package com.mybatis.service;import com.mybatis.model.Student;public interface StudentService {void insertStudent(int id, String username);public Student getStudentById(int Id);
}

package com.mybatis.serviceImpl;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import com.mybatis.dao.StudentMapper;
import com.mybatis.model.Student;
import com.mybatis.service.StudentService;@Service
public class StudentServiceImpl implements StudentService{@Autowiredprivate StudentMapper studentMapper;@Overridepublic void insertStudent(int id, String username) {Student stu = new Student(id, username);}@Overridepublic Student getStudentById(int id) {return studentMapper.selectByPrimaryKey(id);}
}

<?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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsdhttp://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"><context:component-scan base-package="com.mybatis" /><!-- 引入 jdbc 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.dbcp2.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="${initialSize}" />  <!-- 连接池最大数量 -->  <property name="maxTotal" value="${maxTotal}" />  <!-- 连接池最大空闲 -->  <property name="maxIdle" value="${maxIdle}" />  <!-- 连接池最小空闲 -->  <property name="minIdle" value="${minIdle}" />  <!-- 获取连接最大等待时间 -->  <property name="maxWaitMillis" value="${maxWait}" />  </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" /><!-- 自动扫描mapping.xml文件 -->  <property name="mapperLocations" value="classpath:com/mybatis/orm/*.xml" /> </bean><!-- DAO接口所在包名，Spring会自动查找其下的类 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><property name="basePackage" value="com.mybatis.dao" /><property name="sqlSessionFactoryBeanName" value="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>

package com.mybatis.test;import javax.annotation.Resource;import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;import com.mybatis.model.Student;
import com.mybatis.service.StudentService;@RunWith(SpringJUnit4ClassRunner.class) //表示继承了SpringJUnit4ClassRunner类
@ContextConfiguration(locations = {"classpath:spring-mybatis.xml"})  public class TestMyBatis {  @Resource  private StudentService studentService;  @Test  public void test1() {  Student stu =  studentService.getStudentById(1); System.out.println(" the name is " + stu.getName());  }
}  

<?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-3.1.xsd    http://www.springframework.org/schema/context    http://www.springframework.org/schema/context/spring-context-3.1.xsd    http://www.springframework.org/schema/mvc    http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  <!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 -->  <context:component-scan base-package="com.mybatis.controller" />  <!--避免IE执行AJAX时，返回JSON出现下载文件 -->  <bean id="mappingJacksonHttpMessageConverter"  class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">  <property name="supportedMediaTypes">  <list>  <value>text/html;charset=UTF-8</value>  </list>  </property>  </bean>  <!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 -->  <bean  class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">  <property name="messageConverters">  <list>  <ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON转换器 -->  </list>  </property>  </bean>  <!-- 定义跳转的文件的前后缀 ，视图模式配置-->  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个 可用的url地址 -->  <property name="prefix" value="/WEB-INF/view/" />  <property name="suffix" value=".jsp" />  </bean>  <!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 -->  <bean id="multipartResolver"    class="org.springframework.web.multipart.commons.CommonsMultipartResolver">    <!-- 默认编码 -->  <property name="defaultEncoding" value="utf-8" />    <!-- 文件大小最大值 -->  <property name="maxUploadSize" value="10485760000" />    <!-- 内存中的最大值 -->  <property name="maxInMemorySize" value="40960" />    </bean>   </beans>  

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://java.sun.com/xml/ns/javaee"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"version="3.0"><display-name>MyBatis SpringMVC Integration</display-name><!-- Spring和mybatis的配置文件 --><context-param><param-name>contextConfigLocation</param-name><param-value>classpath:spring-mybatis.xml</param-value></context-param><!-- 编码过滤器 --><filter><filter-name>encodingFilter</filter-name><filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class><async-supported>true</async-supported><init-param><param-name>encoding</param-name><param-value>UTF-8</param-value></init-param></filter><filter-mapping><filter-name>encodingFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping><!-- Spring监听器 --><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!-- 防止Spring内存溢出监听器 --><listener><listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class></listener><!-- Spring MVC servlet --><servlet><servlet-name>SpringMVC</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>classpath:/spring-mvc.xml</param-value></init-param><load-on-startup>1</load-on-startup><async-supported>true</async-supported></servlet><servlet-mapping><servlet-name>SpringMVC</servlet-name><!-- 此处可以可以配置成*.do，对应struts的后缀习惯 --><url-pattern>/</url-pattern></servlet-mapping><welcome-file-list><welcome-file>/index.jsp</welcome-file></welcome-file-list></web-app>