创建一个动态的WEB工程 导入SSM需要使用的jar包 导入整合适配包 导入其他技术的一些支持包 连接池 数据库驱动 日志…
在web.xml中配置: Springmvc的前端控制器 实例化Spring容器的监听器 字符编码过滤器 REST 过滤器 创建Spring的配置文件: applicationContext.xml:组件扫描、 连接池、 事务… 创建Springmvc的配置文件: springmvc.xml : 组件扫描、 视图解析器 mvc:...
创建MyBatis的全局配置文件 编写实体类 Mapper接口 Mapper映射文件
MyBatis的 SqlSession的创建 . MyBatis的 Mapper接口的代理实现类
课堂: 查询所有的员工信息,列表显示 课下: 增删改
<?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_2_5.xsd" id="WebApp_ID" version="2.5">
<!-- 字符编码过滤器 -->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- REST 过滤器 -->
<filter>
<filter-name>HiddenHttpMethodFilter</filter-name>
<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>HiddenHttpMethodFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 实例化SpringIOC容器的监听器 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- Springmvc的前端控制器 -->
<servlet>
<servlet-name>springDispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springDispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
<?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.xsd
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-4.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
<!-- 组件扫描 -->
<context:component-scan base-package="com.atguigu.ssm">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- 连接池 -->
<context:property-placeholder location="classpath:db.properties"/>
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"></property>
<property name="jdbcUrl" value="${jdbc.url}"></property>
<property name="user" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<!-- 事务 -->
<bean id="dataSourceTransactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<tx:annotation-driven transaction-manager="dataSourceTransactionManager"/>
</beans>
<?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.xsd
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-4.0.xsd">
<!-- 组件扫描 -->
<context:component-scan base-package="com.atguigu.ssm" use-default-filters="false">
<context:include-filter type="annotation"
expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!--视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<mvc:default-servlet-handler/>
<mvc:annotation-driven/>
</beans>
<?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>
<!-- Spring 整合 MyBatis 后, MyBatis中配置数据源,事务等一些配置都可以
迁移到Spring的整合配置中。MyBatis配置文件中只需要配置与MyBatis相关
的即可。
-->
<!-- settings: 包含很多重要的设置项 -->
<settings>
<!-- 映射下划线到驼峰命名 -->
<setting name="mapUnderscoreToCamelCase" value="true"/>
<!-- 设置Mybatis对null值的默认处理 -->
<setting name="jdbcTypeForNull" value="NULL"/>
<!-- 开启延迟加载 -->
<setting name="lazyLoadingEnabled" value="true"/>
<!-- 设置加载的数据是按需还是全部 -->
<setting name="aggressiveLazyLoading" value="false"/>
<!-- 配置开启二级缓存 -->
<setting name="cacheEnabled" value="true"/>
</settings>
</configuration>
<?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.atguigu.ssm.mapper.EmployeeMapper">
<!-- public List<Employee> getAllEmps(); -->
<select id="getAllEmps" resultMap="myEmpsAndDept" >
select e.id eid, e.last_name,e.email,e.gender, d.id did, d.dept_name
from tbl_employee e ,tbl_dept d
where e.d_id = d.id
</select>
<resultMap type="com.atguigu.ssm.beans.Employee" id="myEmpsAndDept">
<id column="eid" property="id"/>
<result column="last_name" property="lastName"/>
<result column="email" property="email"/>
<result column="gender" property="gender"/>
<association property="dept" javaType="com.atguigu.ssm.beans.Department">
<id column="did" property="id"/>
<result column="dept_name" property="departmentName"/>
</association>
</resultMap>
</mapper>
<!-- Spring 整合 Mybatis -->
<!--1. SqlSession -->
<bean class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 指定数据源 -->
<property name="dataSource" ref="dataSource"></property>
<!-- MyBatis的配置文件 -->
<property name="configLocation"
value="classpath:mybatis-config.xml"></property>
<!-- MyBatis的SQL映射文件 -->
<property name="mapperLocations"
value="classpath:mybatis/mapper/*.xml"></property>
<property name="typeAliasesPackage"
value="com.atguigu.ssm.beans"></property>
</bean>
<!-- Mapper接口
MapperScannerConfigurer 为指定包下的Mapper接口批量生成代理实现类.bean的默认id是接口名首字母小写.
-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.atguigu.ssm.mapper"></property>
</bean>
<!-- <mybatis-spring:scan base-package="com.atguigu.ssm.mapper"/> -->