springmvc和mybatis整合关键配置

springmvc+mybaits的系统架构:

springmvc和mybatis整合关键配置_第1张图片

第一步:整合dao层

         mybatis和spring整合,通过spring管理mapper接口。

         使用mapper的扫描器自动扫描mapper接口在spring中进行注册。

 

第二步:整合service层

         通过spring管理 service接口。

         使用配置方式将service接口配置在spring配置文件中。

         实现事务控制。

 

第三步:整合springmvc

         由于springmvc是spring的模块,不需要整合。


所需要的jar包:

数据库驱动包:mysql5.1

mybatis的jar包

mybatis和spring整合包

log4j包

dbcp数据库连接池包

spring3.2所有jar包

jstl包


mybatis配置文件     sqlMapConfig.xml:

<?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>
	
	<!-- 全局setting配置,根据需要添加 -->
	
	<!-- 配置别名 -->
	<typeAliases>
		<!-- 批量扫描别名 -->
		<package name="cn.itcast.ssm.po"/>
	</typeAliases>

	<!-- 配置mapper
	由于使用spring和mybatis的整合包进行mapper扫描,这里不需要配置了。
	必须遵循:mapper.xml和mapper.java文件同名且在一个目录 
	 -->

	<!-- <mappers>
	
	</mappers> -->
</configuration>


db.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis
jdbc.username=root
jdbc.password=



applicationContext-dao.xml


配置:
数据源
SqlSessionFactory
mapper扫描器

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
		http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 
		http://www.springframework.org/schema/mvc 
		http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 
		http://www.springframework.org/schema/context 
		http://www.springframework.org/schema/context/spring-context-3.2.xsd 
		http://www.springframework.org/schema/aop 
		http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 
		http://www.springframework.org/schema/tx 
		http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

	<!-- 加载db.properties文件中的内容,db.properties文件中key命名要有一定的特殊规则 -->
	<context:property-placeholder location="classpath:db.properties" />
	<!-- 配置数据源 ,dbcp -->

	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close">
		<property name="driverClassName" value="${jdbc.driver}" />
		<property name="url" value="${jdbc.url}" />
		<property name="username" value="${jdbc.username}" />
		<property name="password" value="${jdbc.password}" />
		<property name="maxActive" value="30" />
		<property name="maxIdle" value="5" />
	</bean>
	<!-- sqlSessionFactory -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<!-- 数据库连接池 -->
		<property name="dataSource" ref="dataSource" />
		<!-- 加载mybatis的全局配置文件 -->
		<property name="configLocation" value="classpath:mybatis/sqlMapConfig.xml" />
	</bean>
	<!-- mapper扫描器 -->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<!-- 扫描包路径,如果需要扫描多个包,中间使用半角逗号隔开 -->
		<property name="basePackage" value="cn.itcast.ssm.mapper"></property>
		<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
	</bean>

</beans>


mybatis mapper接口映射文件 ItemsMapperCustom.xml

<?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="cn.itcast.ssm.mapper.ItemsMapperCustom" >

   <!-- 定义商品查询的sql片段,就是商品查询条件 -->
   <sql id="query_items_where">
   	<!-- 使用动态sql,通过if判断,满足条件进行sql拼接 -->
   	<!-- 商品查询条件通过ItemsQueryVo包装对象 中itemsCustom属性传递 -->
   		<if test="itemsCustom!=null">
   			<if test="itemsCustom.name!=null and itemsCustom.name!=''">
   				items.name LIKE '%${itemsCustom.name}%'
   			</if>
   		</if>
	
   </sql>
  	
  	<!-- 商品列表查询 -->
  	<!-- parameterType传入包装对象(包装了查询条件)
  		resultType建议使用扩展对象
  	 -->
  	<select id="findItemsList" parameterType="cn.itcast.ssm.po.ItemsQueryVo"
  		 resultType="cn.itcast.ssm.po.ItemsCustom">
  		SELECT items.* FROM items  
  		<where>
  			<include refid="query_items_where"></include>
  		</where>
  	</select>
  	
</mapper>


applicationContext-service.xml

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
		http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 
		http://www.springframework.org/schema/mvc 
		http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 
		http://www.springframework.org/schema/context 
		http://www.springframework.org/schema/context/spring-context-3.2.xsd 
		http://www.springframework.org/schema/aop 
		http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 
		http://www.springframework.org/schema/tx 
		http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">
<!-- 商品管理的service -->
<bean id="itemsService" class="cn.itcast.ssm.service.impl.ItemsServiceImpl"/>
</beans>

 事务控制(applicationContext-transaction.xml)

