到目前为止web.xml中出现的标签:servlet
filter
listener
context-param
。
加载顺序,从前到后:
context-param 定义一对键值对数据,通常为listener使用 listener ContextLoaderListener:在web应用启动时执行,创建Spring工厂 filter Struts2Filter:过滤所有请求 servlet
Servlet的url-pattern有4种配置格式:
精确匹配 /book/showAllBooks 路径匹配 /* /book/* 后缀名匹配 *.action *.do *.jsp 缺省匹配 / 在上面3种都无法匹配的情况下,做默认匹配
优先级从高到低:
1 精确匹配 2 路径匹配 3后缀名匹配 4缺省匹配
注意点:
image-20200603111758115
准备工作,添加 mybatis-spring
<!-- 整合spring mybatis的依赖-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.4</version>
</dependency>
初版配置:
<!-- 读取jdbc.properties-->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- 0 定义一个连接池 -->
<bean id="druidDataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!-- 定义SqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="druidDataSource"/>
<!--
配置实体类的包名,自动为实体配置短类名的别名
-->
<property name="typeAliasesPackage" value="com.bcl.entity"/>
<property name="mapperLocations">
<!-- 配置mapper.xml的路径-->
<list>
<!--<value>classpath:com/bcl/mapper/UserMapper.xml</value>
<value>classpath:com/bcl/mapper/StudentMapper.xml</value>
<value>classpath:com/bcl/mapper/BookMapper.xml</value>-->
<value>classpath:com/bcl/mapper/*Mapper.xml</value>
</list>
</property>
</bean>
<!-- 定义SqlSession -->
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg ref="sqlSessionFactory"/>
</bean>
<!-- 创建 UserMapper实现类对象-->
<bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
<property name="sqlSessionTemplate" ref="sqlSession"/>
<property name="mapperInterface" value="com.bcl.mapper.UserMapper"/>
</bean>
<!--<bean id="bookMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
<property name="sqlSessionTemplate" ref="sqlSession"/>
<property name="mapperInterface" value="com.bcl.mapper.BookMapper"/>
</bean>-->
<bean id="userService" class="com.bcl.service.impl.UserServiceImpl">
<property name="userMapper" ref="userMapper"/>
</bean>
最终配置:
<!-- 读取jdbc.properties-->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- 0 定义一个连接池 -->
<bean id="druidDataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!-- 定义SqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="druidDataSource"/>
<!--
配置实体类的包名,自动为实体配置短类名的别名
-->
<property name="typeAliasesPackage" value="com.bcl.entity"/>
<property name="mapperLocations">
<!-- 配置mapper.xml的路径-->
<list> <value>classpath:com/bcl/mapper/*Mapper.xml</value>
</list>
</property>
</bean>
<!--
自动创建Mapper实现类对象
自动扫描basePackage包下的Mapper接口,自动创建Mapper接口的实现类对象
-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--
mapper实现类对象的id规则:接口名首字母小写
UserMapper ==> userMapper
BookMapper ==> bookMapper
-->
<property name="basePackage" value="com.bcl.mapper"/>
</bean>
<bean id="userService" class="com.bcl.service.impl.UserServiceImpl">
<property name="userMapper" ref="userMapper"/>
</bean>
导入依赖
jdbc驱动依赖
mybatis依赖
struts2依赖
spring依赖
spring整合mybaits依赖
spring整合struts2依赖
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.26.RELEASE</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.48</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.4</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.30</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.26.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>4.3.26.RELEASE</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.5</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.26.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.3</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-core</artifactId>
<version>2.3.16.3</version>
</dependency>
<!-- 整合spring mybatis的依赖-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.4</version>
</dependency>
<!-- druid的依赖-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.14</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.26.RELEASE</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-spring-plugin</artifactId>
<version>2.3.16.3</version>
</dependency>
配置文件初始化
web.xml
<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>
<filter>
<filter-name>Struts2Filter</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>Struts2Filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
applicationContext.xml
<!-- 读取jdbc.properties-->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- 0 定义一个连接池 -->
<bean id="druidDataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!-- 定义SqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="druidDataSource"/>
<!--
配置实体类的包名,自动为实体配置短类名的别名
-->
<property name="typeAliasesPackage" value="com.bcl.entity"/>
<property name="mapperLocations">
<!-- 配置mapper.xml的路径-->
<list>
<value>classpath:com/bcl/mapper/*Mapper.xml</value>
</list>
</property>
</bean>
<!--
自动创建Mapper实现类对象
自动扫描basePackage包下的Mapper接口,自动创建Mapper接口的实现类对象
-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--
mapper实现类对象的id规则:接口名首字母小写
UserMapper ==> userMapper
BookMapper ==> bookMapper
-->
<property name="basePackage" value="com.bcl.mapper"/>
</bean>
class
XxxServiceImpl
implements
XxxService{
private XxxMapper xxxMapper;
public
void
setXxxMapper(XxxMapper mapper){
this.xxxMapper = mapper;
}
业务方法...
}
XxxAction{
private XxxService xxxService;
public
void
setXxxService(XxxService service){
this.xxxService = service;
}
服务方法...
}
Spring提供2种控制方式:
Spring AOP声明式事务控制的步骤:
<!-- 定义目标类对象-->
<bean
id="userService"
class="com.bcl.service.impl.UserServiceImpl">
<property
name="userMapper"
ref="userMapper"/>
</bean>
<!-- 配置增强类:事务管理器-->
<bean
id="txManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property
name="dataSource"
ref="druidDataSource"/>
</bean>
<tx:advice
transaction-manager="txManager"
id="txAdvice">
<tx:attributes>
<!-- login 开启只读事务-->
<tx:method
name="login"
read-only="true"/>
<!-- 其它的方法,都必须开启事务 -->
<tx:method
name="*"
propagation="REQUIRED"/>
</tx:attributes>
</tx:advice>
<!--
定义切入点
编织组装
-->
<aop:config>
<aop:pointcut
id="servicePointCut"
expression="execution(* com.bcl.service.*.*(..))"/>
<aop:advisor
advice-ref="txAdvice"
pointcut-ref="servicePointCut"/>
</aop:config>