整合Spring和Mybatis 中org.springframework.beans.factory.BeanCreationException错误

这两天学习strut2和spring的整合，启动服务器后总是爆粗如下错误，

org.springframework.beans.factory.BeanCreationException: 

Error creating bean with name 'sqlSessionFactory' defined in URL [file:/E:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/StrutsTest/WEB-INF/classes/applicationContext.xml]: 

Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance.  Cause: org.xml.sax.SAXParseException:Document root element "mapper", must match DOCTYPE root "configuration".

网上有如下解答：

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Document root element "mapper", must match DOCTYPE root "configuration"
后来才发现，原来是xml文件的！doctype定义写错了。


mybatis.xml和mapper.xml都用了一个doctype


原来不是这样的。




mybatis.xml：


<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD  Config 3.0//EN"               
"http://mybatis.org/dtd/mybatis-3-config.dtd">


mapper.xml


<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">

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applicationContext.xml 示例如下

<?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"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsdhttp://www.springframework.org/schema/aop   http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">       <bean id="firstAction" class="com.hoperun.action.FirstAction" scope="prototype">    <property name="live" ref="live"/>    </bean>    <bean id="ajaxAction" class="com.hoperun.action.AjaxAction" scope="prototype"></bean>    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"><property name="driverClassName" value="com.mysql.jdbc.Driver"></property><property name="url" value="jdbc:mysql://localhost:3306/test"></property><property name="username" value="root"></property>  <property name="password" value="123"></property>            </bean>     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">        <property name="configLocation" value="classpath:Configuration.xml"></property>        <property name="dataSource" ref="dataSource"></property>    </bean></beans>    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">        <property name="configLocation" value="classpath:Configuration.xml"></property>        <property name="dataSource" ref="DBPoolDataSource"></property>    </bean></beans>

userMap.xml 示例：

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE configurationPUBLIC "-//mybatis.org//DTD Config 3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd"><mapper namespace="com.hoperun">   <select id="selectUser" parameterType="int"       resultType="com.hoperun.bean.User">       select         *        from         student       where         id = #{Id}   </select></mapper>