[TOC] ## 1. 請求處理流程邏輯  1. SpringMVC核心處理流程： > 1. DispatcherServlet前端控制器接收發過來的請求，交給HandlerMapping處理器映射器 > 2. HandlerMapping處理器映射器，根據請求路徑找到相應的HandlerAdapter處理器適配器（處理器適配器就是那些攔截器或Controller） > 3. HandlerAdapter處理器適配器，處理一些功能請求，返回一個ModelAndView對象（包括模型數據、邏輯視圖名） > 4. ViewResolver視圖解析器，先根據ModelAndView中設置的View解析具體視圖 > 5. 然后再將Model模型中的數據渲染到View上 這些過程都是以DispatcherServlet為中軸線進行的。 2. web.xml 1. 根據配置初始化Spring容器 2. 服務器啟動的時候初始化 ## 2. 整合思路  ### 2.1 dao層： #### 1. Mybatis的配置文件：**SqlMapConfig.xml** 不需要配置任何內容，需要有文件頭。文件必須存在。 ~~~ <?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> </configuration> ~~~ #### 2. Spring容器配置文件： **applicationContext-dao.xml** 1. 在Spring容器中創建DataSource 2. 創建SqlSessionFactoryBean（SqlSessionFactory），其中指定xml映射文件。 3. 創建MapperScannerConfigurer對象，指定mapper接口位置 ~~~ <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd"> <!-- 數據庫連接池 --> <!-- 加載配置文件 --> <context:property-placeholder location="classpath:conf/db.properties" /> <!-- 數據庫連接池 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close"> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <property name="driverClassName" value="${jdbc.driver}" /> <property name="maxActive" value="10" /> <property name="minIdle" value="5" /> </bean> <!-- 讓spring管理sqlsessionfactory 使用mybatis和spring整合包中的 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 數據庫連接池 --> <property name="dataSource" ref="dataSource" /> <!-- 加載mybatis的全局配置文件 --> <property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml" /> <property name="mapperLocations" value="classpath:e3/mall/mapper/*.xml"></property> <!-- 這里另外配置mapper.xml路徑 --> </bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="e3.mall.mapper" /> </bean> </beans> ~~~ ### 2.2 Service層： #### 1. **applicationContext-service.xml**： 所有的service實現類都放到spring容器中管理。并由spring管理事務。 1. 掃描service層，創建bean ~~~ <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd"> <!-- 配置包掃描器 --> <context:component-scan base-package="cn.e3mall.service"/> </beans> ~~~ ### 2.3 表現層： #### **1. springmvc.xml** 1. 掃描controller 2. 啟動注解 ~~~ <?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.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <context:component-scan base-package="cn.e3mall.controller"/> <mvc:annotation-driven/> </beans> ~~~ ### 2.4 事務控制 1. 創建事務管理器DataSourceTransactionManager 2. 通知：指明對那些方法，進行什么樣的操作 3. 切面：對那些方法進行攔截，并運用通知 ~~~ <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd"> <!-- 事務管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 數據源 --> <property name="dataSource" ref="dataSource" /> </bean> <!-- 通知 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <!-- 傳播行為 --> <tx:method name="save*" propagation="REQUIRED" /> <tx:method name="insert*" propagation="REQUIRED" /> <tx:method name="add*" propagation="REQUIRED" /> <tx:method name="create*" propagation="REQUIRED" /> <tx:method name="delete*" propagation="REQUIRED" /> <tx:method name="update*" propagation="REQUIRED" /> <tx:method name="find*" propagation="SUPPORTS" read-only="true" /> <tx:method name="select*" propagation="SUPPORTS" read-only="true" /> <tx:method name="get*" propagation="SUPPORTS" read-only="true" /> </tx:attributes> </tx:advice> <!-- 切面 --> <aop:config> <aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.e3mall.service..*.*(..))" /> </aop:config> </beans> ~~~ ### 2.4 web.xml > 加載配置，初始化Spring容器，加載SpringMVC攔截器 >