Spring+SpringMVC+Mybatis整合

1. 需要jar包(maven管理)

mybatis-spring、mybatis、mysql-connector-java、spring-context、spring-webmvc、spring-orm、spring-test、jackson-databind、javax.servlet-api、javax.servlet.jsp-api、jstl、commons-dbcp2、aspectjweaver、aspectjrt

2. 配置web.xml

2.1 前端控制器

    <!-- front controller -->
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    </servlet>
    
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

2.2 IoC容器监听器+路径参数

    <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>

2.3 编码过滤器

    <filter>
        <filter-name>enc</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>enc</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

3.配置applicationContext.xml

        在包范围下扫描注解
    <context:component-scan base-package="com.kygo.ssm" />
      注解代替配置
    <context:annotation-config />
    切面自动生成代理
    <aop:aspectj-autoproxy />
    数据源(连接池)
    <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/dang?useUnicode=true&characterEncoding=utf8"/>
        <property name="username" value="root"/>
        <property name="password" value="123456"/>
    </bean>
    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="typeAliasesPackage" value="com.kygo.ssm.entity" />
        <!--  
        <property name="typeHandlersPackage" value="com.kygo.ssm.typehandlers" />
        -->
        <property name="mapperLocations" value="classpath*:com/kygo/ssm/mapper/*.xml" />
        <!-- 
        <property name="configLocation" value="WEB-INF/mybatis-config.xml" />
        -->
    </bean>

    <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg index="0" ref="sqlSessionFactory" />
    </bean>
    
    <bean id="transactionManager"
    class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>
    注解声明事务
    <tx:annotation-driven transaction-manager="transactionManager" />

4. 配置dispatcher-sevlet.xml

    <context:component-scan base-package="com.kygo.ssm.controller" />
    <context:annotation-config />
      
        静态页面使用默认的servlet
    <mvc:default-servlet-handler />
    
    <!--  
    <mvc:resources location="/WEB-INF/*" mapping="/resource" />
    -->
    
  视图解析器
    <bean id="jspViewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass"
            value="org.springframework.web.servlet.view.JstlView" />
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>
    
消息转换器配置: 配置后可以直接返回对应的消息(图片，字符串，json等)
    <mvc:annotation-driven>
        <mvc:message-converters>
            <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter" />
            <bean class="org.springframework.http.converter.StringHttpMessageConverter" />
            <bean class="org.springframework.http.converter.BufferedImageHttpMessageConverter" />
        </mvc:message-converters>
    </mvc:annotation-driven>

freemarker

thymeleaf