spring jdbc配置文件加密解密

例子如下：

#加密前
#datasource.type=mysql
#datasource.driverClassName=com.mysql.jdbc.Driver
#datasource.url=jdbc:mysql://localhost:3306/xxx?useUnicode=true&characterEncoding=utf8
#datasource.username=root
#datasource.password=root
#加密后
datasource.type=2DF0ADA00FAA99D2
datasource.driverClassName=DFB084E48D901F11SDQXB6DEEEA685621CEAB85E65590
datasource.url=CD1E7D3A7DEED845CC284EB8AB50F88E1XCXC2E87A3F36434640EA07523DB201ACF884EF00CBBAD67FB52A04960D6C3E91E3EABF370CE3E6FACD06915D92108869CBB9
datasource.username=63AEB7FA5F01BC70
datasource.password=63AEB7FA5F01BC70

<!-- 对JDBC配置进行解密  --> <bean id="propertyConfigurer" class="xxx.security.EncryptablePropertyPlaceholderConfigurer">  <property name="locations"><list><value>classpath:conf/jdbc.properties</value><value>classpath:conf/memcache.properties</value></list></property></bean><bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"destroy-method="close" ><property name="driverClass"><value>${datasource.driverClassName}</value></property><property name="jdbcUrl"><value>${datasource.url}</value></property><property name="user"><value>${datasource.username}</value></property><property name="password"><value>${datasource.password}</value></property><property name="minPoolSize"><value>${datasource.c3p0.minPoolSize}</value></property><property name="maxPoolSize"><value>${datasource.c3p0.maxPoolSize}</value></property><property name="maxIdleTime"><value>${datasource.c3p0.maxIdleTime}</value></property><property name="acquireIncrement"><value>${datasource.c3p0.acquireIncrement}</value></property><property name="maxStatements"><value>${datasource.c3p0.maxStatements}</value></property><property name="initialPoolSize"><value>${datasource.c3p0.initialPoolSize}</value></property><property name="idleConnectionTestPeriod"><value>${datasource.c3p0.idleConnectionTestPeriod}</value></property><property name="numHelperThreads"><value>${datasource.c3p0.numHelperThreads}</value></property><property name="acquireRetryAttempts"><value>${datasource.c3p0.acquireRetryAttempts}</value></property><property name="breakAfterAcquireFailure"><value>${datasource.c3p0.breakAfterAcquireFailure}</value></property><property name="testConnectionOnCheckout"><value>${datasource.c3p0.testConnectionOnCheckout}</value></property></bean>

JAVA类加密，解密类如下：

import java.util.Properties;import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanInitializationException;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;import cn.com.dbappsecurity.common.utils.DesEncrypt;
import cn.com.dbappsecurity.common.utils.MyWebConstant;public class EncryptablePropertyPlaceholderConfigurer extends PropertyPlaceholderConfigurer {private static final String key = MyWebConstant.JDBC_DESC_KEY;protected void processProperties(ConfigurableListableBeanFactory beanFactory, Properties props)throws BeansException {try {
//                DesEncrypt des = new DesEncrypt();String username = props.getProperty(MyWebConstant.JDBC_DATASOURCE_USERNAME_KEY);if (username != null) {props.setProperty(MyWebConstant.JDBC_DATASOURCE_USERNAME_KEY, DesEncrypt.Decrypt(username, DesEncrypt.hex2byte(key)));}String password = props.getProperty(MyWebConstant.JDBC_DATASOURCE_PASSWORD_KEY);if (password != null) {props.setProperty(MyWebConstant.JDBC_DATASOURCE_PASSWORD_KEY, DesEncrypt.Decrypt(password, DesEncrypt.hex2byte(key)));}String url = props.getProperty(MyWebConstant.JDBC_DATASOURCE_URL_KEY);if (url != null) {props.setProperty(MyWebConstant.JDBC_DATASOURCE_URL_KEY, DesEncrypt.Decrypt(url, DesEncrypt.hex2byte(key)));}String driverClassName = props.getProperty(MyWebConstant.JDBC_DATASOURCE_DRIVERCLASSNAME_KEY);if(driverClassName != null){props.setProperty(MyWebConstant.JDBC_DATASOURCE_DRIVERCLASSNAME_KEY, DesEncrypt.Decrypt(driverClassName, DesEncrypt.hex2byte(key)));}String dbtype = props.getProperty(MyWebConstant.JDBC_DATASOURCE_TYPE_KEY);if(dbtype != null){props.setProperty(MyWebConstant.JDBC_DATASOURCE_TYPE_KEY, DesEncrypt.Decrypt(dbtype, DesEncrypt.hex2byte(key)));}super.processProperties(beanFactory, props);} catch (Exception e) {e.printStackTrace();throw new BeanInitializationException(e.getMessage());}}}