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
		http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 
		http://www.springframework.org/schema/mvc 
		http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 
		http://www.springframework.org/schema/context 
		http://www.springframework.org/schema/context/spring-context-3.2.xsd 
		http://www.springframework.org/schema/aop 
		http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 
		http://www.springframework.org/schema/tx 
		http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

<!-- 事务管理器 
	对mybatis操作数据库事务控制,spring使用jdbc的事务控制类
-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
	<!-- 数据源
	dataSource在applicationContext-dao.xml中配置了
	 -->
	<property name="dataSource" ref="dataSource"/>
</bean>

<!-- 通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
	<tx:attributes>
		<!-- 传播行为 -->
		<tx:method name="save*" propagation="REQUIRED"/>
		<tx:method name="delete*" propagation="REQUIRED"/>
		<tx:method name="insert*" propagation="REQUIRED"/>
		<tx:method name="update*" propagation="REQUIRED"/>
		<tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
		<tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
		<tx:method name="select*" propagation="SUPPORTS" read-only="true"/>
	</tx:attributes>
</tx:advice>
<!-- aop -->
<aop:config>
	<aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.itcast.ssm.service.impl.*.*(..))"/>
</aop:config>

</beans>


springmvc.xml
创建springmvc.xml文件,配置处理器映射器、适配器、视图解析器

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
		http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 
		http://www.springframework.org/schema/mvc 
		http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 
		http://www.springframework.org/schema/context 
		http://www.springframework.org/schema/context/spring-context-3.2.xsd 
		http://www.springframework.org/schema/aop 
		http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 
		http://www.springframework.org/schema/tx 
		http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

	<!-- 可以扫描controller、service、...
	这里让扫描controller,指定controller的包
	 -->
	<context:component-scan base-package="cn.itcast.ssm.controller"></context:component-scan>
	
		
	<!--注解映射器 -->
	<!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/> -->
	<!--注解适配器 -->
	<!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/> -->
	
	<!-- 使用 mvc:annotation-driven代替上边注解映射器和注解适配器配置
	mvc:annotation-driven默认加载很多的参数绑定方法,
	比如json转换解析器就默认加载了,如果使用mvc:annotation-driven不用配置上边的RequestMappingHandlerMapping和RequestMappingHandlerAdapter
	实际开发时使用mvc:annotation-driven
	 -->
	<mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven>
	

	<!-- 视图解析器
	解析jsp解析,默认使用jstl标签,classpath下的得有jstl的包
	 -->
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<!-- 配置jsp路径的前缀 -->
		<property name="prefix" value="/WEB-INF/jsp/"/>
		<!-- 配置jsp路径的后缀 -->
		<property name="suffix" value=".jsp"/>
	</bean>
	
	<!-- 自定义参数绑定 -->
	<bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
		<!-- 转换器 -->
		<property name="converters">
			<list>
				<!-- 日期类型转换 -->
				<bean class="cn.itcast.ssm.controller.converter.CustomDateConverter"/>
			</list>
		</property>
		
	
	</bean>
</beans>

工程的web.xml

<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	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">
	<display-name>springmvc_mybatis1208</display-name>

	<!-- 加载spring容器 -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/classes/spring/applicationContext-*.xml</param-value>
	</context-param>
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>


	<!-- springmvc前端控制器 -->
	<servlet>
		<servlet-name>springmvc</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<!-- contextConfigLocation配置springmvc加载的配置文件(配置处理器映射器、适配器等等) 如果不配置contextConfigLocation,默认加载的是/WEB-INF/servlet名称-serlvet.xml(springmvc-servlet.xml) -->
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:spring/springmvc.xml</param-value>
		</init-param>
	</servlet>

	<servlet-mapping>
		<servlet-name>springmvc</servlet-name>
		<!-- 第一种:*.action,访问以.action结尾 由DispatcherServlet进行解析 第二种:/,所以访问的地址都由DispatcherServlet进行解析,对于静态文件的解析需要配置不让DispatcherServlet进行解析 
			使用此种方式可以实现 RESTful风格的url 第三种:/*,这样配置不对,使用这种配置,最终要转发到一个jsp页面时, 仍然会由DispatcherServlet解析jsp地址,不能根据jsp页面找到handler,会报错。 -->
		<url-pattern>*.action</url-pattern>
	</servlet-mapping>

	<!-- post乱码过虑器 -->
	<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>

	<welcome-file-list>
		<welcome-file>index.html</welcome-file>
		<welcome-file>index.htm</welcome-file>
		<welcome-file>index.jsp</welcome-file>
		<welcome-file>default.html</welcome-file>
		<welcome-file>default.htm</welcome-file>
		<welcome-file>default.jsp</welcome-file>
	</welcome-file-list>
</web-app>




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