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SSM框架中的一些配置信息

一、web.xml

1.配置SpringMVC编码过滤器

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

2.启动springMVC

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<servlet>
    <servlet-name>DispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
	<!-- 参数：读取spring-mvc.xml -->
   	<init-param>
		<param-name>contextConfigLocation</param-name>
       	<param-value>classpath:spring-mvc.xml</param-value>
    </init-param>
</servlet>
<!-- 通过DispatherServlet过滤前端请求，后缀为.action的调用Controller -->
<servlet-mapping>
	<servlet-name>DispatcherServlet</servlet-name>
	<url-pattern>*.action</url-pattern>
</servlet-mapping>

3.过滤资源

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<servlet-mapping> 
	<servlet-name>default</servlet-name> 
	<url-pattern>*.css</url-pattern> 
</servlet-mapping>

4.启动spring

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<listener>
	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
5.修改路径
<!-- classpath为类路径 -->
<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:applicationContext.xml</param-value>
</context-param>
二、spring-mvc.xml

1.扫描Controller所在的包

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<contenxt:component-scan base-package="xyz.xqsr.controller"/>

2.注解驱动

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<mvc:annotation-driven></mvc:annotation-driven>

3.视图解析器:简化在Controller类编写的视图路径 

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<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/jsp/"/>
		<property name="suffix" value=".jsp"/>
</bean>
三、jdbc.properties
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jdbc.url=jdbc:mysql://localhost:3306/ticket?useUnicode=true&characterEncoding=UTF-8
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.user=root
jdbc.password=
四、applicationContext.xml

1.读取jdbc.properties

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

2.创建DataSource

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<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
		<property name="url" value="${jdbc.url}"/>
		<property name="driverClassName" value="${jdbc.driverClass}"/>
		<property name="username" value="${jdbc.user}"/>
		<property name="password" value="${jdbc.password}"/>
		<property name="maxActive" value="10"/>
            //最大链接数
		<property name="maxIdle" value="5"/>
            //最大空闲时间
</bean>

3.创建sqlSessionFactory对象

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<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
	<!-- 关联连接池 -->
	<property name="dataSource" ref="dataSource"/>
	<!-- 加载sql映射文件 -->
	<property name="mapperLocations" value="classpath:config/*.xml"/>
	<!-- 引入插件 -->
	<property name="plugins">
		<array>
			<!-- mybatis分页插件 -->
			<bean class="com.github.pagehelper.PageInterceptor">
				<property name="properties">
					<!-- 
					helperDialect:连接数据库的类型
					 -->
					<value>
						helperDialect=mysql
					</value>
				</property>
			</bean>
		</array>
	</property>
</bean>

4.mapper接口的扫描

注意：如果使用mapper接口包扫描，那么每个mapper接口在spring容器中的id名称为类名

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<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <!-- 配置Mapper接口所在包路径  -->
    <property name="basePackage" value="xyz.xqsr.dao"/>
</bean>

5.开启Spring的IOC注解扫描

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<context:component-scan base-package="xyz.xqsr"/>

6.事务管理器

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<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
	<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 启用Spring事务注解 -->
<tx:annotation-driven transaction-manager="transactionManager"/>
五、mapper中的默认配置
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<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!-- 该文件编写mybatis中的mapper接口里面的方法提供对应的sql语句 -->
<!-- namespeace为关联mapper的dao层 -->
<mapper namespace="xyz.xqsr.dao.UserDao">
</mapper>
技术 ssm

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