spring2 配置文件
Java代码 
<?xml version="1.0"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<!-- 数据源配置 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="driverClass">
<value>oracle.jdbc.driver.OracleDriver</value>
</property>
<property name="jdbcUrl" value="jdbc:oracle:thin:@IP:端口:SID" />
<property name="acquireIncrement" value="1"/>
<property name="idleConnectionTestPeriod" value="300"/>
<property name="maxPoolSize" value="5"/>
<property name="minPoolSize" value="1"/>
<property name="initialPoolSize" value="1" />
<property name="numHelperThreads" value="3"/>
<property name="maxIdleTime" value="1200" />
<property name="acquireRetryAttempts" value="2"/>
<property name="preferredTestQuery" value=" select 1 from dual "/>
<property name="testConnectionOnCheckin" value="true"/>
[color=red]<property name="properties" ref="dataSourceProperties"/>[/color]
</bean>
<bean id="dataSourceProperties" class="PropertiesEncryptFactoryBean">
<property name="properties">
<props>
<prop key="user">xxxx加密后</prop>
<prop key="password">xxxxxxx加密后</prop>
</props>
</property>
</bean>
Java代码
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);
}
//简单加密
private String deEncryptString(String originalString){
StringBuilder newString = new StringBuilder();
for (int i = 0; i < originalString.length(); i++) {
char eachChar= originalString.charAt(i);
char newChar = (char)(eachChar + i);
newString.append(newChar);
}
return newString.toString();
}
}