Spring中使用@Value注解注入属性文件中的值详解

<?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:jaxws="http://cxf.apache.org/jaxws" xmlns:jee="http://www.springframework.org/schema/jee"
      xmlns:aop="http://www.springframework.org/schema/aop"
      xmlns:context="http://www.springframework.org/schema/context"
      xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util"
      xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
       http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd
       http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd
       http://cxf.apache.org/bindings/soap http://cxf.apache.org/schemas/configuration/soap.xsd
       http://www.springframework.org/schema/context  http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">
   <util:properties id="configProperties" location="classpath:conf/setting.properties" />
</beans>

package com.teriste.other;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({ "classpath:conf/spring/spring-config-properties.xml"})
public class PropertiesTest {
    @Value("#{configProperties['secretAccessKey']}")
    private String secretAccessKey;
    public String getSecretAccessKey() {
        return secretAccessKey;
    }
    public void setSecretAccessKey(String secretAccessKey) {
        this.secretAccessKey = secretAccessKey;
    }
    @Test
    public void testGetProperties(){
        System.out.println("通过@Value注解注入属性文件中的值："+secretAccessKey);
    }
}