2020，基于狂神说的SSM+TOMCAT整合实现简单的图书管理系统

2021，基于狂神说的SSM+TOMCAT整合实现简单的图书管理系统
Java开发常用类总结

SSM整合文件配置

1.mybatisConfig.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="cn.itlaobing.models"/>
	</typeAliases>
</configuration>

2. 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-4.3.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd">

	<!-- 0:管理controller的bean -->
	<context:component-scan base-package="cn.itlaobing.controller"/>
	
	<!-- 1：启动处理器适配器注解，启动处理器映射器注解 -->
	<mvc:annotation-driven/>
	
	<!-- 2：视图解析器 -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>
		<property name="prefix" value="/WEB-INF/views/"></property>
		<property name="suffix" value=".jsp"></property>
	</bean>

	<!-- 3：静态资源访问 -->
	<mvc:default-servlet-handler/>
</beans>

3. applicationContext.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"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
		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-4.3.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

	<!-- 
	1:创建bean，依赖注入
	dao和service中的bean由spring容器创建，controller中的bean由springmvc创建
	扫描多个包使用分号分割
	-->
	<context:component-scan base-package="cn.itlaobing.services;cn.itlaobing.dao"/>
	
	<!--2： 创建数据源 -->
	<context:property-placeholder location="classpath:db.properties"/>
	
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<property name="driverClass" value="${jdbc.driverClass}"></property>
		<property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
		<property name="user" value="${jdbc.user}"></property>
		<property name="password" value="${jdbc.password}"></property>
		<!-- 初始化时的连接数，取值应该在maxPoolSize和minPoolSize之间，默认是3 -->
		<property name="initialPoolSize" value="${jdbc.initialPoolSize}"></property>
		<!-- 连接池中保留的最大连接数量，默认15 -->
		<property name="maxPoolSize" value="${jdbc.maxPoolSize}"></property>
		<!-- 连接池中保留的最小连接数量，默认3 -->
		<property name="minPoolSize" value="${jdbc.minPoolSize}"></property>
		<!-- 当连接池中的连接耗尽的时候，c3p0一次同时获取的连接数，默认3 -->
		<property name="acquireIncrement" value="${jdbc.acquireIncrement}"></property>
	</bean>

	<!-- 3: spring整合mybatis，创建sqlSessionFactory -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<!-- 3.1注入数据源 -->
		<property name="dataSource" ref="dataSource"></property>
		<!-- 3.2注入配置文件 -->
		<property name="configLocation" value="classpath:mybatisConfig.xml"></property>
		<!-- 3.3注入映射文件 -->
		<property name="mapperLocations" value="classpath:mapper/*.xml"></property>
	</bean>
	<!-- 将mybatis生成的dao的代理对象交给spring容器管理 -->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="basePackage" value="cn.itlaobing.dao"></property>
	</bean>
	
	<!-- 4:事务管理器 -->
	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource"></property>
	</bean>
	<aop:config>
		<aop:pointcut expression="execution(* cn.itlaobing.services..*(..))" id="txPoint"/>
		<aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/>
	</aop:config>
	<tx:advice id="txAdvice">
		<tx:attributes>
			<tx:method name="*" propagation="REQUIRED"/>
			<tx:method name="select*" read-only="true"/>
		</tx:attributes>
	</tx:advice>
</beans>