org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [spring/spring-dao.xml]: Invocation of init method failed; nested exception is org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 29; 文档根元素 "configuration" 必须匹配 DOCTYPE 根 "null"。
<?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: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"
default-lazy-init="false">
<!--配置整合mybatis过程-->
<!--1:配置数据库相关参数properties的属性: ${url}-->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!--2:数据库连接池-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<!-- 配置连接池属性-->
<property name="driverClass" value="${driver}"/>
<property name="jdbcUrl" value="${url}"/>
<property name="user" value="${username}"/>
<property name="password" value="${password}"/>
<!-- c3p0连接池的私有属性 -->
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" value="10"/>
<!--关闭连接后不自动commit-->
<property name="autoCommitOnClose" value="false"/>
<!--获取连接超时时间-->
<property name="checkoutTimeout" value="1000"/>
<!--获取连接失败重试次数-->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!--约定大于配置-->
<!--3:配置SqlSessionFactory对象-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--注入数据库连接池-->
<property name="dataSource" ref="dataSource"/>
<!-- 配置MyBatis全局配置文件:mybatis-config.xml-->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
<!--扫描entity包 使用别名 org.seckill.entity.Seckill Seckill-->
<property name="typeAliasesPackage" value="org.seckill.entity"/>
<!--扫描sql配置文件:mapper需要的xml文件-->
<property name="mapperLocations" value="classpath:mapper/*.xml"/>
</bean>
<!-- 4:配置扫描Dao接口包 动态实现Dao接口 注入到spring容器中-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 注入sqlSessionFactory-->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!--给出需要扫描Dao接口包-->
<property name="basePackage" value="org.seckill.dao"/>
</bean>
</beans>
没有找到 对应的bean 看文件xml 配置