SSM+Maven 稳定整合（含dao层实现类）

Spring-mybatis.xml

<?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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> 
<!-- 引入配置文件 -->
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:jdbc.properties" />
</bean>

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="${driver}" />
<property name="url" value="${url}" />
<property name="username" value="${username}" />
<property name="password" value="${password}" />
<!-- 初始化连接大小 -->
<property name="initialSize" value="${initialSize}"></property>
<!-- 连接池最大数量 -->
<property name="maxActive" value="${maxActive}"></property>
<!-- 连接池最大空闲 -->
<property name="maxIdle" value="${maxIdle}"></property>
<!-- 连接池最小空闲 -->
<property name="minIdle" value="${minIdle}"></property>
<!-- 获取连接最大等待时间 -->
<property name="maxWait" value="${maxWait}"></property>
</bean>
<!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 手动扫描mapping.xml文件 -->
<property name="configLocation" value="classpath:sqlMapperConfig.xml"></property>
</bean>
<!-- 原始dao接口 -->
<bean id="loginMapper" class="com.cn.xt.daoImpl.loginMapperImpl">
<property name="sqlSessionFactory" ref="sqlSessionFactory"/>
</bean>
<!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
</beans>

sqlMappingConfig.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!-- 别名设置 -->
<!-- 单个配置
type:类型路径
alias:别名-->
<!-- <typeAliases>
<typeAlias type="cn.edu.hpu.ssm.po.User" alias="user"/>
</typeAliases> -->

<!-- 批量设置(推荐使用)
指定包名，mybatis自动扫描扫描po类，自动定义别名。默认为类名（首字母大写或小写） -->
<!--  <typeAliases>
<package name="com.cn.xt.bean"/>
</typeAliases>  -->

<!-- 通过mapper接口，加载映射文件
规范：mapper接口名必须与mapper。xml文件名相同，且放在同一包下
前提是使用mapper代理的方式 -->
<!--  <mappers>
<mapper class="com.cn.xt.IDao.loginMapper"/>
</mappers>   -->
<mappers>
<mapper resource="com/cn/xt/daoImpl/daoMapper/loginMapper.xml"/>
</mappers>
</configuration>

loginMapper.xml

<?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.cn.xt.IDao.loginMapper">
<select id="login" resultType="int">
select count(*) from stu_info
</select>
</mapper>

loginMapper.java

package com.cn.xt.IDao;

import java.util.Map;

import org.springframework.stereotype.Repository;

public interface loginMapper {

/**
*
* @return int
*/
public int login();
}

loginMapperImpl.java

package com.cn.xt.daoImpl;

import java.util.Map;

import org.apache.ibatis.session.SqlSession;
import org.mybatis.spring.support.SqlSessionDaoSupport;
import org.springframework.stereotype.Repository;

import com.cn.xt.IDao.loginMapper;
@Repository
public class loginMapperImpl extends SqlSessionDaoSupport implements loginMapper{

public int login() {

int selectOne = this.getSqlSession().update("login", "");
return  selectOne;
}

}