一、cn.com.encrypt.java
package cn.com.encrypt; import java.io.ByteArrayOutputStream; import java.util.Properties; import javax.crypto.Cipher; import org.springframework.beans.factory.FactoryBean; import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder; public class DBEncrypt implements FactoryBean { private Properties properties; public Object getObject() throws Exception { return getProperties(); } public Class getObjectType() { return java.util.Properties.class; } public boolean isSingleton() { return true; } public Properties getProperties() { return properties; } public void setProperties(Properties inProperties) { this.properties = inProperties; String originalUsername = properties.getProperty("user"); String originalPassword = properties.getProperty("password"); if (originalUsername != null) { String newUsername = deEncryptUsername(originalUsername); properties.put("user", newUsername); } if (originalPassword != null) { String newPassword = deEncryptPassword(originalPassword); properties.put("password", newPassword); } } private String deEncryptUsername(String originalUsername) { return dCode(originalUsername.getBytes()); } private String deEncryptPassword(String originalPassword) { return dCode(originalPassword.getBytes()); } public String eCode(String needEncrypt) { byte result[] = null; try { Cipher enCipher = Cipher.getInstance("DES"); javax.crypto.SecretKey key = Key.loadKey(); enCipher.init(1, key); result = enCipher.doFinal(needEncrypt.getBytes()); BASE64Encoder b = new BASE64Encoder(); ByteArrayOutputStream bos = new ByteArrayOutputStream(); b.encode(result, bos); result = bos.toByteArray(); } catch (Exception e) { throw new IllegalStateException( "System doesn't support DES algorithm."); } return new String(result); } public String dCode(byte result[]) { String s = null; try { Cipher deCipher = Cipher.getInstance("DES"); deCipher.init(2, Key.loadKey()); BASE64Decoder d = new BASE64Decoder(); result = d.decodeBuffer(new String(result)); byte strByte[] = deCipher.doFinal(result); s = new String(strByte); } catch (Exception e) { throw new IllegalStateException( "System doesn't support DES algorithm."); } return s; } public static void main(String[] args) { String s = "test"; DBEncrypt p = new DBEncrypt(); String afterE = p.eCode(s); System.out.println("after:"+afterE);//这里是加密后的字符 System.out.println("before:"+p.dCode(afterE.getBytes())); } }
二、cn.com.encrypt.Key.java
package cn.com.encrypt; import javax.crypto.SecretKey; import javax.crypto.SecretKeyFactory; import javax.crypto.spec.DESKeySpec; import sun.misc.BASE64Decoder; public class Key { private static String encryptKey = "7EV/Zzutjzg="; public Key() { } public static SecretKey loadKey() throws Exception { BASE64Decoder d = new BASE64Decoder(); byte b[] = d.decodeBuffer(encryptKey); DESKeySpec dks = new DESKeySpec(b); SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES"); return keyFactory.generateSecret(dks); } }
三、cn.com.encrypt.PropertiesEncryptFactoryBean.java
package cn.com.encrypt; import java.util.Properties; import org.springframework.beans.factory.FactoryBean; public class PropertiesEncryptFactoryBean implements FactoryBean { private Properties properties; public Object getObject() throws Exception { return getProperties(); } public Class getObjectType() { return java.util.Properties.class; } public boolean isSingleton() { return true; } public Properties getProperties() { return properties; } public void setProperties(Properties inProperties) { this.properties = inProperties; String originalUsername = properties.getProperty("user"); String originalPassword = properties.getProperty("password"); if (originalUsername != null) { String newUsername = deEncryptUsername(originalUsername); properties.put("user", newUsername); } if (originalPassword != null) { String newPassword = deEncryptPassword(originalPassword); properties.put("password", newPassword); } } private String deEncryptUsername(String originalUsername) { return deEncryptString(originalUsername); } private String deEncryptPassword(String originalPassword) { return deEncryptString(originalPassword); } private String deEncryptString(String originalString) { return new DBEncrypt().dCode(originalString.getBytes()); } }
四、config.properties
CHECK_ST_ORL_URL=jdbc:oracle:thin:@127.0.0.1:1521:rac
CHECK_ST_ORL_USER=qBEWE7vGhBs=
CHECK_ST_ORL_PASSWD=qBEWE7vGhBs=
CHECK_ST_ORL_driverClassName=oracle.jdbc.driver.OracleDriver
五、applicationContext.xml
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations"> <list> <value>/WEB-INF/classes/config.properties</value> </list> </property> </bean> <bean id="dataSourceOracle" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <property name="automaticTestTable" value="CONNECTION_TEST" /> <property name="testConnectionOnCheckout" value="true" /> <property name="acquireRetryAttempts" value="5" /> <property name="driverClass"> <value>${CHECK_ST_ORL_driverClassName}</value> </property> <property name="jdbcUrl"> <value>${CHECK_ST_ORL_URL}</value> </property> <property name="properties" ref="dataSourceProperties"/> <property name="minPoolSize"> <value>30</value> </property> <property name="maxPoolSize"> <value>100</value> </property> <property name="initialPoolSize"> <value>30</value> </property> <property name="maxConnectionAge"> <value>1800</value> </property> <property name="maxIdleTime"> <value>1800</value> </property> <property name="maxIdleTimeExcessConnections"> <value>300</value> </property> <property name="maxStatements"> <value>0</value> </property> <property name="testConnectionOnCheckin"> <value>false</value> </property> <property name="idleConnectionTestPeriod"> <value>900</value> </property> <property name="checkoutTimeout"> <value>1000</value> </property> </bean> <bean id="dataSourceProperties" class="cn.com.encrypt.PropertiesEncryptFactoryBean"> <property name="properties"> <props> <prop key="user">${CHECK_ST_ORL_USER}</prop> <prop key="password">${CHECK_ST_ORL_PASSWD}</prop> </props> </property> </bean>