相信不少初学习SSM框架的同学被框架各个配置文件弄晕，这些配置文件有不少配置是整合Spring，SpringMVC，Mybatis的必须基本配置，这里作下总结。
先讲需要导入的jar包
asm-3.2.0.RELEASE.jar
asm-3.3.1.jar
c3p0-0.9.jar
cglib-2.2.2.jar
com.springsource.net.sf.cglib-2.2.0.jar
com.springsource.org.aopalliance-1.0.0.jar
com.springsource.org.apache.commons.logging-1.1.1.jar
com.springsource.org.aspectj.weaver-1.6.8.RELEASE.jar
jackson-core-asl-1.7.2.jar
jackson-mapper-asl-1.7.2.jar
javassist-3.17.1-GA.jar
javax.servlet.jsp.jstl.jar
jsf-api.jar
jsf-impl.jar
jstl-impl.jar
junit.jar
log4j-1.2.17.jar
mybatis-3.2.2.jar
mybatis-spring-1.2.0.jar
mysql-connector-java-5.1.26-bin.jar
org.hamcrest.core_1.1.0.v20090501071000.jar
org.springframework.transaction-3.2.2.RELEASE.jar
slf4j-api-1.7.5.jar
slf4j-log4j12-1.7.5.jar
spring-aop-3.2.0.RELEASE.jar
spring-beans-3.2.0.RELEASE.jar
spring-context-3.2.0.RELEASE.jar
spring-core-3.2.0.RELEASE.jar
spring-expression-3.2.0.RELEASE.jar
spring-jdbc-3.2.0.RELEASE.jar
spring-orm-3.2.0.RELEASE.jar
spring-test-3.2.0.RELEASE.jar
spring-web-3.2.0.RELEASE.jar
spring-webmvc-3.2.0.RELEASE.jar
首先是web.xml，这是项目的全局配置文件
这里负责：加载applicationContext.xml，springDispatcherServlet-servlet.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> <display-name>ssm-curd</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <!-- 1，启动Spring容器 --> <!-- needed for ContextLoaderListener --> <context-param> <param-name>contextConfigLocation</param-name> <!-- 这里就会加载classpath:applicationContext.xml --> <param-value>classpath:applicationContext.xml</param-value> </context-param> <!-- Bootstraps the root web application context before servlet initialization --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 2，SpringMVC的前端控制器，拦截所有的请求 --> <!-- The front controller of this Spring Web application, responsible for handling all application requests --> <servlet> <servlet-name>springDispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:WEB-INF/springDispatcherServlet-servlet.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <!-- Map all requests to the DispatcherServlet for handling --> <servlet-mapping> <servlet-name>springDispatcherServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- 3，配置了前端控制器就顺便把字符编码拦截器顺便配上 --> <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>forceRequestEncoding</param-name> <param-value>true</param-value> </init-param> <init-param> <param-name>forceRequestEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 4，使用Rest风格的URI:将页面普通的post请求转化为指定的delete/put请求 --> <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> </web-app>
然后是applicationContext.xml，这是Spring的配置文件
负责：数据库源，指定mybatis-config.xml（mybatis全局配置文件），指定mapper/*.xml（映射文件），事务控制
<?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:aop="http://www.springframework.org/schema/aop" 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-4.3.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd "> <context:component-scan base-package="com.atguigu"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!-- Spring的配置文件，这里主要配置和业务逻辑有关的 --> <!-- 数据源，事务控制。。。 --> <context:property-placeholder location="classpath:dbconfig.properties"/> <bean id="ComboPooledDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property> <property name="driverClass" value="${jdbc.driverClass}"></property> <property name="user" value="${jdbc.user}"></property> <property name="password" value="${jdbc.password}"></property> </bean> <!-- =============================================== --> <!-- 配置和Mybatis的整合 --> <bean id="SqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 指定配置mybatis全局配置文件的位置 --> <property name="configLocation" value="classpath:mybatis-config.xml"></property> <!-- 指定Mybatis数据源 --> <property name="dataSource" value="ComboPooledDataSource"></property> <!-- 指定mybatis，mapper文件的位置 --> <property name="mapperLocations" value="classpath:mapper/*.xml"></property> </bean> <!-- 配置扫描器，将mybatis接口实现到ioc容器中 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 扫描所有的Dao接口的实现，加入到ioc容器中 --> <property name="basePackage" value="com.atguigu.curd.dao"></property> </bean> <!-- =============================================== --> <!-- 事务控制配置 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 控制住数据源 --> <property name="dataSource" ref="ComboPooledDataSource"></property> </bean> <!-- 开启基于注解的事务，推荐重要的事务用xml配置 --> <aop:config> <!-- 切入点表达式 --> <aop:pointcut expression="execution(* com.atguigu.curd.service..*(..))" id="txPoint"/> <!-- 配置事务增强 --> <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/> </aop:config> <!-- 配置增强：事务如何切入 --> <tx:advice id="txAdvice"> <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> </beans>
mybatis-config.xml（mybatis全局配置文件）
通过package, 可以直接指定package的名字， mybatis会自动扫描你指定包下面的javabean,并且默认设置一个别名，默认的名字为非限定类名来作为它的别名。
<?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> <settings> <setting name="mapUnderscoreToCamelCase" value="true"/> </settings> <typeAliases> <package name="com.atguigu.curd.bean"/> </typeAliases> </configuration>
springDispatcherServlet-servlet.xml，这是SpringMVC的配置文件：包含网站跳转逻辑的控制配置。
<?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/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd 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-4.3.xsd"> <!-- SpringMVC的配置文件：包含网站跳转逻辑的控制配置 --> <!-- 有关网站逻辑 都写--> <context:component-scan base-package="com.atguigu" use-default-filters="false"> <!-- 只扫描控制器，禁用默认过滤规则 --> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!-- 配置视图解析器，方便页面返回 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/views/"></property> <property name="suffix" value=".jsp"></property> </bean> <!-- 两个必须的标准配置 --> <!-- 将SpringMVC不能处理的请求交给tomcat --> <mvc:default-servlet-handler/> <!-- 能支持SpringMVC的更高级功能：基于JSR303校验，快捷的ajax，映射动态请求等 --> <mvc:annotation-driven/> </beans>
参考资料https://www.cnblogs.com/zzb-yp/p/9295397.html
https://blog.csdn.net/jdbdh/article/details/83582815#2.5%E3%80%81db.properties