spring加载properties配置文件

Spring框架与配置解析

最新推荐文章于 2025-12-01 13:49:36 发布

原创最新推荐文章于 2025-12-01 13:49:36 发布 · 143 阅读

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本文深入探讨了Spring框架的组件扫描、属性注入等核心配置，包括如何通过XML配置文件实现属性的灵活读取与注入，以及如何利用PropertiesFactoryBean进行配置文件的加载与使用。

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:util="http://www.springframework.org/schema/util"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:jee="http://www.springframework.org/schema/jee" xmlns:xsd="http://www.w3.org/2001/XMLSchema"
	xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/util
        http://www.springframework.org/schema/util/spring-util-3.0.xsd
        http://www.springframework.org/schema/jee
        http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"
    
     >
        
   
      
     <context:component-scan base-package="com.letv.mytest"></context:component-scan>
     
      
     	<context:property-placeholder location="classpath:spring-test.properties"   ignore-resource-not-found="true"   file-encoding="UTF-8" />
 
     
<!--   这个配置和上面context:property-placeholder 配置一样，可以在配置文件中读出properties配置中的值
      
         <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  
        <property name="locations">  
            <value>classpath:spring-test.properties</value>  
        </property>  
        <property name="systemPropertiesMode">  
            <value>1</value>  
        </property>  
        <property name="searchSystemEnvironment">  
            <value>true</value>  
        </property>  
        <property name="ignoreUnresolvablePlaceholders">  
            <value>true</value>  
        </property>  
    </bean>  
        -->
        
        <!--  这个配置可以直接给bean赋值     @Value("#{appProperties['ad.name']}") -->
         <bean id="appProperties" class="org.springframework.beans.factory.config.PropertiesFactoryBean">
  		<property name="ignoreResourceNotFound" value="true" />
  		<property name="fileEncoding"  value="UTF-8"  />
  		<property name="locations">
    		<list>
      			<value>classpath:spring-test.properties</value>
    		</list>
  		</property>
	</bean>
  
     <bean id="myBean" class=" com.letv.mytest.model.User">  
        <property name="name"><value>${name}</value></property>  
<property name="age"><value>${age}</value></property>  
    </bean> 
    </beans>