Spring mvc回顾,整合mybatis (06-02)
2021-06-07 本文已影响0人
指下光年
- 配置文件
Springmvc配置文件
<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/c"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
<!--扫描控制层组件-->
<context:component-scan base-package="com.atguigu.ssm.controller"></context:component-scan>
<!--配置视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/view/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!--配置默认的servlet处理静态资源-->
<mvc:default-servlet-handler />
<!--开启mvc的注解驱动-->
<mvc:annotation-driven />
</beans>
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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--开启注解模式-->
<context:annotation-config />
<!-- 数据库连接池 -->
<!-- 加载配置文件 -->
<context:property-placeholder location="classpath:properties/jdbc.properties"/>
<!-- 数据库连接池 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
destroy-method="close">
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="maxActive" value="10"/>
<property name="minIdle" value="5"/>
</bean>
<!-- 让spring管理sqlsessionfactory 使用mybatis和spring整合包中的 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 数据库连接池 -->
<property name="dataSource" ref="dataSource"/>
<!-- 加载mybatis的全局配置文件 -->
<property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml"/>
</bean>
<!--配置mapper扫描包-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.lnp.mapper"/>
</bean>
<!--==========================以上内容为applicationContext-dao配置===================================-->
<!--自动扫描service-->
<context:component-scan base-package="com.lnp.service" />
<!-- 事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 数据源 -->
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- 传播行为 -->
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="create*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="find*" propagation="SUPPORTS" read-only="true" />
<tx:method name="select*" propagation="SUPPORTS" read-only="true" />
<tx:method name="get*" propagation="SUPPORTS" read-only="true" />
</tx:attributes>
</tx:advice>
<!-- 切面 -->
<aop:config>
<aop:advisor advice-ref="txAdvice"
pointcut="execution(* com.lnp.service.*.*(..))" />
</aop:config>
web.xml
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<display-name>Archetype Created Web Application</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- log4j配置文件地址 -->
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>classpath:properties/log4j.properties</param-value>
</context-param>
<!-- Log4j的监听器要放在spring监听器前面 -->
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>
<!-- 加载spring容器 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--前端控制器-->
<servlet>
<servlet-name>taotao-manager</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- contextConfigLocation配置springmvc记载的配置文件(配置处理器映射器、适配器等等)
如果不配置contextConfigLocation,默认加载的是/WEB-INF/servlet名称-servlet.xml
-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/springMvc.xml</param-value>
</init-param>
<!-- 配置服务器启动后立即加载Spring MVC配置文件 -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>taotao-manager</servlet-name>
<!--
第一种:*.action,访问以action结尾由DispatcherServlet进行解析
第二种:/,所有的访问的地址都由DispatcherServlet进行解析,对于静态的文件我们希望不用DispatcherServlet解析,
需要在springMvc.xml中添加静态资源映射!!。
使用此种方法可以实现RESTful风格的url
第三种:/*,这种配置不对,使用这种配置,最终要转发到一个jsp页面时,仍然会由DispatcherServlet解析jsp,不能根据jsp页面找到handler,会报错
-->
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- post乱码过滤器 -->
<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>
</web-app>
web.xml
- 启动spring容器
<!--自定义spring配置文件的位置和名称-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring.xml</param-value>
</context-param>
<!--配置spring的监听器-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
- Springmvc前端控制器
<!--配置springMVC的核心控制器-->
<servlet>
<servlet-name>springMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--自定义springMVC配置文件的位置和名称-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springMVC.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
- 字符编码过滤器
<!--配置编码过滤器-->
<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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
- 使用rest风格uri
<!--配置处理请求方式的过滤器-->
<filter>
<filter-name>HiddenHttpMethodFilter</filter-name>
<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>HiddenHttpMethodFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
spring.xml
- 扫描除控制层以外的组件
<!--扫描除控制层以外的组件-->
<context:component-scan base-package="com.atguigu.ssm">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
- 引入properties
<!--引入jdbc.properties文件-->
<context:property-placeholder location="classpath:jdbc.properties" />
- 配置数据源
<!--配置数据源组件-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driver}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="username" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
- 配置整合mybatis
<!--配置SqlSessionFactoryBean,提供mybatis操作数据库的对象SqlSession-->
<bean class="org.mybatis.spring.SqlSessionFactoryBean">
<!--配置mybatis核心配置文件的路径-->
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
<!--配置数据源-->
<property name="dataSource" ref="dataSource"></property>
<!--设置类型别名,将指定的包下所有的类型设置类型别名,即类名且不区分大小写-->
<property name="typeAliasesPackage" value="com.atguigu.ssm.bean"></property>
<!--设置映射文件的路径,要求和mapper接口必须在同一个包下-->
<property name="mapperLocations" value="classpath:com/atguigu/ssm/mapper/*.xml"></property>
</bean>
- 配置扫描器,将mybatis的接口实现类加载ioc容器中
<!--配置mapper接口的扫描,会将所设置的包下所有的接口,通过sqlSession.getMapper()方法返回代理实现类对象-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.atguigu.ssm.mapper"></property>
</bean>
- 事务控制
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
6.开启基于注解的事务,使用xml配置形式的事务
<aop:config>
<!--切入点表达式-->
<aop:pointcut id="pointcut" expression="execution()"/>
<!--配置事务增强-->
<aop:advisor advice-ref="txAdvice" pointcut="pointcut"/>
</aop:config>
<!--配置事务增强,事务如何切入-->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!--所有方法都是事务方法-->
<tx:method name="*"/>
<!--以get开始的所有方法-->
<tx:method name="get*" read-only="true"/>
</tx:attributes>
</tx:advice>
Mybatis.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>
<!--引用properties文件-->
<properties resource="jdbc.properties"></properties>
<!--
environments:设置多个连接数据库的环境
属性:
default:设置默认使用的数据库环境
-->
<environments default="development">
<!--
environment:设置某个具体的数据库环境
属性:
id:设置当前数据库环境的唯一标识,不能重复
-->
<environment id="development">
<!--
transactionManager:事务管理器,设置事务的管理方式
属性:
type:设置事务管理方式,JDBC/MANAGED
JDBC:所有sql语句的执行都需要手动提交或回滚事务
MANAGED:被管理,例如spring的AOP
-->
<transactionManager type="JDBC"/>
<!--
dataSource:设置数据源,即连接数据库的信息
属性:
type:设置数据源的类型,POOLED/UNPOOLED/JNDI
POOLED:使用数据库连接池,即每次创建的连接都会被缓存,再次使用时直接从缓存中获取
UNPOOLED:不使用数据库连接池,每次都需要重新创建连接
JUDI:调用上下文的数据源
-->
<dataSource type="POOLED">
<!--<property name="driver" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/ssm"/>
<property name="username" value="root"/>
<property name="password" value="123456"/>-->
<property name="driver" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</dataSource>
</environment>
</environments>
<!--引用映射文件-->
<mappers>
<!--
mapper:引用具体的映射文件
属性:
resource:要引用的映射文件的路径
-->
<mapper resource="UserMapper.xml"/>
<mapper resource="ParamMapper.xml"/>
</mappers>
</configuration>