生產環境c3p0數據源用戶名密碼加密或解密

直接上代碼，相信大部分人能看懂

Spring applicationContext.xml

 <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
        <property name="properties">  
          <bean class="cn.oa.util.C3P0DatasourcePropertiesFactory" factory-method="getProperties">
                <constructor-arg type="java.lang.String">
                    <value>${jdbc.password}</value>
                </constructor-arg>
                <!-- 生產環境模式 ，才特殊處理加密密碼-->  
                <constructor-arg type="java.lang.String">
                    <value>${jdbc.password.encrypted}</value>
                </constructor-arg>
        	</bean>
   		</property>
        <property name="driverClass" value="${jdbc.driverClassName}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.userName}"/>
        <!-- <property name="password" value="${jdbc.password}"/> -->
       	<property name="initialPoolSize" value="10"/>
        <property name="maxPoolSize" value="${db.pool.maxpoolsize}"/>
        <property name="minPoolSize" value="${db.pool.minpoolsize}"/>
        <property name="acquireIncrement" value="5"/>  <!--當連接池中的連接耗盡的時候c3p0一次同時獲取的連接數。 -->
        
        <property name="idleConnectionTestPeriod" value="60"/><!--每30秒檢查所有連接池中的空閒連接。--> 
    </bean>

注意，這裏有個先後順序的問題,<property name="properties"> 必須要在前面

import java.util.Properties;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import cn.biznest.mediacircle.util.encrypt.CryptoUtil;

public class C3P0DatasourcePropertiesFactory {
	private static final String PRODUCTION_MODE = "true";
	private static final String PROP_PASSWORD = "password";
	private final static Logger logger = LoggerFactory.getLogger(C3P0DatasourcePropertiesFactory.class);

	public static Properties getProperties(String pwd, String production) throws Exception {
		Properties p = new Properties();

		if (PRODUCTION_MODE.equals(production)) {
			try {
				p.setProperty(PROP_PASSWORD, CryptoUtil.decode(pwd));//解密操作

			 catch (Exception e) {
				logger.error("C3P0DatasourcePropertiesFactory getProperties is error!", e);
				throw e;
			}
		}else{
			p.setProperty(PROP_PASSWORD, pwd);
		}
		return p;
	}
}