ssm配置一一道来

resource下配置文件
Mybatis------Spring------SpringMVC
1：创建mybatis包

1.1创建mybatis-config.xml全局配置

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<?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">

只需要配置驼峰命名

<configuration>

　　　　<setting>

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

　　　　<settting>

<configuration>　　

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1.2创建mappers包（可以有各对应mapper下的类，此处只创建一个）

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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">
//对应包扫描路径
<mapper namespace="cn.xlh.travel.mapper.UserMapper">
　　　　-----各类sql语句-----
　　<select id="queryUserByUserName" resultType="User">
  select * from tab_user where username=#{username}
  </select>
</mapper>
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2：创建spring包
2.1：创建applicationContext.xml全局配置文件
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<?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"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd">
//开启注解扫描
<context:component-scan base-package=
"cn.xlh.travael.service">
</context:component-scan>
 
//加载外部资源配置文件
<bean id="dataSource" class="

com.alibaba.druid.pool.DruidDataSource

">
　　<property name="driverClassName"
    value="com.mysql.jdbc.Driver"></property>
　　<property name="url" value="jdbc:mysql:
   //127.0.0.1:3306/travel11"></property>
   <property name="username" value="root"></property>
   <property name="password" value=""></property>
</bean>
</beans>
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2.2:创建spring连接mybatis的配置文件applicationContext-mybatis.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"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd">
//装配SqlSessionFactory（会话工厂）
<bean id="sqlSessionFactory"

class="org.mybatis.spring.SqlSessionFactoryBean"

>
<property name="configLocation" value="classpath:
mybatis/mybatis-config.xml"></property>
<property name="dataSourcee" ref="dataSource"></property>
<property name="typeAliasesPackage" value="
cn.xlh.travel.pojo"></property>
<property name="mapperLocations" value="
classpath:mybatis/mappers/**/*.xml"></property>
</bean>

//装配mappper
<bean class="

org.mybatis.spring.mapper.MapperScannerConfigurer

">
</property name="basePackage" value="
cn.xlh.travel.mspper"></property>

</beans>
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2.3:装配全局的事务配置文件applicationContext-tx.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"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd">

//xml配置事务的步骤
//1.装配事务管理器
//2.配置事务策略
//3.配置AOP
<bean id="transactionManager" class="

org.springframework.jdbc.datasource.DataSourceTransactionManager

"></bean>

<tx:advice id="txAdvice">
　　<tx:attributes>
      <tx:method name="*/">
     </tx:attributes>
</tx:advice>

<aop:config>
 <aop:pointcut id="pt1"

expression="execution(* cn.itcast.travel.service.impl.*.*(..))"

></aop:poincut>
 <aop:advisor advice-ref="txAdvice" pointcut-ref="pt1">
</aop:advisor>

</aop:config>
</beans>
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2.4:配置springMVC-servlet.xml（*重要*）
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<?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:p="http://www.springframework.org/schema/p"
       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/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context.xsd">
//开启注解扫描
<context:component-scan base-package="
cn.xlh.travel.web"></context:component-scan>

//配置注解驱动

<mvc:annotation-driven>
    <mvc:message-converters>
        <bean class="org.springframework.http.converter.StringHttpMessageConverter">
            <property name="defaultCharset" value="utf-8"></property>
        </bean>
    </mvc:message-converters>
</mvc:annotation-driven>

//放行静态资源
<mvc:default-servlet-handler>
</mvc:default-servlet-handler>

</beans>
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3:main-webapp-WEB-INF-web.xml
---------------------------------------------------
//---1Spring的监听器
<listener>
　　<listener-class>

org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>
<context-parm>
 <parm-name>contextConfigLocation</param-name>
 <param-value>classpath:spring/applicationContext*.xml</param-value>
</context-param>

//---2配置前端控制器

<servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring/springmvc-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>


//拦截

<servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <!--拦截所有请求，jsp除外-->
    <url-pattern>/</url-pattern>
</servlet-mapping>

</web-app>

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