框架整合思路

springmvc+mybaits的系統(tǒng)架構(gòu)

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spring將各層進(jìn)行整合

通過spring管理持久層的mapper(相當(dāng)于dao接口)
通過spring管理業(yè)務(wù)層service只厘，service中可以調(diào)用mapper接口烙丛。
spring進(jìn)行事務(wù)控制。
通過spring管理表現(xiàn)層Controller羔味，Controller中可以調(diào)用service接口河咽。
mapper、service赋元、Controller都是javabean忘蟹，可以由spring來進(jìn)行統(tǒng)一管理。

第一步：整合dao層
mybatis和spring整合搁凸，通過spring管理mapper接口媚值。
使用mapper的掃描器自動掃描mapper接口在spring中進(jìn)行注冊。
第二步：整合service層
通過spring管理 service接口坪仇。
使用配置方式將service接口配置在spring配置文件中杂腰。
實(shí)現(xiàn)事務(wù)控制。
第三步：整合springmvc
由于springmvc是spring的模塊椅文，不需要整合喂很。

所需的jar包

mysql數(shù)據(jù)庫驅(qū)動包：
mybatis的jar包
mybatis和spring整合包
log4j包
druid數(shù)據(jù)庫連接池包
spring所有jar包（4.x搭配jdk8，3.x搭配jdk7）
jstl包

工程結(jié)構(gòu)

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整合dao

數(shù)據(jù)庫服務(wù)器配置文件
在classpath下創(chuàng)建db.properties

#配置信息采取name = value的形式

#1.配置驅(qū)動程序
jdbc.driver =com.mysql.jdbc.Driver

#2.配置數(shù)據(jù)庫url
jdbc.url = jdbc:mysql://localhost:3306/coder_school?useUnicode=true&characterEncoding=UTF-8

#3.配置用戶名
jdbc.username=root

#4.配置用戶密碼
jdbc.password=root

日志配置文件
在classpath下創(chuàng)建log4j.properties

# Global logging configuration
#\u751F\u4EA7\u73AF\u5883\u914D\u7F6Einfo   ERROR
log4j.rootLogger=DEBUG,stdout
# MyBatis logging configuration...
log4j.logger.org.mybatis.example.BlogMapper=TRACE
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

Mybatis配置文件
在classpath下創(chuàng)建mybatis/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>
    <typeAliases>
        <package name="school.coder.domain"></package>
    </typeAliases>
</configuration>

spring管理SqlSessionFactory皆刺、mapper
在classpath下創(chuàng)建spring/ applicationContext-dao.xml
配置數(shù)據(jù)源

<?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: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-4.0.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-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 ">
        
    <!-- 加載db.properties文件中的內(nèi)容少辣，db.properties文件中key命名要有一定的特殊規(guī)則 -->
    <context:property-placeholder location="classpath:db.properties" />
    <!-- 配置數(shù)據(jù)源 ，dbcp -->

    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <!-- 基本屬性 url羡蛾、user漓帅、password -->
        <property name="url" value="${jdbc.url}" />
        <property name="username" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />

        <!-- 配置初始化大小、最小、最大 -->
        <property name="initialSize" value="1" />
        <property name="minIdle" value="1" />
        <property name="maxActive" value="20" />

        <!-- 配置獲取連接等待超時(shí)的時(shí)間 -->
        <property name="maxWait" value="60000" />

        <!-- 配置間隔多久才進(jìn)行一次檢測忙干，檢測需要關(guān)閉的空閑連接器予，單位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="60000" />

        <!-- 配置一個(gè)連接在池中最小生存的時(shí)間，單位是毫秒 -->
        <property name="minEvictableIdleTimeMillis" value="300000" />

        <property name="validationQuery" value="SELECT 'x'" />
        <property name="testWhileIdle" value="true" />
        <property name="testOnBorrow" value="false" />
        <property name="testOnReturn" value="false" />

        <!-- 打開PSCache捐迫，并且指定每個(gè)連接上PSCache的大小 -->
        <property name="poolPreparedStatements" value="true" />
        <property name="maxPoolPreparedStatementPerConnectionSize" value="20" />

        <!-- 配置監(jiān)控統(tǒng)計(jì)攔截的filters乾翔，去掉后監(jiān)控界面sql無法統(tǒng)計(jì) -->
        <property name="filters" value="stat" />
    </bean>
    
    <!-- sqlSessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 數(shù)據(jù)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" />
    </bean>
    
    <!-- mapper掃描器 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 掃描包路徑，如果需要掃描多個(gè)包施戴，中間使用半角逗號隔開 -->
        <property name="basePackage" value="school.coder.mapper"></property>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
    </bean>
</beans>

有關(guān)連接池的參考

整合service

Spring管理service bean反浓，并進(jìn)行事務(wù)控制
定義service接口

<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 ">

        <context:component-scan base-package="school.coder.service.impl"></context:component-scan>


<!--     <bean id="ibs" class="com.neusoft.service.impl.AccountServiceImpl"/>
    <bean id="ius" class="com.neusoft.service.impl.UserServiceImpl"/> -->
</beans>

在applicationContext-transaction.xml中使用spring聲明式事務(wù)控制方法

<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-4.0.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-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 ">

<!-- 事務(wù)管理器 
    對mybatis操作數(shù)據(jù)庫事務(wù)控制，spring使用jdbc的事務(wù)控制類
-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>


</beans>

測試service赞哗，在方法實(shí)現(xiàn)上添加 @Transactional注解測試事務(wù)是否生效雷则。

springmvc.xml配置文件
在classpath下創(chuàng)建spring/springmvc.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/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/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
   
    <mvc:annotation-driven/>
   
   <mvc:resources location="/assets/" mapping="/assets/**"/>

      <!-- 文件上傳 -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <property name="maxUploadSize" value="10000000"></property>
    <property name="defaultEncoding" value="UTF-8"></property>
</bean>
        
   <!-- 配置自動掃描的包 -->
   <context:component-scan base-package="school.coder.controller"></context:component-scan>
   
        <!-- 配置視圖解析器 如何把handler 方法返回值解析為實(shí)際的物理視圖 -->
     <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp">
        </property>
     </bean>


<mvc:interceptors>

<!--如果配置了多個(gè)攔截器，則按順序執(zhí)行 -->

<!-- 登陸認(rèn)證攔截器 -->

<mvc:interceptor>

               <!-- /**表示所有url包括子url路徑 -->

    <mvc:mapping path="/admin/**"/>
    <mvc:exclude-mapping path="/admin/login"/>
    <bean class="school.coder.interceptor.AdminLoginInterceptor"></bean>

</mvc:interceptor>

</mvc:interceptors>
 
</beans>

web.xml配置文件
配置前端控制器
在web.xml中肪笋，添加spring容器監(jiān)聽器月劈，加載spring容器。

<?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">


    <!-- tomcat服務(wù)器藤乙，一啟動馬上讀取spring/applicationContext-*.xml -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring/applicationContext-*.xml</param-value>
    </context-param>

    <!-- tomcat服務(wù)器艺栈，一啟動就加載spring框架的ContextLoaderListener
    意味著，spring容器啟動湾盒，開始作用 -->
    <listener>
        <listener-class>
            org.springframework.web.context.ContextLoaderListener
        </listener-class>
    </listener>


    <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:spring/springmvc.xml</param-value>
        </init-param>
    </servlet>

    <servlet-mapping>
        <servlet-name>springDispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
        <!--    攔截不了.jsp文件 -->
    </servlet-mapping>


    <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>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

三大框架整合完畢，編寫測試程序驗(yàn)證诅妹。

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