SSM介紹

SSM 是 SpringMVC 做控制器(controller)，Spring 管理各層的元件，MyBatis 負責持久化層。

Spring容器配置

<!-- 檔名稱beans.xml
核心配置檔案
用於管理各種元件
檔案位置在 src 下
-->
<?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: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-3.0.xsd
                         http://www.springframework.org/schema/context
                         http://www.springframework.org/schema/context/spring-context-3.0.xsd
                         http://www.springframework.org/schema/tx
                         http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
                         http://www.springframework.org/schema/aop 
                         http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"
 
>

    <!-- 1.包掃描，service dao -->
    <context:component-scan base-package="cn.itcast.ssm.dao,cn.itcast.ssm.service"/>

    <!-- 2.jdbc.properties屬性配置檔案 -->
    <context:property-placeholder location="classpath:jdbc.properties"/>

    <!-- 3.資料來源 DataSource -->
    <bean
 
 id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${jdbc.driverclass}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>

    <!-- 4.SqlSessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!-- spring和mybatis整合 -->
        <!-- 1）引入mybatis核心配置檔案 -->
        <property name="configLocation" value="classpath:sqlMapConfig.xml"/>

        <!-- 2）掃描指定目錄下的所有Mapper.xml -->
        <property name="mapperLocations" value="classpath:cn/itcast/ssm/mapper/*.xml"/>
    </bean>

    <!-- 5.事務 -->
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <tx:advice id="txAdvice" transaction-manager="txManager">
        <tx:attributes>
            <tx:method name="save*" propagation="REQUIRED"/>
            <tx:method name="insert*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED"/>

            <tx:method name="find*" read-only="true"/>
            <tx:method name="get*" read-only="true"/>
            <tx:method name="view*" read-only="true"/>

            <tx:method name="*" read-only="true"/>
        </tx:attributes>
    </tx:advice>
    <aop:config>
        <aop:pointcut expression="execution(* cn.itcast.ssm.service.*.*(..))" id="pointCut"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pointCut"/>
    </aop:config>            
</beans>

MyBatis配置檔案

<!--
檔名：sqlMapConfig.xml
mybatis配置檔案 就是這麼簡單,它會通過spring 注入 內容
檔案位置在 src 下
-->
<?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>

• 檔名：log4j.properties
  這是mybatis依賴包需要配置檔案，用於 日誌管理
  檔案位於 src 下

log4j.rootLogger=debug, stdout

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

log4j.logger.org.apache.ibatis=DEBUG
log4j.logger.java.sql=DEBUG

• jdbc.properties 檔案
  用於設定資料來源
  檔案位置在 src 下

jdbc.driverclass=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatisdb?characterEncoding=UTF-8
jdbc.username=root
jdbc.password=root

c3p0.pool.size.max=10
c3p0.pool.size.min=2
c3p0.pool.size.ini=3
c3p0.pool.size.increment=2

SpringMVC配置

<!--
檔名稱：Springmvc-servlet.xml
用於管理控制器，它會在beans.xml引入
檔案位置在 src 下
-->
<?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-3.0.xsd 
    http://www.springframework.org/schema/mvc 
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd 
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-3.0.xsd 
    http://www.springframework.org/schema/aop 
    http://www.springframework.org/schema/aop/spring-aop-3.0.xsd 
    http://www.springframework.org/schema/tx 
    http://www.springframework.org/schema/tx/spring-tx-3.0.xsd ">

    <!-- 1.包掃描controller -->
    <context:component-scan base-package="cn.itcast.ssm.web.controller"/>
    <!-- 啟用註解驅動-->
    <mvc:annotation-driven/>
    <!-- 2.內部資源檢視解析器  -->
    <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages"/>
        <property name="suffix" value=""/>
    </bean>

</beans>

web.xml配置

<!--檔案位置在 /WEB-INF/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_3_0.xsd"
        id="WebApp_ID" version="3.0">

    <!-- 1.spring容器 listener -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:beans.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!-- 2.springmvc servlet -->
    <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:springmvc-servlet.xml</param-value>
        </init-param>
    </servlet>

    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>*.action</url-pattern>
    </servlet-mapping>

    <!-- 3.spring 中文亂碼 filter -->
    <!-- 編碼過濾器，解決中文亂碼 -->
    <filter>
        <filter-name>SpringEncoding</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>SpringEncoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>   
</web-app>