Spring学习记录(2) Spring MVC+Mybatis 注解配置

所有XML的配置如下：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    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/tx
        http://www.springframework.org/schema/tx/spring-tx-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/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    <!-- 引入jdbc配置文件 -->
    <context:property-placeholder location="classpath:jdbc.properties" />　　 <!-- 启用注解，并且扫描基础包以及其下的各个子包 -->
    <context:component-scan base-package="com.thunder.selfsite.blog" />
    <!-- 对数据源进行事务管理 -->
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>
    <tx:annotation-driven transaction-manager="transactionManager"/>    <!-- 事务管理配置完成 -->
    <!-- 在3.1之后注册了RequestMappingHandlerMapping以及RequestMappingHandlerAdapter两个bean，　　　　　 并且给Adapter注册了常用的转换器，具体之后记录。-->
    <mvc:annotation-driven />

　　<!-- 拦截器配置　　　　　还可以手动配置在HandlerMapping的bean里　　　　　mapping定义匹配路径:   /*匹配根目录下第一级，/**匹配所有　　 -->
    <mvc:interceptors>
        <mvc:interceptor>
            <mvc:mapping path="/**"/>
            <bean class="com.thunder.selfsite.core.interceptor.SessionInterceptor"/>
        </mvc:interceptor>
    </mvc:interceptors>
    <!-- 下面注释掉的是手动注册的HandlerMapping和HandlerAdapter，　　　　　　messageConverters，这个转换器对json对象进行转换。因为手动注册的话不会自动提供一些默认的转换器　　<bean
        class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
        <property name="messageConverters">
            <list>
                <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter" />
            </list>
        </property>
    </bean>　　这个bean里可以配置一些拦截器
    <bean
        class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping">
        <property name="interceptors">
            <list>
                <bean class="com.thunder.selfsite.core.interceptor.SessionInterceptor"/>
            </list>
        </property>
    </bean>
     -->

    <!-- 视图处理器 　　　　返回的视图名会自动在前面加上prefix后面加上suffix得到路径　　-->
    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.UrlBasedViewResolver">
        <property name="viewClass"
            value="org.springframework.web.servlet.view.JstlView" />
        <property name="prefix" value="/WEB-INF/views/" />
        <property name="suffix" value=".jsp" />
    </bean>

    <!-- 定义数据源 -->
    <bean id="dataSource" class="org.apache.tomcat.jdbc.pool.DataSource"
        destroy-method="close">
        <property name="driverClassName" value="${db.driverClassName}" />
        <property name="url" value="${db.url}" />
        <property name="username" value="${db.username}" />
        <property name="password" value="${db.password}" />
        <property name="initialSize" value="${db.initialSize}" />
        <property name="maxActive" value="${db.maxActive}" />
        <property name="maxIdle" value="${db.maxIdle}" />
        <property name="maxWait" value="${db.maxWait}" />
        <property name="minIdle" value="${db.minIdle}" />
        <property name="testWhileIdle" value="${db.testWhileIdle}" />
        <property name="validationQuery" value="${db.validationQuery}" />
    </bean>

    <!-- 开始配置mybati -->
    <!-- 自动扫描mapping文件 start -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="configLocation" value="classpath:mybatis-config.xml" />

        <property name="mapperLocations">
            <list>
                <!-- 表示在com.thunder包或以下所有目录中，所有xml文件 -->
                <value>classpath*:/com/thunder/**/*.xml</value>
            </list>
        </property>
        <property name="configurationProperties">
            <props>
                <prop key="dialect">mysql</prop>
            </props>
        </property>
    </bean>
    <!-- 配置扫描器 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">　　　　　<!-- 这种配置方式不用写dao层的实现，这里的包是dao接口的包 -->
        <property name="basePackage" value="com.thunder.selfsite.blog.dao" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
    </bean>
    <!-- 自动扫描mapping文件 end -->
</beans>

mybatis-config.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>
    <settings>
        <setting name="mapUnderscoreToCamelCase" value="true" />
        <setting name="lazyLoadingEnabled" value="true"/>　　　　　<!-- 按需加载对象 -->
        <setting name="aggressiveLazyLoading" value="false"/>
    </settings>
</configuration>