<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
 <property name="dataSource" ref="dataSource" />
</bean>

@Override
 public SqlSessionFactory getObject() throws Exception {
  if (this.sqlSessionFactory == null) {
   afterPropertiesSet();
  }

  return this.sqlSessionFactory;
 }
 @Override
 public void afterPropertiesSet() throws Exception {
  notNull(dataSource, "Property 'dataSource' is required");
  notNull(sqlSessionFactoryBuilder, "Property 'sqlSessionFactoryBuilder' is required");
  state((configuration == null && configLocation == null) || !(configuration != null && configLocation != null),
       "Property 'configuration' and 'configLocation' can not specified with together");
  this.sqlSessionFactory = buildSqlSessionFactory();
 }

compile group: 'com.alibaba', name: 'druid', version: '1.1.2'
<!--阿里巴巴的数据库连接池-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
  <!-- 基本属性 url、user、password -->
  <property name="url" value="${jdbc_url}"/>
  <property name="username" value="${jdbc_user}"/>
  <property name="password" value="${jdbc_password}"/>
</bean>

jdbc_url=jdbc:mysql://localhost:3306/cnblogs?serverTimezone=Asia/Shanghai&characterEncoding=utf8
jdbc_user=root
jdbc_password=root

<!--加载配置文件路径-->
<bean id="configProperties" class="org.springframework.beans.factory.config.PropertiesFactoryBean">
  <property name="location" value="classpath:properties/datasource.properties"></property>
</bean>
<!--获取配置属性之后动态替换标签-->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer">
  <property name="properties" ref="configProperties"/>
</bean>

<!--采用自动扫描方式创建Mapper Bean-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
  <property name="basePackage" value="com.cnblogs.dao"></property>
</bean>

compile group: 'org.springframework', name: 'spring-tx', version: '4.3.10.RELEASE'
compile group: 'org.springframework', name: 'spring-jdbc', version: '4.3.10.RELEASE'
<!--事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
  <property name="dataSource" ref="dataSource" />
</bean>
<!--使用声明式事务管理方式-->
<tx:annotation-driven transaction-manager="transactionManager"/>

compile group: 'org.springframework', name: 'spring-webmvc', version: '4.3.10.RELEASE'
compile group: 'org.springframework', name: 'spring-tx', version: '4.3.10.RELEASE'
compile group: 'org.springframework', name: 'spring-jdbc', version: '4.3.10.RELEASE'
compile group: 'javax.servlet', name: 'javax.servlet-api', version: '3.1.0'
compile group: 'org.mybatis', name: 'mybatis-spring', version: '1.3.1'
compile group: 'org.mybatis', name: 'mybatis', version: '3.4.5'
compile group: 'mysql', name: 'mysql-connector-java', version: '6.0.6'
compile group: 'com.alibaba', name: 'druid', version: '1.1.2'

<?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"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
  <!--spring可以自动去扫描base-pack下面的包或者子包下面的Java文件-->
  <context:component-scan base-package="com.cnblogs.controller,com.cnblogs.service,com.cnblogs.dao"/>
  <!--自动注册RequestMappingHandlerMapping与RequestMappingHandlerAdpter-->
  <mvc:annotation-driven/>
  <!-- 对静态资源文件的访问-->
  <mvc:default-servlet-handler/>
  <!--加载配置文件路径-->
  <bean id="configProperties" class="org.springframework.beans.factory.config.PropertiesFactoryBean">
    <property name="location" value="classpath:properties/datasource.properties"></property>
  </bean>
  <!--获取配置属性之后动态替换标签-->
  <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer">
    <property name="properties" ref="configProperties"/>
  </bean>
  <!--阿里巴巴的数据库连接池-->
  <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
    <!-- 基本属性 url、user、password -->
    <property name="url" value="${jdbc_url}"/>
    <property name="username" value="${jdbc_user}"/>
    <property name="password" value="${jdbc_password}"/>
  </bean>
  <!--构建SqlSessionFactory-->
  <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <property name="dataSource" ref="dataSource"/>
    <property name="configLocation" value="classpath:config/mybatis-config.xml"/>
    <property name="mapperLocations" value="classpath:mappers/*.xml"/>
  </bean>
  <!--采用自动扫描方式创建Mapper Bean-->
  <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <property name="basePackage" value="com.cnblogs.dao"></property>
  </bean>
  <!--事务管理器-->
  <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource" ref="dataSource" />
  </bean>
  <!--使用声明式事务管理方式-->
  <tx:annotation-driven transaction-manager="transactionManager"/>
  <!--视图解析器-->
  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/content"></property>
    <property name="suffix" value=".jsp"></property>
  </bean>
</beans>