jdbc.properties对用户名密码加密

 

工具类

public class DESUtils {

	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);
		}
	}

	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);
		}
	}


	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) {
			// TODO: handle exception
			throw new RuntimeException(e);
		}
	}
	
	public static void main(String[] args) {
		System.out.println(getEncryptString("root"));
		System.out.println(getDecryptString("WnplV/ietfQ="));
	}

}

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

public class EncryptPropertyPlaceholderConfigurer extends
		PropertyPlaceholderConfigurer {
	private String[] encryptPropNames = { "jdbc.username", "jdbc.password" };

	@Override
	protected String convertProperty(String propertyName, String propertyValue) {
		if (isEncryptProp(propertyName)) {
			String decryptValue = DESUtils.getDecryptString(propertyValue);
			return decryptValue;
		} else {
			return propertyValue;
		}
	}

	private boolean isEncryptProp(String propertyName) {
		for (String encryptpropertyName : encryptPropNames) {
			if (encryptpropertyName.equals(propertyName))
				return true;
		}
		return false;
	}
}

配置修改

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8
jdbc.username=WnplV/ietfQ=
jdbc.password=TdixoQRe6Y0=

bean修改 

 
    
        
            
                classpath:jdbc.properties