spring配置文件加密(未测试)

通过继承spring配置类并重写处理方法实现密文解密    

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), "解密秘钥")));
}

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

配置applicationContext.xml文件，并在jdbc.properties中设置密文（根据解密秘钥生成）    

<!-- class填写刚才那段代码的类路径-->
<bean id="propertyConfigurer" class="com.**.EncryptPropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:jdbc.properties</value>
</list>
</property>
</bean>