jdbc.init无法解析

org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'dataSource' defined in class path resource [spring-dao.xml]: Could not resolve placeholder 'jdbc.init' in value "${jdbc.init}"; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'jdbc.init' in value "${jdbc.init}"

网上的解决办法是：导入mybatis依赖，这个之前就导过了，又说降版本，降版本后，还是没有解决，最新版本也是没有解决，这个问题

<?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:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">
    <!--关联数据库配置文件-->
    <!--读取jdbc.properties配置文件参数化-->
   <context:property-placeholder location="classpath:jdbc.properties"/>
    <!--连接池-->
    <!--集成Druid连接池-->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <!--基本配置-->
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>

        <!--配置初始化大小，最大，最小-->
        <property name="initialSize" value="${jdbc.init}"/>
        <property name="minIdle" value="${jdbc.minIdle}"/>
        <property name="maxActive" value="${jdbc.maxActive}"/>