; private static String CHARSETNAME = "UTF-8"; private static String ALGORITHM = "DES"; static { try { KeyGenerator generator = KeyGenerator.getInstance(ALGORITHM); SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG"); secureRandom.setSeed(KEY_STR.getBytes()); generator.init(secureRandom); key = generator.generateKey(); generator = null; } catch (Exception e) { throw new RuntimeException(e); } } /** * 加密 * @param str * @return */ public static String getEncryptString(String str) { BASE64Encoder base64encoder = new BASE64Encoder(); try { byte[] bytes = str.getBytes(CHARSETNAME); Cipher cipher = Cipher.getInstance(ALGORITHM); cipher.init(Cipher.ENCRYPT_MODE, key); byte[] doFinal = cipher.doFinal(bytes); return base64encoder.encode(doFinal); } catch (Exception e) { // TODO: handle exception throw new RuntimeException(e); } } /** * 解密 * @param str * @return */ public static String getDecryptString(String str) { BASE64Decoder base64decoder = new BASE64Decoder(); try { byte[] bytes = base64decoder.decodeBuffer(str); Cipher cipher = Cipher.getInstance(ALGORITHM); cipher.init(Cipher.DECRYPT_MODE, key); byte[] doFinal = cipher.doFinal(bytes); return new String(doFinal, CHARSETNAME); } catch (Exception e) { throw new RuntimeException(e); } } public static void main(String[] args) { System.out.println(getEncryptString("root")); System.out.println(getEncryptString("tiger")); System.out.println(getDecryptString("WnplV/ietfQ=")); System.out.println(getDecryptString("xyHEykQVHqA=")); } }