Spring 在配置中使用*.properties

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="https://www.springframework.org/schema/beans"
    xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance" 
    xmlns:context="https://www.springframework.org/schema/context"
    xmlns:util="https://www.springframework.org/schema/util"
    xsi:schemaLocation="https://www.springframework.org/schema/beans   
            https://www.springframework.org/schema/beans/spring-beans-3.0.xsd  
            https://www.springframework.org/schema/context  
            https://www.springframework.org/schema/context/spring-context-3.0.xsd
            https://www.springframework.org/schema/util 
            https://www.springframework.org/schema/util/spring-util-3.0.xsd">
    <context:annotation-config/>
    <!-- picks up and registers AppConfig as a bean definition -->
    <context:component-scan base-package="com.web.spring.other" />
    
    <bean class="com.web.spring.other.AppConfig"/>
	办法一
    <context:property-placeholder location="classpath:jdbc.properties" />
    办法二
    <util:properties id="jdbcProperties" location="classpath:jdbc.properties"/>
</beans><?xml version="1.0" encoding="UTF-8"?>
<beans