Cause: org.xml.sax.SAXParseException;columnNumber: 101; 必须为元素类型 "insert" 声明属性 "resultType

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> 
<!-- 加载外部配置文件 -->
<bean
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:jdbc.properties" />
</bean>
<bean id="DateSource" class="org.apache.commons.dbcp.BasicDataSource"
init-method="close" destroy-method="close">
<!-- 加载驱动 -->
<property name="driverClassName" value="${driver}" />
<!-- url -->
<property name="url" value="${url}" />
<!-- username -->
<property name="username" value="${username}" />
<!-- password -->
<property name="password" value="${password}" />
</bean>
<!-- 整合mybatis框架 -->
<bean id="SqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 配置数据源 -->
<property name="dataSource" ref="DateSource" />
<!-- 配置扫描mapping文件 -->
<property value="classpath:com/demo/oracle/mapping/*.xml" name="mapperLocations"/>
</bean>
<!-- DAO接口所在包名，Spring会自动查找其下的类 -->
<bean id="MapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.demo.oracle.dao" />
<property name="sqlSessionFactoryBeanName" value="SqlSessionFactoryBean" />
</bean>
</beans>

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.demo.oracle.dao.UserDao">
<resultMap type="com.demo.oracle.domain.User" id="selectUser">
<result column="username" property="username" />
<result column="password" property="password" />
<result column="age" property="age" />
</resultMap>
<!-- 通过用户名查找用户的所有信息 -->
<select id="selectUserByUsername" resultMap="selectUser">
select * from
usertable
</select>
<!-- 添加用户-->
<insert id="insertUser" parameterType="com.demo.oracle.domain.User" resultType="java.lang.Integer" >
insert into usertable
(username,password,age) values(#{username},#{password},#{age})
</insert>
<!-- 通过用户名称删除用户信息 -->
<delete id="delateUser" parameterType="java.lang.String" resultType="java.lang.Integer">
delete from usertable where username=#{username}
</delete>
</mapper>