一、环境搭建
1.创建动态web工程
2.引入jar包

3.创建目录结构

4.创建数据库的配置文件（.properties）

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql:///***
jdbc.password=**
jdbc.user=**

二.配置mybatis环境
1.创建实体类bean和dao类（代码略）
2.创建dao（mybatis的配置文件）
三.配置SpringMVC（在web.xml中）
1.配置ContextConfigListener
2.同时创建applicationContext.xml、spring-servlet.xml文件
3.配置spring-servlet.xml文件
四.配置spring环境（其中包含配置mybatis）
五.前段及service层和controller层设计

web.xml<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://xmlns.jcp.org/xml/ns/javaee"xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"id="WebApp_ID" version="3.1"><!-- Spring配置文件 --><context-param><param-name>contextConfigLocation</param-name><param-value>classpath:applicationContext.xml</param-value></context-param><!-- Bootstraps the root web application context before servlet initialization --><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!-- SpringMVC的配置文件 --><!-- The front controller of this Spring Web application, responsible for handling all application requests --><servlet><servlet-name>spring</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><load-on-startup>1</load-on-startup></servlet><!-- Map all requests to the DispatcherServlet for handling --><servlet-mapping><servlet-name>spring</servlet-name><url-pattern>/</url-pattern></servlet-mapping></web-app>

applicationContext.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:context="http://www.springframework.org/schema/context"xmlns:tx="http://www.springframework.org/schema/tx"xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"xsi:schemaLocation="http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring-1.2.xsdhttp://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd"><!-- Spring配置文件，希望管理所有的逻辑组件等 --><!-- 除了Controller之外都扫描 --><context:component-scan base-package="mybatis"><context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/></context:component-scan><!-- 引述数据库的配置文件 --><context:property-placeholder location="classpath:dbcpfig.properties"/><!-- Spring用来控制业务逻辑、数据源、事务控制、aop --><bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"><property name="jdbcUrl" value="${jdbc.url}"></property><property name="driverClass" value="${jdbc.driver}"></property><property name="user" value="${jdbc.user}"></property><property name="password" value="${jdbc.password}"></property></bean><!-- spring事务管理 --><bean id="dataSourceTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><!-- 控制住数据里里面的所有链接,连接的提交、关闭都是管理器控制的 --><property name="dataSource" ref="dataSource"></property></bean><!-- 开启基于注解的事务 --><tx:annotation-driven transaction-manager="dataSourceTransactionManager"/><!-- 整合mybatis --><!-- 目的：1.spring管理所有组件。mapper的实现类service==>Dao  @Autowired：自动关注入mapper;2.spring用来管理实务，spring声明事务--><!-- 会创建出SqlsessionFactory对象 --><bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean"><property name="dataSource" ref="dataSource"></property><!-- configLocation指定全局配置文件的位置 --><property name="configLocation" value="classpath:mybatis-config.xml"></property><!-- mapperLocations:指定mapper文件的位置 --><property name="mapperLocations" value="classpath:mybatis/mapper/*.xml"></property></bean><!-- 扫描所有的mapper接口的实现，让这些mapper能够自动注入; base-package:指定mapper接口的包名  --><mybatis-spring:scan base-package="mybatis.dao"/>
</beans>

spring-servlet.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:context="http://www.springframework.org/schema/context"xmlns:mvc="http://www.springframework.org/schema/mvc"xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsdhttp://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd"><!-- SpringMVC配置文件，只负责网站的跳转逻辑--><!-- 只扫描控制器  --><context:component-scan base-package="mybatis" use-default-filters="true"><context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/></context:component-scan><!-- 正确处理动态资源 --><mvc:annotation-driven></mvc:annotation-driven><!-- 正确处理静资源 --><mvc:default-servlet-handler/><!-- 视图解析器 --><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/WEB-INF/pages/"></property><property name="suffix" value=".jsp"></property></bean>
</beans>

mybatis.xml<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configurationPUBLIC "-//mybatis.org//DTD Config 3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd"><configuration><settings><!-- 延迟加载 --><setting name="lazyLoadingEnabled" value="true"/><setting name="aggressiveLazyLoading" value="false"/><!-- 启用驼峰命名 --><setting name="mapUnderscoreToCamelCase" value="true"/> </settings>
</configuration>

EmployeeMapper.javapublic interface EmployeeMapper {public List<Employee> getEmps();}

EmployeeService.java@Service
public class EmployeeService {@Autowiredprivate EmployeeMapper employeeMapper;public List<Employee> getEmps(){return employeeMapper.getEmps();}
}

index.jsp<body>
<a href="getemps">查询所有员工</a>
</body>

list.jsp<%@ taglib prefix="c" uri="<body><h4>员工列表</h4><table><tr><td>Id</td><td>LastName</td><td>Email</td><td>Gender</td></tr><c:forEach items="${allEmps }" var="emp"><tr><td>${emp.id }</td><td>${emp.lastName }</td><td>${emp.email }</td><td>${emp.gender }</td></tr></c:forEach></table>
</body>