Spring PropertyPlaceHolderConfigure未将属性值传递给bean

我有一个非常简单的要求，它已经变得复杂，我花了一天时间在它上面，没有任何运气。我有一个名为

jdbc.properties

的属性文件，其中包含数据库连接详细信息。我需要使用属性文件中的值创建一个数据源连接。当前未传递属性值，导致数据库连接错误消息。如果我对bean中的属性值进行硬编码，它就会工作。我的spring配置文件

myBatis.DataSource.config.xml

如下所示

<?xml version="1.0" encoding="UTF-8"?>
<beans default-lazy-init="true"
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
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">
    <bean id="newProperty"    
    class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" lazy-  
    init="true">
        <property name="locations" value="jdbc.properties.${env}"/>
    </bean>
    <bean id="newDataSource"  class="org.apache.commons.dbcp.BasicDataSource" depends-
    on="newProperty" destroy-method="close">
        <property name="username" value="${DBUSER}" />
        <property name="password" value="${DBPASSWORD}" />
        <property name="url" value="${DBURL}" />
        <property name="driverClassName" value="${DRIVER}" />
        <property name="poolPreparedStatements" value="false" />
        <property name="defaultAutoCommit" value="false" />
        <property name="testOnBorrow" value="true" />
        <property name="testOnReturn" value="true" />
        <property name="testWhileIdle" value="true" />
        <property name="defaultTransactionIsolation" value="2" />
        <property name="timeBetweenEvictionRunsMillis" value="10000" />
    </bean>
    <bean id="sqlSessionFactory"   class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="configLocation"   
      value="com/automation/config/oneValidation-config.xml" />
        <property name="dataSource" ref="newDataSource" />
    </bean>
    <bean  class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactory" ref="sqlSessionFactory" />
        <property name="basePackage" value="com.automation.config" />
    </bean>
</beans>

我得到的错误如下所示，原因是没有从属性文件jdbc.properties检索

${DBUSER}

，

${DBPASSWORD}

字段：

org.apache.ibatis.exceptions.PersistenceException: 
### Error querying database.  Cause:                       
org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC 
Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot 
create PoolableConnectionFactory (JZ00L: Login failed.  Examine the SQLWarnings chained 
to this exception for the reason(s).)

试试这个：

<property name="locations" value="classpath:/yourFolderName/jdbc.properties"/>

---

我也运行过这个。在mybatis文档中，我找到了发生这种情况的原因

来源：“注意sqlSessionFactoryBean和sqlSessionTemplateBean属性是MyBatis Spring 1.0.2之前可用的唯一选项，但鉴于MapperScannerConfigure在启动过程的早期运行，PropertyPlaceHolderConfigure经常出现错误。为此，已弃用属性，建议使用新属性sqlSessionFactoryBeanName和sqlSessionTemplateBeanName

尝试将MapperScannerConfigurer bean从

<bean  class="org.mybatis.spring.mapper.MapperScannerConfigurer">  
    <property name="sqlSessionFactory" ref="sqlSessionFactory" />
    <property name="basePackage" value="com.automation.config" />  
</bean>

到

嗨，Alex，我刚开始是这样做的，当它不起作用时，我改为上面的。@Vinod Madan试图删除

lazy init=“true”

。删除了lazy init。仍然没有运气

<bean  class="org.mybatis.spring.mapper.MapperScannerConfigurer">  
    <property name="sqlSessionFactory" ref="sqlSessionFactory" />
    <property name="basePackage" value="com.automation.config" />  
</bean>

<bean  class="org.mybatis.spring.mapper.MapperScannerConfigurer">  
    <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
    <property name="basePackage" value="com.automation.config" />  
</bean>