spring配置文件加密

通過繼承spring配置類并重寫處理方法實現密文解密    

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

    @Override
    protected void processProperties(ConfigurableListableBeanFactory beanFactory,
            Properties props) throws BeansException {
        try {
        for (int i = 0;i<encryptPropNames.length;i++){
             String value = props.getProperty(encryptPropNames[i]);
             if (value != null) {
                    props.setProperty(encryptPropNames[i],new String(DES.decrypt(new BASE64Decoder().decodeBuffer(value), "解密秘鑰")));
             }

        }
        super.processProperties(beanFactory, props);
        } catch (Exception e) {
             e.printStackTrace();
             throw new BeanInitializationException(e.getMessage());
        }
    }  
}

配置applicationContext.xml文件，并在jdbc.properties中設置密文（根據解密秘鑰生成）    

<!-- class填寫剛才那段代碼的類路徑-->
<bean id="propertyConfigurer" class="com.**.EncryptPropertyPlaceholderConfigurer">  
            <property name="locations">
                <list>
                    <value>classpath:jdbc.properties</value>
                </list>
            </property>
    </bean>