空指针异常
<?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:tx="http://www.springframework.org/schema/tx"
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-util.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 引入外部属性文件 -->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- 配置c3p0的连接池 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.user}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!-- 配置业务类 -->
<bean id="accountService" class="com.demo.AccountServiceInpl">
<property name="accountDao" ref="accountDao"/>
<context:component-scan base-package="com.demo"/>
</bean>
<!-- 配置dao类 -->
<bean id="accountDao" class="com.demo.AccountDaoImpl">
<property name="dataSource" ref="dataSource"></property>
</bean>配置文件如上图 不知道问题在哪
不知道空指针发生在哪 代码应该没问题
