springmvc

1.导入价包
2.web.xml设置dispatherServlet

<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:applicationContext.xml</param-value>
        </init-param>
    </servlet>

3.applicationContext.xml设置

<mvc:annotation-driven></mvc:annotation-driven>

4.注解controller层
@RequestMapping()注解方法

重定向与转发

默认转发
return "redirect:show.jsp";
return "redirect:show";
return "show.jsp";

模型驱动和获取属性

通过参数获得

("aa")
public String aa(User user,String modify){

} 

整合mvcspring和mybatis

1.导入价包（mybatis-spring-1.1.1.jar）
2.创建sessionFactory

dataSource

    <bean
        class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer">
        <property name="locations">
            <value>classpath:db.properties</value>
        </property>
        </bean>
        <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
        <property name="url" value="${url}"></property>
        <property name="username" value="${username}"></property>
        <property name="password" value="${password}"></property>
        <property name="driverClassName" value="${driver}"></property>
    </bean>

<bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
           <property name="dataSource" ref="dataSource"></property>   <!-- 设置dataSource -->
           <property name="mapperLocations" value="classpath:com/mapper/*.xml"></property><!-- 设置mapepr映射路径 -->

       </bean>
       <bean id="mcf" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
       <property name="basePackage" value="com.dao"></property>
       <property name="sqlSessionFactoryBeanName" value="sessionFactory"></property>
       </bean><!-- 设置MapperScannerConfigurer -->

最后实现dao层的注入@Autowired