Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'url' in value "${url}"

最新推荐文章于 2022-08-28 11:15:36 发布

原创最新推荐文章于 2022-08-28 11:15:36 发布 · 1.7k 阅读

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#spring

本文详细解析了在Spring框架中因属性占位符配置不当导致的IllegalArgumentException异常，并提供了具体的解决方案，包括调整配置文件的引用方式和位置，确保属性正确加载。

记录一个错

Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'url' in value "${url}"

发生错误原因

applicationContext-dataSource.xml中引入配置

 <context:property-placeholder location="classpath:jdbc.properties"/>

applicationContext.xml中配置

    <import resource="applicationContext-datasource.xml"/>
<!--    <import resource="applicationContext-dubbo.xml"/>-->
<!--    <import resource="applicationContext-apollo.xml"/>-->
<!--    <import resource="applicationContext-rpc.xml"/>-->
    <context:property-placeholder location="classpath:config.properties"/>
    <context:component-scan base-package="com.travel.background.Configuration"/>
    <bean class="com.travel.background.Configuration.ConfigurationBeanTest">
        <property name="url" value="${url}"/>
        <property name="path" value="${path}"/>
    </bean>

将配置改为

删除applicationContext-dataSource.xml中引入配置的代码
在applicationContext.xml中修改配置

    <import resource="applicationContext-datasource.xml"/>
    <import resource="applicationContext-dubbo.xml"/>
    <import resource="applicationContext-apollo.xml"/>
    <import resource="applicationContext-rpc.xml"/>
    <context:property-placeholder location="classpath:config.properties,classpath:jdbc.properties"/>
    <context:component-scan base-package="com.travel.background.Configuration"/>
    <bean class="com.travel.background.Configuration.ConfigurationBeanTest">
        <property name="url" value="${url}"/>
        <property name="path" value="${path}"/>
    </bean>