Java 无法解析字符串值中的占位符

我正在尝试使用.properties文件中的属性，但无效。 我得到了这个错误：

2017-03-03 11:33:22,893 [localhost-startStop-1] []                                ERROR org.springframework.web.context.ContextLoader Context initialization failed
org.springframework.beans.factory.BeanDefinitionStoreException: 
Invalid bean definition with name 'sessionFactoryInit' 
defined in URL [jar:file:/C:/dev/Escale/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/hx_u4WebServices/WEB-INF/lib/hx_u4Persistence.jar!/META-INF/applicationContext-hibernate-init.xml]: 
Could not resolve placeholder 'ipon.hibernate.show_sql' in string value "${ipon.hibernate.show_sql}"

你能帮我吗

applicationContext-hibernate-config.xml

<?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:tx="http://www.springframework.org/schema/tx"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
                    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

        <bean id="sessionFactoryInit" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" abstract="true">
            <property name="dataSource">
                <ref bean="dataSource" />
            </property>
            <property name="hibernateProperties">
                <props>
                    <prop 

key="hibernate.dialect">fr.laposte.courrier.escale.ipon.persistence.dialect.SpecificOracleDialect</prop>
                <prop key="hibernate.bytecode.use_reflection_optimizer">true</prop>
                <prop key="hibernate.show_sql">${ipon.hibernate.show_sql}</prop>
                <prop key="hibernate.max_fetch_depth">${ipon.hibernate.max_fetch_depth}</prop>
                <prop key="hibernate.jdbc.fetch_size">${ipon.hibernate.jdbc.fetch_size}</prop>
                <prop key="hibernate.jdbc.batch_size">${ipon.hibernate.jdbc.batch_size}</prop>
                <prop key="hibernate.jdbc.use_get_generated_keys">true</prop>
                <prop key="hibernate.cache.use_second_level_cache">false</prop>
                <prop key="hibernate.cache.use_query_cache">false</prop>
                <prop key="hibernate.cache.provider_class">org.hibernate.cache.NoCacheProvider</prop>       
                <prop key="hibernate.generate_statistics">${ipon.hibernate.generate_statistics}</prop>
            </props>
        </property>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:jsp="http://java.sun.com/xml/ns/javaee/jsp" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID"
    version="2.5">

    <display-name>iponServices</display-name>

    <context-param>
        <param-name>webAppRootKey</param-name>
        <param-value>iponServices.root</param-value>
    </context-param>

    <context-param>
        <param-name>logbackConfigLocation</param-name>
        <param-value>file:${IPONN}/config/log.xml</param-value>
    </context-param>

iPonService
WebApprotKey
iponServices.root
logbackConfigLocation
文件：${IPONN}/config/log.xml

Tomcat7（eclipse）中的VM参数

-DIPONN=“C:/dev/Escale/u4/Sources/livraison/conf/IPON”

---

提前感谢您的帮助。

我认为您缺少上下文中的属性占位符bean：

<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location">
    <value>file:${IPONN}/config/ipon.properties</value>
</property>

文件：${IPONN}/config/ipon.properties

---

感谢您的回复。您可以将其添加到应用程序上下文-hibernate-config.xml中

<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location">
    <value>file:${IPONN}/config/ipon.properties</value>
</property>