Spring加载加密的配置文件详解

public class EncryptPropertyPlaceholderConfigurer extends PropertyPlaceholderConfigurer { //指定需要加密的属性 private String[] propertyNames = {"db.password"};  @Override protected String convertProperty(String propertyName, String propertyValue) {  //过滤出需要解密的属性  for (String p : propertyNames) {   if (p.equalsIgnoreCase(propertyName)) {    try {     //返回AES解密后的字符串     return new String(SymmetricCryptoUtil.decryptAESWithDefaultKey(EncodeUtil.decodeBase64(propertyValue)));    } catch (Exception e) {     e.printStackTrace();    }   }  }  return super.convertProperty(propertyName, propertyValue); }}