校园商铺-2项目设计和框架搭建-6逐层完成SSM的各项配置

1. 创建/src/main/resources/jdbc.properties文件

jdbc.driver=com.mysql.jdbc.Driver

jdbc.url=jdbc:mysql://localhost:3306/o2o?useUnicode=true&characterEncoding=utf8

jdbc.username=root

jdbc.password=123456

2. 创建/src/main/resources/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>

	<!-- 配置全局属性 -->

	<settings>

		<!-- 使用jdbc的getGeneratedKeys获取数据库自增主键值️-->

		<setting name="useGeneratedKeys" value="true" />

		<!-- 使用列别名替换列名-->

		<setting name="useColumnLabel" value="true" />

		<!-- 开启驼峰命名替换：Table(create_time)->Entity{createTime}-->

		<setting name="mapUnderscoreToCamelCase" value="true" />

	</settings>

</configuration>

3. 创建/src/main/resources/spring/spring-dao.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"

       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.xsd">

	<!--配置整合mybatis过程-->

	<!--1.配置数据库相关参数properties的属性:${url}-->

	<context:property-placeholder location="classpath:jdbc.properties" />

	<!--2.数据库连接池-->

	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" >

		<!--配置连接池属性-->

		<property name="driverClass" value="${jdbc.driver}" />

		<property name="jdbcUrl" value="${jdbc.url}" />

		<property name="user" value="${jdbc.username}" />

		<property name="password" value="${jdbc.password}" />

		<!--c3p0连接池的私有属性-->

		<property name="maxPoolSize" value="30" />

		<property name="minPoolSize" value="10" />

		<!--关闭连接后不自动commit-->

		<property name="autoCommitOnClose" value="false" />

		<!--获取连接超时时间-->

		<property name="checkoutTimeout" value="10000" />

		<!--当获取连接失败后，重试次数-->

		<property name="acquireRetryAttempts" value="2" />

	</bean>

	<!--3.配置SqlSessionFactory对象-->

	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

		<!--注入数据库连接池-->

		<property name="dataSource" ref="dataSource" />

		<!--配置MyBatis全局配置文件：mybatis-config.xml-->

		<property name="configLocation" value="classpath:mybatis-config.xml" />

		<!--扫描entity包，使用别名-->

		<property name="typeAliasesPackage" value="com.csj2018.o2o.entity" />

		<!--扫描sql配置文件：mapper需要的xml文件-->

		<property name="mapperLocations" value="classpath:mapper/*.xml" />

	</bean>

	<!--4.配置扫描Dao接口包，动态实现Dao接口，注入到Spring容器中-->

	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

		<!--注入sqlSessionFactory-->

		<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />

		<!--给出需要扫描Dao接口包-->

		<property name="basePackage" value="com.csj2018.o2o.dao" />

	</bean>

</beans>

4. 创建/src/main/resources/spring/spring-service.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:tx="http://www.springframework.org/schema/tx"

    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.xsd

    http://www.springframework.org/schema/tx

    http://www.springframework.org/schema/tx/spring-tx.xsd">

    <!-- 扫描service包下所有使用注解的类型 -->

    <context:component-scan base-package="com.csj2018.o2o.service" />  

    <!-- 配置事务管理器 -->

    <bean id="transactionManager"

        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

        <!-- 注入数据库连接池 -->

        <property name="dataSource" ref="dataSource" />

    </bean>  

    <!-- 配置基于注解的声明式事务 -->

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

</beans>

6. 创建/src/main/resources/spring/spring-web.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.xsd

    http://www.springframework.org/schema/mvc

    http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">

    <!-- 配置SpringMVC -->

    <!-- 1.开启SpringMVC注解模式 自动识别controller类，不需要xml中做bean的配置-->

    <mvc:annotation-driven />

    <!-- 2.静态资源默认servlet配置

    	(1)加入对静态资源的处理：js,gif,png

    	(2)允许使用"/"做整体映射 -->

    <mvc:resources mapping="/resources/**" location="/resources/" />

    <mvc:default-servlet-handler />

    <!-- 3.定义视图解析器 -->

    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver" >

    	<property name="prefix" value="/WEB_INF/html/"></property>

    	<property name="suffix" value=".html"></property>

    </bean>

    <!-- 4.扫描web相关的bean -->

    <context:component-scan base-package="com.csj2018.o2o.web" />

</beans>

7. 修改/src/main/webapp/WEB-INF/web.xml

<?xml version="1.0" encoding="UTF-8" ?>

<web-app version="3.1"

	xmlns="http://xmlns.jcp.org/xml/ns/javaee"

	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee    http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"

	metadata-complete="true">

	<display-name>Archetype Created Web Application</display-name>

	<welcome-file-list>

		<welcome-file>index.jsp</welcome-file>

		<welcome-file>index.html</welcome-file>

	</welcome-file-list>

	<servlet>

		<servlet-name>spring-dispatcher</servlet-name>

		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

		<init-param>

			<param-name>contextConfigLocation</param-name>

			<param-value>classpath:spring-*.xml</param-value>

		</init-param>

	</servlet>

	<servlet-mapping>

		<servlet-name>spring-dispatcher</servlet-name>

		<!-- 默认匹配所有的请求 -->

		<url-pattern>/</url-pattern>

	</servlet-mapping>

</web-app>

8. 总结

*    1.首先在pom.xml中指定工程所依赖的jar包

*    2.在jdbc.properties中指定了数据库的连接方式

*    3.创建mybatis-config文件对mybatis做配置

*    4.创建spring-dao文件，将jdbc.properties和mybatiso-config都加载了进来，创建dataSource连接池，同时配置了mybatis与数据库进行交互的方式

*    5.创建spring-service配置文件，用于事务管理将spring-dao配置到的dataSource注入到事务管理器里面，便于service层做操纵

*    6.创建spring-web文件，定义dispatcher如何响应我们的url请求，即定义了controller的一些行为

*    7.在web.xml中dispatcher作为servlet注册进来响应前端请求，同时将spring打头的文件都注册进来

巴特西

校园商铺-2项目设计和框架搭建-6逐层完成SSM的各项配置

1. 创建/src/main/resources/jdbc.properties文件

2. 创建/src/main/resources/mybatis-config.xml

3. 创建/src/main/resources/spring/spring-dao.xml

4. 创建/src/main/resources/spring/spring-service.xml

6. 创建/src/main/resources/spring/spring-web.xml

7. 修改/src/main/webapp/WEB-INF/web.xml

8. 总结

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